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* Makefile.tpl: Fix comment errors.
[binutils.git] / ld / lexsup.c
blob60a8167d5dc6d3c96afb8f63d69800d603380a93
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 };
168
169 /* The long options. This structure is used for both the option
170 parsing and the help text. */
171
172 struct ld_option
173 {
174 /* The long option information. */
175 struct option opt;
176 /* The short option with the same meaning ('\0' if none). */
177 char shortopt;
178 /* The name of the argument (NULL if none). */
179 const char *arg;
180 /* The documentation string. If this is NULL, this is a synonym for
181 the previous option. */
182 const char *doc;
183 enum {
184 /* Use one dash before long option name. */
185 ONE_DASH,
186 /* Use two dashes before long option name. */
187 TWO_DASHES,
188 /* Only accept two dashes before the long option name.
189 This is an overloading of the use of this enum, since originally it
190 was only intended to tell the --help display function how to display
191 the long option name. This feature was added in order to resolve
192 the confusion about the -omagic command line switch. Is it setting
193 the output file name to "magic" or is it setting the NMAGIC flag on
194 the output ? It has been decided that it is setting the output file
195 name, and that if you want to set the NMAGIC flag you should use -N
196 or --omagic. */
197 EXACTLY_TWO_DASHES,
198 /* Don't mention this option in --help output. */
199 NO_HELP
200 } control;
201 };
202
203 static const struct ld_option ld_options[] =
204 {
205 { {NULL, required_argument, NULL, '\0'},
206 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
207 ONE_DASH },
208 { {"architecture", required_argument, NULL, 'A'},
209 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
210 { {"format", required_argument, NULL, 'b'},
211 'b', N_("TARGET"), N_("Specify target for following input files"),
212 TWO_DASHES },
213 { {"mri-script", required_argument, NULL, 'c'},
214 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
215 { {"dc", no_argument, NULL, 'd'},
216 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
217 { {"dp", no_argument, NULL, 'd'},
218 '\0', NULL, NULL, ONE_DASH },
219 { {"entry", required_argument, NULL, 'e'},
220 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
221 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
222 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
223 { {"EB", no_argument, NULL, OPTION_EB},
224 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
225 { {"EL", no_argument, NULL, OPTION_EL},
226 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
227 { {"auxiliary", required_argument, NULL, 'f'},
228 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
229 TWO_DASHES },
230 { {"filter", required_argument, NULL, 'F'},
231 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
232 TWO_DASHES },
233 { {NULL, no_argument, NULL, '\0'},
234 'g', NULL, N_("Ignored"), ONE_DASH },
235 { {"gpsize", required_argument, NULL, 'G'},
236 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
237 TWO_DASHES },
238 { {"soname", required_argument, NULL, OPTION_SONAME},
239 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
240 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
241 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
242 TWO_DASHES },
243 { {"library", required_argument, NULL, 'l'},
244 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
245 { {"library-path", required_argument, NULL, 'L'},
246 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
247 TWO_DASHES },
248 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
249 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
250 { {NULL, required_argument, NULL, '\0'},
251 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
252 { {"print-map", no_argument, NULL, 'M'},
253 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
254 { {"nmagic", no_argument, NULL, 'n'},
255 'n', NULL, N_("Do not page align data"), TWO_DASHES },
256 { {"omagic", no_argument, NULL, 'N'},
257 'N', NULL, N_("Do not page align data, do not make text readonly"),
258 EXACTLY_TWO_DASHES },
259 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
260 '\0', NULL, N_("Page align data, make text readonly"),
261 EXACTLY_TWO_DASHES },
262 { {"output", required_argument, NULL, 'o'},
263 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
264 { {NULL, required_argument, NULL, '\0'},
265 'O', NULL, N_("Optimize output file"), ONE_DASH },
266 { {"Qy", no_argument, NULL, OPTION_IGNORE},
267 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
268 { {"emit-relocs", no_argument, NULL, 'q'},
269 'q', NULL, "Generate relocations in final output", TWO_DASHES },
270 { {"relocatable", no_argument, NULL, 'r'},
271 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
272 { {NULL, no_argument, NULL, '\0'},
273 'i', NULL, NULL, ONE_DASH },
274 { {"just-symbols", required_argument, NULL, 'R'},
275 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
276 TWO_DASHES },
277 { {"strip-all", no_argument, NULL, 's'},
278 's', NULL, N_("Strip all symbols"), TWO_DASHES },
279 { {"strip-debug", no_argument, NULL, 'S'},
280 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
281 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
282 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
283 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
284 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
285 { {"trace", no_argument, NULL, 't'},
286 't', NULL, N_("Trace file opens"), TWO_DASHES },
287 { {"script", required_argument, NULL, 'T'},
288 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
289 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
290 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
291 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
292 '\0', NULL, NULL, ONE_DASH },
293 { {"undefined", required_argument, NULL, 'u'},
294 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
295 TWO_DASHES },
296 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
297 '\0', N_("[=SECTION]"),
298 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
299 { {"Ur", no_argument, NULL, OPTION_UR},
300 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
301 { {"version", no_argument, NULL, OPTION_VERSION},
302 'v', NULL, N_("Print version information"), TWO_DASHES },
303 { {NULL, no_argument, NULL, '\0'},
304 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
305 { {"discard-all", no_argument, NULL, 'x'},
306 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
307 { {"discard-locals", no_argument, NULL, 'X'},
308 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
309 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
310 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
311 { {"trace-symbol", required_argument, NULL, 'y'},
312 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
313 { {NULL, required_argument, NULL, '\0'},
314 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
315 ONE_DASH },
316 { {"start-group", no_argument, NULL, '('},
317 '(', NULL, N_("Start a group"), TWO_DASHES },
318 { {"end-group", no_argument, NULL, ')'},
319 ')', NULL, N_("End a group"), TWO_DASHES },
320 { {"accept-unknown-input-arch", no_argument, NULL,
321 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
322 '\0', NULL,
323 N_("Accept input files whose architecture cannot be determined"),
324 TWO_DASHES },
325 { {"no-accept-unknown-input-arch", no_argument, NULL,
326 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
327 '\0', NULL, N_("Reject input files whose architecture is unknown"),
328 TWO_DASHES },
329 { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED},
330 '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n"
331 " following dynamic libs"),
332 TWO_DASHES },
333 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED},
