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PR 9934
[binutils.git] / ld / lexsup.c
blob4dcfc3c65399b0bf5f63644c6235549be89cda00
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_TTEXT_SEGMENT,
107 OPTION_TRADITIONAL_FORMAT,
108 OPTION_UR,
109 OPTION_VERBOSE,
110 OPTION_VERSION,
111 OPTION_VERSION_SCRIPT,
112 OPTION_VERSION_EXPORTS_SECTION,
113 OPTION_DYNAMIC_LIST,
114 OPTION_DYNAMIC_LIST_CPP_NEW,
115 OPTION_DYNAMIC_LIST_CPP_TYPEINFO,
116 OPTION_DYNAMIC_LIST_DATA,
117 OPTION_WARN_COMMON,
118 OPTION_WARN_CONSTRUCTORS,
119 OPTION_WARN_FATAL,
120 OPTION_NO_WARN_FATAL,
121 OPTION_WARN_MULTIPLE_GP,
122 OPTION_WARN_ONCE,
123 OPTION_WARN_SECTION_ALIGN,
124 OPTION_SPLIT_BY_RELOC,
125 OPTION_SPLIT_BY_FILE ,
126 OPTION_WHOLE_ARCHIVE,
127 OPTION_ADD_NEEDED,
128 OPTION_NO_ADD_NEEDED,
129 OPTION_AS_NEEDED,
130 OPTION_NO_AS_NEEDED,
131 OPTION_WRAP,
132 OPTION_FORCE_EXE_SUFFIX,
133 OPTION_GC_SECTIONS,
134 OPTION_NO_GC_SECTIONS,
135 OPTION_PRINT_GC_SECTIONS,
136 OPTION_NO_PRINT_GC_SECTIONS,
137 OPTION_HASH_SIZE,
138 OPTION_CHECK_SECTIONS,
139 OPTION_NO_CHECK_SECTIONS,
140 OPTION_NO_UNDEFINED,
141 OPTION_INIT,
142 OPTION_FINI,
143 OPTION_SECTION_START,
144 OPTION_UNIQUE,
145 OPTION_TARGET_HELP,
146 OPTION_ALLOW_SHLIB_UNDEFINED,
147 OPTION_NO_ALLOW_SHLIB_UNDEFINED,
148 OPTION_ALLOW_MULTIPLE_DEFINITION,
149 OPTION_NO_UNDEFINED_VERSION,
150 OPTION_DEFAULT_SYMVER,
151 OPTION_DEFAULT_IMPORTED_SYMVER,
152 OPTION_DISCARD_NONE,
153 OPTION_SPARE_DYNAMIC_TAGS,
154 OPTION_NO_DEFINE_COMMON,
155 OPTION_NOSTDLIB,
156 OPTION_NO_OMAGIC,
157 OPTION_STRIP_DISCARDED,
158 OPTION_NO_STRIP_DISCARDED,
159 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
160 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
161 OPTION_PIE,
162 OPTION_UNRESOLVED_SYMBOLS,
163 OPTION_WARN_UNRESOLVED_SYMBOLS,
164 OPTION_ERROR_UNRESOLVED_SYMBOLS,
165 OPTION_WARN_SHARED_TEXTREL,
166 OPTION_REDUCE_MEMORY_OVERHEADS,
167 OPTION_DEFAULT_SCRIPT
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. */
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 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
517 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
518 { {"unresolved-symbols=<method>", required_argument, NULL,
519 OPTION_UNRESOLVED_SYMBOLS},
520 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
521 " ignore-all, report-all, ignore-in-object-files,\n"
522 " ignore-in-shared-libs"),
523 TWO_DASHES },
524 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
525 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
526 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
527 '\0', NULL, NULL, NO_HELP },
528 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
529 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
530 { {"version-exports-section", required_argument, NULL,
531 OPTION_VERSION_EXPORTS_SECTION },
532 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
533 " SYMBOL as the version."),
534 TWO_DASHES },
535 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
536 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
537 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
538 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
539 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
540 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
541 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
542 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
543 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
544 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
545 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
546 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
547 TWO_DASHES },
548 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
549 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
550 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
551 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
552 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
553 '\0', NULL, N_("Warn if start of section changes due to alignment"),
554 TWO_DASHES },
555 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
556 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
557 TWO_DASHES },
558 { {"warn-unresolved-symbols", no_argument, NULL,
559 OPTION_WARN_UNRESOLVED_SYMBOLS},
560 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
561 { {"error-unresolved-symbols", no_argument, NULL,
562 OPTION_ERROR_UNRESOLVED_SYMBOLS},
563 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
