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Patrick Welche <prlw1@cam.ac.uk>
[netbsd-mini2440.git] / external / gpl3 / binutils / dist / ld / lexsup.c
bloba3ad0c253975bd30e73d850c72759d868b159261
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
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
44 #ifndef PATH_SEPARATOR
45 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
46 #define PATH_SEPARATOR ';'
47 #else
48 #define PATH_SEPARATOR ':'
49 #endif
50 #endif
51
52 /* Somewhere above, sys/stat.h got included . . . . */
53 #if !defined(S_ISDIR) && defined(S_IFDIR)
54 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
55 #endif
56
57 static void set_default_dirlist (char *);
58 static void set_section_start (char *, char *);
59 static void set_segment_start (const char *, char *);
60 static void help (void);
61
62 /* Non-zero if we are processing a --defsym from the command line. */
63 int parsing_defsym = 0;
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_HELP,
81 OPTION_IGNORE,
82 OPTION_MAP,
83 OPTION_NO_DEMANGLE,
84 OPTION_NO_KEEP_MEMORY,
85 OPTION_NO_WARN_MISMATCH,
86 OPTION_NO_WARN_SEARCH_MISMATCH,
87 OPTION_NOINHIBIT_EXEC,
88 OPTION_NON_SHARED,
89 OPTION_NO_WHOLE_ARCHIVE,
90 OPTION_OFORMAT,
91 OPTION_RELAX,
92 OPTION_RETAIN_SYMBOLS_FILE,
93 OPTION_RPATH,
94 OPTION_RPATH_LINK,
95 OPTION_SHARED,
96 OPTION_SONAME,
97 OPTION_SORT_COMMON,
98 OPTION_SORT_SECTION,
99 OPTION_STATS,
100 OPTION_SYMBOLIC,
101 OPTION_SYMBOLIC_FUNCTIONS,
102 OPTION_TASK_LINK,
103 OPTION_TBSS,
104 OPTION_TDATA,
105 OPTION_TTEXT,
106 OPTION_TRADITIONAL_FORMAT,
107 OPTION_UR,
108 OPTION_VERBOSE,
109 OPTION_VERSION,
110 OPTION_VERSION_SCRIPT,
111 OPTION_VERSION_EXPORTS_SECTION,
112 OPTION_DYNAMIC_LIST,
113 OPTION_DYNAMIC_LIST_CPP_NEW,
114 OPTION_DYNAMIC_LIST_CPP_TYPEINFO,
115 OPTION_DYNAMIC_LIST_DATA,
116 OPTION_WARN_COMMON,
117 OPTION_WARN_CONSTRUCTORS,
118 OPTION_WARN_FATAL,
119 OPTION_NO_WARN_FATAL,
120 OPTION_WARN_MULTIPLE_GP,
121 OPTION_WARN_ONCE,
122 OPTION_WARN_SECTION_ALIGN,
123 OPTION_SPLIT_BY_RELOC,
124 OPTION_SPLIT_BY_FILE ,
125 OPTION_WHOLE_ARCHIVE,
126 OPTION_ADD_NEEDED,
127 OPTION_NO_ADD_NEEDED,
128 OPTION_AS_NEEDED,
129 OPTION_NO_AS_NEEDED,
130 OPTION_WRAP,
131 OPTION_FORCE_EXE_SUFFIX,
132 OPTION_GC_SECTIONS,
133 OPTION_NO_GC_SECTIONS,
134 OPTION_PRINT_GC_SECTIONS,
135 OPTION_NO_PRINT_GC_SECTIONS,
136 OPTION_HASH_SIZE,
137 OPTION_CHECK_SECTIONS,
138 OPTION_NO_CHECK_SECTIONS,
139 OPTION_NO_UNDEFINED,
140 OPTION_INIT,
141 OPTION_FINI,
142 OPTION_SECTION_START,
143 OPTION_UNIQUE,
144 OPTION_TARGET_HELP,
145 OPTION_ALLOW_SHLIB_UNDEFINED,
146 OPTION_NO_ALLOW_SHLIB_UNDEFINED,
147 OPTION_ALLOW_MULTIPLE_DEFINITION,
148 OPTION_NO_UNDEFINED_VERSION,
149 OPTION_DEFAULT_SYMVER,
150 OPTION_DEFAULT_IMPORTED_SYMVER,
151 OPTION_DISCARD_NONE,
152 OPTION_SPARE_DYNAMIC_TAGS,
153 OPTION_NO_DEFINE_COMMON,
154 OPTION_NOSTDLIB,
155 OPTION_NO_OMAGIC,
156 OPTION_STRIP_DISCARDED,
157 OPTION_NO_STRIP_DISCARDED,
158 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
159 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
160 OPTION_PIE,
161 OPTION_UNRESOLVED_SYMBOLS,
162 OPTION_WARN_UNRESOLVED_SYMBOLS,
163 OPTION_ERROR_UNRESOLVED_SYMBOLS,
164 OPTION_WARN_SHARED_TEXTREL,
165 OPTION_REDUCE_MEMORY_OVERHEADS,
166 OPTION_DEFAULT_SCRIPT,
167 OPTION_IGNORE_UNRESOLVED_SYMBOL
168 };
169
170 /* The long options. This structure is used for both the option
171 parsing and the help text. */
172
173 struct ld_option
174 {
175 /* The long option information. */
176 struct option opt;
177 /* The short option with the same meaning ('\0' if none). */
178 char shortopt;
179 /* The name of the argument (NULL if none). */
180 const char *arg;
181 /* The documentation string. If this is NULL, this is a synonym for
182 the previous option. */
183 const char *doc;
184 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 } control;
202 };
203
204 static const struct ld_option ld_options[] =
205 {
206 { {NULL, required_argument, NULL, '\0'},
207 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
208 ONE_DASH },
209 { {"architecture", required_argument, NULL, 'A'},
210 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
211 { {"format", required_argument, NULL, 'b'},
212 'b', N_("TARGET"), N_("Specify target for following input files"),
213 TWO_DASHES },
214 { {"mri-script", required_argument, NULL, 'c'},
215 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
216 { {"dc", no_argument, NULL, 'd'},
217 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
218 { {"dp", no_argument, NULL, 'd'},
219 '\0', NULL, NULL, ONE_DASH },
220 { {"entry", required_argument, NULL, 'e'},
221 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
222 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
223 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
224 { {"EB", no_argument, NULL, OPTION_EB},
225 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
226 { {"EL", no_argument, NULL, OPTION_EL},
227 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
228 { {"auxiliary", required_argument, NULL, 'f'},
229 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
230 TWO_DASHES },
231 { {"filter", required_argument, NULL, 'F'},
232 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
233 TWO_DASHES },
234 { {NULL, no_argument, NULL, '\0'},
235 'g', NULL, N_("Ignored"), ONE_DASH },
236 { {"gpsize", required_argument, NULL, 'G'},
237 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
238 TWO_DASHES },
239 { {"soname", required_argument, NULL, OPTION_SONAME},
240 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
241 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
242 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
243 TWO_DASHES },
244 { {"library", required_argument, NULL, 'l'},
245 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
246 { {"library-path", required_argument, NULL, 'L'},
247 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
248 TWO_DASHES },
249 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
250 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
251 { {NULL, required_argument, NULL, '\0'},
252 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
253 { {"print-map", no_argument, NULL, 'M'},
254 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
255 { {"nmagic", no_argument, NULL, 'n'},
256 'n', NULL, N_("Do not page align data"), TWO_DASHES },
257 { {"omagic", no_argument, NULL, 'N'},
258 'N', NULL, N_("Do not page align data, do not make text readonly"),
259 EXACTLY_TWO_DASHES },
260 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
261 '\0', NULL, N_("Page align data, make text readonly"),
262 EXACTLY_TWO_DASHES },
263 { {"output", required_argument, NULL, 'o'},
264 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
265 { {NULL, required_argument, NULL, '\0'},
266 'O', NULL, N_("Optimize output file"), ONE_DASH },
267 { {"Qy", no_argument, NULL, OPTION_IGNORE},
268 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
269 { {"emit-relocs", no_argument, NULL, 'q'},
270 'q', NULL, "Generate relocations in final output", TWO_DASHES },
271 { {"relocatable", no_argument, NULL, 'r'},
272 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
273 { {NULL, no_argument, NULL, '\0'},
274 'i', NULL, NULL, ONE_DASH },
275 { {"just-symbols", required_argument, NULL, 'R'},
276 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
277 TWO_DASHES },
278 { {"strip-all", no_argument, NULL, 's'},
279 's', NULL, N_("Strip all symbols"), TWO_DASHES },
280 { {"strip-debug", no_argument, NULL, 'S'},
281 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
282 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
283 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
284 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
285 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
286 { {"trace", no_argument, NULL, 't'},
287 't', NULL, N_("Trace file opens"), TWO_DASHES },
288 { {"script", required_argument, NULL, 'T'},
289 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
