fixes for host gcc 4.6.1
[zpugcc/jano.git] / toolchain / binutils / ld / lexsup.c
blobb377bd4c7c27021c5d8c9e2f736cfb1d94abc14a
1 /* Parse options for the GNU linker.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004
4 Free Software Foundation, Inc.
6 This file is part of GLD, the Gnu Linker.
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.
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.
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, 59 Temple Place - Suite 330, Boston, MA
21 02111-1307, USA. */
23 #include "bfd.h"
24 #include "sysdep.h"
25 #include "libiberty.h"
26 #include <stdio.h>
27 #include <string.h>
28 #include "safe-ctype.h"
29 #include "getopt.h"
30 #include "bfdlink.h"
31 #include "ld.h"
32 #include "ldmain.h"
33 #include "ldmisc.h"
34 #include "ldexp.h"
35 #include "ldlang.h"
36 #include <ldgram.h>
37 #include "ldlex.h"
38 #include "ldfile.h"
39 #include "ldver.h"
40 #include "ldemul.h"
41 #include "demangle.h"
43 #ifndef PATH_SEPARATOR
44 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
45 #define PATH_SEPARATOR ';'
46 #else
47 #define PATH_SEPARATOR ':'
48 #endif
49 #endif
51 /* Somewhere above, sys/stat.h got included . . . . */
52 #if !defined(S_ISDIR) && defined(S_IFDIR)
53 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
54 #endif
56 static void set_default_dirlist (char *);
57 static void set_section_start (char *, char *);
58 static void help (void);
60 /* Non-zero if we are processing a --defsym from the command line. */
61 int parsing_defsym = 0;
63 /* Codes used for the long options with no short synonyms. 150 isn't
64 special; it's just an arbitrary non-ASCII char value. */
65 enum option_values
67 OPTION_ASSERT = 150,
68 OPTION_CALL_SHARED,
69 OPTION_CREF,
70 OPTION_DEFSYM,
71 OPTION_DEMANGLE,
72 OPTION_DYNAMIC_LINKER,
73 OPTION_EB,
74 OPTION_EL,
75 OPTION_EMBEDDED_RELOCS,
76 OPTION_EXPORT_DYNAMIC,
77 OPTION_HELP,
78 OPTION_IGNORE,
79 OPTION_MAP,
80 OPTION_NO_DEMANGLE,
81 OPTION_NO_KEEP_MEMORY,
82 OPTION_NO_WARN_MISMATCH,
83 OPTION_NOINHIBIT_EXEC,
84 OPTION_NON_SHARED,
85 OPTION_NO_WHOLE_ARCHIVE,
86 OPTION_OFORMAT,
87 OPTION_RELAX,
88 OPTION_RETAIN_SYMBOLS_FILE,
89 OPTION_RPATH,
90 OPTION_RPATH_LINK,
91 OPTION_SHARED,
92 OPTION_SONAME,
93 OPTION_SORT_COMMON,
94 OPTION_STATS,
95 OPTION_SYMBOLIC,
96 OPTION_TASK_LINK,
97 OPTION_TBSS,
98 OPTION_TDATA,
99 OPTION_TTEXT,
100 OPTION_TRADITIONAL_FORMAT,
101 OPTION_UR,
102 OPTION_VERBOSE,
103 OPTION_VERSION,
104 OPTION_VERSION_SCRIPT,
105 OPTION_VERSION_EXPORTS_SECTION,
106 OPTION_WARN_COMMON,
107 OPTION_WARN_CONSTRUCTORS,
108 OPTION_WARN_FATAL,
109 OPTION_WARN_MULTIPLE_GP,
110 OPTION_WARN_ONCE,
111 OPTION_WARN_SECTION_ALIGN,
112 OPTION_SPLIT_BY_RELOC,
113 OPTION_SPLIT_BY_FILE ,
114 OPTION_WHOLE_ARCHIVE,
115 OPTION_AS_NEEDED,
116 OPTION_NO_AS_NEEDED,
117 OPTION_WRAP,
118 OPTION_FORCE_EXE_SUFFIX,
119 OPTION_GC_SECTIONS,
120 OPTION_NO_GC_SECTIONS,
121 OPTION_CHECK_SECTIONS,
122 OPTION_NO_CHECK_SECTIONS,
123 OPTION_NO_UNDEFINED,
124 OPTION_INIT,
125 OPTION_FINI,
126 OPTION_SECTION_START,
127 OPTION_UNIQUE,
128 OPTION_TARGET_HELP,
129 OPTION_ALLOW_SHLIB_UNDEFINED,
130 OPTION_NO_ALLOW_SHLIB_UNDEFINED,
131 OPTION_ALLOW_MULTIPLE_DEFINITION,
132 OPTION_NO_UNDEFINED_VERSION,
133 OPTION_DISCARD_NONE,
134 OPTION_SPARE_DYNAMIC_TAGS,
135 OPTION_NO_DEFINE_COMMON,
136 OPTION_NOSTDLIB,
137 OPTION_NO_OMAGIC,
138 OPTION_STRIP_DISCARDED,
139 OPTION_NO_STRIP_DISCARDED,
140 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
141 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
142 OPTION_PIE,
143 OPTION_UNRESOLVED_SYMBOLS,
144 OPTION_WARN_UNRESOLVED_SYMBOLS,
145 OPTION_ERROR_UNRESOLVED_SYMBOLS
148 /* The long options. This structure is used for both the option
149 parsing and the help text. */
151 struct ld_option
153 /* The long option information. */
154 struct option opt;
155 /* The short option with the same meaning ('\0' if none). */
156 char shortopt;
157 /* The name of the argument (NULL if none). */
158 const char *arg;
159 /* The documentation string. If this is NULL, this is a synonym for
160 the previous option. */
161 const char *doc;
162 enum {
163 /* Use one dash before long option name. */
164 ONE_DASH,
165 /* Use two dashes before long option name. */
166 TWO_DASHES,
167 /* Only accept two dashes before the long option name.
168 This is an overloading of the use of this enum, since originally it
169 was only intended to tell the --help display function how to display
170 the long option name. This feature was added in order to resolve
171 the confusion about the -omagic command line switch. Is it setting
172 the output file name to "magic" or is it setting the NMAGIC flag on
173 the output ? It has been decided that it is setting the output file
174 name, and that if you want to set the NMAGIC flag you should use -N
175 or --omagic. */
176 EXACTLY_TWO_DASHES,
177 /* Don't mention this option in --help output. */
178 NO_HELP
179 } control;
182 static const struct ld_option ld_options[] =
184 { {NULL, required_argument, NULL, '\0'},
