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[binutils/dougsmingw.git] / ld / lexsup.c
blob47c72dba6a21bb70f3e773256765874cfc3588e1
1 /* Parse options for the GNU linker.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
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_NO_EXPORT_DYNAMIC,
81 OPTION_HELP,
82 OPTION_IGNORE,
83 OPTION_MAP,
84 OPTION_NO_DEMANGLE,
85 OPTION_NO_KEEP_MEMORY,
86 OPTION_NO_WARN_MISMATCH,
87 OPTION_NO_WARN_SEARCH_MISMATCH,
88 OPTION_NOINHIBIT_EXEC,
89 OPTION_NON_SHARED,
90 OPTION_NO_WHOLE_ARCHIVE,
91 OPTION_OFORMAT,
92 OPTION_RELAX,
93 OPTION_RETAIN_SYMBOLS_FILE,
94 OPTION_RPATH,
95 OPTION_RPATH_LINK,
96 OPTION_SHARED,
97 OPTION_SONAME,
98 OPTION_SORT_COMMON,
99 OPTION_SORT_SECTION,
100 OPTION_STATS,
101 OPTION_SYMBOLIC,
102 OPTION_SYMBOLIC_FUNCTIONS,
103 OPTION_TASK_LINK,
104 OPTION_TBSS,
105 OPTION_TDATA,
106 OPTION_TTEXT,
107 OPTION_TTEXT_SEGMENT,
108 OPTION_TRADITIONAL_FORMAT,
109 OPTION_UR,
110 OPTION_VERBOSE,
111 OPTION_VERSION,
112 OPTION_VERSION_SCRIPT,
113 OPTION_VERSION_EXPORTS_SECTION,
114 OPTION_DYNAMIC_LIST,
115 OPTION_DYNAMIC_LIST_CPP_NEW,
116 OPTION_DYNAMIC_LIST_CPP_TYPEINFO,
117 OPTION_DYNAMIC_LIST_DATA,
118 OPTION_WARN_COMMON,
119 OPTION_WARN_CONSTRUCTORS,
120 OPTION_WARN_FATAL,
121 OPTION_NO_WARN_FATAL,
122 OPTION_WARN_MULTIPLE_GP,
123 OPTION_WARN_ONCE,
124 OPTION_WARN_SECTION_ALIGN,
125 OPTION_SPLIT_BY_RELOC,
126 OPTION_SPLIT_BY_FILE ,
127 OPTION_WHOLE_ARCHIVE,
128 OPTION_ADD_NEEDED,
129 OPTION_NO_ADD_NEEDED,
130 OPTION_AS_NEEDED,
131 OPTION_NO_AS_NEEDED,
132 OPTION_WRAP,
133 OPTION_FORCE_EXE_SUFFIX,
134 OPTION_GC_SECTIONS,
135 OPTION_NO_GC_SECTIONS,
136 OPTION_PRINT_GC_SECTIONS,
137 OPTION_NO_PRINT_GC_SECTIONS,
138 OPTION_HASH_SIZE,
139 OPTION_CHECK_SECTIONS,
140 OPTION_NO_CHECK_SECTIONS,
141 OPTION_NO_UNDEFINED,
142 OPTION_INIT,
143 OPTION_FINI,
144 OPTION_SECTION_START,
145 OPTION_UNIQUE,
146 OPTION_TARGET_HELP,
147 OPTION_ALLOW_SHLIB_UNDEFINED,
148 OPTION_NO_ALLOW_SHLIB_UNDEFINED,
149 OPTION_ALLOW_MULTIPLE_DEFINITION,
150 OPTION_NO_UNDEFINED_VERSION,
151 OPTION_DEFAULT_SYMVER,
152 OPTION_DEFAULT_IMPORTED_SYMVER,
153 OPTION_DISCARD_NONE,
154 OPTION_SPARE_DYNAMIC_TAGS,
155 OPTION_NO_DEFINE_COMMON,
156 OPTION_NOSTDLIB,
157 OPTION_NO_OMAGIC,
158 OPTION_STRIP_DISCARDED,
159 OPTION_NO_STRIP_DISCARDED,
160 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
161 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
162 OPTION_PIE,
163 OPTION_UNRESOLVED_SYMBOLS,
164 OPTION_WARN_UNRESOLVED_SYMBOLS,
165 OPTION_ERROR_UNRESOLVED_SYMBOLS,
166 OPTION_WARN_SHARED_TEXTREL,
167 OPTION_WARN_ALTERNATE_EM,
168 OPTION_REDUCE_MEMORY_OVERHEADS,
169 OPTION_DEFAULT_SCRIPT
170 };
171
172 /* The long options. This structure is used for both the option
173 parsing and the help text. */
174
175 enum control_enum {
176 /* Use one dash before long option name. */
177 ONE_DASH,
178 /* Use two dashes before long option name. */
179 TWO_DASHES,
180 /* Only accept two dashes before the long option name.