290 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
291 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
292 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
293 '\0', NULL, NULL, ONE_DASH },
294 { {"undefined", required_argument, NULL, 'u'},
295 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
296 TWO_DASHES },
297 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
298 '\0', N_("[=SECTION]"),
299 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
300 { {"Ur", no_argument, NULL, OPTION_UR},
301 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
302 { {"version", no_argument, NULL, OPTION_VERSION},
303 'v', NULL, N_("Print version information"), TWO_DASHES },
304 { {NULL, no_argument, NULL, '\0'},
305 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
306 { {"discard-all", no_argument, NULL, 'x'},
307 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
308 { {"discard-locals", no_argument, NULL, 'X'},
309 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
310 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
311 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
312 { {"trace-symbol", required_argument, NULL, 'y'},
313 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
314 { {NULL, required_argument, NULL, '\0'},
315 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
316 ONE_DASH },
317 { {"start-group", no_argument, NULL, '('},
318 '(', NULL, N_("Start a group"), TWO_DASHES },
319 { {"end-group", no_argument, NULL, ')'},
320 ')', NULL, N_("End a group"), TWO_DASHES },
321 { {"accept-unknown-input-arch", no_argument, NULL,
322 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
323 '\0', NULL,
324 N_("Accept input files whose architecture cannot be determined"),
325 TWO_DASHES },
326 { {"no-accept-unknown-input-arch", no_argument, NULL,
327 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
328 '\0', NULL, N_("Reject input files whose architecture is unknown"),
329 TWO_DASHES },
330 { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED},
331 '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n"
332 " following dynamic libs"),
333 TWO_DASHES },
334 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED},
335 '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n"
336 " in following dynamic libs"),
337 TWO_DASHES },
338 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED},
339 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
340 TWO_DASHES },
341 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED},
342 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"),
343 TWO_DASHES },
344 { {"assert", required_argument, NULL, OPTION_ASSERT},
345 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
346 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
347 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
348 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
349 '\0', NULL, NULL, ONE_DASH },
350 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
351 '\0', NULL, NULL, ONE_DASH },
352 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
353 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
354 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
355 '\0', NULL, NULL, ONE_DASH },
356 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
357 '\0', NULL, NULL, ONE_DASH },
358 { {"static", no_argument, NULL, OPTION_NON_SHARED},
359 '\0', NULL, NULL, ONE_DASH },
360 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
361 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
362 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
363 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
364 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
365 '\0', NULL, N_("Check section addresses for overlaps (default)"),
366 TWO_DASHES },
367 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
368 '\0', NULL, N_("Do not check section addresses for overlaps"),
369 TWO_DASHES },
370 { {"cref", no_argument, NULL, OPTION_CREF},
371 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
372 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
373 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
374 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
375 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
376 TWO_DASHES },
377 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
378 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
379 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
380 '\0', NULL, N_("Treat warnings as errors"),
381 TWO_DASHES },
382 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
383 '\0', NULL, N_("Do not treat warnings as errors (default)"),
384 TWO_DASHES },
385 { {"fini", required_argument, NULL, OPTION_FINI},
386 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
387 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
388 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
389 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
390 '\0', NULL, N_("Remove unused sections (on some targets)"),
391 TWO_DASHES },
392 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
393 '\0', NULL, N_("Don't remove unused sections (default)"),
394 TWO_DASHES },
395 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
396 '\0', NULL, N_("List removed unused sections on stderr"),
397 TWO_DASHES },
398 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
399 '\0', NULL, N_("Do not list removed unused sections"),
400 TWO_DASHES },
401 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
402 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
403 TWO_DASHES },
404 { {"help", no_argument, NULL, OPTION_HELP},
405 '\0', NULL, N_("Print option help"), TWO_DASHES },
406 { {"init", required_argument, NULL, OPTION_INIT},
407 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
408 { {"Map", required_argument, NULL, OPTION_MAP},
409 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
410 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
411 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
412 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
413 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
414 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
415 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
416 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
417 '\0', NULL, N_("Do not allow unresolved references in object files"),
418 TWO_DASHES },
419 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
420 '\0', NULL, N_("Allow unresolved references in shared libaries"),
421 TWO_DASHES },
422 { {"no-allow-shlib-undefined", no_argument, NULL,
423 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
424 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
425 TWO_DASHES },
426 { {"allow-multiple-definition", no_argument, NULL,
427 OPTION_ALLOW_MULTIPLE_DEFINITION},
428 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
429 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
430 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
431 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
432 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
433 { {"default-imported-symver", no_argument, NULL,
434 OPTION_DEFAULT_IMPORTED_SYMVER},
435 '\0', NULL, N_("Create default symbol version for imported symbols"),
436 TWO_DASHES },
437 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
438 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
439 { {"no-warn-search-mismatch", no_argument, NULL,
440 OPTION_NO_WARN_SEARCH_MISMATCH},
441 '\0', NULL, N_("Don't warn on finding an incompatible library"),
442 TWO_DASHES},
443 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
444 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
445 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
446 '\0', NULL, N_("Create an output file even if errors occur"),
447 TWO_DASHES },
448 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
449 '\0', NULL, NULL, NO_HELP },
450 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
451 '\0', NULL, N_("Only use library directories specified on\n"