334 '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n"
335 " in following dynamic libs"),
336 TWO_DASHES },
337 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED},
338 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
339 TWO_DASHES },
340 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED},
341 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"),
342 TWO_DASHES },
343 { {"assert", required_argument, NULL, OPTION_ASSERT},
344 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
345 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
346 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
347 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
348 '\0', NULL, NULL, ONE_DASH },
349 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
350 '\0', NULL, NULL, ONE_DASH },
351 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
352 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
353 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
354 '\0', NULL, NULL, ONE_DASH },
355 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
356 '\0', NULL, NULL, ONE_DASH },
357 { {"static", no_argument, NULL, OPTION_NON_SHARED},
358 '\0', NULL, NULL, ONE_DASH },
359 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
360 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
361 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
362 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
363 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
364 '\0', NULL, N_("Check section addresses for overlaps (default)"),
365 TWO_DASHES },
366 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
367 '\0', NULL, N_("Do not check section addresses for overlaps"),
368 TWO_DASHES },
369 { {"cref", no_argument, NULL, OPTION_CREF},
370 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
371 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
372 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
373 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
374 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
375 TWO_DASHES },
376 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
377 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
378 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
379 '\0', NULL, N_("Treat warnings as errors"),
380 TWO_DASHES },
381 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
382 '\0', NULL, N_("Do not treat warnings as errors (default)"),
383 TWO_DASHES },
384 { {"fini", required_argument, NULL, OPTION_FINI},
385 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
386 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
387 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
388 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
389 '\0', NULL, N_("Remove unused sections (on some targets)"),
390 TWO_DASHES },
391 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
392 '\0', NULL, N_("Don't remove unused sections (default)"),
393 TWO_DASHES },
394 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
395 '\0', NULL, N_("List removed unused sections on stderr"),
396 TWO_DASHES },
397 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
398 '\0', NULL, N_("Do not list removed unused sections"),
399 TWO_DASHES },
400 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
401 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
402 TWO_DASHES },
403 { {"help", no_argument, NULL, OPTION_HELP},
404 '\0', NULL, N_("Print option help"), TWO_DASHES },
405 { {"init", required_argument, NULL, OPTION_INIT},
406 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
407 { {"Map", required_argument, NULL, OPTION_MAP},
408 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
409 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
410 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
411 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
412 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
413 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
414 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
415 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
416 '\0', NULL, N_("Do not allow unresolved references in object files"),
417 TWO_DASHES },
418 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
419 '\0', NULL, N_("Allow unresolved references in shared libaries"),
420 TWO_DASHES },
421 { {"no-allow-shlib-undefined", no_argument, NULL,
422 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
423 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
424 TWO_DASHES },
425 { {"allow-multiple-definition", no_argument, NULL,
426 OPTION_ALLOW_MULTIPLE_DEFINITION},
427 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
428 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
429 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
430 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
431 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
432 { {"default-imported-symver", no_argument, NULL,
433 OPTION_DEFAULT_IMPORTED_SYMVER},
434 '\0', NULL, N_("Create default symbol version for imported symbols"),
435 TWO_DASHES },
436 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
437 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
438 { {"no-warn-search-mismatch", no_argument, NULL,
439 OPTION_NO_WARN_SEARCH_MISMATCH},
440 '\0', NULL, N_("Don't warn on finding an incompatible library"),
441 TWO_DASHES},
442 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
443 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
444 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
445 '\0', NULL, N_("Create an output file even if errors occur"),
446 TWO_DASHES },
447 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
448 '\0', NULL, NULL, NO_HELP },
449 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
450 '\0', NULL, N_("Only use library directories specified on\n"
451 " the command line"),
452 ONE_DASH },
453 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
454 '\0', N_("TARGET"), N_("Specify target of output file"),
455 EXACTLY_TWO_DASHES },
456 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
457 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
458 { {"reduce-memory-overheads", no_argument, NULL,
459 OPTION_REDUCE_MEMORY_OVERHEADS},
460 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
461 TWO_DASHES },
462 { {"relax", no_argument, NULL, OPTION_RELAX},
463 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
464 { {"retain-symbols-file", required_argument, NULL,
465 OPTION_RETAIN_SYMBOLS_FILE},
466 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
467 { {"rpath", required_argument, NULL, OPTION_RPATH},
468 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
469 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
470 '\0', N_("PATH"), N_("Set link time shared library search path"),
471 ONE_DASH },
472 { {"shared", no_argument, NULL, OPTION_SHARED},
473 '\0', NULL, N_("Create a shared library"), ONE_DASH },
474 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
475 '\0', NULL, NULL, ONE_DASH },
476 { {"pie", no_argument, NULL, OPTION_PIE},
477 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
478 { {"pic-executable", no_argument, NULL, OPTION_PIE},
479 '\0', NULL, NULL, TWO_DASHES },
480 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
481 '\0', N_("[=ascending|descending]"),
482 N_("Sort common symbols by alignment [in specified order]"),
483 TWO_DASHES },
484 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
485 '\0', NULL, NULL, NO_HELP },
486 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
487 '\0', N_("name|alignment"),
488 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
489 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
490 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
491 TWO_DASHES },
492 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
