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 GLD, the Gnu Linker.
7
8 GLD 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 2, or (at your option)
11 any later version.
12
13 GLD 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 GLD; see the file COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
21 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_WARN_MULTIPLE_GP,
120 OPTION_WARN_ONCE,
121 OPTION_WARN_SECTION_ALIGN,
122 OPTION_SPLIT_BY_RELOC,
123 OPTION_SPLIT_BY_FILE ,
124 OPTION_WHOLE_ARCHIVE,
125 OPTION_ADD_NEEDED,
126 OPTION_NO_ADD_NEEDED,
127 OPTION_AS_NEEDED,
128 OPTION_NO_AS_NEEDED,
129 OPTION_WRAP,
130 OPTION_FORCE_EXE_SUFFIX,
131 OPTION_GC_SECTIONS,
132 OPTION_NO_GC_SECTIONS,
133 OPTION_PRINT_GC_SECTIONS,
134 OPTION_NO_PRINT_GC_SECTIONS,
135 OPTION_HASH_SIZE,
136 OPTION_CHECK_SECTIONS,
137 OPTION_NO_CHECK_SECTIONS,
138 OPTION_NO_UNDEFINED,
139 OPTION_INIT,
140 OPTION_FINI,
141 OPTION_SECTION_START,
142 OPTION_UNIQUE,
143 OPTION_TARGET_HELP,
144 OPTION_ALLOW_SHLIB_UNDEFINED,
145 OPTION_NO_ALLOW_SHLIB_UNDEFINED,
146 OPTION_ALLOW_MULTIPLE_DEFINITION,
147 OPTION_NO_UNDEFINED_VERSION,
148 OPTION_DEFAULT_SYMVER,
149 OPTION_DEFAULT_IMPORTED_SYMVER,
150 OPTION_DISCARD_NONE,
151 OPTION_SPARE_DYNAMIC_TAGS,
152 OPTION_NO_DEFINE_COMMON,
153 OPTION_NOSTDLIB,
154 OPTION_NO_OMAGIC,
155 OPTION_STRIP_DISCARDED,
156 OPTION_NO_STRIP_DISCARDED,
157 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
158 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
159 OPTION_PIE,
160 OPTION_UNRESOLVED_SYMBOLS,
161 OPTION_WARN_UNRESOLVED_SYMBOLS,
162 OPTION_ERROR_UNRESOLVED_SYMBOLS,
163 OPTION_WARN_SHARED_TEXTREL,
164 OPTION_REDUCE_MEMORY_OVERHEADS,
165 OPTION_DEFAULT_SCRIPT
166 };
167
168 /* The long options. This structure is used for both the option
169 parsing and the help text. */
170
171 struct ld_option
172 {
173 /* The long option information. */
174 struct option opt;
175 /* The short option with the same meaning ('\0' if none). */
176 char shortopt;
177 /* The name of the argument (NULL if none). */
178 const char *arg;
179 /* The documentation string. If this is NULL, this is a synonym for
180 the previous option. */
181 const char *doc;
182 enum {
183 /* Use one dash before long option name. */
184 ONE_DASH,
185 /* Use two dashes before long option name. */
186 TWO_DASHES,
187 /* Only accept two dashes before the long option name.
188 This is an overloading of the use of this enum, since originally it
189 was only intended to tell the --help display function how to display
190 the long option name. This feature was added in order to resolve
191 the confusion about the -omagic command line switch. Is it setting
192 the output file name to "magic" or is it setting the NMAGIC flag on
193 the output ? It has been decided that it is setting the output file
194 name, and that if you want to set the NMAGIC flag you should use -N
195 or --omagic. */
196 EXACTLY_TWO_DASHES,
197 /* Don't mention this option in --help output. */
198 NO_HELP
199 } control;
200 };
201
202 static const struct ld_option ld_options[] =
203 {
204 { {NULL, required_argument, NULL, '\0'},
205 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
206 ONE_DASH },
207 { {"architecture", required_argument, NULL, 'A'},
208 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
209 { {"format", required_argument, NULL, 'b'},
210 'b', N_("TARGET"), N_("Specify target for following input files"),
211 TWO_DASHES },
212 { {"mri-script", required_argument, NULL, 'c'},
213 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
214 { {"dc", no_argument, NULL, 'd'},
215 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
216 { {"dp", no_argument, NULL, 'd'},
217 '\0', NULL, NULL, ONE_DASH },
218 { {"entry", required_argument, NULL, 'e'},
219 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
220 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
221 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
222 { {"EB", no_argument, NULL, OPTION_EB},
223 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
224 { {"EL", no_argument, NULL, OPTION_EL},
225 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
226 { {"auxiliary", required_argument, NULL, 'f'},
227 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
228 TWO_DASHES },
229 { {"filter", required_argument, NULL, 'F'},
230 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
231 TWO_DASHES },
232 { {NULL, no_argument, NULL, '\0'},
233 'g', NULL, N_("Ignored"), ONE_DASH },
234 { {"gpsize", required_argument, NULL, 'G'},
235 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
236 TWO_DASHES },
237 { {"soname", required_argument, NULL, OPTION_SONAME},
238 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
239 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
240 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
241 TWO_DASHES },
242 { {"library", required_argument, NULL, 'l'},
243 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
244 { {"library-path", required_argument, NULL, 'L'},
245 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
246 TWO_DASHES },
247 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
248 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
249 { {NULL, required_argument, NULL, '\0'},
250 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
251 { {"print-map", no_argument, NULL, 'M'},
252 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
253 { {"nmagic", no_argument, NULL, 'n'},
254 'n', NULL, N_("Do not page align data"), TWO_DASHES },
255 { {"omagic", no_argument, NULL, 'N'},
256 'N', NULL, N_("Do not page align data, do not make text readonly"),
257 EXACTLY_TWO_DASHES },
258 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
259 '\0', NULL, N_("Page align data, make text readonly"),
260 EXACTLY_TWO_DASHES },
261 { {"output", required_argument, NULL, 'o'},
262 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
263 { {NULL, required_argument, NULL, '\0'},
264 'O', NULL, N_("Optimize output file"), ONE_DASH },
265 { {"Qy", no_argument, NULL, OPTION_IGNORE},
266 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
267 { {"emit-relocs", no_argument, NULL, 'q'},
268 'q', NULL, "Generate relocations in final output", TWO_DASHES },
269 { {"relocatable", no_argument, NULL, 'r'},
270 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
271 { {NULL, no_argument, NULL, '\0'},
272 'i', NULL, NULL, ONE_DASH },
273 { {"just-symbols", required_argument, NULL, 'R'},
274 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
275 TWO_DASHES },
276 { {"strip-all", no_argument, NULL, 's'},
277 's', NULL, N_("Strip all symbols"), TWO_DASHES },
278 { {"strip-debug", no_argument, NULL, 'S'},
279 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
280 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
281 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
282 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
283 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
284 { {"trace", no_argument, NULL, 't'},
285 't', NULL, N_("Trace file opens"), TWO_DASHES },
286 { {"script", required_argument, NULL, 'T'},
287 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
288 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
289 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
290 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
291 '\0', NULL, NULL, ONE_DASH },
292 { {"undefined", required_argument, NULL, 'u'},
293 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
294 TWO_DASHES },
295 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
296 '\0', N_("[=SECTION]"),
297 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
298 { {"Ur", no_argument, NULL, OPTION_UR},
299 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
300 { {"version", no_argument, NULL, OPTION_VERSION},
301 'v', NULL, N_("Print version information"), TWO_DASHES },
302 { {NULL, no_argument, NULL, '\0'},