181 This is an overloading of the use of this enum, since originally it
182 was only intended to tell the --help display function how to display
183 the long option name. This feature was added in order to resolve
184 the confusion about the -omagic command line switch. Is it setting
185 the output file name to "magic" or is it setting the NMAGIC flag on
186 the output ? It has been decided that it is setting the output file
187 name, and that if you want to set the NMAGIC flag you should use -N
188 or --omagic. */
189 EXACTLY_TWO_DASHES,
190 /* Don't mention this option in --help output. */
191 NO_HELP
192 };
193
194 struct ld_option
195 {
196 /* The long option information. */
197 struct option opt;
198 /* The short option with the same meaning ('\0' if none). */
199 char shortopt;
200 /* The name of the argument (NULL if none). */
201 const char *arg;
202 /* The documentation string. If this is NULL, this is a synonym for
203 the previous option. */
204 const char *doc;
205 enum control_enum control;
206 };
207
208 static const struct ld_option ld_options[] =
209 {
210 { {NULL, required_argument, NULL, '\0'},
211 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
212 ONE_DASH },
213 { {"architecture", required_argument, NULL, 'A'},
214 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
215 { {"format", required_argument, NULL, 'b'},
216 'b', N_("TARGET"), N_("Specify target for following input files"),
217 TWO_DASHES },
218 { {"mri-script", required_argument, NULL, 'c'},
219 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
220 { {"dc", no_argument, NULL, 'd'},
221 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
222 { {"dp", no_argument, NULL, 'd'},
223 '\0', NULL, NULL, ONE_DASH },
224 { {"entry", required_argument, NULL, 'e'},
225 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
226 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
227 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
228 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
229 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
230 { {"EB", no_argument, NULL, OPTION_EB},
231 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
232 { {"EL", no_argument, NULL, OPTION_EL},
233 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
234 { {"auxiliary", required_argument, NULL, 'f'},
235 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
236 TWO_DASHES },
237 { {"filter", required_argument, NULL, 'F'},
238 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
239 TWO_DASHES },
240 { {NULL, no_argument, NULL, '\0'},
241 'g', NULL, N_("Ignored"), ONE_DASH },
242 { {"gpsize", required_argument, NULL, 'G'},
243 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
244 TWO_DASHES },
245 { {"soname", required_argument, NULL, OPTION_SONAME},
246 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
247 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
248 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
249 TWO_DASHES },
250 { {"library", required_argument, NULL, 'l'},
251 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
252 { {"library-path", required_argument, NULL, 'L'},
253 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
254 TWO_DASHES },
255 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
256 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
257 { {NULL, required_argument, NULL, '\0'},
258 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
259 { {"print-map", no_argument, NULL, 'M'},
260 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
261 { {"nmagic", no_argument, NULL, 'n'},
262 'n', NULL, N_("Do not page align data"), TWO_DASHES },
263 { {"omagic", no_argument, NULL, 'N'},
264 'N', NULL, N_("Do not page align data, do not make text readonly"),
265 EXACTLY_TWO_DASHES },
266 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
267 '\0', NULL, N_("Page align data, make text readonly"),
268 EXACTLY_TWO_DASHES },
269 { {"output", required_argument, NULL, 'o'},
270 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
271 { {NULL, required_argument, NULL, '\0'},
272 'O', NULL, N_("Optimize output file"), ONE_DASH },
273 { {"Qy", no_argument, NULL, OPTION_IGNORE},
274 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
275 { {"emit-relocs", no_argument, NULL, 'q'},
276 'q', NULL, "Generate relocations in final output", TWO_DASHES },
277 { {"relocatable", no_argument, NULL, 'r'},
278 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
279 { {NULL, no_argument, NULL, '\0'},
280 'i', NULL, NULL, ONE_DASH },
281 { {"just-symbols", required_argument, NULL, 'R'},
282 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
283 TWO_DASHES },
284 { {"strip-all", no_argument, NULL, 's'},
285 's', NULL, N_("Strip all symbols"), TWO_DASHES },
286 { {"strip-debug", no_argument, NULL, 'S'},
287 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
288 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
289 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
290 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
291 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
292 { {"trace", no_argument, NULL, 't'},
293 't', NULL, N_("Trace file opens"), TWO_DASHES },
294 { {"script", required_argument, NULL, 'T'},
295 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
296 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
297 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
298 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
299 '\0', NULL, NULL, ONE_DASH },
300 { {"undefined", required_argument, NULL, 'u'},
301 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
302 TWO_DASHES },
303 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
304 '\0', N_("[=SECTION]"),
305 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
306 { {"Ur", no_argument, NULL, OPTION_UR},
307 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
308 { {"version", no_argument, NULL, OPTION_VERSION},
309 'v', NULL, N_("Print version information"), TWO_DASHES },
310 { {NULL, no_argument, NULL, '\0'},
311 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
312 { {"discard-all", no_argument, NULL, 'x'},
313 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
314 { {"discard-locals", no_argument, NULL, 'X'},
315 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
316 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
317 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
318 { {"trace-symbol", required_argument, NULL, 'y'},
319 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
320 { {NULL, required_argument, NULL, '\0'},
321 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
322 ONE_DASH },
323 { {"start-group", no_argument, NULL, '('},
324 '(', NULL, N_("Start a group"), TWO_DASHES },
325 { {"end-group", no_argument, NULL, ')'},
326 ')', NULL, N_("End a group"), TWO_DASHES },
327 { {"accept-unknown-input-arch", no_argument, NULL,
328 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
329 '\0', NULL,
330 N_("Accept input files whose architecture cannot be determined"),
331 TWO_DASHES },
332 { {"no-accept-unknown-input-arch", no_argument, NULL,
333 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
334 '\0', NULL, N_("Reject input files whose architecture is unknown"),
335 TWO_DASHES },
336 { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED},
337 '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n"
338 " following dynamic libs"),
339 TWO_DASHES },
340 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED},
341 '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n"
342 " in following dynamic libs"),
343 TWO_DASHES },
344 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED},
345 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
346 TWO_DASHES },
347 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED},
348 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"),
349 TWO_DASHES },
350 { {"assert", required_argument, NULL, OPTION_ASSERT},
351 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
352 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
353 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
354 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
355 '\0', NULL, NULL, ONE_DASH },
356 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
357 '\0', NULL, NULL, ONE_DASH },
358 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
359 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
360 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
361 '\0', NULL, NULL, ONE_DASH },
362 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
363 '\0', NULL, NULL, ONE_DASH },
364 { {"static", no_argument, NULL, OPTION_NON_SHARED},
365 '\0', NULL, NULL, ONE_DASH },
366 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
367 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
368 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
369 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
370 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
371 '\0', NULL, N_("Check section addresses for overlaps (default)"),
372 TWO_DASHES },
373 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
374 '\0', NULL, N_("Do not check section addresses for overlaps"),
375 TWO_DASHES },
376 { {"cref", no_argument, NULL, OPTION_CREF},
377 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
378 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
379 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
380 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
381 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
382 TWO_DASHES },
383 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
384 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
385 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
386 '\0', NULL, N_("Treat warnings as errors"),
387 TWO_DASHES },
388 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
389 '\0', NULL, N_("Do not treat warnings as errors (default)"),
390 TWO_DASHES },
391 { {"fini", required_argument, NULL, OPTION_FINI},
392 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
393 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
394 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
395 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
396 '\0', NULL, N_("Remove unused sections (on some targets)"),
397 TWO_DASHES },
398 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
399 '\0', NULL, N_("Don't remove unused sections (default)"),
400 TWO_DASHES },
401 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
402 '\0', NULL, N_("List removed unused sections on stderr"),
403 TWO_DASHES },
404 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
405 '\0', NULL, N_("Do not list removed unused sections"),
406 TWO_DASHES },
407 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
408 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