493 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
494 TWO_DASHES },
495 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
496 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
497 TWO_DASHES },
498 { {"stats", no_argument, NULL, OPTION_STATS},
499 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
500 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
501 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
502 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
503 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
504 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
505 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
506 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
507 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
508 TWO_DASHES },
509 { {"Tbss", required_argument, NULL, OPTION_TBSS},
510 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
511 { {"Tdata", required_argument, NULL, OPTION_TDATA},
512 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
513 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
514 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
515 { {"unresolved-symbols=<method>", required_argument, NULL,
516 OPTION_UNRESOLVED_SYMBOLS},
517 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
518 " ignore-all, report-all, ignore-in-object-files,\n"
519 " ignore-in-shared-libs"),
520 TWO_DASHES },
521 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
522 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
523 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
524 '\0', NULL, NULL, NO_HELP },
525 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
526 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
527 { {"version-exports-section", required_argument, NULL,
528 OPTION_VERSION_EXPORTS_SECTION },
529 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
530 " SYMBOL as the version."),
531 TWO_DASHES },
532 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
533 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
534 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
535 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
536 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
537 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
538 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
539 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
540 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
541 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
542 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
543 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
544 TWO_DASHES },
545 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
546 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
547 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
548 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
549 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
550 '\0', NULL, N_("Warn if start of section changes due to alignment"),
551 TWO_DASHES },
552 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
553 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
554 TWO_DASHES },
555 { {"warn-unresolved-symbols", no_argument, NULL,
556 OPTION_WARN_UNRESOLVED_SYMBOLS},
557 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
558 { {"error-unresolved-symbols", no_argument, NULL,
559 OPTION_ERROR_UNRESOLVED_SYMBOLS},
560 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
561 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
562 '\0', NULL, N_("Include all objects from following archives"),
563 TWO_DASHES },
564 { {"wrap", required_argument, NULL, OPTION_WRAP},
565 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
566 };
567
568 #define OPTION_COUNT ARRAY_SIZE (ld_options)
569
570 void
571 parse_args (unsigned argc, char **argv)
572 {
573 unsigned i;
574 int is, il, irl;
575 int ingroup = 0;
576 char *default_dirlist = NULL;
577 char *shortopts;
578 struct option *longopts;
579 struct option *really_longopts;
580 int last_optind;
581 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
582
583 shortopts = xmalloc (OPTION_COUNT * 3 + 2);
584 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
585 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
586
587 /* Starting the short option string with '-' is for programs that
588 expect options and other ARGV-elements in any order and that care about
589 the ordering of the two. We describe each non-option ARGV-element
590 as if it were the argument of an option with character code 1. */
591 shortopts[0] = '-';
592 is = 1;
593 il = 0;
594 irl = 0;
595 for (i = 0; i < OPTION_COUNT; i++)
596 {
597 if (ld_options[i].shortopt != '\0')
598 {
599 shortopts[is] = ld_options[i].shortopt;
600 ++is;
601 if (ld_options[i].opt.has_arg == required_argument
602 || ld_options[i].opt.has_arg == optional_argument)
603 {
604 shortopts[is] = ':';
605 ++is;
606 if (ld_options[i].opt.has_arg == optional_argument)
607 {
608 shortopts[is] = ':';
609 ++is;
610 }
611 }
612 }
613 if (ld_options[i].opt.name != NULL)
614 {
615 if (ld_options[i].control == EXACTLY_TWO_DASHES)
616 {
617 really_longopts[irl] = ld_options[i].opt;
618 ++irl;
619 }
620 else
621 {
622 longopts[il] = ld_options[i].opt;
623 ++il;
624 }
625 }
626 }
627 shortopts[is] = '\0';
628 longopts[il].name = NULL;
629 really_longopts[irl].name = NULL;
630
631 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
632
633 /* The -G option is ambiguous on different platforms. Sometimes it
634 specifies the largest data size to put into the small data
635 section. Sometimes it is equivalent to --shared. Unfortunately,
636 the first form takes an argument, while the second does not.
637
638 We need to permit the --shared form because on some platforms,
639 such as Solaris, gcc -shared will pass -G to the linker.
640
641 To permit either usage, we look through the argument list. If we
642 find -G not followed by a number, we change it into --shared.
643 This will work for most normal cases. */
644 for (i = 1; i < argc; i++)
645 if (strcmp (argv[i], "-G") == 0
646 && (i + 1 >= argc
647 || ! ISDIGIT (argv[i + 1][0])))
648 argv[i] = (char *) "--shared";
649
650 /* Because we permit long options to start with a single dash, and
651 we have a --library option, and the -l option is conventionally
652 used with an immediately following argument, we can have bad
653 results if somebody tries to use -l with a library whose name
654 happens to start with "ibrary", as in -li. We avoid problems by
655 simply turning -l into --library. This means that users will
656 have to use two dashes in order to use --library, which is OK
657 since that's how it is documented.
658
659 FIXME: It's possible that this problem can arise for other short
660 options as well, although the user does always have the recourse
661 of adding a space between the option and the argument. */
662 for (i = 1; i < argc; i++)
663 {
664 if (argv[i][0] == '-'
665 && argv[i][1] == 'l'
666 && argv[i][2] != '\0')
667 {
668 char *n;
669
670 n = xmalloc (strlen (argv[i]) + 20);
671 sprintf (n, "--library=%s", argv[i] + 2);
672 argv[i] = n;
673 }
674 }
675
676 last_optind = -1;
677 while (1)
678 {
679 int longind;
680 int optc;
681
682 /* Using last_optind lets us avoid calling ldemul_parse_args
683 multiple times on a single option, which would lead to
684 confusion in the internal static variables maintained by
685 getopt. This could otherwise happen for an argument like
686 -nx, in which the -n is parsed as a single option, and we
687 loop around to pick up the -x. */
688 if (optind != last_optind)
689 if (ldemul_parse_args (argc, argv))
690 continue;
691
692 /* getopt_long_only is like getopt_long, but '-' as well as '--'
693 can indicate a long option. */
694 opterr = 0;
695 last_optind = optind;
696 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
697 if (optc == '?')