303 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
304 { {"discard-all", no_argument, NULL, 'x'},
305 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
306 { {"discard-locals", no_argument, NULL, 'X'},
307 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
308 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
309 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
310 { {"trace-symbol", required_argument, NULL, 'y'},
311 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
312 { {NULL, required_argument, NULL, '\0'},
313 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
314 ONE_DASH },
315 { {"start-group", no_argument, NULL, '('},
316 '(', NULL, N_("Start a group"), TWO_DASHES },
317 { {"end-group", no_argument, NULL, ')'},
318 ')', NULL, N_("End a group"), TWO_DASHES },
319 { {"accept-unknown-input-arch", no_argument, NULL,
320 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
321 '\0', NULL,
322 N_("Accept input files whose architecture cannot be determined"),
323 TWO_DASHES },
324 { {"no-accept-unknown-input-arch", no_argument, NULL,
325 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
326 '\0', NULL, N_("Reject input files whose architecture is unknown"),
327 TWO_DASHES },
328 { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED},
329 '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n"
330 "\t\t\t\tfollowing dynamic libs"), TWO_DASHES },
331 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED},
332 '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n"
333 "\t\t\t\tin following dynamic libs"), TWO_DASHES },
334 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED},
335 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
336 TWO_DASHES },
337 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED},
338 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"),
339 TWO_DASHES },
340 { {"assert", required_argument, NULL, OPTION_ASSERT},
341 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
342 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
343 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
344 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
345 '\0', NULL, NULL, ONE_DASH },
346 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
347 '\0', NULL, NULL, ONE_DASH },
348 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
349 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
350 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
351 '\0', NULL, NULL, ONE_DASH },
352 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
353 '\0', NULL, NULL, ONE_DASH },
354 { {"static", no_argument, NULL, OPTION_NON_SHARED},
355 '\0', NULL, NULL, ONE_DASH },
356 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
357 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
358 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
359 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
360 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
361 '\0', NULL, N_("Check section addresses for overlaps (default)"),
362 TWO_DASHES },
363 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
364 '\0', NULL, N_("Do not check section addresses for overlaps"),
365 TWO_DASHES },
366 { {"cref", no_argument, NULL, OPTION_CREF},
367 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
368 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
369 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
370 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
371 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
372 TWO_DASHES },
373 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
374 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
375 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
376 '\0', NULL, N_("Treat warnings as errors"),
377 TWO_DASHES },
378 { {"fini", required_argument, NULL, OPTION_FINI},
379 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
380 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
381 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
382 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
383 '\0', NULL, N_("Remove unused sections (on some targets)"),
384 TWO_DASHES },
385 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
386 '\0', NULL, N_("Don't remove unused sections (default)"),
387 TWO_DASHES },
388 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
389 '\0', NULL, N_("List removed unused sections on stderr"),
390 TWO_DASHES },
391 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
392 '\0', NULL, N_("Do not list removed unused sections"),
393 TWO_DASHES },
394 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
395 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
396 TWO_DASHES },
397 { {"help", no_argument, NULL, OPTION_HELP},
398 '\0', NULL, N_("Print option help"), TWO_DASHES },
399 { {"init", required_argument, NULL, OPTION_INIT},
400 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
401 { {"Map", required_argument, NULL, OPTION_MAP},
402 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
403 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
404 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
405 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
406 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
407 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
408 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
409 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
410 '\0', NULL, N_("Do not allow unresolved references in object files"),
411 TWO_DASHES },
412 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
413 '\0', NULL, N_("Allow unresolved references in shared libaries"),
414 TWO_DASHES },
415 { {"no-allow-shlib-undefined", no_argument, NULL,
416 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
417 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
418 TWO_DASHES },
419 { {"allow-multiple-definition", no_argument, NULL,
420 OPTION_ALLOW_MULTIPLE_DEFINITION},
421 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
422 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
423 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
424 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
425 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
426 { {"default-imported-symver", no_argument, NULL,
427 OPTION_DEFAULT_IMPORTED_SYMVER},
428 '\0', NULL, N_("Create default symbol version for imported symbols"),
429 TWO_DASHES },
430 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
431 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
432 { {"no-warn-search-mismatch", no_argument, NULL,
433 OPTION_NO_WARN_SEARCH_MISMATCH},
434 '\0', NULL, N_("Don't warn on finding an incompatible library"),
435 TWO_DASHES},
436 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
437 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
438 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
439 '\0', NULL, N_("Create an output file even if errors occur"),
440 TWO_DASHES },
441 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
442 '\0', NULL, NULL, NO_HELP },
443 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
444 '\0', NULL, N_("Only use library directories specified on\n"
445 "\t\t\t\tthe command line"), ONE_DASH },
446 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
447 '\0', N_("TARGET"), N_("Specify target of output file"),
448 EXACTLY_TWO_DASHES },
449 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
450 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
451 { {"reduce-memory-overheads", no_argument, NULL,
452 OPTION_REDUCE_MEMORY_OVERHEADS},
453 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
454 TWO_DASHES },
455 { {"relax", no_argument, NULL, OPTION_RELAX},
456 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
457 { {"retain-symbols-file", required_argument, NULL,
458 OPTION_RETAIN_SYMBOLS_FILE},
459 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