409 TWO_DASHES },
410 { {"help", no_argument, NULL, OPTION_HELP},
411 '\0', NULL, N_("Print option help"), TWO_DASHES },
412 { {"init", required_argument, NULL, OPTION_INIT},
413 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
414 { {"Map", required_argument, NULL, OPTION_MAP},
415 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
416 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
417 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
418 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
419 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
420 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
421 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
422 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
423 '\0', NULL, N_("Do not allow unresolved references in object files"),
424 TWO_DASHES },
425 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
426 '\0', NULL, N_("Allow unresolved references in shared libaries"),
427 TWO_DASHES },
428 { {"no-allow-shlib-undefined", no_argument, NULL,
429 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
430 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
431 TWO_DASHES },
432 { {"allow-multiple-definition", no_argument, NULL,
433 OPTION_ALLOW_MULTIPLE_DEFINITION},
434 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
435 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
436 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
437 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
438 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
439 { {"default-imported-symver", no_argument, NULL,
440 OPTION_DEFAULT_IMPORTED_SYMVER},
441 '\0', NULL, N_("Create default symbol version for imported symbols"),
442 TWO_DASHES },
443 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
444 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
445 { {"no-warn-search-mismatch", no_argument, NULL,
446 OPTION_NO_WARN_SEARCH_MISMATCH},
447 '\0', NULL, N_("Don't warn on finding an incompatible library"),
448 TWO_DASHES},
449 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
450 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
451 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
452 '\0', NULL, N_("Create an output file even if errors occur"),
453 TWO_DASHES },
454 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
455 '\0', NULL, NULL, NO_HELP },
456 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
457 '\0', NULL, N_("Only use library directories specified on\n"
458 " the command line"),
459 ONE_DASH },
460 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
461 '\0', N_("TARGET"), N_("Specify target of output file"),
462 EXACTLY_TWO_DASHES },
463 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
464 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
465 { {"reduce-memory-overheads", no_argument, NULL,
466 OPTION_REDUCE_MEMORY_OVERHEADS},
467 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
468 TWO_DASHES },
469 { {"relax", no_argument, NULL, OPTION_RELAX},
470 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
471 { {"retain-symbols-file", required_argument, NULL,
472 OPTION_RETAIN_SYMBOLS_FILE},
473 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
474 { {"rpath", required_argument, NULL, OPTION_RPATH},
475 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
476 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
477 '\0', N_("PATH"), N_("Set link time shared library search path"),
478 ONE_DASH },
479 { {"shared", no_argument, NULL, OPTION_SHARED},
480 '\0', NULL, N_("Create a shared library"), ONE_DASH },
481 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
482 '\0', NULL, NULL, ONE_DASH },
483 { {"pie", no_argument, NULL, OPTION_PIE},
484 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
485 { {"pic-executable", no_argument, NULL, OPTION_PIE},
486 '\0', NULL, NULL, TWO_DASHES },
487 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
488 '\0', N_("[=ascending|descending]"),
489 N_("Sort common symbols by alignment [in specified order]"),
490 TWO_DASHES },
491 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
492 '\0', NULL, NULL, NO_HELP },
493 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
494 '\0', N_("name|alignment"),
495 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
496 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
497 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
498 TWO_DASHES },
499 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
500 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
501 TWO_DASHES },
502 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
503 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
504 TWO_DASHES },
505 { {"stats", no_argument, NULL, OPTION_STATS},
506 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
507 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
508 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
509 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
510 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
511 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
512 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
513 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
514 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
515 TWO_DASHES },
516 { {"Tbss", required_argument, NULL, OPTION_TBSS},
517 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
518 { {"Tdata", required_argument, NULL, OPTION_TDATA},
519 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
520 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
521 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
522 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
523 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
524 { {"unresolved-symbols=<method>", required_argument, NULL,
525 OPTION_UNRESOLVED_SYMBOLS},
526 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
527 " ignore-all, report-all, ignore-in-object-files,\n"
528 " ignore-in-shared-libs"),
529 TWO_DASHES },
530 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
531 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
532 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
533 '\0', NULL, NULL, NO_HELP },
534 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
535 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
536 { {"version-exports-section", required_argument, NULL,
537 OPTION_VERSION_EXPORTS_SECTION },
538 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
539 " SYMBOL as the version."),
540 TWO_DASHES },
541 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
542 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
543 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
544 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
545 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
546 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
547 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
548 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
549 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
550 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
551 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
552 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
553 TWO_DASHES },
554 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
555 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
556 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
557 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
558 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
559 '\0', NULL, N_("Warn if start of section changes due to alignment"),
560 TWO_DASHES },
561 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
562 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
563 TWO_DASHES },
564 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
565 '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
566 TWO_DASHES },
567 { {"warn-unresolved-symbols", no_argument, NULL,
568 OPTION_WARN_UNRESOLVED_SYMBOLS},
569 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
570 { {"error-unresolved-symbols", no_argument, NULL,
571 OPTION_ERROR_UNRESOLVED_SYMBOLS},
572 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
573 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
574 '\0', NULL, N_("Include all objects from following archives"),
575 TWO_DASHES },
576 { {"wrap", required_argument, NULL, OPTION_WRAP},
577 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
578 };
579
580 #define OPTION_COUNT ARRAY_SIZE (ld_options)
581
582 void
583 parse_args (unsigned argc, char **argv)
584 {
585 unsigned i;
586 int is, il, irl;
587 int ingroup = 0;
588 char *default_dirlist = NULL;
589 char *shortopts;
590 struct option *longopts;
591 struct option *really_longopts;
592 int last_optind;
593 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
594
595 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
596 longopts = (struct option *)
597 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
598 really_longopts = (struct option *)
599 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
600
601 /* Starting the short option string with '-' is for programs that
602 expect options and other ARGV-elements in any order and that care about
603 the ordering of the two. We describe each non-option ARGV-element
604 as if it were the argument of an option with character code 1. */
605 shortopts[0] = '-';
606 is = 1;
607 il = 0;
608 irl = 0;
609 for (i = 0; i < OPTION_COUNT; i++)
610 {
611 if (ld_options[i].shortopt != '\0')
612 {
613 shortopts[is] = ld_options[i].shortopt;
614 ++is;
615 if (ld_options[i].opt.has_arg == required_argument
616 || ld_options[i].opt.has_arg == optional_argument)
617 {
618 shortopts[is] = ':';
619 ++is;
620 if (ld_options[i].opt.has_arg == optional_argument)
621 {
622 shortopts[is] = ':';
623 ++is;
624 }
625 }
626 }
627 if (ld_options[i].opt.name != NULL)
628 {
629 if (ld_options[i].control == EXACTLY_TWO_DASHES)
630 {
631 really_longopts[irl] = ld_options[i].opt;
632 ++irl;
633 }
634 else
635 {
636 longopts[il] = ld_options[i].opt;
637 ++il;
638 }
639 }
640 }
641 shortopts[is] = '\0';
642 longopts[il].name = NULL;
643 really_longopts[irl].name = NULL;
644
645 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
646
647 /* The -G option is ambiguous on different platforms. Sometimes it
648 specifies the largest data size to put into the small data
649 section. Sometimes it is equivalent to --shared. Unfortunately,
650 the first form takes an argument, while the second does not.
651
652 We need to permit the --shared form because on some platforms,
653 such as Solaris, gcc -shared will pass -G to the linker.
654
655 To permit either usage, we look through the argument list. If we
656 find -G not followed by a number, we change it into --shared.