698 {
699 optind = last_optind;
700 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
701 }
702
703 if (ldemul_handle_option (optc))
704 continue;
705
706 if (optc == -1)
707 break;
708
709 switch (optc)
710 {
711 case '?':
712 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
713 /* Fall through. */
714
715 default:
716 einfo (_("%P%F: use the --help option for usage information\n"));
717
718 case 1: /* File name. */
719 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
720 break;
721
722 case OPTION_IGNORE:
723 break;
724 case 'a':
725 /* For HP/UX compatibility. Actually -a shared should mean
726 ``use only shared libraries'' but, then, we don't
727 currently support shared libraries on HP/UX anyhow. */
728 if (strcmp (optarg, "archive") == 0)
729 config.dynamic_link = FALSE;
730 else if (strcmp (optarg, "shared") == 0
731 || strcmp (optarg, "default") == 0)
732 config.dynamic_link = TRUE;
733 else
734 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
735 break;
736 case OPTION_ASSERT:
737 /* FIXME: We just ignore these, but we should handle them. */
738 if (strcmp (optarg, "definitions") == 0)
739 ;
740 else if (strcmp (optarg, "nodefinitions") == 0)
741 ;
742 else if (strcmp (optarg, "nosymbolic") == 0)
743 ;
744 else if (strcmp (optarg, "pure-text") == 0)
745 ;
746 else
747 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
748 break;
749 case 'A':
750 ldfile_add_arch (optarg);
751 break;
752 case 'b':
753 lang_add_target (optarg);
754 break;
755 case 'c':
756 ldfile_open_command_file (optarg);
757 parser_input = input_mri_script;
758 yyparse ();
759 break;
760 case OPTION_CALL_SHARED:
761 config.dynamic_link = TRUE;
762 break;
763 case OPTION_NON_SHARED:
764 config.dynamic_link = FALSE;
765 break;
766 case OPTION_CREF:
767 command_line.cref = TRUE;
768 link_info.notice_all = TRUE;
769 break;
770 case 'd':
771 command_line.force_common_definition = TRUE;
772 break;
773 case OPTION_DEFSYM:
774 lex_string = optarg;
775 lex_redirect (optarg);
776 parser_input = input_defsym;
777 parsing_defsym = 1;
778 yyparse ();
779 parsing_defsym = 0;
780 lex_string = NULL;
781 break;
782 case OPTION_DEMANGLE:
783 demangling = TRUE;
784 if (optarg != NULL)
785 {
786 enum demangling_styles style;
787
788 style = cplus_demangle_name_to_style (optarg);
789 if (style == unknown_demangling)
790 einfo (_("%F%P: unknown demangling style `%s'"),
791 optarg);
792
793 cplus_demangle_set_style (style);
794 }
795 break;
796 case 'I': /* Used on Solaris. */
797 case OPTION_DYNAMIC_LINKER:
798 command_line.interpreter = optarg;
799 break;
800 case OPTION_SYSROOT:
801 /* Already handled in ldmain.c. */
802 break;
803 case OPTION_EB:
804 command_line.endian = ENDIAN_BIG;
805 break;
806 case OPTION_EL:
807 command_line.endian = ENDIAN_LITTLE;
808 break;
809 case OPTION_EMBEDDED_RELOCS:
810 command_line.embedded_relocs = TRUE;
811 break;
812 case OPTION_EXPORT_DYNAMIC:
813 case 'E': /* HP/UX compatibility. */
814 link_info.export_dynamic = TRUE;
815 break;
816 case 'e':
817 lang_add_entry (optarg, TRUE);
818 break;
819 case 'f':
820 if (command_line.auxiliary_filters == NULL)
821 {
822 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *));
823 command_line.auxiliary_filters[0] = optarg;
824 command_line.auxiliary_filters[1] = NULL;
825 }
826 else
827 {
828 int c;
829 char **p;
830
831 c = 0;
832 for (p = command_line.auxiliary_filters; *p != NULL; p++)
833 ++c;
834 command_line.auxiliary_filters
835 = xrealloc (command_line.auxiliary_filters,
836 (c + 2) * sizeof (char *));
837 command_line.auxiliary_filters[c] = optarg;
838 command_line.auxiliary_filters[c + 1] = NULL;
839 }
840 break;
841 case 'F':
842 command_line.filter_shlib = optarg;
843 break;
844 case OPTION_FORCE_EXE_SUFFIX:
845 command_line.force_exe_suffix = TRUE;
846 break;
847 case 'G':
848 {
849 char *end;
850 g_switch_value = strtoul (optarg, &end, 0);
851 if (*end)
852 einfo (_("%P%F: invalid number `%s'\n"), optarg);
853 }
854 break;
855 case 'g':
856 /* Ignore. */
857 break;
858 case OPTION_GC_SECTIONS:
859 link_info.gc_sections = TRUE;
860 break;
861 case OPTION_PRINT_GC_SECTIONS:
862 link_info.print_gc_sections = TRUE;
863 break;
864 case OPTION_HELP:
865 help ();
866 xexit (0);
867 break;
868 case 'L':
869 ldfile_add_library_path (optarg, TRUE);
870 break;
871 case 'l':
872 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
873 break;
874 case 'M':
875 config.map_filename = "-";
876 break;
877 case 'm':
878 /* Ignore. Was handled in a pre-parse. */
879 break;
880 case OPTION_MAP:
881 config.map_filename = optarg;
882 break;
883 case 'N':
884 config.text_read_only = FALSE;
885 config.magic_demand_paged = FALSE;
886 config.dynamic_link = FALSE;
887 break;
888 case OPTION_NO_OMAGIC:
889 config.text_read_only = TRUE;
890 config.magic_demand_paged = TRUE;
891 /* NB/ Does not set dynamic_link to TRUE.