460 { {"rpath", required_argument, NULL, OPTION_RPATH},
461 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
462 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
463 '\0', N_("PATH"), N_("Set link time shared library search path"),
464 ONE_DASH },
465 { {"shared", no_argument, NULL, OPTION_SHARED},
466 '\0', NULL, N_("Create a shared library"), ONE_DASH },
467 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
468 '\0', NULL, NULL, ONE_DASH },
469 { {"pie", no_argument, NULL, OPTION_PIE},
470 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
471 { {"pic-executable", no_argument, NULL, OPTION_PIE},
472 '\0', NULL, NULL, TWO_DASHES },
473 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
474 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
475 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
476 '\0', NULL, NULL, NO_HELP },
477 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
478 '\0', N_("name|alignment"),
479 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
480 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
481 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
482 TWO_DASHES },
483 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
484 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
485 TWO_DASHES },
486 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
487 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
488 TWO_DASHES },
489 { {"stats", no_argument, NULL, OPTION_STATS},
490 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
491 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
492 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
493 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
494 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
495 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
496 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
497 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
498 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
499 TWO_DASHES },
500 { {"Tbss", required_argument, NULL, OPTION_TBSS},
501 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
502 { {"Tdata", required_argument, NULL, OPTION_TDATA},
503 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
504 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
505 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
506 { {"unresolved-symbols=<method>", required_argument, NULL,
507 OPTION_UNRESOLVED_SYMBOLS},
508 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
509 "\t\t\t\tignore-all, report-all, ignore-in-object-files,\n"
510 "\t\t\t\tignore-in-shared-libs"), TWO_DASHES },
511 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
512 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
513 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
514 '\0', NULL, NULL, NO_HELP },
515 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
516 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
517 { {"version-exports-section", required_argument, NULL,
518 OPTION_VERSION_EXPORTS_SECTION },
519 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
520 "\t\t\t\tSYMBOL as the version."), TWO_DASHES },
521 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
522 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
523 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
524 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
525 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
526 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
527 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
528 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
529 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
530 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
531 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
532 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
533 TWO_DASHES },
534 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
535 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
536 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
537 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
538 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
539 '\0', NULL, N_("Warn if start of section changes due to alignment"),
540 TWO_DASHES },
541 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
542 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
543 TWO_DASHES },
544 { {"warn-unresolved-symbols", no_argument, NULL,
545 OPTION_WARN_UNRESOLVED_SYMBOLS},
546 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
547 { {"error-unresolved-symbols", no_argument, NULL,
548 OPTION_ERROR_UNRESOLVED_SYMBOLS},
549 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
550 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
551 '\0', NULL, N_("Include all objects from following archives"),
552 TWO_DASHES },
553 { {"wrap", required_argument, NULL, OPTION_WRAP},
554 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
555 };
556
557 #define OPTION_COUNT ARRAY_SIZE (ld_options)
558
559 void
parse_args(unsigned argc,char ** argv)560 parse_args (unsigned argc, char **argv)
561 {
562 unsigned i;
563 int is, il, irl;
564 int ingroup = 0;
565 char *default_dirlist = NULL;
566 char *shortopts;
567 struct option *longopts;
568 struct option *really_longopts;
569 int last_optind;
570 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
571
572 shortopts = xmalloc (OPTION_COUNT * 3 + 2);
573 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
574 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
575
576 /* Starting the short option string with '-' is for programs that
577 expect options and other ARGV-elements in any order and that care about
578 the ordering of the two. We describe each non-option ARGV-element
579 as if it were the argument of an option with character code 1. */
580 shortopts[0] = '-';
581 is = 1;
582 il = 0;
583 irl = 0;
584 for (i = 0; i < OPTION_COUNT; i++)
585 {
586 if (ld_options[i].shortopt != '\0')
587 {
588 shortopts[is] = ld_options[i].shortopt;
589 ++is;
590 if (ld_options[i].opt.has_arg == required_argument
591 || ld_options[i].opt.has_arg == optional_argument)
592 {
593 shortopts[is] = ':';
594 ++is;
595 if (ld_options[i].opt.has_arg == optional_argument)
596 {
597 shortopts[is] = ':';
598 ++is;
599 }
600 }
601 }
602 if (ld_options[i].opt.name != NULL)
603 {
604 if (ld_options[i].control == EXACTLY_TWO_DASHES)
605 {
606 really_longopts[irl] = ld_options[i].opt;
607 ++irl;
608 }
609 else
610 {
611 longopts[il] = ld_options[i].opt;
612 ++il;
613 }
614 }
615 }
616 shortopts[is] = '\0';
617 longopts[il].name = NULL;
618 really_longopts[irl].name = NULL;
619
620 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
621
622 /* The -G option is ambiguous on different platforms. Sometimes it
623 specifies the largest data size to put into the small data
624 section. Sometimes it is equivalent to --shared. Unfortunately,
625 the first form takes an argument, while the second does not.
626
627 We need to permit the --shared form because on some platforms,
628 such as Solaris, gcc -shared will pass -G to the linker.
629
630 To permit either usage, we look through the argument list. If we
631 find -G not followed by a number, we change it into --shared.
632 This will work for most normal cases. */
633 for (i = 1; i < argc; i++)
634 if (strcmp (argv[i], "-G") == 0
635 && (i + 1 >= argc
636 || ! ISDIGIT (argv[i + 1][0])))
637 argv[i] = (char *) "--shared";
638
639 /* Because we permit long options to start with a single dash, and
640 we have a --library option, and the -l option is conventionally
641 used with an immediately following argument, we can have bad
642 results if somebody tries to use -l with a library whose name
643 happens to start with "ibrary", as in -li. We avoid problems by
644 simply turning -l into --library. This means that users will
645 have to use two dashes in order to use --library, which is OK
646 since that's how it is documented.