657 This will work for most normal cases. */
658 for (i = 1; i < argc; i++)
659 if (strcmp (argv[i], "-G") == 0
660 && (i + 1 >= argc
661 || ! ISDIGIT (argv[i + 1][0])))
662 argv[i] = (char *) "--shared";
663
664 /* Because we permit long options to start with a single dash, and
665 we have a --library option, and the -l option is conventionally
666 used with an immediately following argument, we can have bad
667 results if somebody tries to use -l with a library whose name
668 happens to start with "ibrary", as in -li. We avoid problems by
669 simply turning -l into --library. This means that users will
670 have to use two dashes in order to use --library, which is OK
671 since that's how it is documented.
672
673 FIXME: It's possible that this problem can arise for other short
674 options as well, although the user does always have the recourse
675 of adding a space between the option and the argument. */
676 for (i = 1; i < argc; i++)
677 {
678 if (argv[i][0] == '-'
679 && argv[i][1] == 'l'
680 && argv[i][2] != '\0')
681 {
682 char *n;
683
684 n = (char *) xmalloc (strlen (argv[i]) + 20);
685 sprintf (n, "--library=%s", argv[i] + 2);
686 argv[i] = n;
687 }
688 }
689
690 last_optind = -1;
691 while (1)
692 {
693 int longind;
694 int optc;
695
696 /* Using last_optind lets us avoid calling ldemul_parse_args
697 multiple times on a single option, which would lead to
698 confusion in the internal static variables maintained by
699 getopt. This could otherwise happen for an argument like
700 -nx, in which the -n is parsed as a single option, and we
701 loop around to pick up the -x. */
702 if (optind != last_optind)
703 if (ldemul_parse_args (argc, argv))
704 continue;
705
706 /* getopt_long_only is like getopt_long, but '-' as well as '--'
707 can indicate a long option. */
708 opterr = 0;
709 last_optind = optind;
710 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
711 if (optc == '?')
712 {
713 optind = last_optind;
714 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
715 }
716
717 if (ldemul_handle_option (optc))
718 continue;
719
720 if (optc == -1)
721 break;
722
723 switch (optc)
724 {
725 case '?':
726 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
727 /* Fall through. */
728
729 default:
730 einfo (_("%P%F: use the --help option for usage information\n"));
731
732 case 1: /* File name. */
733 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
734 break;
735
736 case OPTION_IGNORE:
737 break;
738 case 'a':
739 /* For HP/UX compatibility. Actually -a shared should mean
740 ``use only shared libraries'' but, then, we don't
741 currently support shared libraries on HP/UX anyhow. */
742 if (strcmp (optarg, "archive") == 0)
743 config.dynamic_link = FALSE;
744 else if (strcmp (optarg, "shared") == 0
745 || strcmp (optarg, "default") == 0)
746 config.dynamic_link = TRUE;
747 else
748 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
749 break;
750 case OPTION_ASSERT:
751 /* FIXME: We just ignore these, but we should handle them. */
752 if (strcmp (optarg, "definitions") == 0)
753 ;
754 else if (strcmp (optarg, "nodefinitions") == 0)
755 ;
756 else if (strcmp (optarg, "nosymbolic") == 0)
757 ;
758 else if (strcmp (optarg, "pure-text") == 0)
759 ;
760 else
761 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
762 break;
763 case 'A':
764 ldfile_add_arch (optarg);
765 break;
766 case 'b':
767 lang_add_target (optarg);
768 break;
769 case 'c':
770 ldfile_open_command_file (optarg);
771 parser_input = input_mri_script;
772 yyparse ();
773 break;
774 case OPTION_CALL_SHARED:
775 config.dynamic_link = TRUE;
776 break;
777 case OPTION_NON_SHARED:
778 config.dynamic_link = FALSE;
779 break;
780 case OPTION_CREF:
781 command_line.cref = TRUE;
782 link_info.notice_all = TRUE;
783 break;
784 case 'd':
785 command_line.force_common_definition = TRUE;
786 break;
787 case OPTION_DEFSYM:
788 lex_string = optarg;
789 lex_redirect (optarg);
790 parser_input = input_defsym;
791 parsing_defsym = 1;
792 yyparse ();
793 parsing_defsym = 0;
794 lex_string = NULL;
795 break;
796 case OPTION_DEMANGLE:
797 demangling = TRUE;
798 if (optarg != NULL)
799 {
800 enum demangling_styles style;
801
802 style = cplus_demangle_name_to_style (optarg);
803 if (style == unknown_demangling)
804 einfo (_("%F%P: unknown demangling style `%s'"),
805 optarg);
806
807 cplus_demangle_set_style (style);
808 }
809 break;
810 case 'I': /* Used on Solaris. */
811 case OPTION_DYNAMIC_LINKER:
812 command_line.interpreter = optarg;
813 break;
814 case OPTION_SYSROOT:
815 /* Already handled in ldmain.c. */
816 break;
817 case OPTION_EB:
818 command_line.endian = ENDIAN_BIG;
819 break;
820 case OPTION_EL:
821 command_line.endian = ENDIAN_LITTLE;
822 break;
823 case OPTION_EMBEDDED_RELOCS:
824 command_line.embedded_relocs = TRUE;
825 break;
826 case OPTION_EXPORT_DYNAMIC:
827 case 'E': /* HP/UX compatibility. */
828 link_info.export_dynamic = TRUE;
829 break;
830 case OPTION_NO_EXPORT_DYNAMIC:
831 link_info.export_dynamic = FALSE;
832 break;
833 case 'e':
834 lang_add_entry (optarg, TRUE);
835 break;
836 case 'f':
837 if (command_line.auxiliary_filters == NULL)
838 {
839 command_line.auxiliary_filters = (char **)
840 xmalloc (2 * sizeof (char *));
841 command_line.auxiliary_filters[0] = optarg;
842 command_line.auxiliary_filters[1] = NULL;
843 }
844 else
845 {
846 int c;
847 char **p;
848
849 c = 0;
850 for (p = command_line.auxiliary_filters; *p != NULL; p++)
851 ++c;
852 command_line.auxiliary_filters = (char **)
853 xrealloc (command_line.auxiliary_filters,
854 (c + 2) * sizeof (char *));
855 command_line.auxiliary_filters[c] = optarg;
856 command_line.auxiliary_filters[c + 1] = NULL;
857 }
858 break;
859 case 'F':
860 command_line.filter_shlib = optarg;
861 break;
862 case OPTION_FORCE_EXE_SUFFIX:
863 command_line.force_exe_suffix = TRUE;
864 break;
865 case 'G':
866 {
867 char *end;
868 g_switch_value = strtoul (optarg, &end, 0);
869 if (*end)
870 einfo (_("%P%F: invalid number `%s'\n"), optarg);
871 }
872 break;
873 case 'g':
874 /* Ignore. */
875 break;
876 case OPTION_GC_SECTIONS:
877 link_info.gc_sections = TRUE;
878 break;
879 case OPTION_PRINT_GC_SECTIONS:
880 link_info.print_gc_sections = TRUE;
881 break;
882 case OPTION_HELP:
883 help ();
884 xexit (0);
885 break;
886 case 'L':
887 ldfile_add_library_path (optarg, TRUE);
888 break;
889 case 'l':
890 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
891 break;
892 case 'M':
893 config.map_filename = "-";
894 break;
895 case 'm':
896 /* Ignore. Was handled in a pre-parse. */
897 break;
898 case OPTION_MAP:
899 config.map_filename = optarg;
900 break;
901 case 'N':
902 config.text_read_only = FALSE;
903 config.magic_demand_paged = FALSE;
904 config.dynamic_link = FALSE;
905 break;
906 case OPTION_NO_OMAGIC:
907 config.text_read_only = TRUE;
908 config.magic_demand_paged = TRUE;
909 /* NB/ Does not set dynamic_link to TRUE.