564 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
565 '\0', NULL, N_("Include all objects from following archives"),
566 TWO_DASHES },
567 { {"wrap", required_argument, NULL, OPTION_WRAP},
568 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
569 };
570
571 #define OPTION_COUNT ARRAY_SIZE (ld_options)
572
573 void
574 parse_args (unsigned argc, char **argv)
575 {
576 unsigned i;
577 int is, il, irl;
578 int ingroup = 0;
579 char *default_dirlist = NULL;
580 char *shortopts;
581 struct option *longopts;
582 struct option *really_longopts;
583 int last_optind;
584 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
585
586 shortopts = xmalloc (OPTION_COUNT * 3 + 2);
587 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
588 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
589
590 /* Starting the short option string with '-' is for programs that
591 expect options and other ARGV-elements in any order and that care about
592 the ordering of the two. We describe each non-option ARGV-element
593 as if it were the argument of an option with character code 1. */
594 shortopts[0] = '-';
595 is = 1;
596 il = 0;
597 irl = 0;
598 for (i = 0; i < OPTION_COUNT; i++)
599 {
600 if (ld_options[i].shortopt != '\0')
601 {
602 shortopts[is] = ld_options[i].shortopt;
603 ++is;
604 if (ld_options[i].opt.has_arg == required_argument
605 || ld_options[i].opt.has_arg == optional_argument)
606 {
607 shortopts[is] = ':';
608 ++is;
609 if (ld_options[i].opt.has_arg == optional_argument)
610 {
611 shortopts[is] = ':';
612 ++is;
613 }
614 }
615 }
616 if (ld_options[i].opt.name != NULL)
617 {
618 if (ld_options[i].control == EXACTLY_TWO_DASHES)
619 {
620 really_longopts[irl] = ld_options[i].opt;
621 ++irl;
622 }
623 else
624 {
625 longopts[il] = ld_options[i].opt;
626 ++il;
627 }
628 }
629 }
630 shortopts[is] = '\0';
631 longopts[il].name = NULL;
632 really_longopts[irl].name = NULL;
633
634 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
635
636 /* The -G option is ambiguous on different platforms. Sometimes it
637 specifies the largest data size to put into the small data
638 section. Sometimes it is equivalent to --shared. Unfortunately,
639 the first form takes an argument, while the second does not.
640
641 We need to permit the --shared form because on some platforms,
642 such as Solaris, gcc -shared will pass -G to the linker.
643
644 To permit either usage, we look through the argument list. If we
645 find -G not followed by a number, we change it into --shared.
646 This will work for most normal cases. */
647 for (i = 1; i < argc; i++)
648 if (strcmp (argv[i], "-G") == 0
649 && (i + 1 >= argc
650 || ! ISDIGIT (argv[i + 1][0])))
651 argv[i] = (char *) "--shared";
652
653 /* Because we permit long options to start with a single dash, and
654 we have a --library option, and the -l option is conventionally
655 used with an immediately following argument, we can have bad
656 results if somebody tries to use -l with a library whose name
657 happens to start with "ibrary", as in -li. We avoid problems by
658 simply turning -l into --library. This means that users will
659 have to use two dashes in order to use --library, which is OK
660 since that's how it is documented.
661
662 FIXME: It's possible that this problem can arise for other short
663 options as well, although the user does always have the recourse
664 of adding a space between the option and the argument. */
665 for (i = 1; i < argc; i++)
666 {
667 if (argv[i][0] == '-'
668 && argv[i][1] == 'l'
669 && argv[i][2] != '\0')
670 {
671 char *n;
672
673 n = xmalloc (strlen (argv[i]) + 20);
674 sprintf (n, "--library=%s", argv[i] + 2);
675 argv[i] = n;
676 }
677 }
678
679 last_optind = -1;
680 while (1)
681 {
682 int longind;
683 int optc;
684
685 /* Using last_optind lets us avoid calling ldemul_parse_args
686 multiple times on a single option, which would lead to
687 confusion in the internal static variables maintained by
688 getopt. This could otherwise happen for an argument like
689 -nx, in which the -n is parsed as a single option, and we
690 loop around to pick up the -x. */
691 if (optind != last_optind)
692 if (ldemul_parse_args (argc, argv))
693 continue;
694
695 /* getopt_long_only is like getopt_long, but '-' as well as '--'
696 can indicate a long option. */
697 opterr = 0;
698 last_optind = optind;
699 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
700 if (optc == '?')