647
648 FIXME: It's possible that this problem can arise for other short
649 options as well, although the user does always have the recourse
650 of adding a space between the option and the argument. */
651 for (i = 1; i < argc; i++)
652 {
653 if (argv[i][0] == '-'
654 && argv[i][1] == 'l'
655 && argv[i][2] != '\0')
656 {
657 char *n;
658
659 n = xmalloc (strlen (argv[i]) + 20);
660 sprintf (n, "--library=%s", argv[i] + 2);
661 argv[i] = n;
662 }
663 }
664
665 last_optind = -1;
666 while (1)
667 {
668 int longind;
669 int optc;
670
671 /* Using last_optind lets us avoid calling ldemul_parse_args
672 multiple times on a single option, which would lead to
673 confusion in the internal static variables maintained by
674 getopt. This could otherwise happen for an argument like
675 -nx, in which the -n is parsed as a single option, and we
676 loop around to pick up the -x. */
677 if (optind != last_optind)
678 if (ldemul_parse_args (argc, argv))
679 continue;
680
681 /* getopt_long_only is like getopt_long, but '-' as well as '--'
682 can indicate a long option. */
683 opterr = 0;
684 last_optind = optind;
685 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
686 if (optc == '?')
687 {
688 optind = last_optind;
689 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
690 }
691
692 if (ldemul_handle_option (optc))
693 continue;
694
695 if (optc == -1)
696 break;
697
698 switch (optc)
699 {
700 case '?':
701 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
702 /* Fall through. */
703
704 default:
705 einfo (_("%P%F: use the --help option for usage information\n"));
706
707 case 1: /* File name. */
708 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
709 break;
710
711 case OPTION_IGNORE:
712 break;
713 case 'a':
714 /* For HP/UX compatibility. Actually -a shared should mean
715 ``use only shared libraries'' but, then, we don't
716 currently support shared libraries on HP/UX anyhow. */
717 if (strcmp (optarg, "archive") == 0)
718 config.dynamic_link = FALSE;
719 else if (strcmp (optarg, "shared") == 0
720 || strcmp (optarg, "default") == 0)
721 config.dynamic_link = TRUE;
722 else
723 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
724 break;
725 case OPTION_ASSERT:
726 /* FIXME: We just ignore these, but we should handle them. */
727 if (strcmp (optarg, "definitions") == 0)
728 ;
729 else if (strcmp (optarg, "nodefinitions") == 0)
730 ;
731 else if (strcmp (optarg, "nosymbolic") == 0)
732 ;
733 else if (strcmp (optarg, "pure-text") == 0)
734 ;
735 else
736 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
737 break;
738 case 'A':
739 ldfile_add_arch (optarg);
740 break;
741 case 'b':
742 lang_add_target (optarg);
743 break;
744 case 'c':
745 ldfile_open_command_file (optarg);
746 parser_input = input_mri_script;
747 yyparse ();
748 break;
749 case OPTION_CALL_SHARED:
750 config.dynamic_link = TRUE;
751 break;
752 case OPTION_NON_SHARED:
753 config.dynamic_link = FALSE;
754 break;
755 case OPTION_CREF:
756 command_line.cref = TRUE;
757 link_info.notice_all = TRUE;
758 break;
759 case 'd':
760 command_line.force_common_definition = TRUE;
761 break;
762 case OPTION_DEFSYM:
763 lex_string = optarg;
764 lex_redirect (optarg);
765 parser_input = input_defsym;
766 parsing_defsym = 1;
767 yyparse ();
768 parsing_defsym = 0;
769 lex_string = NULL;
770 break;
771 case OPTION_DEMANGLE:
772 demangling = TRUE;
773 if (optarg != NULL)
774 {
775 enum demangling_styles style;
776
777 style = cplus_demangle_name_to_style (optarg);
778 if (style == unknown_demangling)
779 einfo (_("%F%P: unknown demangling style `%s'"),
780 optarg);
781
782 cplus_demangle_set_style (style);
783 }
784 break;
785 case 'I': /* Used on Solaris. */
786 case OPTION_DYNAMIC_LINKER:
787 command_line.interpreter = optarg;
788 break;
789 case OPTION_SYSROOT:
790 /* Already handled in ldmain.c. */
791 break;
792 case OPTION_EB:
793 command_line.endian = ENDIAN_BIG;
794 break;
795 case OPTION_EL:
796 command_line.endian = ENDIAN_LITTLE;
797 break;
798 case OPTION_EMBEDDED_RELOCS:
799 command_line.embedded_relocs = TRUE;
800 break;
801 case OPTION_EXPORT_DYNAMIC:
802 case 'E': /* HP/UX compatibility. */
803 link_info.export_dynamic = TRUE;
804 break;
805 case 'e':
806 lang_add_entry (optarg, TRUE);
807 break;
808 case 'f':
809 if (command_line.auxiliary_filters == NULL)
810 {
811 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *));
812 command_line.auxiliary_filters[0] = optarg;
813 command_line.auxiliary_filters[1] = NULL;
814 }
815 else
816 {
817 int c;
818 char **p;
819
820 c = 0;
821 for (p = command_line.auxiliary_filters; *p != NULL; p++)
822 ++c;
823 command_line.auxiliary_filters
824 = xrealloc (command_line.auxiliary_filters,
825 (c + 2) * sizeof (char *));
826 command_line.auxiliary_filters[c] = optarg;
827 command_line.auxiliary_filters[c + 1] = NULL;
828 }
829 break;
830 case 'F':
831 command_line.filter_shlib = optarg;
832 break;
833 case OPTION_FORCE_EXE_SUFFIX:
834 command_line.force_exe_suffix = TRUE;
835 break;
836 case 'G':
837 {
838 char *end;
839 g_switch_value = strtoul (optarg, &end, 0);
840 if (*end)
841 einfo (_("%P%F: invalid number `%s'\n"), optarg);
842 }
843 break;
844 case 'g':
845 /* Ignore. */
846 break;
847 case OPTION_GC_SECTIONS:
848 link_info.gc_sections = TRUE;
849 break;
850 case OPTION_PRINT_GC_SECTIONS:
851 link_info.print_gc_sections = TRUE;
852 break;
853 case OPTION_HELP:
854 help ();
855 xexit (0);
856 break;
857 case 'L':
858 ldfile_add_library_path (optarg, TRUE);
859 break;
860 case 'l':
861 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
862 break;
863 case 'M':
864 config.map_filename = "-";
865 break;
866 case 'm':
867 /* Ignore. Was handled in a pre-parse. */
868 break;
869 case OPTION_MAP:
870 config.map_filename = optarg;
871 break;
872 case 'N':
873 config.text_read_only = FALSE;
874 config.magic_demand_paged = FALSE;
875 config.dynamic_link = FALSE;
876 break;
877 case OPTION_NO_OMAGIC:
878 config.text_read_only = TRUE;
879 config.magic_demand_paged = TRUE;
880 /* NB/ Does not set dynamic_link to TRUE.