452 " the command line"),
453 ONE_DASH },
454 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
455 '\0', N_("TARGET"), N_("Specify target of output file"),
456 EXACTLY_TWO_DASHES },
457 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
458 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
459 { {"reduce-memory-overheads", no_argument, NULL,
460 OPTION_REDUCE_MEMORY_OVERHEADS},
461 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
462 TWO_DASHES },
463 { {"relax", no_argument, NULL, OPTION_RELAX},
464 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
465 { {"retain-symbols-file", required_argument, NULL,
466 OPTION_RETAIN_SYMBOLS_FILE},
467 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
468 { {"rpath", required_argument, NULL, OPTION_RPATH},
469 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
470 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
471 '\0', N_("PATH"), N_("Set link time shared library search path"),
472 ONE_DASH },
473 { {"shared", no_argument, NULL, OPTION_SHARED},
474 '\0', NULL, N_("Create a shared library"), ONE_DASH },
475 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD, NetBSD. */
476 '\0', NULL, NULL, ONE_DASH },
477 { {"pie", no_argument, NULL, OPTION_PIE},
478 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
479 { {"pic-executable", no_argument, NULL, OPTION_PIE},
480 '\0', NULL, NULL, TWO_DASHES },
481 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
482 '\0', N_("[=ascending|descending]"),
483 N_("Sort common symbols by alignment [in specified order]"),
484 TWO_DASHES },
485 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
486 '\0', NULL, NULL, NO_HELP },
487 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
488 '\0', N_("name|alignment"),
489 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
490 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
491 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
492 TWO_DASHES },
493 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
494 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
495 TWO_DASHES },
496 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
497 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
498 TWO_DASHES },
499 { {"stats", no_argument, NULL, OPTION_STATS},
500 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
501 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
502 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
503 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
504 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
505 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
506 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
507 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
508 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
509 TWO_DASHES },
510 { {"Tbss", required_argument, NULL, OPTION_TBSS},
511 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
512 { {"Tdata", required_argument, NULL, OPTION_TDATA},
513 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
514 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
515 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
516 { {"unresolved-symbols=<method>", required_argument, NULL,
517 OPTION_UNRESOLVED_SYMBOLS},
518 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
519 " ignore-all, report-all, ignore-in-object-files,\n"
520 " ignore-in-shared-libs"),
521 TWO_DASHES },
522 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
523 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
524 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
525 '\0', NULL, NULL, NO_HELP },
526 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
527 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
528 { {"version-exports-section", required_argument, NULL,
529 OPTION_VERSION_EXPORTS_SECTION },
530 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
531 " SYMBOL as the version."),
532 TWO_DASHES },
533 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
534 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
535 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
536 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
537 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
538 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
539 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
540 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
541 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
542 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
543 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
544 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
545 TWO_DASHES },
546 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
547 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
548 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
549 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
550 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
551 '\0', NULL, N_("Warn if start of section changes due to alignment"),
552 TWO_DASHES },
553 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
554 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
555 TWO_DASHES },
556 { {"warn-unresolved-symbols", no_argument, NULL,
557 OPTION_WARN_UNRESOLVED_SYMBOLS},
558 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
559 { {"error-unresolved-symbols", no_argument, NULL,
560 OPTION_ERROR_UNRESOLVED_SYMBOLS},
561 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
562 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
563 '\0', NULL, N_("Include all objects from following archives"),
564 TWO_DASHES },
565 { {"Bforcearchive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
566 '\0', NULL, NULL, TWO_DASHES }, /* NetBSD. */
567 { {"wrap", required_argument, NULL, OPTION_WRAP},
568 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
569 { {"ignore-unresolved-symbol", required_argument, NULL,
570 OPTION_IGNORE_UNRESOLVED_SYMBOL},
571 '\0', N_("SYMBOL"),
572 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
573 };
574
575 #define OPTION_COUNT ARRAY_SIZE (ld_options)
576
577 void
578 parse_args (unsigned argc, char **argv)
579 {
580 unsigned i;
581 int is, il, irl;
582 int ingroup = 0;
583 char *default_dirlist = NULL;
584 char *shortopts;
585 struct option *longopts;
586 struct option *really_longopts;
587 int last_optind;
588 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
589
590 shortopts = xmalloc (OPTION_COUNT * 3 + 2);
591 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
592 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
593
594 /* Starting the short option string with '-' is for programs that
595 expect options and other ARGV-elements in any order and that care about
596 the ordering of the two. We describe each non-option ARGV-element
597 as if it were the argument of an option with character code 1. */
598 shortopts[0] = '-';
599 is = 1;
600 il = 0;
601 irl = 0;
602 for (i = 0; i < OPTION_COUNT; i++)
603 {
604 if (ld_options[i].shortopt != '\0')
605 {
606 shortopts[is] = ld_options[i].shortopt;
607 ++is;
608 if (ld_options[i].opt.has_arg == required_argument
609 || ld_options[i].opt.has_arg == optional_argument)
610 {
611 shortopts[is] = ':';
612 ++is;
613 if (ld_options[i].opt.has_arg == optional_argument)
614 {
615 shortopts[is] = ':';
616 ++is;
617 }
618 }
619 }
620 if (ld_options[i].opt.name != NULL)
621 {
622 if (ld_options[i].control == EXACTLY_TWO_DASHES)
623 {
624 really_longopts[irl] = ld_options[i].opt;
625 ++irl;
626 }
627 else
628 {
629 longopts[il] = ld_options[i].opt;
630 ++il;
631 }
632 }
633 }
634 shortopts[is] = '\0';
635 longopts[il].name = NULL;
636 really_longopts[irl].name = NULL;
637
638 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
639
640 /* The -G option is ambiguous on different platforms. Sometimes it
641 specifies the largest data size to put into the small data
642 section. Sometimes it is equivalent to --shared. Unfortunately,
643 the first form takes an argument, while the second does not.