701 {
702 optind = last_optind;
703 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
704 }
705
706 if (ldemul_handle_option (optc))
707 continue;
708
709 if (optc == -1)
710 break;
711
712 switch (optc)
713 {
714 case '?':
715 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
716 /* Fall through. */
717
718 default:
719 einfo (_("%P%F: use the --help option for usage information\n"));
720
721 case 1: /* File name. */
722 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
723 break;
724
725 case OPTION_IGNORE:
726 break;
727 case 'a':
728 /* For HP/UX compatibility. Actually -a shared should mean
729 ``use only shared libraries'' but, then, we don't
730 currently support shared libraries on HP/UX anyhow. */
731 if (strcmp (optarg, "archive") == 0)
732 config.dynamic_link = FALSE;
733 else if (strcmp (optarg, "shared") == 0
734 || strcmp (optarg, "default") == 0)
735 config.dynamic_link = TRUE;
736 else
737 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
738 break;
739 case OPTION_ASSERT:
740 /* FIXME: We just ignore these, but we should handle them. */
741 if (strcmp (optarg, "definitions") == 0)
742 ;
743 else if (strcmp (optarg, "nodefinitions") == 0)
744 ;
745 else if (strcmp (optarg, "nosymbolic") == 0)
746 ;
747 else if (strcmp (optarg, "pure-text") == 0)
748 ;
749 else
750 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
751 break;
752 case 'A':
753 ldfile_add_arch (optarg);
754 break;
755 case 'b':
756 lang_add_target (optarg);
757 break;
758 case 'c':
759 ldfile_open_command_file (optarg);
760 parser_input = input_mri_script;
761 yyparse ();
762 break;
763 case OPTION_CALL_SHARED:
764 config.dynamic_link = TRUE;
765 break;
766 case OPTION_NON_SHARED:
767 config.dynamic_link = FALSE;
768 break;
769 case OPTION_CREF:
770 command_line.cref = TRUE;
771 link_info.notice_all = TRUE;
772 break;
773 case 'd':
774 command_line.force_common_definition = TRUE;
775 break;
776 case OPTION_DEFSYM:
777 lex_string = optarg;
778 lex_redirect (optarg);
779 parser_input = input_defsym;
780 parsing_defsym = 1;
781 yyparse ();
782 parsing_defsym = 0;
783 lex_string = NULL;
784 break;
785 case OPTION_DEMANGLE:
786 demangling = TRUE;
787 if (optarg != NULL)
788 {
789 enum demangling_styles style;
790
791 style = cplus_demangle_name_to_style (optarg);
792 if (style == unknown_demangling)
793 einfo (_("%F%P: unknown demangling style `%s'"),
794 optarg);
795
796 cplus_demangle_set_style (style);
797 }
798 break;
799 case 'I': /* Used on Solaris. */
800 case OPTION_DYNAMIC_LINKER:
801 command_line.interpreter = optarg;
802 break;
803 case OPTION_SYSROOT:
804 /* Already handled in ldmain.c. */
805 break;
806 case OPTION_EB:
807 command_line.endian = ENDIAN_BIG;
808 break;
809 case OPTION_EL:
810 command_line.endian = ENDIAN_LITTLE;
811 break;
812 case OPTION_EMBEDDED_RELOCS:
813 command_line.embedded_relocs = TRUE;
814 break;
815 case OPTION_EXPORT_DYNAMIC:
816 case 'E': /* HP/UX compatibility. */
817 link_info.export_dynamic = TRUE;
818 break;
819 case 'e':
820 lang_add_entry (optarg, TRUE);
821 break;
822 case 'f':
823 if (command_line.auxiliary_filters == NULL)
824 {
825 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *));
826 command_line.auxiliary_filters[0] = optarg;
827 command_line.auxiliary_filters[1] = NULL;
828 }
829 else
830 {
831 int c;
832 char **p;
833
834 c = 0;
835 for (p = command_line.auxiliary_filters; *p != NULL; p++)
836 ++c;
837 command_line.auxiliary_filters
838 = xrealloc (command_line.auxiliary_filters,
839 (c + 2) * sizeof (char *));
840 command_line.auxiliary_filters[c] = optarg;
841 command_line.auxiliary_filters[c + 1] = NULL;
842 }
843 break;
844 case 'F':
845 command_line.filter_shlib = optarg;
846 break;
847 case OPTION_FORCE_EXE_SUFFIX:
848 command_line.force_exe_suffix = TRUE;
849 break;
850 case 'G':
851 {
852 char *end;
853 g_switch_value = strtoul (optarg, &end, 0);
854 if (*end)
855 einfo (_("%P%F: invalid number `%s'\n"), optarg);
856 }
857 break;
858 case 'g':
859 /* Ignore. */
860 break;
861 case OPTION_GC_SECTIONS:
862 link_info.gc_sections = TRUE;
863 break;
864 case OPTION_PRINT_GC_SECTIONS:
865 link_info.print_gc_sections = TRUE;
866 break;
867 case OPTION_HELP:
868 help ();
869 xexit (0);
870 break;
871 case 'L':
872 ldfile_add_library_path (optarg, TRUE);
873 break;
874 case 'l':
875 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
876 break;
877 case 'M':
878 config.map_filename = "-";
879 break;
880 case 'm':
881 /* Ignore. Was handled in a pre-parse. */
882 break;
883 case OPTION_MAP:
884 config.map_filename = optarg;
885 break;
886 case 'N':
887 config.text_read_only = FALSE;
888 config.magic_demand_paged = FALSE;
889 config.dynamic_link = FALSE;
890 break;
891 case OPTION_NO_OMAGIC:
892 config.text_read_only = TRUE;
893 config.magic_demand_paged = TRUE;
894 /* NB/ Does not set dynamic_link to TRUE.