892 Use --call-shared or -Bdynamic for this. */
893 break;
894 case 'n':
895 config.magic_demand_paged = FALSE;
896 config.dynamic_link = FALSE;
897 break;
898 case OPTION_NO_DEFINE_COMMON:
899 command_line.inhibit_common_definition = TRUE;
900 break;
901 case OPTION_NO_DEMANGLE:
902 demangling = FALSE;
903 break;
904 case OPTION_NO_GC_SECTIONS:
905 link_info.gc_sections = FALSE;
906 break;
907 case OPTION_NO_PRINT_GC_SECTIONS:
908 link_info.print_gc_sections = FALSE;
909 break;
910 case OPTION_NO_KEEP_MEMORY:
911 link_info.keep_memory = FALSE;
912 break;
913 case OPTION_NO_UNDEFINED:
914 link_info.unresolved_syms_in_objects
915 = how_to_report_unresolved_symbols;
916 break;
917 case OPTION_ALLOW_SHLIB_UNDEFINED:
918 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
919 break;
920 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
921 link_info.unresolved_syms_in_shared_libs
922 = how_to_report_unresolved_symbols;
923 break;
924 case OPTION_UNRESOLVED_SYMBOLS:
925 if (strcmp (optarg, "ignore-all") == 0)
926 {
927 link_info.unresolved_syms_in_objects = RM_IGNORE;
928 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
929 }
930 else if (strcmp (optarg, "report-all") == 0)
931 {
932 link_info.unresolved_syms_in_objects
933 = how_to_report_unresolved_symbols;
934 link_info.unresolved_syms_in_shared_libs
935 = how_to_report_unresolved_symbols;
936 }
937 else if (strcmp (optarg, "ignore-in-object-files") == 0)
938 {
939 link_info.unresolved_syms_in_objects = RM_IGNORE;
940 link_info.unresolved_syms_in_shared_libs
941 = how_to_report_unresolved_symbols;
942 }
943 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
944 {
945 link_info.unresolved_syms_in_objects
946 = how_to_report_unresolved_symbols;
947 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
948 }
949 else
950 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
951 break;
952 case OPTION_WARN_UNRESOLVED_SYMBOLS:
953 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
954 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
955 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
956 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
957 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
958 break;
959
960 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
961 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
962 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
963 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
964 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
965 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
966 break;
967 case OPTION_ALLOW_MULTIPLE_DEFINITION:
968 link_info.allow_multiple_definition = TRUE;
969 break;
970 case OPTION_NO_UNDEFINED_VERSION:
971 link_info.allow_undefined_version = FALSE;
972 break;
973 case OPTION_DEFAULT_SYMVER:
974 link_info.create_default_symver = TRUE;
975 break;
976 case OPTION_DEFAULT_IMPORTED_SYMVER:
977 link_info.default_imported_symver = TRUE;
978 break;
979 case OPTION_NO_WARN_MISMATCH:
980 command_line.warn_mismatch = FALSE;
981 break;
982 case OPTION_NO_WARN_SEARCH_MISMATCH:
983 command_line.warn_search_mismatch = FALSE;
984 break;
985 case OPTION_NOINHIBIT_EXEC:
986 force_make_executable = TRUE;
987 break;
988 case OPTION_NOSTDLIB:
989 config.only_cmd_line_lib_dirs = TRUE;
990 break;
991 case OPTION_NO_WHOLE_ARCHIVE:
992 whole_archive = FALSE;
993 break;
994 case 'O':
995 /* FIXME "-O<non-digits> <value>" used to set the address of
996 section <non-digits>. Was this for compatibility with
997 something, or can we create a new option to do that
998 (with a syntax similar to -defsym)?
999 getopt can't handle two args to an option without kludges. */
1000
1001 /* Enable optimizations of output files. */
1002 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1003 break;
1004 case 'o':
1005 lang_add_output (optarg, 0);
1006 break;
1007 case OPTION_OFORMAT:
1008 lang_add_output_format (optarg, NULL, NULL, 0);
1009 break;
1010 case 'q':
1011 link_info.emitrelocations = TRUE;
1012 break;
1013 case 'i':
1014 case 'r':
1015 if (optind == last_optind)
1016 /* This can happen if the user put "-rpath,a" on the command
1017 line. (Or something similar. The comma is important).
1018 Getopt becomes confused and thinks that this is a -r option
1019 but it cannot parse the text after the -r so it refuses to
1020 increment the optind counter. Detect this case and issue
1021 an error message here. We cannot just make this a warning,
1022 increment optind, and continue because getopt is too confused
1023 and will seg-fault the next time around. */
1024 einfo(_("%P%F: bad -rpath option\n"));
1025
1026 link_info.relocatable = TRUE;
1027 config.build_constructors = FALSE;
1028 config.magic_demand_paged = FALSE;
1029 config.text_read_only = FALSE;
1030 config.dynamic_link = FALSE;
1031 break;
1032 case 'R':
1033 /* The GNU linker traditionally uses -R to mean to include
1034 only the symbols from a file. The Solaris linker uses -R
1035 to set the path used by the runtime linker to find
1036 libraries. This is the GNU linker -rpath argument. We
1037 try to support both simultaneously by checking the file
1038 named. If it is a directory, rather than a regular file,
1039 we assume -rpath was meant. */
1040 {
1041 struct stat s;
1042
1043 if (stat (optarg, &s) >= 0
1044 && ! S_ISDIR (s.st_mode))
1045 {
1046 lang_add_input_file (optarg,
1047 lang_input_file_is_symbols_only_enum,
1048 NULL);
1049 break;
1050 }
1051 }
1052 /* Fall through. */
1053 case OPTION_RPATH:
1054 if (command_line.rpath == NULL)
1055 command_line.rpath = xstrdup (optarg);
1056 else
1057 {
1058 size_t rpath_len = strlen (command_line.rpath);
1059 size_t optarg_len = strlen (optarg);
1060 char *buf;
1061 char *cp = command_line.rpath;
1062
1063 /* First see whether OPTARG is already in the path. */
1064 do
1065 {
1066 if (strncmp (optarg, cp, optarg_len) == 0
1067 && (cp[optarg_len] == 0
1068 || cp[optarg_len] == config.rpath_separator))
1069 /* We found it. */
1070 break;
1071
1072 /* Not yet found. */
1073 cp = strchr (cp, config.rpath_separator);
1074 if (cp != NULL)
1075 ++cp;
1076 }
1077 while (cp != NULL);
1078
1079 if (cp == NULL)
1080 {
1081 buf = xmalloc (rpath_len + optarg_len + 2);
1082 sprintf (buf, "%s%c%s", command_line.rpath,
1083 config.rpath_separator, optarg);
1084 free (command_line.rpath);
1085 command_line.rpath = buf;
1086 }
1087 }
1088 break;
1089 case OPTION_RPATH_LINK:
1090 if (command_line.rpath_link == NULL)
1091 command_line.rpath_link = xstrdup (optarg);
1092 else
1093 {
1094 char *buf;
1095
1096 buf = xmalloc (strlen (command_line.rpath_link)
1097 + strlen (optarg)
1098 + 2);
1099 sprintf (buf, "%s%c%s", command_line.rpath_link,
1100 config.rpath_separator, optarg);
1101 free (command_line.rpath_link);
1102 command_line.rpath_link = buf;
1103 }
1104 break;
1105 case OPTION_RELAX:
1106 command_line.relax = TRUE;
1107 break;
1108 case OPTION_RETAIN_SYMBOLS_FILE:
1109 add_keepsyms_file (optarg);
1110 break;
1111 case 'S':
1112 link_info.strip = strip_debugger;
1113 break;
1114 case 's':
1115 link_info.strip = strip_all;
1116 break;
1117 case OPTION_STRIP_DISCARDED:
1118 link_info.strip_discarded = TRUE;
1119 break;
1120 case OPTION_NO_STRIP_DISCARDED:
1121 link_info.strip_discarded = FALSE;
1122 break;
1123 case OPTION_SHARED:
1124 if (config.has_shared)
1125 {
1126 link_info.shared = TRUE;
1127 /* When creating a shared library, the default
1128 behaviour is to ignore any unresolved references. */
1129 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1130 link_info.unresolved_syms_in_objects = RM_IGNORE;
1131 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1132 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1133 }
1134 else
1135 einfo (_("%P%F: -shared not supported\n"));
1136 break;
1137 case OPTION_PIE:
1138 if (config.has_shared)
1139 {
1140 link_info.shared = TRUE;
1141 link_info.pie = TRUE;
1142 }
1143 else
1144 einfo (_("%P%F: -pie not supported\n"));
1145 break;
1146 case 'h': /* Used on Solaris. */
1147 case OPTION_SONAME:
1148 command_line.soname = optarg;
1149 break;
1150 case OPTION_SORT_COMMON:
1151 if (optarg == NULL
1152 || strcmp (optarg, N_("descending")) == 0)
1153 config.sort_common = sort_descending;
1154 else if (strcmp (optarg, N_("ascending")) == 0)
1155 config.sort_common = sort_ascending;
1156 else
1157 einfo (_("%P%F: invalid common section sorting option: %s\n"),
1158 optarg);
1159 break;
1160 case OPTION_SORT_SECTION:
1161 if (strcmp (optarg, N_("name")) == 0)
1162 sort_section = by_name;
1163 else if (strcmp (optarg, N_("alignment")) == 0)
1164 sort_section = by_alignment;
1165 else
1166 einfo (_("%P%F: invalid section sorting option: %s\n"),
1167 optarg);
1168 break;
1169 case OPTION_STATS:
1170 config.stats = TRUE;
1171 break;
1172 case OPTION_SYMBOLIC:
1173 command_line.symbolic = symbolic;
1174 break;
1175 case OPTION_SYMBOLIC_FUNCTIONS:
1176 command_line.symbolic = symbolic_functions;
1177 break;
1178 case 't':
1179 trace_files = TRUE;
1180 break;
1181 case 'T':
1182 previous_script_handle = saved_script_handle;
1183 ldfile_open_command_file (optarg);
1184 parser_input = input_script;
1185 yyparse ();
1186 previous_script_handle = NULL;
1187 break;
1188 case OPTION_DEFAULT_SCRIPT:
1189 command_line.default_script = optarg;
1190 break;
1191 case OPTION_SECTION_START:
1192 {
1193 char *optarg2;
1194 char *sec_name;
1195 int len;
1196
1197 /* Check for <something>=<somthing>... */
1198 optarg2 = strchr (optarg, '=');
1199 if (optarg2 == NULL)
1200 einfo (_("%P%F: invalid argument to option"
1201 " \"--section-start\"\n"));
1202
1203 optarg2++;
1204
1205 /* So far so good. Are all the args present? */
1206 if ((*optarg == '\0') || (*optarg2 == '\0'))
1207 einfo (_("%P%F: missing argument(s) to option"
1208 " \"--section-start\"\n"));
1209
1210 /* We must copy the section name as set_section_start
1211 doesn't do it for us. */
1212 len = optarg2 - optarg;
1213 sec_name = xmalloc (len);
1214 memcpy (sec_name, optarg, len - 1);
1215 sec_name[len - 1] = 0;
1216
1217 /* Then set it... */
1218 set_section_start (sec_name, optarg2);
1219 }
1220 break;
1221 case OPTION_TARGET_HELP:
1222 /* Mention any target specific options. */
1223 ldemul_list_emulation_options (stdout);
1224 exit (0);
1225 case OPTION_TBSS:
1226 set_segment_start (".bss", optarg);
1227 break;
1228 case OPTION_TDATA:
1229 set_segment_start (".data", optarg);
1230 break;
1231 case OPTION_TTEXT:
1232 set_segment_start (".text", optarg);
1233 break;
1234 case OPTION_TRADITIONAL_FORMAT:
1235 link_info.traditional_format = TRUE;
1236 break;
1237 case OPTION_TASK_LINK:
1238 link_info.task_link = TRUE;
1239 /* Fall through - do an implied -r option. */
1240 case OPTION_UR:
1241 link_info.relocatable = TRUE;
1242 config.build_constructors = TRUE;
1243 config.magic_demand_paged = FALSE;
1244 config.text_read_only = FALSE;
1245 config.dynamic_link = FALSE;
1246 break;
1247 case 'u':
1248 ldlang_add_undef (optarg);
1249 break;
1250 case OPTION_UNIQUE:
1251 if (optarg != NULL)
