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