185 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
186 ONE_DASH },
187 { {"architecture", required_argument, NULL, 'A'},
188 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
189 { {"format", required_argument, NULL, 'b'},
190 'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES },
191 { {"mri-script", required_argument, NULL, 'c'},
192 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
193 { {"dc", no_argument, NULL, 'd'},
194 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
195 { {"dp", no_argument, NULL, 'd'},
196 '\0', NULL, NULL, ONE_DASH },
197 { {"entry", required_argument, NULL, 'e'},
198 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
199 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
200 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
201 { {"EB", no_argument, NULL, OPTION_EB},
202 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
203 { {"EL", no_argument, NULL, OPTION_EL},
204 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
205 { {"auxiliary", required_argument, NULL, 'f'},
206 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
207 TWO_DASHES },
208 { {"filter", required_argument, NULL, 'F'},
209 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES },
210 { {NULL, no_argument, NULL, '\0'},
211 'g', NULL, N_("Ignored"), ONE_DASH },
212 { {"gpsize", required_argument, NULL, 'G'},
213 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
214 TWO_DASHES },
215 { {"soname", required_argument, NULL, OPTION_SONAME},
216 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
217 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
218 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), TWO_DASHES },
219 { {"library", required_argument, NULL, 'l'},
220 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
221 { {"library-path", required_argument, NULL, 'L'},
222 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES },
223 { {NULL, required_argument, NULL, '\0'},
224 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
225 { {"print-map", no_argument, NULL, 'M'},
226 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
227 { {"nmagic", no_argument, NULL, 'n'},
228 'n', NULL, N_("Do not page align data"), TWO_DASHES },
229 { {"omagic", no_argument, NULL, 'N'},
230 'N', NULL, N_("Do not page align data, do not make text readonly"),
231 EXACTLY_TWO_DASHES },
232 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
233 '\0', NULL, N_("Page align data, make text readonly"), EXACTLY_TWO_DASHES },
234 { {"output", required_argument, NULL, 'o'},
235 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
236 { {NULL, required_argument, NULL, '\0'},
237 'O', NULL, N_("Optimize output file"), ONE_DASH },
238 { {"Qy", no_argument, NULL, OPTION_IGNORE},
239 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
240 { {"emit-relocs", no_argument, NULL, 'q'},
241 'q', NULL, "Generate relocations in final output", TWO_DASHES },
242 { {"relocatable", no_argument, NULL, 'r'},
243 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
244 { {NULL, no_argument, NULL, '\0'},
245 'i', NULL, NULL, ONE_DASH },
246 { {"just-symbols", required_argument, NULL, 'R'},
247 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
248 TWO_DASHES },
249 { {"strip-all", no_argument, NULL, 's'},
250 's', NULL, N_("Strip all symbols"), TWO_DASHES },
251 { {"strip-debug", no_argument, NULL, 'S'},
252 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
253 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
254 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
255 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
256 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
257 { {"trace", no_argument, NULL, 't'},
258 't', NULL, N_("Trace file opens"), TWO_DASHES },
259 { {"script", required_argument, NULL, 'T'},
260 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
261 { {"undefined", required_argument, NULL, 'u'},
262 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES },
263 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
264 '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
265 { {"Ur", no_argument, NULL, OPTION_UR},
266 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
267 { {"version", no_argument, NULL, OPTION_VERSION},
268 'v', NULL, N_("Print version information"), TWO_DASHES },
269 { {NULL, no_argument, NULL, '\0'},
270 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
271 { {"discard-all", no_argument, NULL, 'x'},
272 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
273 { {"discard-locals", no_argument, NULL, 'X'},
274 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
275 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
276 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
277 { {"trace-symbol", required_argument, NULL, 'y'},
278 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
279 { {NULL, required_argument, NULL, '\0'},
280 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH },
281 { {"start-group", no_argument, NULL, '('},