1252 lang_add_unique (optarg);
1253 else
1254 config.unique_orphan_sections = TRUE;
1255 break;
1256 case OPTION_VERBOSE:
1257 ldversion (1);
1258 version_printed = TRUE;
1259 trace_file_tries = TRUE;
1260 overflow_cutoff_limit = -2;
1261 break;
1262 case 'v':
1263 ldversion (0);
1264 version_printed = TRUE;
1265 break;
1266 case 'V':
1267 ldversion (1);
1268 version_printed = TRUE;
1269 break;
1270 case OPTION_VERSION:
1271 ldversion (2);
1272 xexit (0);
1273 break;
1274 case OPTION_VERSION_SCRIPT:
1275 /* This option indicates a small script that only specifies
1276 version information. Read it, but don't assume that
1277 we've seen a linker script. */
1278 {
1279 FILE *hold_script_handle;
1280
1281 hold_script_handle = saved_script_handle;
1282 ldfile_open_command_file (optarg);
1283 saved_script_handle = hold_script_handle;
1284 parser_input = input_version_script;
1285 yyparse ();
1286 }
1287 break;
1288 case OPTION_VERSION_EXPORTS_SECTION:
1289 /* This option records a version symbol to be applied to the
1290 symbols listed for export to be found in the object files
1291 .exports sections. */
1292 command_line.version_exports_section = optarg;
1293 break;
1294 case OPTION_DYNAMIC_LIST_DATA:
1295 command_line.dynamic_list = dynamic_list_data;
1296 if (command_line.symbolic == symbolic)
1297 command_line.symbolic = symbolic_unset;
1298 break;
1299 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1300 lang_append_dynamic_list_cpp_typeinfo ();
1301 if (command_line.dynamic_list != dynamic_list_data)
1302 command_line.dynamic_list = dynamic_list;
1303 if (command_line.symbolic == symbolic)
1304 command_line.symbolic = symbolic_unset;
1305 break;
1306 case OPTION_DYNAMIC_LIST_CPP_NEW:
1307 lang_append_dynamic_list_cpp_new ();
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:
1314 /* This option indicates a small script that only specifies
1315 a dynamic list. Read it, but don't assume that we've
1316 seen a linker script. */
1317 {
1318 FILE *hold_script_handle;
1319
1320 hold_script_handle = saved_script_handle;
1321 ldfile_open_command_file (optarg);
1322 saved_script_handle = hold_script_handle;
1323 parser_input = input_dynamic_list;
1324 yyparse ();
1325 }
1326 if (command_line.dynamic_list != dynamic_list_data)
1327 command_line.dynamic_list = dynamic_list;
1328 if (command_line.symbolic == symbolic)
1329 command_line.symbolic = symbolic_unset;
1330 break;
1331 case OPTION_WARN_COMMON:
1332 config.warn_common = TRUE;
1333 break;
1334 case OPTION_WARN_CONSTRUCTORS:
1335 config.warn_constructors = TRUE;
1336 break;
1337 case OPTION_WARN_FATAL:
1338 config.fatal_warnings = TRUE;
1339 break;
1340 case OPTION_NO_WARN_FATAL:
1341 config.fatal_warnings = FALSE;
1342 break;
1343 case OPTION_WARN_MULTIPLE_GP:
1344 config.warn_multiple_gp = TRUE;
1345 break;
1346 case OPTION_WARN_ONCE:
1347 config.warn_once = TRUE;
1348 break;
1349 case OPTION_WARN_SECTION_ALIGN:
1350 config.warn_section_align = TRUE;
1351 break;
1352 case OPTION_WARN_SHARED_TEXTREL:
1353 link_info.warn_shared_textrel = TRUE;
1354 break;
1355 case OPTION_WHOLE_ARCHIVE:
1356 whole_archive = TRUE;
1357 break;
1358 case OPTION_ADD_NEEDED:
1359 add_needed = TRUE;
1360 break;
1361 case OPTION_NO_ADD_NEEDED:
1362 add_needed = FALSE;
1363 break;
1364 case OPTION_AS_NEEDED:
1365 as_needed = TRUE;
1366 break;
1367 case OPTION_NO_AS_NEEDED:
1368 as_needed = FALSE;
1369 break;
1370 case OPTION_WRAP:
1371 add_wrap (optarg);
1372 break;
1373 case OPTION_DISCARD_NONE:
1374 link_info.discard = discard_none;
1375 break;
1376 case 'X':
1377 link_info.discard = discard_l;
1378 break;
1379 case 'x':
1380 link_info.discard = discard_all;
1381 break;
1382 case 'Y':
1383 if (CONST_STRNEQ (optarg, "P,"))
1384 optarg += 2;
1385 if (default_dirlist != NULL)
1386 free (default_dirlist);
1387 default_dirlist = xstrdup (optarg);
1388 break;
1389 case 'y':
1390 add_ysym (optarg);
1391 break;
1392 case OPTION_SPARE_DYNAMIC_TAGS:
1393 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1394 break;
1395 case OPTION_SPLIT_BY_RELOC:
1396 if (optarg != NULL)
1397 config.split_by_reloc = strtoul (optarg, NULL, 0);
1398 else
1399 config.split_by_reloc = 32768;
1400 break;
1401 case OPTION_SPLIT_BY_FILE:
1402 if (optarg != NULL)
1403 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1404 else
1405 config.split_by_file = 1;
1406 break;
1407 case OPTION_CHECK_SECTIONS:
1408 command_line.check_section_addresses = TRUE;
1409 break;
1410 case OPTION_NO_CHECK_SECTIONS:
1411 command_line.check_section_addresses = FALSE;
1412 break;
1413 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1414 command_line.accept_unknown_input_arch = TRUE;
1415 break;
1416 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1417 command_line.accept_unknown_input_arch = FALSE;
1418 break;
1419 case '(':
1420 if (ingroup)
1421 einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1422
1423 lang_enter_group ();
1424 ingroup = 1;
1425 break;
1426 case ')':
1427 if (! ingroup)
1428 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1429
1430 lang_leave_group ();
1431 ingroup = 0;
1432 break;
1433
1434 case OPTION_INIT:
1435 link_info.init_function = optarg;
1436 break;
1437
1438 case OPTION_FINI:
1439 link_info.fini_function = optarg;
1440 break;
1441
1442 case OPTION_REDUCE_MEMORY_OVERHEADS:
1443 link_info.reduce_memory_overheads = TRUE;
1444 if (config.hash_table_size == 0)
1445 config.hash_table_size = 1021;
1446 break;
1447
1448 case OPTION_HASH_SIZE:
1449 {
1450 bfd_size_type new_size;
1451