644
645 We need to permit the --shared form because on some platforms,
646 such as Solaris, gcc -shared will pass -G to the linker.
647
648 To permit either usage, we look through the argument list. If we
649 find -G not followed by a number, we change it into --shared.
650 This will work for most normal cases. */
651 for (i = 1; i < argc; i++)
652 if (strcmp (argv[i], "-G") == 0
653 && (i + 1 >= argc
654 || ! ISDIGIT (argv[i + 1][0])))
655 argv[i] = (char *) "--shared";
656
657 /* Because we permit long options to start with a single dash, and
658 we have a --library option, and the -l option is conventionally
659 used with an immediately following argument, we can have bad
660 results if somebody tries to use -l with a library whose name
661 happens to start with "ibrary", as in -li. We avoid problems by
662 simply turning -l into --library. This means that users will
663 have to use two dashes in order to use --library, which is OK
664 since that's how it is documented.
665
666 FIXME: It's possible that this problem can arise for other short
667 options as well, although the user does always have the recourse
668 of adding a space between the option and the argument. */
669 for (i = 1; i < argc; i++)
670 {
671 if (argv[i][0] == '-'
672 && argv[i][1] == 'l'
673 && argv[i][2] != '\0')
674 {
675 char *n;
676
677 n = xmalloc (strlen (argv[i]) + 20);
678 sprintf (n, "--library=%s", argv[i] + 2);
679 argv[i] = n;
680 }
681 }
682
683 last_optind = -1;
684 while (1)
685 {
686 int longind;
687 int optc;
688
689 /* Using last_optind lets us avoid calling ldemul_parse_args
690 multiple times on a single option, which would lead to
691 confusion in the internal static variables maintained by
692 getopt. This could otherwise happen for an argument like
693 -nx, in which the -n is parsed as a single option, and we
694 loop around to pick up the -x. */
695 if (optind != last_optind)
696 if (ldemul_parse_args (argc, argv))
697 continue;
698
699 /* getopt_long_only is like getopt_long, but '-' as well as '--'
700 can indicate a long option. */
701 opterr = 0;
702 last_optind = optind;
703 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
704 if (optc == '?')
705 {
706 optind = last_optind;
707 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
708 }
709
710 if (ldemul_handle_option (optc))
711 continue;
712
713 if (optc == -1)
714 break;
715
716 switch (optc)
717 {
718 case '?':
719 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
720 /* Fall through. */
721
722 default:
723 einfo (_("%P%F: use the --help option for usage information\n"));
724
725 case 1: /* File name. */
726 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
727 break;
728
729 case OPTION_IGNORE:
730 break;
731 case 'a':
732 /* For HP/UX compatibility. Actually -a shared should mean
733 ``use only shared libraries'' but, then, we don't
734 currently support shared libraries on HP/UX anyhow. */
735 if (strcmp (optarg, "archive") == 0)
736 config.dynamic_link = FALSE;
737 else if (strcmp (optarg, "shared") == 0
738 || strcmp (optarg, "default") == 0)
739 config.dynamic_link = TRUE;
740 else
741 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
742 break;
743 case OPTION_ASSERT:
744 /* FIXME: We just ignore these, but we should handle them. */
745 if (strcmp (optarg, "definitions") == 0)
746 ;
747 else if (strcmp (optarg, "nodefinitions") == 0)
748 ;
749 else if (strcmp (optarg, "nosymbolic") == 0)
750 ;
751 else if (strcmp (optarg, "pure-text") == 0)
752 ;
753 else
754 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
755 break;
756 case 'A':
757 ldfile_add_arch (optarg);
758 break;
759 case 'b':
760 lang_add_target (optarg);
761 break;
762 case 'c':
763 ldfile_open_command_file (optarg);
764 parser_input = input_mri_script;
765 yyparse ();
766 break;
767 case OPTION_CALL_SHARED:
768 config.dynamic_link = TRUE;
769 break;
770 case OPTION_NON_SHARED:
771 config.dynamic_link = FALSE;
772 break;
773 case OPTION_CREF:
774 command_line.cref = TRUE;
775 link_info.notice_all = TRUE;
776 break;
777 case 'd':
778 command_line.force_common_definition = TRUE;
779 break;
780 case OPTION_DEFSYM:
781 lex_string = optarg;
782 lex_redirect (optarg);
783 parser_input = input_defsym;
784 parsing_defsym = 1;
785 yyparse ();
786 parsing_defsym = 0;
787 lex_string = NULL;
788 break;
789 case OPTION_DEMANGLE:
790 demangling = TRUE;
791 if (optarg != NULL)
792 {
793 enum demangling_styles style;
794
795 style = cplus_demangle_name_to_style (optarg);
796 if (style == unknown_demangling)
797 einfo (_("%F%P: unknown demangling style `%s'"),
798 optarg);
799
800 cplus_demangle_set_style (style);
801 }
802 break;
803 case 'I': /* Used on Solaris. */
804 case OPTION_DYNAMIC_LINKER:
805 command_line.interpreter = optarg;
806 break;
807 case OPTION_SYSROOT:
808 /* Already handled in ldmain.c. */
809 break;
810 case OPTION_EB:
811 command_line.endian = ENDIAN_BIG;
812 break;
813 case OPTION_EL:
814 command_line.endian = ENDIAN_LITTLE;
815 break;
816 case OPTION_EMBEDDED_RELOCS:
817 command_line.embedded_relocs = TRUE;
818 break;
819 case OPTION_EXPORT_DYNAMIC:
820 case 'E': /* HP/UX compatibility. */
821 link_info.export_dynamic = TRUE;
822 break;
823 case 'e':
824 lang_add_entry (optarg, TRUE);
825 break;
826 case 'f':
827 if (command_line.auxiliary_filters == NULL)
828 {
829 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *));
830 command_line.auxiliary_filters[0] = optarg;
831 command_line.auxiliary_filters[1] = NULL;
832 }
833 else
834 {
835 int c;
836 char **p;
837
838 c = 0;
839 for (p = command_line.auxiliary_filters; *p != NULL; p++)
840 ++c;
841 command_line.auxiliary_filters
842 = xrealloc (command_line.auxiliary_filters,
843 (c + 2) * sizeof (char *));
844 command_line.auxiliary_filters[c] = optarg;
845 command_line.auxiliary_filters[c + 1] = NULL;
846 }
847 break;
848 case 'F':
849 command_line.filter_shlib = optarg;
850 break;
851 case OPTION_FORCE_EXE_SUFFIX:
852 command_line.force_exe_suffix = TRUE;
853 break;
854 case 'G':
855 {
856 char *end;
857 g_switch_value = strtoul (optarg, &end, 0);
858 if (*end)
859 einfo (_("%P%F: invalid number `%s'\n"), optarg);
860 }
861 break;
862 case 'g':
863 /* Ignore. */
864 break;
865 case OPTION_GC_SECTIONS:
866 link_info.gc_sections = TRUE;
867 break;
868 case OPTION_PRINT_GC_SECTIONS:
869 link_info.print_gc_sections = TRUE;
870 break;
871 case OPTION_HELP:
872 help ();
873 xexit (0);
874 break;
875 case 'L':
876 ldfile_add_library_path (optarg, TRUE);
877 break;
878 case 'l':
879 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
880 break;
881 case 'M':
882 config.map_filename = "-";
883 break;
884 case 'm':
885 /* Ignore. Was handled in a pre-parse. */
886 break;
887 case OPTION_MAP:
888 config.map_filename = optarg;
889 break;
890 case 'N':
891 config.text_read_only = FALSE;
892 config.magic_demand_paged = FALSE;
893 config.dynamic_link = FALSE;
894 break;
895 case OPTION_NO_OMAGIC:
896 config.text_read_only = TRUE;
897 config.magic_demand_paged = TRUE;
898 /* NB/ Does not set dynamic_link to TRUE.