282 '(', NULL, N_("Start a group"), TWO_DASHES },
283 { {"end-group", no_argument, NULL, ')'},
284 ')', NULL, N_("End a group"), TWO_DASHES },
285 { {"accept-unknown-input-arch", no_argument, NULL, OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
286 '\0', NULL, N_("Accept input files whose architecture cannot be determined"), TWO_DASHES },
287 { {"no-accept-unknown-input-arch", no_argument, NULL, OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
288 '\0', NULL, N_("Reject input files whose architecture is unknown"), TWO_DASHES },
289 { {"assert", required_argument, NULL, OPTION_ASSERT},
290 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
291 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
292 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
293 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
294 '\0', NULL, NULL, ONE_DASH },
295 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
296 '\0', NULL, NULL, ONE_DASH },
297 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
298 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
299 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
300 '\0', NULL, NULL, ONE_DASH },
301 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
302 '\0', NULL, NULL, ONE_DASH },
303 { {"static", no_argument, NULL, OPTION_NON_SHARED},
304 '\0', NULL, NULL, ONE_DASH },
305 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
306 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
307 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
308 '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
309 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
310 '\0', NULL, N_("Do not check section addresses for overlaps"),
311 TWO_DASHES },
312 { {"cref", no_argument, NULL, OPTION_CREF},
313 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
314 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
315 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
316 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
317 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES },
318 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
319 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
320 { {"fini", required_argument, NULL, OPTION_FINI},
321 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
322 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
323 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
324 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
325 '\0', NULL, N_("Remove unused sections (on some targets)"),
326 TWO_DASHES },
327 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
328 '\0', NULL, N_("Don't remove unused sections (default)"),
329 TWO_DASHES },
330 { {"help", no_argument, NULL, OPTION_HELP},
331 '\0', NULL, N_("Print option help"), TWO_DASHES },
332 { {"init", required_argument, NULL, OPTION_INIT},
333 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
334 { {"Map", required_argument, NULL, OPTION_MAP},
335 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
336 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
337 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
338 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
339 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
340 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
341 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
342 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
343 '\0', NULL, N_("Do not allow unresolved references in object files"), TWO_DASHES },
344 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
345 '\0', NULL, N_("Allow unresolved references in shared libaries"), TWO_DASHES },
346 { {"no-allow-shlib-undefined", no_argument, NULL, OPTION_NO_ALLOW_SHLIB_UNDEFINED},
347 '\0', NULL, N_("Do not allow unresolved references in shared libs"), TWO_DASHES },
348 { {"allow-multiple-definition", no_argument, NULL, OPTION_ALLOW_MULTIPLE_DEFINITION},
349 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
350 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
351 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
352 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
353 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
354 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
355 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
356 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
357 '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
358 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
359 '\0', NULL, NULL, NO_HELP },
360 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
361 '\0', NULL, N_("Only use library directories specified on\n\t\t\t\tthe command line"), ONE_DASH },
362 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
363 '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES },
364 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
365 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
366 { {"relax", no_argument, NULL, OPTION_RELAX},