1452 new_size = strtoul (optarg, NULL, 0);
1453 if (new_size)
1454 config.hash_table_size = new_size;
1455 else
1456 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1457 }
1458 break;
1459 }
1460 }
1461
1462 if (ingroup)
1463 lang_leave_group ();
1464
1465 if (default_dirlist != NULL)
1466 {
1467 set_default_dirlist (default_dirlist);
1468 free (default_dirlist);
1469 }
1470
1471 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1472 /* FIXME: Should we allow emulations a chance to set this ? */
1473 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1474
1475 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1476 /* FIXME: Should we allow emulations a chance to set this ? */
1477 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1478 }
1479
1480 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1481 library search path. */
1482
1483 static void
1484 set_default_dirlist (char *dirlist_ptr)
1485 {
1486 char *p;
1487
1488 while (1)
1489 {
1490 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1491 if (p != NULL)
1492 *p = '\0';
1493 if (*dirlist_ptr != '\0')
1494 ldfile_add_library_path (dirlist_ptr, TRUE);
1495 if (p == NULL)
1496 break;
1497 dirlist_ptr = p + 1;
1498 }
1499 }
1500
1501 static void
1502 set_section_start (char *sect, char *valstr)
1503 {
1504 const char *end;
1505 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1506 if (*end)
1507 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1508 lang_section_start (sect, exp_intop (val), NULL);
1509 }
1510
1511 static void
1512 set_segment_start (const char *section, char *valstr)
1513 {
1514 const char *name;
1515 const char *end;
1516 segment_type *seg;
1517
1518 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1519 if (*end)
1520 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1521 /* If we already have an entry for this segment, update the existing
1522 value. */
1523 name = section + 1;
1524 for (seg = segments; seg; seg = seg->next)
1525 if (strcmp (seg->name, name) == 0)
1526 {
1527 seg->value = val;
1528 return;
1529 }
1530 /* There was no existing value so we must create a new segment
1531 entry. */
1532 seg = stat_alloc (sizeof (*seg));
1533 seg->name = name;
1534 seg->value = val;
1535 seg->used = FALSE;
1536 /* Add it to the linked list of segments. */
1537 seg->next = segments;
1538 segments = seg;
1539 /* Historically, -Ttext and friends set the base address of a
1540 particular section. For backwards compatibility, we still do
1541 that. If a SEGMENT_START directive is seen, the section address
1542 assignment will be disabled. */
1543 lang_section_start (section, exp_intop (val), seg);
1544 }
1545
1546 \f
1547 /* Print help messages for the options. */
1548
1549 static void
1550 help (void)
1551 {
1552 unsigned i;
1553 const char **targets, **pp;
1554 int len;
1555
1556 printf (_("Usage: %s [options] file...\n"), program_name);
1557
1558 printf (_("Options:\n"));
1559 for (i = 0; i < OPTION_COUNT; i++)
1560 {
1561 if (ld_options[i].doc != NULL)
1562 {
1563 bfd_boolean comma;
1564 unsigned j;
1565
1566 printf (" ");
1567
1568 comma = FALSE;
1569 len = 2;
1570
1571 j = i;
1572 do
1573 {
1574 if (ld_options[j].shortopt != '\0'
1575 && ld_options[j].control != NO_HELP)
1576 {
1577 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1578 len += (comma ? 2 : 0) + 2;
1579 if (ld_options[j].arg != NULL)
1580 {
1581 if (ld_options[j].opt.has_arg != optional_argument)
1582 {
1583 printf (" ");
1584 ++len;
1585 }
1586 printf ("%s", _(ld_options[j].arg));
1587 len += strlen (_(ld_options[j].arg));
1588 }
1589 comma = TRUE;
1590 }
1591 ++j;
1592 }
1593 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1594
1595 j = i;
1596 do
1597 {
1598 if (ld_options[j].opt.name != NULL
1599 && ld_options[j].control != NO_HELP)
1600 {
1601 int two_dashes =
1602 (ld_options[j].control == TWO_DASHES
1603 || ld_options[j].control == EXACTLY_TWO_DASHES);
1604
1605 printf ("%s-%s%s",
1606 comma ? ", " : "",
1607 two_dashes ? "-" : "",
1608 ld_options[j].opt.name);
1609 len += ((comma ? 2 : 0)
1610 + 1
1611 + (two_dashes ? 1 : 0)
1612 + strlen (ld_options[j].opt.name));
1613 if (ld_options[j].arg != NULL)
1614 {
1615 printf (" %s", _(ld_options[j].arg));
1616 len += 1 + strlen (_(ld_options[j].arg));
1617 }
1618 comma = TRUE;
1619 }
1620 ++j;
1621 }
1622 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1623
1624 if (len >= 30)
1625 {
1626 printf ("\n");
1627 len = 0;
1628 }
1629
1630 for (; len < 30; len++)
1631 putchar (' ');
1632
1633 printf ("%s\n", _(ld_options[i].doc));
1634 }
1635 }
1636 printf (_(" @FILE"));
1637 for (len = strlen (" @FILE"); len < 30; len++)
1638 putchar (' ');
1639 printf (_("Read options from FILE\n"));
1640
1641 /* Note: Various tools (such as libtool) depend upon the
1642 format of the listings below - do not change them. */
1643 /* xgettext:c-format */
1644 printf (_("%s: supported targets:"), program_name);
1645 targets = bfd_target_list ();
1646 for (pp = targets; *pp != NULL; pp++)
1647 printf (" %s", *pp);
1648 free (targets);
1649 printf ("\n");
1650
1651 /* xgettext:c-format */
1652 printf (_("%s: supported emulations: "), program_name);
1653 ldemul_list_emulations (stdout);
1654 printf ("\n");
1655
1656 /* xgettext:c-format */
1657 printf (_("%s: emulation specific options:\n"), program_name);
1658 ldemul_list_emulation_options (stdout);
1659 printf ("\n");
1660
1661 if (REPORT_BUGS_TO[0])
1662 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1663 }
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