899 Use --call-shared or -Bdynamic for this. */
900 break;
901 case 'n':
902 config.magic_demand_paged = FALSE;
903 config.dynamic_link = FALSE;
904 break;
905 case OPTION_NO_DEFINE_COMMON:
906 command_line.inhibit_common_definition = TRUE;
907 break;
908 case OPTION_NO_DEMANGLE:
909 demangling = FALSE;
910 break;
911 case OPTION_NO_GC_SECTIONS:
912 link_info.gc_sections = FALSE;
913 break;
914 case OPTION_NO_PRINT_GC_SECTIONS:
915 link_info.print_gc_sections = FALSE;
916 break;
917 case OPTION_NO_KEEP_MEMORY:
918 link_info.keep_memory = FALSE;
919 break;
920 case OPTION_NO_UNDEFINED:
921 link_info.unresolved_syms_in_objects
922 = how_to_report_unresolved_symbols;
923 break;
924 case OPTION_ALLOW_SHLIB_UNDEFINED:
925 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
926 break;
927 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
928 link_info.unresolved_syms_in_shared_libs
929 = how_to_report_unresolved_symbols;
930 break;
931 case OPTION_UNRESOLVED_SYMBOLS:
932 if (strcmp (optarg, "ignore-all") == 0)
933 {
934 link_info.unresolved_syms_in_objects = RM_IGNORE;
935 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
936 }
937 else if (strcmp (optarg, "report-all") == 0)
938 {
939 link_info.unresolved_syms_in_objects
940 = how_to_report_unresolved_symbols;
941 link_info.unresolved_syms_in_shared_libs
942 = how_to_report_unresolved_symbols;
943 }
944 else if (strcmp (optarg, "ignore-in-object-files") == 0)
945 {
946 link_info.unresolved_syms_in_objects = RM_IGNORE;
947 link_info.unresolved_syms_in_shared_libs
948 = how_to_report_unresolved_symbols;
949 }
950 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
951 {
952 link_info.unresolved_syms_in_objects
953 = how_to_report_unresolved_symbols;
954 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
955 }
956 else
957 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
958 break;
959 case OPTION_WARN_UNRESOLVED_SYMBOLS:
960 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
961 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
962 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
963 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
964 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
965 break;
966
967 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
968 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
969 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
970 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
971 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
972 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
973 break;
974 case OPTION_ALLOW_MULTIPLE_DEFINITION:
975 link_info.allow_multiple_definition = TRUE;
976 break;
977 case OPTION_NO_UNDEFINED_VERSION:
978 link_info.allow_undefined_version = FALSE;
979 break;
980 case OPTION_DEFAULT_SYMVER:
981 link_info.create_default_symver = TRUE;
982 break;
983 case OPTION_DEFAULT_IMPORTED_SYMVER:
984 link_info.default_imported_symver = TRUE;
985 break;
986 case OPTION_NO_WARN_MISMATCH:
987 command_line.warn_mismatch = FALSE;
988 break;
989 case OPTION_NO_WARN_SEARCH_MISMATCH:
990 command_line.warn_search_mismatch = FALSE;
991 break;
992 case OPTION_NOINHIBIT_EXEC:
993 force_make_executable = TRUE;
994 break;
995 case OPTION_NOSTDLIB:
996 config.only_cmd_line_lib_dirs = TRUE;
997 break;
998 case OPTION_NO_WHOLE_ARCHIVE:
999 whole_archive = FALSE;
1000 break;
1001 case 'O':
1002 /* FIXME "-O<non-digits> <value>" used to set the address of
1003 section <non-digits>. Was this for compatibility with
1004 something, or can we create a new option to do that
1005 (with a syntax similar to -defsym)?
1006 getopt can't handle two args to an option without kludges. */
1007
1008 /* Enable optimizations of output files. */
1009 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1010 break;
1011 case 'o':
1012 lang_add_output (optarg, 0);
1013 break;
1014 case OPTION_OFORMAT:
1015 lang_add_output_format (optarg, NULL, NULL, 0);
1016 break;
1017 case 'q':
1018 link_info.emitrelocations = TRUE;
1019 break;
1020 case 'i':
1021 case 'r':
1022 if (optind == last_optind)
1023 /* This can happen if the user put "-rpath,a" on the command
1024 line. (Or something similar. The comma is important).