910 Use --call-shared or -Bdynamic for this. */
911 break;
912 case 'n':
913 config.magic_demand_paged = FALSE;
914 config.dynamic_link = FALSE;
915 break;
916 case OPTION_NO_DEFINE_COMMON:
917 command_line.inhibit_common_definition = TRUE;
918 break;
919 case OPTION_NO_DEMANGLE:
920 demangling = FALSE;
921 break;
922 case OPTION_NO_GC_SECTIONS:
923 link_info.gc_sections = FALSE;
924 break;
925 case OPTION_NO_PRINT_GC_SECTIONS:
926 link_info.print_gc_sections = FALSE;
927 break;
928 case OPTION_NO_KEEP_MEMORY:
929 link_info.keep_memory = FALSE;
930 break;
931 case OPTION_NO_UNDEFINED:
932 link_info.unresolved_syms_in_objects
933 = how_to_report_unresolved_symbols;
934 break;
935 case OPTION_ALLOW_SHLIB_UNDEFINED:
936 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
937 break;
938 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
939 link_info.unresolved_syms_in_shared_libs
940 = how_to_report_unresolved_symbols;
941 break;
942 case OPTION_UNRESOLVED_SYMBOLS:
943 if (strcmp (optarg, "ignore-all") == 0)
944 {
945 link_info.unresolved_syms_in_objects = RM_IGNORE;
946 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
947 }
948 else if (strcmp (optarg, "report-all") == 0)
949 {
950 link_info.unresolved_syms_in_objects
951 = how_to_report_unresolved_symbols;
952 link_info.unresolved_syms_in_shared_libs
953 = how_to_report_unresolved_symbols;
954 }
955 else if (strcmp (optarg, "ignore-in-object-files") == 0)
956 {
957 link_info.unresolved_syms_in_objects = RM_IGNORE;
958 link_info.unresolved_syms_in_shared_libs
959 = how_to_report_unresolved_symbols;
960 }
961 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
962 {
963 link_info.unresolved_syms_in_objects
964 = how_to_report_unresolved_symbols;
965 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
966 }
967 else
968 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
969 break;
970 case OPTION_WARN_UNRESOLVED_SYMBOLS:
971 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
972 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
973 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
974 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
975 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
976 break;
977
978 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
979 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
980 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
981 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
982 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
983 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
984 break;
985 case OPTION_ALLOW_MULTIPLE_DEFINITION:
986 link_info.allow_multiple_definition = TRUE;
987 break;
988 case OPTION_NO_UNDEFINED_VERSION:
989 link_info.allow_undefined_version = FALSE;
990 break;
991 case OPTION_DEFAULT_SYMVER:
992 link_info.create_default_symver = TRUE;
993 break;
994 case OPTION_DEFAULT_IMPORTED_SYMVER:
995 link_info.default_imported_symver = TRUE;
996 break;
997 case OPTION_NO_WARN_MISMATCH:
998 command_line.warn_mismatch = FALSE;
999 break;
1000 case OPTION_NO_WARN_SEARCH_MISMATCH:
1001 command_line.warn_search_mismatch = FALSE;
1002 break;
1003 case OPTION_NOINHIBIT_EXEC:
1004 force_make_executable = TRUE;
1005 break;
1006 case OPTION_NOSTDLIB:
1007 config.only_cmd_line_lib_dirs = TRUE;
1008 break;
1009 case OPTION_NO_WHOLE_ARCHIVE:
1010 whole_archive = FALSE;
1011 break;
1012 case 'O':
1013 /* FIXME "-O<non-digits> <value>" used to set the address of
1014 section <non-digits>. Was this for compatibility with
1015 something, or can we create a new option to do that
1016 (with a syntax similar to -defsym)?
1017 getopt can't handle two args to an option without kludges. */
1018
1019 /* Enable optimizations of output files. */
1020 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1021 break;
1022 case 'o':
1023 lang_add_output (optarg, 0);
1024 break;
1025 case OPTION_OFORMAT:
1026 lang_add_output_format (optarg, NULL, NULL, 0);
1027 break;
1028 case 'q':
1029 link_info.emitrelocations = TRUE;
1030 break;
1031 case 'i':
1032 case 'r':
1033 if (optind == last_optind)
1034 /* This can happen if the user put "-rpath,a" on the command
1035 line. (Or something similar. The comma is important).