881 Use --call-shared or -Bdynamic for this. */
882 break;
883 case 'n':
884 config.magic_demand_paged = FALSE;
885 config.dynamic_link = FALSE;
886 break;
887 case OPTION_NO_DEFINE_COMMON:
888 command_line.inhibit_common_definition = TRUE;
889 break;
890 case OPTION_NO_DEMANGLE:
891 demangling = FALSE;
892 break;
893 case OPTION_NO_GC_SECTIONS:
894 link_info.gc_sections = FALSE;
895 break;
896 case OPTION_NO_PRINT_GC_SECTIONS:
897 link_info.print_gc_sections = FALSE;
898 break;
899 case OPTION_NO_KEEP_MEMORY:
900 link_info.keep_memory = FALSE;
901 break;
902 case OPTION_NO_UNDEFINED:
903 link_info.unresolved_syms_in_objects
904 = how_to_report_unresolved_symbols;
905 break;
906 case OPTION_ALLOW_SHLIB_UNDEFINED:
907 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
908 break;
909 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
910 link_info.unresolved_syms_in_shared_libs
911 = how_to_report_unresolved_symbols;
912 break;
913 case OPTION_UNRESOLVED_SYMBOLS:
914 if (strcmp (optarg, "ignore-all") == 0)
915 {
916 link_info.unresolved_syms_in_objects = RM_IGNORE;
917 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
918 }
919 else if (strcmp (optarg, "report-all") == 0)
920 {
921 link_info.unresolved_syms_in_objects
922 = how_to_report_unresolved_symbols;
923 link_info.unresolved_syms_in_shared_libs
924 = how_to_report_unresolved_symbols;
925 }
926 else if (strcmp (optarg, "ignore-in-object-files") == 0)
927 {
928 link_info.unresolved_syms_in_objects = RM_IGNORE;
929 link_info.unresolved_syms_in_shared_libs
930 = how_to_report_unresolved_symbols;
931 }
932 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
933 {
934 link_info.unresolved_syms_in_objects
935 = how_to_report_unresolved_symbols;
936 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
937 }
938 else
939 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
940 break;
941 case OPTION_WARN_UNRESOLVED_SYMBOLS:
942 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
943 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
944 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
945 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
946 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
947 break;
948
949 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
950 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
951 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
952 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
953 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
954 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
955 break;
956 case OPTION_ALLOW_MULTIPLE_DEFINITION:
957 link_info.allow_multiple_definition = TRUE;
958 break;
959 case OPTION_NO_UNDEFINED_VERSION:
960 link_info.allow_undefined_version = FALSE;
961 break;
962 case OPTION_DEFAULT_SYMVER:
963 link_info.create_default_symver = TRUE;
964 break;
965 case OPTION_DEFAULT_IMPORTED_SYMVER:
966 link_info.default_imported_symver = TRUE;
967 break;
968 case OPTION_NO_WARN_MISMATCH:
969 command_line.warn_mismatch = FALSE;
970 break;
971 case OPTION_NO_WARN_SEARCH_MISMATCH:
972 command_line.warn_search_mismatch = FALSE;
973 break;
974 case OPTION_NOINHIBIT_EXEC:
975 force_make_executable = TRUE;
976 break;
977 case OPTION_NOSTDLIB:
978 config.only_cmd_line_lib_dirs = TRUE;
979 break;
980 case OPTION_NO_WHOLE_ARCHIVE:
981 whole_archive = FALSE;
982 break;
983 case 'O':
984 /* FIXME "-O<non-digits> <value>" used to set the address of
985 section <non-digits>. Was this for compatibility with
986 something, or can we create a new option to do that
987 (with a syntax similar to -defsym)?
988 getopt can't handle two args to an option without kludges. */
989
990 /* Enable optimizations of output files. */
991 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
992 break;
993 case 'o':
994 lang_add_output (optarg, 0);
995 break;
996 case OPTION_OFORMAT:
997 lang_add_output_format (optarg, NULL, NULL, 0);
998 break;
999 case 'q':
1000 link_info.emitrelocations = TRUE;
1001 break;
1002 case 'i':
1003 case 'r':
1004 if (optind == last_optind)
1005 /* This can happen if the user put "-rpath,a" on the command
1006 line. (Or something similar. The comma is important).