1025 Getopt becomes confused and thinks that this is a -r option
1026 but it cannot parse the text after the -r so it refuses to
1027 increment the optind counter. Detect this case and issue
1028 an error message here. We cannot just make this a warning,
1029 increment optind, and continue because getopt is too confused
1030 and will seg-fault the next time around. */
1031 einfo(_("%P%F: bad -rpath option\n"));
1032
1033 link_info.relocatable = TRUE;
1034 config.build_constructors = FALSE;
1035 config.magic_demand_paged = FALSE;
1036 config.text_read_only = FALSE;
1037 config.dynamic_link = FALSE;
1038 break;
1039 case 'R':
1040 /* The GNU linker traditionally uses -R to mean to include
1041 only the symbols from a file. The Solaris linker uses -R
1042 to set the path used by the runtime linker to find
1043 libraries. This is the GNU linker -rpath argument. We
1044 try to support both simultaneously by checking the file
1045 named. If it is a directory, rather than a regular file,
1046 we assume -rpath was meant. */
1047 {
1048 struct stat s;
1049
1050 if (stat (optarg, &s) >= 0
1051 && ! S_ISDIR (s.st_mode))
1052 {
1053 lang_add_input_file (optarg,
1054 lang_input_file_is_symbols_only_enum,
1055 NULL);
1056 break;
1057 }
1058 }
1059 /* Fall through. */
1060 case OPTION_RPATH:
1061 if (command_line.rpath == NULL)
1062 command_line.rpath = xstrdup (optarg);
1063 else
1064 {
1065 size_t rpath_len = strlen (command_line.rpath);
1066 size_t optarg_len = strlen (optarg);
1067 char *buf;
1068 char *cp = command_line.rpath;
1069
1070 /* First see whether OPTARG is already in the path. */
1071 do
1072 {
1073 if (strncmp (optarg, cp, optarg_len) == 0
1074 && (cp[optarg_len] == 0
1075 || cp[optarg_len] == config.rpath_separator))
1076 /* We found it. */
1077 break;
1078
1079 /* Not yet found. */
1080 cp = strchr (cp, config.rpath_separator);
1081 if (cp != NULL)
1082 ++cp;
1083 }
1084 while (cp != NULL);
1085
1086 if (cp == NULL)
1087 {
1088 buf = xmalloc (rpath_len + optarg_len + 2);
1089 sprintf (buf, "%s%c%s", command_line.rpath,
1090 config.rpath_separator, optarg);
1091 free (command_line.rpath);
1092 command_line.rpath = buf;
1093 }
1094 }
1095 break;
1096 case OPTION_RPATH_LINK:
1097 if (command_line.rpath_link == NULL)
1098 command_line.rpath_link = xstrdup (optarg);
1099 else
1100 {
1101 char *buf;
1102
1103 buf = xmalloc (strlen (command_line.rpath_link)
1104 + strlen (optarg)
1105 + 2);
1106 sprintf (buf, "%s%c%s", command_line.rpath_link,
1107 config.rpath_separator, optarg);
1108 free (command_line.rpath_link);
1109 command_line.rpath_link = buf;
1110 }
1111 break;
1112 case OPTION_RELAX:
1113 command_line.relax = TRUE;
1114 break;
1115 case OPTION_RETAIN_SYMBOLS_FILE:
1116 add_keepsyms_file (optarg);
1117 break;
1118 case 'S':
1119 link_info.strip = strip_debugger;
1120 break;
1121 case 's':
1122 link_info.strip = strip_all;
1123 break;
1124 case OPTION_STRIP_DISCARDED:
1125 link_info.strip_discarded = TRUE;
1126 break;
1127 case OPTION_NO_STRIP_DISCARDED:
1128 link_info.strip_discarded = FALSE;
1129 break;
1130 case OPTION_SHARED:
1131 if (config.has_shared)
1132 {
1133 link_info.shared = TRUE;
1134 /* When creating a shared library, the default
1135 behaviour is to ignore any unresolved references. */
1136 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1137 link_info.unresolved_syms_in_objects = RM_IGNORE;
1138 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1139 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1140 }
1141 else
1142 einfo (_("%P%F: -shared not supported\n"));
1143 break;
1144 case OPTION_PIE:
1145 if (config.has_shared)
1146 {
1147 link_info.shared = TRUE;
1148 link_info.pie = TRUE;
1149 }
1150 else
1151 einfo (_("%P%F: -pie not supported\n"));
1152 break;
1153 case 'h': /* Used on Solaris. */
1154 case OPTION_SONAME:
1155 command_line.soname = optarg;
1156 break;
1157 case OPTION_SORT_COMMON:
1158 if (optarg == NULL
1159 || strcmp (optarg, N_("descending")) == 0)
1160 config.sort_common = sort_descending;
1161 else if (strcmp (optarg, N_("ascending")) == 0)
1162 config.sort_common = sort_ascending;
1163 else
1164 einfo (_("%P%F: invalid common section sorting option: %s\n"),
1165 optarg);
1166 break;
1167 case OPTION_SORT_SECTION:
1168 if (strcmp (optarg, N_("name")) == 0)
1169 sort_section = by_name;
1170 else if (strcmp (optarg, N_("alignment")) == 0)
1171 sort_section = by_alignment;
1172 else
1173 einfo (_("%P%F: invalid section sorting option: %s\n"),
1174 optarg);
1175 break;
1176 case OPTION_STATS:
1177 config.stats = TRUE;
1178 break;
1179 case OPTION_SYMBOLIC:
1180 command_line.symbolic = symbolic;
1181 break;
1182 case OPTION_SYMBOLIC_FUNCTIONS:
1183 command_line.symbolic = symbolic_functions;
1184 break;
1185 case 't':
1186 trace_files = TRUE;
1187 break;
1188 case 'T':
1189 previous_script_handle = saved_script_handle;
1190 ldfile_open_command_file (optarg);
1191 parser_input = input_script;
1192 yyparse ();
1193 previous_script_handle = NULL;
1194 break;
1195 case OPTION_DEFAULT_SCRIPT:
1196 command_line.default_script = optarg;
1197 break;
1198 case OPTION_SECTION_START:
1199 {
1200 char *optarg2;
1201 char *sec_name;
1202 int len;
1203
1204 /* Check for <something>=<somthing>... */
1205 optarg2 = strchr (optarg, '=');
1206 if (optarg2 == NULL)
1207 einfo (_("%P%F: invalid argument to option"
1208 " \"--section-start\"\n"));
1209
1210 optarg2++;
1211
1212 /* So far so good. Are all the args present? */
1213 if ((*optarg == '\0') || (*optarg2 == '\0'))
1214 einfo (_("%P%F: missing argument(s) to option"
1215 " \"--section-start\"\n"));
1216
1217 /* We must copy the section name as set_section_start
1218 doesn't do it for us. */
1219 len = optarg2 - optarg;
1220 sec_name = xmalloc (len);
1221 memcpy (sec_name, optarg, len - 1);
1222 sec_name[len - 1] = 0;
1223
1224 /* Then set it... */
1225 set_section_start (sec_name, optarg2);
1226 }
1227 break;
1228 case OPTION_TARGET_HELP:
1229 /* Mention any target specific options. */
1230 ldemul_list_emulation_options (stdout);