1036 Getopt becomes confused and thinks that this is a -r option
1037 but it cannot parse the text after the -r so it refuses to
1038 increment the optind counter. Detect this case and issue
1039 an error message here. We cannot just make this a warning,
1040 increment optind, and continue because getopt is too confused
1041 and will seg-fault the next time around. */
1042 einfo(_("%P%F: bad -rpath option\n"));
1043
1044 link_info.relocatable = TRUE;
1045 config.build_constructors = FALSE;
1046 config.magic_demand_paged = FALSE;
1047 config.text_read_only = FALSE;
1048 config.dynamic_link = FALSE;
1049 break;
1050 case 'R':
1051 /* The GNU linker traditionally uses -R to mean to include
1052 only the symbols from a file. The Solaris linker uses -R
1053 to set the path used by the runtime linker to find
1054 libraries. This is the GNU linker -rpath argument. We
1055 try to support both simultaneously by checking the file
1056 named. If it is a directory, rather than a regular file,
1057 we assume -rpath was meant. */
1058 {
1059 struct stat s;
1060
1061 if (stat (optarg, &s) >= 0
1062 && ! S_ISDIR (s.st_mode))
1063 {
1064 lang_add_input_file (optarg,
1065 lang_input_file_is_symbols_only_enum,
1066 NULL);
1067 break;
1068 }
1069 }
1070 /* Fall through. */
1071 case OPTION_RPATH:
1072 if (command_line.rpath == NULL)
1073 command_line.rpath = xstrdup (optarg);
1074 else
1075 {
1076 size_t rpath_len = strlen (command_line.rpath);
1077 size_t optarg_len = strlen (optarg);
1078 char *buf;
1079 char *cp = command_line.rpath;
1080
1081 /* First see whether OPTARG is already in the path. */
1082 do
1083 {
1084 if (strncmp (optarg, cp, optarg_len) == 0
1085 && (cp[optarg_len] == 0
1086 || cp[optarg_len] == config.rpath_separator))
1087 /* We found it. */
1088 break;
1089
1090 /* Not yet found. */
1091 cp = strchr (cp, config.rpath_separator);
1092 if (cp != NULL)
1093 ++cp;
1094 }
1095 while (cp != NULL);
1096
1097 if (cp == NULL)
1098 {
1099 buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1100 sprintf (buf, "%s%c%s", command_line.rpath,
1101 config.rpath_separator, optarg);
1102 free (command_line.rpath);
1103 command_line.rpath = buf;
1104 }
1105 }
1106 break;
1107 case OPTION_RPATH_LINK:
1108 if (command_line.rpath_link == NULL)
1109 command_line.rpath_link = xstrdup (optarg);
1110 else
1111 {
1112 char *buf;
1113
1114 buf = (char *) xmalloc (strlen (command_line.rpath_link)
1115 + strlen (optarg)
1116 + 2);
1117 sprintf (buf, "%s%c%s", command_line.rpath_link,
1118 config.rpath_separator, optarg);
1119 free (command_line.rpath_link);
1120 command_line.rpath_link = buf;
1121 }
1122 break;
1123 case OPTION_RELAX:
1124 command_line.relax = TRUE;
1125 break;
1126 case OPTION_RETAIN_SYMBOLS_FILE:
1127 add_keepsyms_file (optarg);
1128 break;
1129 case 'S':
1130 link_info.strip = strip_debugger;
1131 break;
1132 case 's':
1133 link_info.strip = strip_all;
1134 break;
1135 case OPTION_STRIP_DISCARDED:
1136 link_info.strip_discarded = TRUE;
1137 break;
1138 case OPTION_NO_STRIP_DISCARDED:
1139 link_info.strip_discarded = FALSE;
1140 break;
1141 case OPTION_SHARED:
1142 if (config.has_shared)
1143 {
1144 link_info.shared = TRUE;
1145 /* When creating a shared library, the default
1146 behaviour is to ignore any unresolved references. */
1147 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1148 link_info.unresolved_syms_in_objects = RM_IGNORE;
1149 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1150 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1151 }
1152 else
1153 einfo (_("%P%F: -shared not supported\n"));
1154 break;
1155 case OPTION_PIE:
1156 if (config.has_shared)
1157 {
1158 link_info.shared = TRUE;
1159 link_info.pie = TRUE;
1160 }
1161 else
1162 einfo (_("%P%F: -pie not supported\n"));
1163 break;
1164 case 'h': /* Used on Solaris. */
1165 case OPTION_SONAME:
1166 command_line.soname = optarg;
1167 break;
1168 case OPTION_SORT_COMMON:
1169 if (optarg == NULL
1170 || strcmp (optarg, N_("descending")) == 0)
1171 config.sort_common = sort_descending;
1172 else if (strcmp (optarg, N_("ascending")) == 0)
1173 config.sort_common = sort_ascending;
1174 else
1175 einfo (_("%P%F: invalid common section sorting option: %s\n"),
1176 optarg);
1177 break;
1178 case OPTION_SORT_SECTION:
1179 if (strcmp (optarg, N_("name")) == 0)
1180 sort_section = by_name;
1181 else if (strcmp (optarg, N_("alignment")) == 0)
1182 sort_section = by_alignment;
1183 else
1184 einfo (_("%P%F: invalid section sorting option: %s\n"),
1185 optarg);
1186 break;
1187 case OPTION_STATS:
1188 config.stats = TRUE;
1189 break;
1190 case OPTION_SYMBOLIC:
1191 command_line.symbolic = symbolic;
1192 break;
1193 case OPTION_SYMBOLIC_FUNCTIONS:
1194 command_line.symbolic = symbolic_functions;
1195 break;
1196 case 't':
1197 trace_files = TRUE;
1198 break;
1199 case 'T':
1200 previous_script_handle = saved_script_handle;
1201 ldfile_open_command_file (optarg);
1202 parser_input = input_script;
1203 yyparse ();
1204 previous_script_handle = NULL;
1205 break;
1206 case OPTION_DEFAULT_SCRIPT:
1207 command_line.default_script = optarg;
1208 break;
1209 case OPTION_SECTION_START:
1210 {
1211 char *optarg2;
1212 char *sec_name;
1213 int len;
1214
1215 /* Check for <something>=<somthing>... */
1216 optarg2 = strchr (optarg, '=');
1217 if (optarg2 == NULL)
1218 einfo (_("%P%F: invalid argument to option"
1219 " \"--section-start\"\n"));
1220
1221 optarg2++;
1222
1223 /* So far so good. Are all the args present? */
1224 if ((*optarg == '\0') || (*optarg2 == '\0'))
1225 einfo (_("%P%F: missing argument(s) to option"
1226 " \"--section-start\"\n"));
1227
1228 /* We must copy the section name as set_section_start
1229 doesn't do it for us. */
1230 len = optarg2 - optarg;
1231 sec_name = (char *) xmalloc (len);
1232 memcpy (sec_name, optarg, len - 1);
1233 sec_name[len - 1] = 0;
1234
1235 /* Then set it... */
1236 set_section_start (sec_name, optarg2);
1237 }
1238 break;
1239 case OPTION_TARGET_HELP:
1240 /* Mention any target specific options. */
1241 ldemul_list_emulation_options (stdout);
1242 exit (0);