895 Use --call-shared or -Bdynamic for this. */
896 break;
897 case 'n':
898 config.magic_demand_paged = FALSE;
899 config.dynamic_link = FALSE;
900 break;
901 case OPTION_NO_DEFINE_COMMON:
902 command_line.inhibit_common_definition = TRUE;
903 break;
904 case OPTION_NO_DEMANGLE:
905 demangling = FALSE;
906 break;
907 case OPTION_NO_GC_SECTIONS:
908 link_info.gc_sections = FALSE;
909 break;
910 case OPTION_NO_PRINT_GC_SECTIONS:
911 link_info.print_gc_sections = FALSE;
912 break;
913 case OPTION_NO_KEEP_MEMORY:
914 link_info.keep_memory = FALSE;
915 break;
916 case OPTION_NO_UNDEFINED:
917 link_info.unresolved_syms_in_objects
918 = how_to_report_unresolved_symbols;
919 break;
920 case OPTION_ALLOW_SHLIB_UNDEFINED:
921 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
922 break;
923 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
924 link_info.unresolved_syms_in_shared_libs
925 = how_to_report_unresolved_symbols;
926 break;
927 case OPTION_UNRESOLVED_SYMBOLS:
928 if (strcmp (optarg, "ignore-all") == 0)
929 {
930 link_info.unresolved_syms_in_objects = RM_IGNORE;
931 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
932 }
933 else if (strcmp (optarg, "report-all") == 0)
934 {
935 link_info.unresolved_syms_in_objects
936 = how_to_report_unresolved_symbols;
937 link_info.unresolved_syms_in_shared_libs
938 = how_to_report_unresolved_symbols;
939 }
940 else if (strcmp (optarg, "ignore-in-object-files") == 0)
941 {
942 link_info.unresolved_syms_in_objects = RM_IGNORE;
943 link_info.unresolved_syms_in_shared_libs
944 = how_to_report_unresolved_symbols;
945 }
946 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
947 {
948 link_info.unresolved_syms_in_objects
949 = how_to_report_unresolved_symbols;
950 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
951 }
952 else
953 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
954 break;
955 case OPTION_WARN_UNRESOLVED_SYMBOLS:
956 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
957 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
958 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
959 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
960 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
961 break;
962
963 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
964 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
965 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
966 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
967 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
968 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
969 break;
970 case OPTION_ALLOW_MULTIPLE_DEFINITION:
971 link_info.allow_multiple_definition = TRUE;
972 break;
973 case OPTION_NO_UNDEFINED_VERSION:
974 link_info.allow_undefined_version = FALSE;
975 break;
976 case OPTION_DEFAULT_SYMVER:
977 link_info.create_default_symver = TRUE;
978 break;
979 case OPTION_DEFAULT_IMPORTED_SYMVER:
980 link_info.default_imported_symver = TRUE;
981 break;
982 case OPTION_NO_WARN_MISMATCH:
983 command_line.warn_mismatch = FALSE;
984 break;
985 case OPTION_NO_WARN_SEARCH_MISMATCH:
986 command_line.warn_search_mismatch = FALSE;
987 break;
988 case OPTION_NOINHIBIT_EXEC:
989 force_make_executable = TRUE;
990 break;
991 case OPTION_NOSTDLIB:
992 config.only_cmd_line_lib_dirs = TRUE;
993 break;
994 case OPTION_NO_WHOLE_ARCHIVE:
995 whole_archive = FALSE;
996 break;
997 case 'O':
998 /* FIXME "-O<non-digits> <value>" used to set the address of
999 section <non-digits>. Was this for compatibility with
1000 something, or can we create a new option to do that
1001 (with a syntax similar to -defsym)?
1002 getopt can't handle two args to an option without kludges. */
1003
1004 /* Enable optimizations of output files. */
1005 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1006 break;
1007 case 'o':
1008 lang_add_output (optarg, 0);
1009 break;
1010 case OPTION_OFORMAT:
1011 lang_add_output_format (optarg, NULL, NULL, 0);
1012 break;
1013 case 'q':
1014 link_info.emitrelocations = TRUE;
1015 break;
1016 case 'i':
1017 case 'r':
1018 if (optind == last_optind)
1019 /* This can happen if the user put "-rpath,a" on the command
1020 line. (Or something similar. The comma is important).