1231 exit (0);
1232 case OPTION_TBSS:
1233 set_segment_start (".bss", optarg);
1234 break;
1235 case OPTION_TDATA:
1236 set_segment_start (".data", optarg);
1237 break;
1238 case OPTION_TTEXT:
1239 set_segment_start (".text", optarg);
1240 break;
1241 case OPTION_TRADITIONAL_FORMAT:
1242 link_info.traditional_format = TRUE;
1243 break;
1244 case OPTION_TASK_LINK:
1245 link_info.task_link = TRUE;
1246 /* Fall through - do an implied -r option. */
1247 case OPTION_UR:
1248 link_info.relocatable = TRUE;
1249 config.build_constructors = TRUE;
1250 config.magic_demand_paged = FALSE;
1251 config.text_read_only = FALSE;
1252 config.dynamic_link = FALSE;
1253 break;
1254 case 'u':
1255 ldlang_add_undef (optarg);
1256 break;
1257 case OPTION_UNIQUE:
1258 if (optarg != NULL)
1259 lang_add_unique (optarg);
1260 else
1261 config.unique_orphan_sections = TRUE;
1262 break;
1263 case OPTION_VERBOSE:
1264 ldversion (1);
1265 version_printed = TRUE;
1266 trace_file_tries = TRUE;
1267 overflow_cutoff_limit = -2;
1268 break;
1269 case 'v':
1270 ldversion (0);
1271 version_printed = TRUE;
1272 break;
1273 case 'V':
1274 ldversion (1);
1275 version_printed = TRUE;
1276 break;
1277 case OPTION_VERSION:
1278 ldversion (2);
1279 xexit (0);
1280 break;
1281 case OPTION_VERSION_SCRIPT:
1282 /* This option indicates a small script that only specifies
1283 version information. Read it, but don't assume that
1284 we've seen a linker script. */
1285 {
1286 FILE *hold_script_handle;
1287
1288 hold_script_handle = saved_script_handle;
1289 ldfile_open_command_file (optarg);
1290 saved_script_handle = hold_script_handle;
1291 parser_input = input_version_script;
1292 yyparse ();
1293 }
1294 break;
1295 case OPTION_VERSION_EXPORTS_SECTION:
1296 /* This option records a version symbol to be applied to the
1297 symbols listed for export to be found in the object files
1298 .exports sections. */
1299 command_line.version_exports_section = optarg;
1300 break;
1301 case OPTION_DYNAMIC_LIST_DATA:
1302 command_line.dynamic_list = dynamic_list_data;
1303 if (command_line.symbolic == symbolic)
1304 command_line.symbolic = symbolic_unset;
1305 break;
1306 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1307 lang_append_dynamic_list_cpp_typeinfo ();
1308 if (command_line.dynamic_list != dynamic_list_data)
1309 command_line.dynamic_list = dynamic_list;
1310 if (command_line.symbolic == symbolic)
1311 command_line.symbolic = symbolic_unset;
1312 break;
1313 case OPTION_DYNAMIC_LIST_CPP_NEW:
1314 lang_append_dynamic_list_cpp_new ();
1315 if (command_line.dynamic_list != dynamic_list_data)
1316 command_line.dynamic_list = dynamic_list;
1317 if (command_line.symbolic == symbolic)
1318 command_line.symbolic = symbolic_unset;
1319 break;
1320 case OPTION_DYNAMIC_LIST:
1321 /* This option indicates a small script that only specifies
1322 a dynamic list. Read it, but don't assume that we've
1323 seen a linker script. */
1324 {
1325 FILE *hold_script_handle;
1326
1327 hold_script_handle = saved_script_handle;
1328 ldfile_open_command_file (optarg);
1329 saved_script_handle = hold_script_handle;
1330 parser_input = input_dynamic_list;
1331 yyparse ();
1332 }
1333 if (command_line.dynamic_list != dynamic_list_data)
1334 command_line.dynamic_list = dynamic_list;
1335 if (command_line.symbolic == symbolic)
1336 command_line.symbolic = symbolic_unset;
1337 break;
1338 case OPTION_WARN_COMMON:
1339 config.warn_common = TRUE;
1340 break;
1341 case OPTION_WARN_CONSTRUCTORS:
1342 config.warn_constructors = TRUE;
1343 break;
1344 case OPTION_WARN_FATAL:
1345 config.fatal_warnings = TRUE;
1346 break;
1347 case OPTION_NO_WARN_FATAL:
1348 config.fatal_warnings = FALSE;
1349 break;
1350 case OPTION_WARN_MULTIPLE_GP:
1351 config.warn_multiple_gp = TRUE;
1352 break;
1353 case OPTION_WARN_ONCE:
1354 config.warn_once = TRUE;
1355 break;
1356 case OPTION_WARN_SECTION_ALIGN:
1357 config.warn_section_align = TRUE;
1358 break;
1359 case OPTION_WARN_SHARED_TEXTREL:
1360 link_info.warn_shared_textrel = TRUE;
1361 break;
1362 case OPTION_WHOLE_ARCHIVE:
1363 whole_archive = TRUE;
1364 break;
1365 case OPTION_ADD_NEEDED:
1366 add_needed = TRUE;
1367 break;
1368 case OPTION_NO_ADD_NEEDED:
1369 add_needed = FALSE;
1370 break;
1371 case OPTION_AS_NEEDED:
1372 as_needed = TRUE;
1373 break;
1374 case OPTION_NO_AS_NEEDED:
1375 as_needed = FALSE;
1376 break;
1377 case OPTION_WRAP:
1378 add_wrap (optarg);
1379 break;
1380 case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1381 add_ignoresym (optarg);
1382 break;
1383 case OPTION_DISCARD_NONE:
1384 link_info.discard = discard_none;
1385 break;
1386 case 'X':
1387 link_info.discard = discard_l;
1388 break;
1389 case 'x':
1390 link_info.discard = discard_all;
1391 break;
1392 case 'Y':
1393 if (CONST_STRNEQ (optarg, "P,"))
1394 optarg += 2;
1395 if (default_dirlist != NULL)
1396 free (default_dirlist);
1397 default_dirlist = xstrdup (optarg);
1398 break;
1399 case 'y':
1400 add_ysym (optarg);
1401 break;
1402 case OPTION_SPARE_DYNAMIC_TAGS:
1403 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1404 break;
1405 case OPTION_SPLIT_BY_RELOC:
1406 if (optarg != NULL)
1407 config.split_by_reloc = strtoul (optarg, NULL, 0);
1408 else
1409 config.split_by_reloc = 32768;
1410 break;
1411 case OPTION_SPLIT_BY_FILE:
1412 if (optarg != NULL)
1413 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1414 else
1415 config.split_by_file = 1;
1416 break;
1417 case OPTION_CHECK_SECTIONS:
1418 command_line.check_section_addresses = TRUE;
1419 break;
1420 case OPTION_NO_CHECK_SECTIONS:
1421 command_line.check_section_addresses = FALSE;
1422 break;
1423 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1424 command_line.accept_unknown_input_arch = TRUE;
1425 break;
1426 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1427 command_line.accept_unknown_input_arch = FALSE;
1428 break;
1429 case '(':
1430 if (ingroup)
1431 einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1432
1433 lang_enter_group ();
1434 ingroup = 1;
1435 break;
1436 case ')':
1437 if (! ingroup)