1007 Getopt becomes confused and thinks that this is a -r option
1008 but it cannot parse the text after the -r so it refuses to
1009 increment the optind counter. Detect this case and issue
1010 an error message here. We cannot just make this a warning,
1011 increment optind, and continue because getopt is too confused
1012 and will seg-fault the next time around. */
1013 einfo(_("%P%F: bad -rpath option\n"));
1014
1015 link_info.relocatable = TRUE;
1016 config.build_constructors = FALSE;
1017 config.magic_demand_paged = FALSE;
1018 config.text_read_only = FALSE;
1019 config.dynamic_link = FALSE;
1020 break;
1021 case 'R':
1022 /* The GNU linker traditionally uses -R to mean to include
1023 only the symbols from a file. The Solaris linker uses -R
1024 to set the path used by the runtime linker to find
1025 libraries. This is the GNU linker -rpath argument. We
1026 try to support both simultaneously by checking the file
1027 named. If it is a directory, rather than a regular file,
1028 we assume -rpath was meant. */
1029 {
1030 struct stat s;
1031
1032 if (stat (optarg, &s) >= 0
1033 && ! S_ISDIR (s.st_mode))
1034 {
1035 lang_add_input_file (optarg,
1036 lang_input_file_is_symbols_only_enum,
1037 NULL);
1038 break;
1039 }
1040 }
1041 /* Fall through. */
1042 case OPTION_RPATH:
1043 if (command_line.rpath == NULL)
1044 command_line.rpath = xstrdup (optarg);
1045 else
1046 {
1047 size_t rpath_len = strlen (command_line.rpath);
1048 size_t optarg_len = strlen (optarg);
1049 char *buf;
1050 char *cp = command_line.rpath;
1051
1052 /* First see whether OPTARG is already in the path. */
1053 do
1054 {
1055 if (strncmp (optarg, cp, optarg_len) == 0
1056 && (cp[optarg_len] == 0
1057 || cp[optarg_len] == config.rpath_separator))
1058 /* We found it. */
1059 break;
1060
1061 /* Not yet found. */
1062 cp = strchr (cp, config.rpath_separator);
1063 if (cp != NULL)
1064 ++cp;
1065 }
1066 while (cp != NULL);
1067
1068 if (cp == NULL)
1069 {
1070 buf = xmalloc (rpath_len + optarg_len + 2);
1071 sprintf (buf, "%s%c%s", command_line.rpath,
1072 config.rpath_separator, optarg);
1073 free (command_line.rpath);
1074 command_line.rpath = buf;
1075 }
1076 }
1077 break;
1078 case OPTION_RPATH_LINK:
1079 if (command_line.rpath_link == NULL)
1080 command_line.rpath_link = xstrdup (optarg);
1081 else
1082 {
1083 char *buf;
1084
1085 buf = xmalloc (strlen (command_line.rpath_link)
1086 + strlen (optarg)
1087 + 2);
1088 sprintf (buf, "%s%c%s", command_line.rpath_link,
1089 config.rpath_separator, optarg);
1090 free (command_line.rpath_link);
1091 command_line.rpath_link = buf;
1092 }
1093 break;
1094 case OPTION_RELAX:
1095 command_line.relax = TRUE;
1096 break;
1097 case OPTION_RETAIN_SYMBOLS_FILE:
1098 add_keepsyms_file (optarg);
1099 break;
1100 case 'S':
1101 link_info.strip = strip_debugger;
1102 break;
1103 case 's':
1104 link_info.strip = strip_all;
1105 break;
1106 case OPTION_STRIP_DISCARDED:
1107 link_info.strip_discarded = TRUE;
1108 break;
1109 case OPTION_NO_STRIP_DISCARDED:
1110 link_info.strip_discarded = FALSE;
1111 break;
1112 case OPTION_SHARED:
1113 if (config.has_shared)
1114 {
1115 link_info.shared = TRUE;
1116 /* When creating a shared library, the default
1117 behaviour is to ignore any unresolved references. */
1118 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1119 link_info.unresolved_syms_in_objects = RM_IGNORE;
1120 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1121 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1122 }
1123 else
1124 einfo (_("%P%F: -shared not supported\n"));
1125 break;
1126 case OPTION_PIE:
1127 if (config.has_shared)
1128 {
1129 link_info.shared = TRUE;
1130 link_info.pie = TRUE;
1131 }
1132 else
1133 einfo (_("%P%F: -pie not supported\n"));
1134 break;
1135 case 'h': /* Used on Solaris. */
1136 case OPTION_SONAME:
1137 command_line.soname = optarg;
1138 break;
1139 case OPTION_SORT_COMMON:
1140 config.sort_common = TRUE;
1141 break;
1142 case OPTION_SORT_SECTION:
1143 if (strcmp (optarg, N_("name")) == 0)
1144 sort_section = by_name;
1145 else if (strcmp (optarg, N_("alignment")) == 0)
1146 sort_section = by_alignment;
1147 else
1148 einfo (_("%P%F: invalid section sorting option: %s\n"),
1149 optarg);
1150 break;
1151 case OPTION_STATS:
1152 config.stats = TRUE;
1153 break;
1154 case OPTION_SYMBOLIC:
1155 command_line.symbolic = symbolic;
1156 break;
1157 case OPTION_SYMBOLIC_FUNCTIONS:
1158 command_line.symbolic = symbolic_functions;
1159 break;
1160 case 't':
1161 trace_files = TRUE;
1162 break;
1163 case 'T':
1164 ldfile_open_command_file (optarg);
1165 parser_input = input_script;
1166 yyparse ();
1167 break;
1168 case OPTION_DEFAULT_SCRIPT:
1169 command_line.default_script = optarg;
1170 break;
1171 case OPTION_SECTION_START:
1172 {
1173 char *optarg2;
1174 char *sec_name;
1175 int len;
1176
1177 /* Check for <something>=<somthing>... */
1178 optarg2 = strchr (optarg, '=');
1179 if (optarg2 == NULL)
1180 einfo (_("%P%F: invalid argument to option"
1181 " \"--section-start\"\n"));
1182
1183 optarg2++;
1184
1185 /* So far so good. Are all the args present? */
1186 if ((*optarg == '\0') || (*optarg2 == '\0'))
1187 einfo (_("%P%F: missing argument(s) to option"
1188 " \"--section-start\"\n"));
1189
1190 /* We must copy the section name as set_section_start
1191 doesn't do it for us. */
1192 len = optarg2 - optarg;
1193 sec_name = xmalloc (len);
1194 memcpy (sec_name, optarg, len - 1);
1195 sec_name[len - 1] = 0;
1196
1197 /* Then set it... */
1198 set_section_start (sec_name, optarg2);
1199 }
1200 break;
1201 case OPTION_TARGET_HELP:
1202 /* Mention any target specific options. */
1203 ldemul_list_emulation_options (stdout);
1204 exit (0);
1205 case OPTION_TBSS:
1206 set_segment_start (".bss", optarg);
1207 break;
1208 case OPTION_TDATA:
1209 set_segment_start (".data", optarg);
1210 break;
1211 case OPTION_TTEXT:
1212 set_segment_start (".text", optarg);
1213 break;