1021 Getopt becomes confused and thinks that this is a -r option
1022 but it cannot parse the text after the -r so it refuses to
1023 increment the optind counter. Detect this case and issue
1024 an error message here. We cannot just make this a warning,
1025 increment optind, and continue because getopt is too confused
1026 and will seg-fault the next time around. */
1027 einfo(_("%P%F: bad -rpath option\n"));
1028
1029 link_info.relocatable = TRUE;
1030 config.build_constructors = FALSE;
1031 config.magic_demand_paged = FALSE;
1032 config.text_read_only = FALSE;
1033 config.dynamic_link = FALSE;
1034 break;
1035 case 'R':
1036 /* The GNU linker traditionally uses -R to mean to include
1037 only the symbols from a file. The Solaris linker uses -R
1038 to set the path used by the runtime linker to find
1039 libraries. This is the GNU linker -rpath argument. We
1040 try to support both simultaneously by checking the file
1041 named. If it is a directory, rather than a regular file,
1042 we assume -rpath was meant. */
1043 {
1044 struct stat s;
1045
1046 if (stat (optarg, &s) >= 0
1047 && ! S_ISDIR (s.st_mode))
1048 {
1049 lang_add_input_file (optarg,
1050 lang_input_file_is_symbols_only_enum,
1051 NULL);
1052 break;
1053 }
1054 }
1055 /* Fall through. */
1056 case OPTION_RPATH:
1057 if (command_line.rpath == NULL)
1058 command_line.rpath = xstrdup (optarg);
1059 else
1060 {
1061 size_t rpath_len = strlen (command_line.rpath);
1062 size_t optarg_len = strlen (optarg);
1063 char *buf;
1064 char *cp = command_line.rpath;
1065
1066 /* First see whether OPTARG is already in the path. */
1067 do
1068 {
1069 if (strncmp (optarg, cp, optarg_len) == 0
1070 && (cp[optarg_len] == 0
1071 || cp[optarg_len] == config.rpath_separator))
1072 /* We found it. */
1073 break;
1074
1075 /* Not yet found. */
1076 cp = strchr (cp, config.rpath_separator);
1077 if (cp != NULL)
1078 ++cp;
1079 }
1080 while (cp != NULL);
1081
1082 if (cp == NULL)
1083 {
1084 buf = xmalloc (rpath_len + optarg_len + 2);
1085 sprintf (buf, "%s%c%s", command_line.rpath,
1086 config.rpath_separator, optarg);
1087 free (command_line.rpath);
1088 command_line.rpath = buf;
1089 }
1090 }
1091 break;
1092 case OPTION_RPATH_LINK:
1093 if (command_line.rpath_link == NULL)
1094 command_line.rpath_link = xstrdup (optarg);
1095 else
1096 {
1097 char *buf;
1098
1099 buf = xmalloc (strlen (command_line.rpath_link)
1100 + strlen (optarg)
1101 + 2);
1102 sprintf (buf, "%s%c%s", command_line.rpath_link,
1103 config.rpath_separator, optarg);
1104 free (command_line.rpath_link);
1105 command_line.rpath_link = buf;
1106 }
1107 break;
1108 case OPTION_RELAX:
1109 command_line.relax = TRUE;
1110 break;
1111 case OPTION_RETAIN_SYMBOLS_FILE:
1112 add_keepsyms_file (optarg);
1113 break;
1114 case 'S':
1115 link_info.strip = strip_debugger;
1116 break;
1117 case 's':
1118 link_info.strip = strip_all;
1119 break;
1120 case OPTION_STRIP_DISCARDED:
1121 link_info.strip_discarded = TRUE;
1122 break;
1123 case OPTION_NO_STRIP_DISCARDED:
1124 link_info.strip_discarded = FALSE;
1125 break;
1126 case OPTION_SHARED:
1127 if (config.has_shared)
1128 {
1129 link_info.shared = TRUE;
1130 /* When creating a shared library, the default
1131 behaviour is to ignore any unresolved references. */
1132 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1133 link_info.unresolved_syms_in_objects = RM_IGNORE;
1134 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1135 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1136 }
1137 else
1138 einfo (_("%P%F: -shared not supported\n"));
1139 break;
1140 case OPTION_PIE:
1141 if (config.has_shared)
1142 {
1143 link_info.shared = TRUE;
1144 link_info.pie = TRUE;
1145 }
1146 else
1147 einfo (_("%P%F: -pie not supported\n"));
1148 break;
1149 case 'h': /* Used on Solaris. */
1150 case OPTION_SONAME:
1151 command_line.soname = optarg;
1152 break;
1153 case OPTION_SORT_COMMON:
1154 if (optarg == NULL
1155 || strcmp (optarg, N_("descending")) == 0)
1156 config.sort_common = sort_descending;
1157 else if (strcmp (optarg, N_("ascending")) == 0)
1158 config.sort_common = sort_ascending;
1159 else
1160 einfo (_("%P%F: invalid common section sorting option: %s\n"),
1161 optarg);
1162 break;
1163 case OPTION_SORT_SECTION:
1164 if (strcmp (optarg, N_("name")) == 0)
1165 sort_section = by_name;
1166 else if (strcmp (optarg, N_("alignment")) == 0)
1167 sort_section = by_alignment;
1168 else
1169 einfo (_("%P%F: invalid section sorting option: %s\n"),
1170 optarg);
1171 break;
1172 case OPTION_STATS:
1173 config.stats = TRUE;
1174 break;
1175 case OPTION_SYMBOLIC:
1176 command_line.symbolic = symbolic;
1177 break;
1178 case OPTION_SYMBOLIC_FUNCTIONS:
1179 command_line.symbolic = symbolic_functions;
1180 break;
1181 case 't':
1182 trace_files = TRUE;
1183 break;
1184 case 'T':
1185 previous_script_handle = saved_script_handle;
1186 ldfile_open_command_file (optarg);
1187 parser_input = input_script;
1188 yyparse ();
1189 previous_script_handle = NULL;
1190 break;
1191 case OPTION_DEFAULT_SCRIPT:
1192 command_line.default_script = optarg;
1193 break;
1194 case OPTION_SECTION_START:
1195 {
1196 char *optarg2;
1197 char *sec_name;
1198 int len;
1199
1200 /* Check for <something>=<somthing>... */
1201 optarg2 = strchr (optarg, '=');
1202 if (optarg2 == NULL)
1203 einfo (_("%P%F: invalid argument to option"
1204 " \"--section-start\"\n"));
1205
1206 optarg2++;
1207
1208 /* So far so good. Are all the args present? */
1209 if ((*optarg == '\0') || (*optarg2 == '\0'))
1210 einfo (_("%P%F: missing argument(s) to option"
1211 " \"--section-start\"\n"));
1212
1213 /* We must copy the section name as set_section_start
1214 doesn't do it for us. */
1215 len = optarg2 - optarg;
1216 sec_name = xmalloc (len);
1217 memcpy (sec_name, optarg, len - 1);
1218 sec_name[len - 1] = 0;
1219
1220 /* Then set it... */
1221 set_section_start (sec_name, optarg2);
1222 }
1223 break;
1224 case OPTION_TARGET_HELP:
1225 /* Mention any target specific options. */
1226 ldemul_list_emulation_options (stdout);
1227 exit (0);
1228 case OPTION_TBSS:
1229 set_segment_start (".bss", optarg);
1230 break;
1231 case OPTION_TDATA:
1232 set_segment_start (".data", optarg);
1233 break;
1234 case OPTION_TTEXT:
1235 set_segment_start (".text", optarg);
1236 break;
1237 case OPTION_TTEXT_SEGMENT:
1238 set_segment_start (".text-segment", optarg);
1239 break;
1240 case OPTION_TRADITIONAL_FORMAT:
1241 link_info.traditional_format = TRUE;
1242 break;
1243 case OPTION_TASK_LINK:
1244 link_info.task_link = TRUE;
1245 /* Fall through - do an implied -r option. */
1246 case OPTION_UR:
1247 link_info.relocatable = TRUE;
1248 config.build_constructors = TRUE;
1249 config.magic_demand_paged = FALSE;
1250 config.text_read_only = FALSE;
1251 config.dynamic_link = FALSE;
1252 break;
1253 case 'u':
1254 ldlang_add_undef (optarg);
1255 break;
1256 case OPTION_UNIQUE:
1257 if (optarg != NULL)
1258 lang_add_unique (optarg);
1259 else
1260 config.unique_orphan_sections = TRUE;
1261 break;
1262 case OPTION_VERBOSE:
1263 ldversion (1);
1264 version_printed = TRUE;
1265 trace_file_tries = TRUE;
1266 overflow_cutoff_limit = -2;
1267 break;
1268 case 'v':
1269 ldversion (0);
1270 version_printed = TRUE;
1271 break;
1272 case 'V':
1273 ldversion (1);
1274 version_printed = TRUE;
1275 break;
1276 case OPTION_VERSION:
1277 ldversion (2);
1278 xexit (0);
1279 break;
1280 case OPTION_VERSION_SCRIPT:
1281 /* This option indicates a small script that only specifies
1282 version information. Read it, but don't assume that
1283 we've seen a linker script. */
1284 {
1285 FILE *hold_script_handle;
1286
1287 hold_script_handle = saved_script_handle;
1288 ldfile_open_command_file (optarg);
1289 saved_script_handle = hold_script_handle;
1290 parser_input = input_version_script;
1291 yyparse ();
1292 }
1293 break;
1294 case OPTION_VERSION_EXPORTS_SECTION:
1295 /* This option records a version symbol to be applied to the
1296 symbols listed for export to be found in the object files
1297 .exports sections. */
1298 command_line.version_exports_section = optarg;
1299 break;
1300 case OPTION_DYNAMIC_LIST_DATA:
1301 command_line.dynamic_list = dynamic_list_data;
1302 if (command_line.symbolic == symbolic)
1303 command_line.symbolic = symbolic_unset;
1304 break;
1305 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1306 lang_append_dynamic_list_cpp_typeinfo ();
1307 if (command_line.dynamic_list != dynamic_list_data)
1308 command_line.dynamic_list = dynamic_list;
1309 if (command_line.symbolic == symbolic)
1310 command_line.symbolic = symbolic_unset;
1311 break;
1312 case OPTION_DYNAMIC_LIST_CPP_NEW:
1313 lang_append_dynamic_list_cpp_new ();
1314 if (command_line.dynamic_list != dynamic_list_data)
1315 command_line.dynamic_list = dynamic_list;
1316 if (command_line.symbolic == symbolic)
1317 command_line.symbolic = symbolic_unset;
1318 break;
1319 case OPTION_DYNAMIC_LIST:
1320 /* This option indicates a small script that only specifies
1321 a dynamic list. Read it, but don't assume that we've
1322 seen a linker script. */
1323 {