1243 case OPTION_TBSS:
1244 set_segment_start (".bss", optarg);
1245 break;
1246 case OPTION_TDATA:
1247 set_segment_start (".data", optarg);
1248 break;
1249 case OPTION_TTEXT:
1250 set_segment_start (".text", optarg);
1251 break;
1252 case OPTION_TTEXT_SEGMENT:
1253 set_segment_start (".text-segment", optarg);
1254 break;
1255 case OPTION_TRADITIONAL_FORMAT:
1256 link_info.traditional_format = TRUE;
1257 break;
1258 case OPTION_TASK_LINK:
1259 link_info.task_link = TRUE;
1260 /* Fall through - do an implied -r option. */
1261 case OPTION_UR:
1262 link_info.relocatable = TRUE;
1263 config.build_constructors = TRUE;
1264 config.magic_demand_paged = FALSE;
1265 config.text_read_only = FALSE;
1266 config.dynamic_link = FALSE;
1267 break;
1268 case 'u':
1269 ldlang_add_undef (optarg);
1270 break;
1271 case OPTION_UNIQUE:
1272 if (optarg != NULL)
1273 lang_add_unique (optarg);
1274 else
1275 config.unique_orphan_sections = TRUE;
1276 break;
1277 case OPTION_VERBOSE:
1278 ldversion (1);
1279 version_printed = TRUE;
1280 trace_file_tries = TRUE;
1281 overflow_cutoff_limit = -2;
1282 break;
1283 case 'v':
1284 ldversion (0);
1285 version_printed = TRUE;
1286 break;
1287 case 'V':
1288 ldversion (1);
1289 version_printed = TRUE;
1290 break;
1291 case OPTION_VERSION:
1292 ldversion (2);
1293 xexit (0);
1294 break;
1295 case OPTION_VERSION_SCRIPT:
1296 /* This option indicates a small script that only specifies
1297 version information. Read it, but don't assume that
1298 we've seen a linker script. */
1299 {
1300 FILE *hold_script_handle;
1301
1302 hold_script_handle = saved_script_handle;
1303 ldfile_open_command_file (optarg);
1304 saved_script_handle = hold_script_handle;
1305 parser_input = input_version_script;
1306 yyparse ();
1307 }
1308 break;
1309 case OPTION_VERSION_EXPORTS_SECTION:
1310 /* This option records a version symbol to be applied to the
1311 symbols listed for export to be found in the object files
1312 .exports sections. */
1313 command_line.version_exports_section = optarg;
1314 break;
1315 case OPTION_DYNAMIC_LIST_DATA:
1316 command_line.dynamic_list = dynamic_list_data;
1317 if (command_line.symbolic == symbolic)
1318 command_line.symbolic = symbolic_unset;
1319 break;
1320 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1321 lang_append_dynamic_list_cpp_typeinfo ();
1322 if (command_line.dynamic_list != dynamic_list_data)
1323 command_line.dynamic_list = dynamic_list;
1324 if (command_line.symbolic == symbolic)
1325 command_line.symbolic = symbolic_unset;
1326 break;
1327 case OPTION_DYNAMIC_LIST_CPP_NEW:
1328 lang_append_dynamic_list_cpp_new ();
1329 if (command_line.dynamic_list != dynamic_list_data)
1330 command_line.dynamic_list = dynamic_list;
1331 if (command_line.symbolic == symbolic)
1332 command_line.symbolic = symbolic_unset;
1333 break;
1334 case OPTION_DYNAMIC_LIST:
1335 /* This option indicates a small script that only specifies
1336 a dynamic list. Read it, but don't assume that we've
1337 seen a linker script. */
1338 {
1339 FILE *hold_script_handle;
1340
1341 hold_script_handle = saved_script_handle;
1342 ldfile_open_command_file (optarg);
1343 saved_script_handle = hold_script_handle;
1344 parser_input = input_dynamic_list;
1345 yyparse ();
1346 }
1347 if (command_line.dynamic_list != dynamic_list_data)
1348 command_line.dynamic_list = dynamic_list;
1349 if (command_line.symbolic == symbolic)
1350 command_line.symbolic = symbolic_unset;
1351 break;
1352 case OPTION_WARN_COMMON:
1353 config.warn_common = TRUE;
1354 break;
1355 case OPTION_WARN_CONSTRUCTORS:
1356 config.warn_constructors = TRUE;
1357 break;
1358 case OPTION_WARN_FATAL:
1359 config.fatal_warnings = TRUE;
1360 break;
1361 case OPTION_NO_WARN_FATAL:
1362 config.fatal_warnings = FALSE;
1363 break;
1364 case OPTION_WARN_MULTIPLE_GP:
1365 config.warn_multiple_gp = TRUE;
1366 break;
1367 case OPTION_WARN_ONCE:
1368 config.warn_once = TRUE;
1369 break;
1370 case OPTION_WARN_SECTION_ALIGN:
1371 config.warn_section_align = TRUE;
1372 break;
1373 case OPTION_WARN_SHARED_TEXTREL:
1374 link_info.warn_shared_textrel = TRUE;
1375 break;
1376 case OPTION_WARN_ALTERNATE_EM:
1377 link_info.warn_alternate_em = TRUE;
1378 break;
1379 case OPTION_WHOLE_ARCHIVE:
1380 whole_archive = TRUE;
1381 break;
1382 case OPTION_ADD_NEEDED:
1383 add_needed = TRUE;
1384 break;
1385 case OPTION_NO_ADD_NEEDED:
1386 add_needed = FALSE;
1387 break;
1388 case OPTION_AS_NEEDED:
1389 as_needed = TRUE;
1390 break;
1391 case OPTION_NO_AS_NEEDED:
1392 as_needed = FALSE;
1393 break;
1394 case OPTION_WRAP:
1395 add_wrap (optarg);
1396 break;
1397 case OPTION_DISCARD_NONE:
1398 link_info.discard = discard_none;
1399 break;
1400 case 'X':
1401 link_info.discard = discard_l;
1402 break;
1403 case 'x':
1404 link_info.discard = discard_all;
1405 break;
1406 case 'Y':
1407 if (CONST_STRNEQ (optarg, "P,"))
1408 optarg += 2;
1409 if (default_dirlist != NULL)
1410 free (default_dirlist);
1411 default_dirlist = xstrdup (optarg);
1412 break;
1413 case 'y':
1414 add_ysym (optarg);
1415 break;
1416 case OPTION_SPARE_DYNAMIC_TAGS:
1417 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1418 break;
1419 case OPTION_SPLIT_BY_RELOC:
1420 if (optarg != NULL)
1421 config.split_by_reloc = strtoul (optarg, NULL, 0);
1422 else
1423 config.split_by_reloc = 32768;
1424 break;
1425 case OPTION_SPLIT_BY_FILE:
1426 if (optarg != NULL)
1427 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1428 else
1429 config.split_by_file = 1;
1430 break;
1431 case OPTION_CHECK_SECTIONS:
1432 command_line.check_section_addresses = 1;
1433 break;
1434 case OPTION_NO_CHECK_SECTIONS:
1435 command_line.check_section_addresses = 0;
1436 break;
1437 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1438 command_line.accept_unknown_input_arch = TRUE;
1439 break;
1440 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1441 command_line.accept_unknown_input_arch = FALSE;
1442 break;
1443 case '(':
1444 if (ingroup)
1445 einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1446
1447 lang_enter_group ();
1448 ingroup = 1;
1449 break;
1450 case ')':