1438 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1439
1440 lang_leave_group ();
1441 ingroup = 0;
1442 break;
1443
1444 case OPTION_INIT:
1445 link_info.init_function = optarg;
1446 break;
1447
1448 case OPTION_FINI:
1449 link_info.fini_function = optarg;
1450 break;
1451
1452 case OPTION_REDUCE_MEMORY_OVERHEADS:
1453 link_info.reduce_memory_overheads = TRUE;
1454 if (config.hash_table_size == 0)
1455 config.hash_table_size = 1021;
1456 break;
1457
1458 case OPTION_HASH_SIZE:
1459 {
1460 bfd_size_type new_size;
1461
1462 new_size = strtoul (optarg, NULL, 0);
1463 if (new_size)
1464 config.hash_table_size = new_size;
1465 else
1466 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1467 }
1468 break;
1469 }
1470 }
1471
1472 if (ingroup)
1473 lang_leave_group ();
1474
1475 if (default_dirlist != NULL)
1476 {
1477 set_default_dirlist (default_dirlist);
1478 free (default_dirlist);
1479 }
1480
1481 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1482 /* FIXME: Should we allow emulations a chance to set this ? */
1483 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1484
1485 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1486 /* FIXME: Should we allow emulations a chance to set this ? */
1487 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1488 }
1489
1490 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1491 library search path. */
1492
1493 static void
1494 set_default_dirlist (char *dirlist_ptr)
1495 {
1496 char *p;
1497
1498 while (1)
1499 {
1500 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1501 if (p != NULL)
1502 *p = '\0';
1503 if (*dirlist_ptr != '\0')
1504 ldfile_add_library_path (dirlist_ptr, TRUE);
1505 if (p == NULL)
1506 break;
1507 dirlist_ptr = p + 1;
1508 }
1509 }
1510
1511 static void
1512 set_section_start (char *sect, char *valstr)
1513 {
1514 const char *end;
1515 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1516 if (*end)
1517 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1518 lang_section_start (sect, exp_intop (val), NULL);
1519 }
1520
1521 static void
1522 set_segment_start (const char *section, char *valstr)
1523 {
1524 const char *name;
1525 const char *end;
1526 segment_type *seg;
1527
1528 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1529 if (*end)
1530 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1531 /* If we already have an entry for this segment, update the existing
1532 value. */
1533 name = section + 1;
1534 for (seg = segments; seg; seg = seg->next)
1535 if (strcmp (seg->name, name) == 0)
1536 {
1537 seg->value = val;
1538 return;
1539 }
1540 /* There was no existing value so we must create a new segment
1541 entry. */
1542 seg = stat_alloc (sizeof (*seg));
1543 seg->name = name;
1544 seg->value = val;
1545 seg->used = FALSE;
1546 /* Add it to the linked list of segments. */
1547 seg->next = segments;
1548 segments = seg;
1549 /* Historically, -Ttext and friends set the base address of a
1550 particular section. For backwards compatibility, we still do
1551 that. If a SEGMENT_START directive is seen, the section address
1552 assignment will be disabled. */
1553 lang_section_start (section, exp_intop (val), seg);
1554 }
1555
1556 \f
1557 /* Print help messages for the options. */
1558
1559 static void
1560 help (void)
1561 {
1562 unsigned i;
1563 const char **targets, **pp;
1564 int len;
1565
1566 printf (_("Usage: %s [options] file...\n"), program_name);
1567
1568 printf (_("Options:\n"));
1569 for (i = 0; i < OPTION_COUNT; i++)
1570 {
1571 if (ld_options[i].doc != NULL)
1572 {
1573 bfd_boolean comma;
1574 unsigned j;
1575
1576 printf (" ");
1577
1578 comma = FALSE;
1579 len = 2;
1580
1581 j = i;
1582 do
1583 {
1584 if (ld_options[j].shortopt != '\0'
1585 && ld_options[j].control != NO_HELP)
1586 {
1587 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1588 len += (comma ? 2 : 0) + 2;
1589 if (ld_options[j].arg != NULL)
1590 {
1591 if (ld_options[j].opt.has_arg != optional_argument)
1592 {
1593 printf (" ");
1594 ++len;
1595 }
1596 printf ("%s", _(ld_options[j].arg));
1597 len += strlen (_(ld_options[j].arg));
1598 }
1599 comma = TRUE;
1600 }
1601 ++j;
1602 }
1603 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1604
1605 j = i;
1606 do
1607 {
1608 if (ld_options[j].opt.name != NULL
1609 && ld_options[j].control != NO_HELP)
1610 {
1611 int two_dashes =
1612 (ld_options[j].control == TWO_DASHES
1613 || ld_options[j].control == EXACTLY_TWO_DASHES);
1614
1615 printf ("%s-%s%s",
1616 comma ? ", " : "",
1617 two_dashes ? "-" : "",
1618 ld_options[j].opt.name);
1619 len += ((comma ? 2 : 0)
1620 + 1
1621 + (two_dashes ? 1 : 0)
1622 + strlen (ld_options[j].opt.name));
1623 if (ld_options[j].arg != NULL)
1624 {
1625 printf (" %s", _(ld_options[j].arg));
1626 len += 1 + strlen (_(ld_options[j].arg));
1627 }
1628 comma = TRUE;
1629 }
1630 ++j;
1631 }
1632 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1633
1634 if (len >= 30)
1635 {
1636 printf ("\n");
1637 len = 0;
1638 }
1639
1640 for (; len < 30; len++)
1641 putchar (' ');
1642
1643 printf ("%s\n", _(ld_options[i].doc));
1644 }
1645 }
1646 printf (_(" @FILE"));
1647 for (len = strlen (" @FILE"); len < 30; len++)
1648 putchar (' ');
1649 printf (_("Read options from FILE\n"));
1650
1651 /* Note: Various tools (such as libtool) depend upon the
1652 format of the listings below - do not change them. */
1653 /* xgettext:c-format */
1654 printf (_("%s: supported targets:"), program_name);
1655 targets = bfd_target_list ();
1656 for (pp = targets; *pp != NULL; pp++)
1657 printf (" %s", *pp);
1658 free (targets);
1659 printf ("\n");
1660
1661 /* xgettext:c-format */
1662 printf (_("%s: supported emulations: "), program_name);
1663 ldemul_list_emulations (stdout);
1664 printf ("\n");
1665
1666 /* xgettext:c-format */
1667 printf (_("%s: emulation specific options:\n"), program_name);
1668 ldemul_list_emulation_options (stdout);
1669 printf ("\n");
1670
1671 if (REPORT_BUGS_TO[0])
1672 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1673 }
NetBSD on the FriendlyARM MINI2440