1324 FILE *hold_script_handle;
1325
1326 hold_script_handle = saved_script_handle;
1327 ldfile_open_command_file (optarg);
1328 saved_script_handle = hold_script_handle;
1329 parser_input = input_dynamic_list;
1330 yyparse ();
1331 }
1332 if (command_line.dynamic_list != dynamic_list_data)
1333 command_line.dynamic_list = dynamic_list;
1334 if (command_line.symbolic == symbolic)
1335 command_line.symbolic = symbolic_unset;
1336 break;
1337 case OPTION_WARN_COMMON:
1338 config.warn_common = TRUE;
1339 break;
1340 case OPTION_WARN_CONSTRUCTORS:
1341 config.warn_constructors = TRUE;
1342 break;
1343 case OPTION_WARN_FATAL:
1344 config.fatal_warnings = TRUE;
1345 break;
1346 case OPTION_NO_WARN_FATAL:
1347 config.fatal_warnings = FALSE;
1348 break;
1349 case OPTION_WARN_MULTIPLE_GP:
1350 config.warn_multiple_gp = TRUE;
1351 break;
1352 case OPTION_WARN_ONCE:
1353 config.warn_once = TRUE;
1354 break;
1355 case OPTION_WARN_SECTION_ALIGN:
1356 config.warn_section_align = TRUE;
1357 break;
1358 case OPTION_WARN_SHARED_TEXTREL:
1359 link_info.warn_shared_textrel = TRUE;
1360 break;
1361 case OPTION_WHOLE_ARCHIVE:
1362 whole_archive = TRUE;
1363 break;
1364 case OPTION_ADD_NEEDED:
1365 add_needed = TRUE;
1366 break;
1367 case OPTION_NO_ADD_NEEDED:
1368 add_needed = FALSE;
1369 break;
1370 case OPTION_AS_NEEDED:
1371 as_needed = TRUE;
1372 break;
1373 case OPTION_NO_AS_NEEDED:
1374 as_needed = FALSE;
1375 break;
1376 case OPTION_WRAP:
1377 add_wrap (optarg);
1378 break;
1379 case OPTION_DISCARD_NONE:
1380 link_info.discard = discard_none;
1381 break;
1382 case 'X':
1383 link_info.discard = discard_l;
1384 break;
1385 case 'x':
1386 link_info.discard = discard_all;
1387 break;
1388 case 'Y':
1389 if (CONST_STRNEQ (optarg, "P,"))
1390 optarg += 2;
1391 if (default_dirlist != NULL)
1392 free (default_dirlist);
1393 default_dirlist = xstrdup (optarg);
1394 break;
1395 case 'y':
1396 add_ysym (optarg);
1397 break;
1398 case OPTION_SPARE_DYNAMIC_TAGS:
1399 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1400 break;
1401 case OPTION_SPLIT_BY_RELOC:
1402 if (optarg != NULL)
1403 config.split_by_reloc = strtoul (optarg, NULL, 0);
1404 else
1405 config.split_by_reloc = 32768;
1406 break;
1407 case OPTION_SPLIT_BY_FILE:
1408 if (optarg != NULL)
1409 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1410 else
1411 config.split_by_file = 1;
1412 break;
1413 case OPTION_CHECK_SECTIONS:
1414 command_line.check_section_addresses = 1;
1415 break;
1416 case OPTION_NO_CHECK_SECTIONS:
1417 command_line.check_section_addresses = 0;
1418 break;
1419 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1420 command_line.accept_unknown_input_arch = TRUE;
1421 break;
1422 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1423 command_line.accept_unknown_input_arch = FALSE;
1424 break;
1425 case '(':
1426 if (ingroup)
1427 einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1428
1429 lang_enter_group ();
1430 ingroup = 1;
1431 break;
1432 case ')':
1433 if (! ingroup)
1434 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1435
1436 lang_leave_group ();
1437 ingroup = 0;
1438 break;
1439
1440 case OPTION_INIT:
1441 link_info.init_function = optarg;
1442 break;
1443
1444 case OPTION_FINI:
1445 link_info.fini_function = optarg;
1446 break;
1447
1448 case OPTION_REDUCE_MEMORY_OVERHEADS:
1449 link_info.reduce_memory_overheads = TRUE;
1450 if (config.hash_table_size == 0)
1451 config.hash_table_size = 1021;
1452 break;
1453
1454 case OPTION_HASH_SIZE:
1455 {
1456 bfd_size_type new_size;
1457
1458 new_size = strtoul (optarg, NULL, 0);
1459 if (new_size)
1460 config.hash_table_size = new_size;
1461 else
1462 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1463 }
1464 break;
1465 }
1466 }
1467
1468 if (ingroup)
1469 lang_leave_group ();
1470
1471 if (default_dirlist != NULL)
1472 {
1473 set_default_dirlist (default_dirlist);
1474 free (default_dirlist);
1475 }
1476
1477 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1478 /* FIXME: Should we allow emulations a chance to set this ? */
1479 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1480
1481 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1482 /* FIXME: Should we allow emulations a chance to set this ? */
1483 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1484 }
1485
1486 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1487 library search path. */
1488
1489 static void
1490 set_default_dirlist (char *dirlist_ptr)
1491 {
1492 char *p;
1493
1494 while (1)
1495 {