1214 case OPTION_TRADITIONAL_FORMAT:
1215 link_info.traditional_format = TRUE;
1216 break;
1217 case OPTION_TASK_LINK:
1218 link_info.task_link = TRUE;
1219 /* Fall through - do an implied -r option. */
1220 case OPTION_UR:
1221 link_info.relocatable = TRUE;
1222 config.build_constructors = TRUE;
1223 config.magic_demand_paged = FALSE;
1224 config.text_read_only = FALSE;
1225 config.dynamic_link = FALSE;
1226 break;
1227 case 'u':
1228 ldlang_add_undef (optarg);
1229 break;
1230 case OPTION_UNIQUE:
1231 if (optarg != NULL)
1232 lang_add_unique (optarg);
1233 else
1234 config.unique_orphan_sections = TRUE;
1235 break;
1236 case OPTION_VERBOSE:
1237 ldversion (1);
1238 version_printed = TRUE;
1239 trace_file_tries = TRUE;
1240 overflow_cutoff_limit = -2;
1241 break;
1242 case 'v':
1243 ldversion (0);
1244 version_printed = TRUE;
1245 break;
1246 case 'V':
1247 ldversion (1);
1248 version_printed = TRUE;
1249 break;
1250 case OPTION_VERSION:
1251 ldversion (2);
1252 xexit (0);
1253 break;
1254 case OPTION_VERSION_SCRIPT:
1255 /* This option indicates a small script that only specifies
1256 version information. Read it, but don't assume that
1257 we've seen a linker script. */
1258 {
1259 FILE *hold_script_handle;
1260
1261 hold_script_handle = saved_script_handle;
1262 ldfile_open_command_file (optarg);
1263 saved_script_handle = hold_script_handle;
1264 parser_input = input_version_script;
1265 yyparse ();
1266 }
1267 break;
1268 case OPTION_VERSION_EXPORTS_SECTION:
1269 /* This option records a version symbol to be applied to the
1270 symbols listed for export to be found in the object files
1271 .exports sections. */
1272 command_line.version_exports_section = optarg;
1273 break;
1274 case OPTION_DYNAMIC_LIST_DATA:
1275 command_line.dynamic_list = dynamic_list_data;
1276 if (command_line.symbolic == symbolic)
1277 command_line.symbolic = symbolic_unset;
1278 break;
1279 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1280 lang_append_dynamic_list_cpp_typeinfo ();
1281 if (command_line.dynamic_list != dynamic_list_data)
1282 command_line.dynamic_list = dynamic_list;
1283 if (command_line.symbolic == symbolic)
1284 command_line.symbolic = symbolic_unset;
1285 break;
1286 case OPTION_DYNAMIC_LIST_CPP_NEW:
1287 lang_append_dynamic_list_cpp_new ();
1288 if (command_line.dynamic_list != dynamic_list_data)
1289 command_line.dynamic_list = dynamic_list;
1290 if (command_line.symbolic == symbolic)
1291 command_line.symbolic = symbolic_unset;
1292 break;
1293 case OPTION_DYNAMIC_LIST:
1294 /* This option indicates a small script that only specifies
1295 a dynamic list. Read it, but don't assume that we've
1296 seen a linker script. */
1297 {
1298 FILE *hold_script_handle;
1299
1300 hold_script_handle = saved_script_handle;
1301 ldfile_open_command_file (optarg);
1302 saved_script_handle = hold_script_handle;
1303 parser_input = input_dynamic_list;
1304 yyparse ();
1305 }
1306 if (command_line.dynamic_list != dynamic_list_data)
1307 command_line.dynamic_list = dynamic_list;
1308 if (command_line.symbolic == symbolic)
1309 command_line.symbolic = symbolic_unset;
1310 break;
1311 case OPTION_WARN_COMMON:
1312 config.warn_common = TRUE;
1313 break;
1314 case OPTION_WARN_CONSTRUCTORS:
1315 config.warn_constructors = TRUE;
1316 break;
1317 case OPTION_WARN_FATAL:
1318 config.fatal_warnings = TRUE;
1319 break;
1320 case OPTION_WARN_MULTIPLE_GP:
1321 config.warn_multiple_gp = TRUE;
1322 break;
1323 case OPTION_WARN_ONCE:
1324 config.warn_once = TRUE;
1325 break;
1326 case OPTION_WARN_SECTION_ALIGN:
1327 config.warn_section_align = TRUE;
1328 break;
1329 case OPTION_WARN_SHARED_TEXTREL:
1330 link_info.warn_shared_textrel = TRUE;
1331 break;
1332 case OPTION_WHOLE_ARCHIVE:
1333 whole_archive = TRUE;
1334 break;
1335 case OPTION_ADD_NEEDED:
1336 add_needed = TRUE;
1337 break;
1338 case OPTION_NO_ADD_NEEDED:
1339 add_needed = FALSE;
1340 break;
1341 case OPTION_AS_NEEDED:
1342 /* XXX: --as-needed is broken on powerpc64 */
1343 #ifndef __powerpc64__
1344 as_needed = TRUE;
1345 break;
1346 #endif
1347 case OPTION_NO_AS_NEEDED:
1348 as_needed = FALSE;
1349 break;
1350 case OPTION_WRAP:
1351 add_wrap (optarg);
1352 break;
1353 case OPTION_DISCARD_NONE:
1354 link_info.discard = discard_none;
1355 break;
1356 case 'X':
1357 link_info.discard = discard_l;
1358 break;
1359 case 'x':
1360 link_info.discard = discard_all;
1361 break;
1362 case 'Y':
1363 if (CONST_STRNEQ (optarg, "P,"))
1364 optarg += 2;
1365 if (default_dirlist != NULL)
1366 free (default_dirlist);
1367 default_dirlist = xstrdup (optarg);
1368 break;
1369 case 'y':
1370 add_ysym (optarg);
1371 break;
1372 case OPTION_SPARE_DYNAMIC_TAGS:
1373 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1374 break;
1375 case OPTION_SPLIT_BY_RELOC:
1376 if (optarg != NULL)
1377 config.split_by_reloc = strtoul (optarg, NULL, 0);
1378 else
1379 config.split_by_reloc = 32768;
1380 break;
1381 case OPTION_SPLIT_BY_FILE:
1382 if (optarg != NULL)
1383 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1384 else
1385 config.split_by_file = 1;
1386 break;
1387 case OPTION_CHECK_SECTIONS:
1388 command_line.check_section_addresses = TRUE;
1389 break;
1390 case OPTION_NO_CHECK_SECTIONS:
1391 command_line.check_section_addresses = FALSE;
1392 break;
1393 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1394 command_line.accept_unknown_input_arch = TRUE;
1395 break;
1396 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1397 command_line.accept_unknown_input_arch = FALSE;
1398 break;
1399 case '(':
1400 if (ingroup)
1401 einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1402
1403 lang_enter_group ();
1404 ingroup = 1;
1405 break;
1406 case ')':
1407 if (! ingroup)
1408 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1409
1410 lang_leave_group ();
1411 ingroup = 0;
1412 break;
1413
1414 case OPTION_INIT:
1415 link_info.init_function = optarg;
1416 break;
1417
1418 case OPTION_FINI:
1419 link_info.fini_function = optarg;
1420 break;
1421
1422 case OPTION_REDUCE_MEMORY_OVERHEADS:
1423 link_info.reduce_memory_overheads = TRUE;
1424 if (config.hash_table_size == 0)
1425 config.hash_table_size = 1021;
1426 break;
1427
1428 case OPTION_HASH_SIZE:
1429 {
1430 bfd_size_type new_size;
1431
1432 new_size = strtoul (optarg, NULL, 0);
1433 if (new_size)
1434 config.hash_table_size = new_size;
1435 else
1436 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1437 }
1438 break;
1439 }
1440 }
1441
1442 if (ingroup)
1443 lang_leave_group ();
1444
1445 if (default_dirlist != NULL)
1446 {
1447 set_default_dirlist (default_dirlist);
1448 free (default_dirlist);
1449 }
1450
1451 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1452 /* FIXME: Should we allow emulations a chance to set this ? */
1453 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1454
1455 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1456 /* FIXME: Should we allow emulations a chance to set this ? */
1457 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1458 }
1459
1460 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1461 library search path. */
1462
1463 static void
set_default_dirlist(char * dirlist_ptr)1464 set_default_dirlist (char *dirlist_ptr)
1465 {
1466 char *p;
1467
1468 while (1)
1469 {
1470 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1471 if (p != NULL)
1472 *p = '\0';
1473 if (*dirlist_ptr != '\0')
1474 ldfile_add_library_path (dirlist_ptr, TRUE);
1475 if (p == NULL)
1476 break;
1477 dirlist_ptr = p + 1;
1478 }
1479 }
1480
1481 static void
set_section_start(char * sect,char * valstr)1482 set_section_start (char *sect, char *valstr)
1483 {
1484 const char *end;
1485 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1486 if (*end)
1487 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1488 lang_section_start (sect, exp_intop (val), NULL);
1489 }
1490
1491 static void
set_segment_start(const char * section,char * valstr)1492 set_segment_start (const char *section, char *valstr)
1493 {
1494 const char *name;
1495 const char *end;
1496 segment_type *seg;
1497
1498 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1499 if (*end)
1500 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1501 /* If we already have an entry for this segment, update the existing
1502 value. */
1503 name = section + 1;
1504 for (seg = segments; seg; seg = seg->next)
1505 if (strcmp (seg->name, name) == 0)
1506 {
1507 seg->value = val;
1508 return;
1509 }
1510 /* There was no existing value so we must create a new segment
1511 entry. */
1512 seg = stat_alloc (sizeof (*seg));
1513 seg->name = name;
1514 seg->value = val;
1515 seg->used = FALSE;
1516 /* Add it to the linked list of segments. */
1517 seg->next = segments;
1518 segments = seg;
1519 /* Historically, -Ttext and friends set the base address of a
1520 particular section. For backwards compatibility, we still do
1521 that. If a SEGMENT_START directive is seen, the section address
1522 assignment will be disabled. */
1523 lang_section_start (section, exp_intop (val), seg);
1524 }
1525
1526
1527 /* Print help messages for the options. */
1528
1529 static void
help(void)1530 help (void)
1531 {
1532 unsigned i;
1533 const char **targets, **pp;
1534 int len;
1535
1536 printf (_("Usage: %s [options] file...\n"), program_name);
1537
1538 printf (_("Options:\n"));
1539 for (i = 0; i < OPTION_COUNT; i++)
1540 {
1541 if (ld_options[i].doc != NULL)
1542 {
1543 bfd_boolean comma;
1544 unsigned j;
1545
1546 printf (" ");
1547
1548 comma = FALSE;
1549 len = 2;
1550
1551 j = i;
1552 do
1553 {
1554 if (ld_options[j].shortopt != '\0'
1555 && ld_options[j].control != NO_HELP)
1556 {
1557 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1558 len += (comma ? 2 : 0) + 2;
1559 if (ld_options[j].arg != NULL)
1560 {
1561 if (ld_options[j].opt.has_arg != optional_argument)
1562 {
1563 printf (" ");
1564 ++len;
1565 }
1566 printf ("%s", _(ld_options[j].arg));
1567 len += strlen (_(ld_options[j].arg));
1568 }
1569 comma = TRUE;
1570 }
1571 ++j;
1572 }
1573 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1574
1575 j = i;
1576 do
1577 {
1578 if (ld_options[j].opt.name != NULL
1579 && ld_options[j].control != NO_HELP)
1580 {
1581 int two_dashes =
1582 (ld_options[j].control == TWO_DASHES
1583 || ld_options[j].control == EXACTLY_TWO_DASHES);
1584
1585 printf ("%s-%s%s",
1586 comma ? ", " : "",
1587 two_dashes ? "-" : "",
1588 ld_options[j].opt.name);
1589 len += ((comma ? 2 : 0)
1590 + 1
1591 + (two_dashes ? 1 : 0)
1592 + strlen (ld_options[j].opt.name));
1593 if (ld_options[j].arg != NULL)
1594 {
1595 printf (" %s", _(ld_options[j].arg));
1596 len += 1 + strlen (_(ld_options[j].arg));
1597 }
1598 comma = TRUE;
1599 }
1600 ++j;
1601 }
1602 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1603
1604 if (len >= 30)
1605 {
1606 printf ("\n");
1607 len = 0;
1608 }
1609
1610 for (; len < 30; len++)
1611 putchar (' ');
1612
1613 printf ("%s\n", _(ld_options[i].doc));
1614 }
1615 }
1616 printf (_(" @FILE"));
1617 for (len = strlen (" @FILE"); len < 30; len++)
1618 putchar (' ');
1619 printf (_("Read options from FILE\n"));
1620
1621 /* Note: Various tools (such as libtool) depend upon the
1622 format of the listings below - do not change them. */
1623 /* xgettext:c-format */
1624 printf (_("%s: supported targets:"), program_name);
1625 targets = bfd_target_list ();
1626 for (pp = targets; *pp != NULL; pp++)
1627 printf (" %s", *pp);
1628 free (targets);
1629 printf ("\n");
1630
1631 /* xgettext:c-format */
1632 printf (_("%s: supported emulations: "), program_name);
1633 ldemul_list_emulations (stdout);
1634 printf ("\n");
1635
1636 /* xgettext:c-format */
1637 printf (_("%s: emulation specific options:\n"), program_name);
1638 ldemul_list_emulation_options (stdout);
1639 printf ("\n");
1640
1641 if (REPORT_BUGS_TO[0])
1642 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1643 }
1644