1451 if (! ingroup)
1452 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1453
1454 lang_leave_group ();
1455 ingroup = 0;
1456 break;
1457
1458 case OPTION_INIT:
1459 link_info.init_function = optarg;
1460 break;
1461
1462 case OPTION_FINI:
1463 link_info.fini_function = optarg;
1464 break;
1465
1466 case OPTION_REDUCE_MEMORY_OVERHEADS:
1467 link_info.reduce_memory_overheads = TRUE;
1468 if (config.hash_table_size == 0)
1469 config.hash_table_size = 1021;
1470 break;
1471
1472 case OPTION_HASH_SIZE:
1473 {
1474 bfd_size_type new_size;
1475
1476 new_size = strtoul (optarg, NULL, 0);
1477 if (new_size)
1478 config.hash_table_size = new_size;
1479 else
1480 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1481 }
1482 break;
1483 }
1484 }
1485
1486 if (ingroup)
1487 lang_leave_group ();
1488
1489 if (default_dirlist != NULL)
1490 {
1491 set_default_dirlist (default_dirlist);
1492 free (default_dirlist);
1493 }
1494
1495 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1496 /* FIXME: Should we allow emulations a chance to set this ? */
1497 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1498
1499 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1500 /* FIXME: Should we allow emulations a chance to set this ? */
1501 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1502 }
1503
1504 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1505 library search path. */
1506
1507 static void
1508 set_default_dirlist (char *dirlist_ptr)
1509 {
1510 char *p;
1511
1512 while (1)
1513 {
1514 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1515 if (p != NULL)
1516 *p = '\0';
1517 if (*dirlist_ptr != '\0')
1518 ldfile_add_library_path (dirlist_ptr, TRUE);
1519 if (p == NULL)
1520 break;
1521 dirlist_ptr = p + 1;
1522 }
1523 }
1524
1525 static void
1526 set_section_start (char *sect, char *valstr)
1527 {
1528 const char *end;
1529 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1530 if (*end)
1531 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1532 lang_section_start (sect, exp_intop (val), NULL);
1533 }
1534
1535 static void
1536 set_segment_start (const char *section, char *valstr)
1537 {
1538 const char *name;
1539 const char *end;
1540 segment_type *seg;
1541
1542 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1543 if (*end)
1544 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1545 /* If we already have an entry for this segment, update the existing
1546 value. */
1547 name = section + 1;
1548 for (seg = segments; seg; seg = seg->next)
1549 if (strcmp (seg->name, name) == 0)
1550 {
1551 seg->value = val;
1552 return;
1553 }
1554 /* There was no existing value so we must create a new segment
1555 entry. */
1556 seg = (segment_type *) stat_alloc (sizeof (*seg));
1557 seg->name = name;
1558 seg->value = val;
1559 seg->used = FALSE;
1560 /* Add it to the linked list of segments. */
1561 seg->next = segments;
1562 segments = seg;
1563 /* Historically, -Ttext and friends set the base address of a
1564 particular section. For backwards compatibility, we still do
1565 that. If a SEGMENT_START directive is seen, the section address
1566 assignment will be disabled. */
1567 lang_section_start (section, exp_intop (val), seg);
1568 }
1569
1570 \f
1571 /* Print help messages for the options. */
1572
1573 static void
1574 help (void)
1575 {
1576 unsigned i;
1577 const char **targets, **pp;
1578 int len;
1579
1580 printf (_("Usage: %s [options] file...\n"), program_name);
1581
1582 printf (_("Options:\n"));
1583 for (i = 0; i < OPTION_COUNT; i++)
1584 {
1585 if (ld_options[i].doc != NULL)
1586 {
1587 bfd_boolean comma;
1588 unsigned j;
1589
1590 printf (" ");
1591
1592 comma = FALSE;
1593 len = 2;
1594
1595 j = i;
1596 do
1597 {
1598 if (ld_options[j].shortopt != '\0'
1599 && ld_options[j].control != NO_HELP)
1600 {
1601 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1602 len += (comma ? 2 : 0) + 2;
1603 if (ld_options[j].arg != NULL)
1604 {
1605 if (ld_options[j].opt.has_arg != optional_argument)
1606 {
1607 printf (" ");
1608 ++len;
1609 }
1610 printf ("%s", _(ld_options[j].arg));
1611 len += strlen (_(ld_options[j].arg));
1612 }
1613 comma = TRUE;
1614 }
1615 ++j;
1616 }
1617 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1618
1619 j = i;
1620 do
1621 {
1622 if (ld_options[j].opt.name != NULL
1623 && ld_options[j].control != NO_HELP)
1624 {
1625 int two_dashes =
1626 (ld_options[j].control == TWO_DASHES
1627 || ld_options[j].control == EXACTLY_TWO_DASHES);
1628
1629 printf ("%s-%s%s",
1630 comma ? ", " : "",
1631 two_dashes ? "-" : "",
1632 ld_options[j].opt.name);
1633 len += ((comma ? 2 : 0)
1634 + 1
1635 + (two_dashes ? 1 : 0)
1636 + strlen (ld_options[j].opt.name));
1637 if (ld_options[j].arg != NULL)
1638 {
1639 printf (" %s", _(ld_options[j].arg));
1640 len += 1 + strlen (_(ld_options[j].arg));
1641 }
1642 comma = TRUE;
1643 }
1644 ++j;
1645 }
1646 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1647
1648 if (len >= 30)
1649 {
1650 printf ("\n");
1651 len = 0;
1652 }
1653
1654 for (; len < 30; len++)
1655 putchar (' ');
1656
1657 printf ("%s\n", _(ld_options[i].doc));
1658 }
1659 }
1660 printf (_(" @FILE"));
1661 for (len = strlen (" @FILE"); len < 30; len++)
1662 putchar (' ');
1663 printf (_("Read options from FILE\n"));
1664
1665 /* Note: Various tools (such as libtool) depend upon the
1666 format of the listings below - do not change them. */
1667 /* xgettext:c-format */
1668 printf (_("%s: supported targets:"), program_name);
1669 targets = bfd_target_list ();
1670 for (pp = targets; *pp != NULL; pp++)
1671 printf (" %s", *pp);
1672 free (targets);
1673 printf ("\n");
1674
1675 /* xgettext:c-format */
1676 printf (_("%s: supported emulations: "), program_name);
1677 ldemul_list_emulations (stdout);
1678 printf ("\n");
1679
1680 /* xgettext:c-format */
1681 printf (_("%s: emulation specific options:\n"), program_name);
1682 ldemul_list_emulation_options (stdout);
1683 printf ("\n");
1684
1685 if (REPORT_BUGS_TO[0])
1686 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1687 }
Patches to binutils for mingw-w64