1496 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1497 if (p != NULL)
1498 *p = '\0';
1499 if (*dirlist_ptr != '\0')
1500 ldfile_add_library_path (dirlist_ptr, TRUE);
1501 if (p == NULL)
1502 break;
1503 dirlist_ptr = p + 1;
1504 }
1505 }
1506
1507 static void
1508 set_section_start (char *sect, char *valstr)
1509 {
1510 const char *end;
1511 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1512 if (*end)
1513 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1514 lang_section_start (sect, exp_intop (val), NULL);
1515 }
1516
1517 static void
1518 set_segment_start (const char *section, char *valstr)
1519 {
1520 const char *name;
1521 const char *end;
1522 segment_type *seg;
1523
1524 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1525 if (*end)
1526 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1527 /* If we already have an entry for this segment, update the existing
1528 value. */
1529 name = section + 1;
1530 for (seg = segments; seg; seg = seg->next)
1531 if (strcmp (seg->name, name) == 0)
1532 {
1533 seg->value = val;
1534 return;
1535 }
1536 /* There was no existing value so we must create a new segment
1537 entry. */
1538 seg = stat_alloc (sizeof (*seg));
1539 seg->name = name;
1540 seg->value = val;
1541 seg->used = FALSE;
1542 /* Add it to the linked list of segments. */
1543 seg->next = segments;
1544 segments = seg;
1545 /* Historically, -Ttext and friends set the base address of a
1546 particular section. For backwards compatibility, we still do
1547 that. If a SEGMENT_START directive is seen, the section address
1548 assignment will be disabled. */
1549 lang_section_start (section, exp_intop (val), seg);
1550 }
1551
1552 \f
1553 /* Print help messages for the options. */
1554
1555 static void
1556 help (void)
1557 {
1558 unsigned i;
1559 const char **targets, **pp;
1560 int len;
1561
1562 printf (_("Usage: %s [options] file...\n"), program_name);
1563
1564 printf (_("Options:\n"));
1565 for (i = 0; i < OPTION_COUNT; i++)
1566 {
1567 if (ld_options[i].doc != NULL)
1568 {
1569 bfd_boolean comma;
1570 unsigned j;
1571
1572 printf (" ");
1573
1574 comma = FALSE;
1575 len = 2;
1576
1577 j = i;
1578 do
1579 {
1580 if (ld_options[j].shortopt != '\0'
1581 && ld_options[j].control != NO_HELP)
1582 {
1583 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1584 len += (comma ? 2 : 0) + 2;
1585 if (ld_options[j].arg != NULL)
1586 {
1587 if (ld_options[j].opt.has_arg != optional_argument)
1588 {
1589 printf (" ");
1590 ++len;
1591 }
1592 printf ("%s", _(ld_options[j].arg));
1593 len += strlen (_(ld_options[j].arg));
1594 }
1595 comma = TRUE;
1596 }
1597 ++j;
1598 }
1599 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1600
1601 j = i;
1602 do
1603 {
1604 if (ld_options[j].opt.name != NULL
1605 && ld_options[j].control != NO_HELP)
1606 {
1607 int two_dashes =
1608 (ld_options[j].control == TWO_DASHES
1609 || ld_options[j].control == EXACTLY_TWO_DASHES);
1610
1611 printf ("%s-%s%s",
1612 comma ? ", " : "",
1613 two_dashes ? "-" : "",
1614 ld_options[j].opt.name);
1615 len += ((comma ? 2 : 0)
1616 + 1
1617 + (two_dashes ? 1 : 0)
1618 + strlen (ld_options[j].opt.name));
1619 if (ld_options[j].arg != NULL)
1620 {
1621 printf (" %s", _(ld_options[j].arg));
1622 len += 1 + strlen (_(ld_options[j].arg));
1623 }
1624 comma = TRUE;
1625 }
1626 ++j;
1627 }
1628 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1629
1630 if (len >= 30)
1631 {
1632 printf ("\n");
1633 len = 0;
1634 }
1635
1636 for (; len < 30; len++)
1637 putchar (' ');
1638
1639 printf ("%s\n", _(ld_options[i].doc));
1640 }
1641 }
1642 printf (_(" @FILE"));
1643 for (len = strlen (" @FILE"); len < 30; len++)
1644 putchar (' ');
1645 printf (_("Read options from FILE\n"));
1646
1647 /* Note: Various tools (such as libtool) depend upon the
1648 format of the listings below - do not change them. */
1649 /* xgettext:c-format */
1650 printf (_("%s: supported targets:"), program_name);
1651 targets = bfd_target_list ();
1652 for (pp = targets; *pp != NULL; pp++)
1653 printf (" %s", *pp);
1654 free (targets);
1655 printf ("\n");
1656
1657 /* xgettext:c-format */
1658 printf (_("%s: supported emulations: "), program_name);
1659 ldemul_list_emulations (stdout);
1660 printf ("\n");
1661
1662 /* xgettext:c-format */
1663 printf (_("%s: emulation specific options:\n"), program_name);
1664 ldemul_list_emulation_options (stdout);
1665 printf ("\n");
1666
1667 if (REPORT_BUGS_TO[0])
1668 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1669 }
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