367 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
368 { {"retain-symbols-file", required_argument, NULL,
369 OPTION_RETAIN_SYMBOLS_FILE},
370 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
371 { {"rpath", required_argument, NULL, OPTION_RPATH},
372 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
373 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
374 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
375 { {"shared", no_argument, NULL, OPTION_SHARED},
376 '\0', NULL, N_("Create a shared library"), ONE_DASH },
377 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
378 '\0', NULL, NULL, ONE_DASH },
379 { {"pie", no_argument, NULL, OPTION_PIE},
380 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
381 { {"pic-executable", no_argument, NULL, OPTION_PIE},
382 '\0', NULL, NULL, TWO_DASHES },
383 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
384 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
385 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
386 '\0', NULL, NULL, NO_HELP },
387 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
388 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), TWO_DASHES },
389 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
390 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES },
391 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
392 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
393 { {"stats", no_argument, NULL, OPTION_STATS},
394 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
395 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
396 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
397 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
398 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
399 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
400 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
401 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
402 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
403 { {"Tbss", required_argument, NULL, OPTION_TBSS},
404 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
405 { {"Tdata", required_argument, NULL, OPTION_TDATA},
406 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
407 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
408 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
409 { {"unresolved-symbols=<method>", required_argument, NULL, OPTION_UNRESOLVED_SYMBOLS},
410 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n\t\t\t\tignore-all, report-all, ignore-in-object-files,\n\t\t\t\tignore-in-shared-libs"),
411 TWO_DASHES },
412 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
413 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
414 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
415 '\0', NULL, NULL, NO_HELP },
416 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
417 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
418 { {"version-exports-section", required_argument, NULL,
419 OPTION_VERSION_EXPORTS_SECTION },
420 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
421 TWO_DASHES },
422 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
423 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
424 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
425 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
426 TWO_DASHES },
427 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
428 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
429 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
430 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
431 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
432 '\0', NULL, N_("Warn if start of section changes due to alignment"),
433 TWO_DASHES },
434 { {"warn-unresolved-symbols", no_argument, NULL, OPTION_WARN_UNRESOLVED_SYMBOLS},
435 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
436 { {"error-unresolved-symbols", no_argument, NULL, OPTION_ERROR_UNRESOLVED_SYMBOLS},
437 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
438 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
439 '\0', NULL, N_("Treat warnings as errors"),
440 TWO_DASHES },
441 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
442 '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
443 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED},
444 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), TWO_DASHES },
445 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED},
446 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"), TWO_DASHES },
447 { {"wrap", required_argument, NULL, OPTION_WRAP},
448 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }
451 #define OPTION_COUNT ARRAY_SIZE (ld_options)
453 void
454 parse_args (unsigned argc, char **argv)
456 unsigned i;
457 int is, il, irl;
458 int ingroup = 0;
459 char *default_dirlist = NULL;
460 char *shortopts;
461 struct option *longopts;
462 struct option *really_longopts;
463 int last_optind;
464 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
466 shortopts = xmalloc (OPTION_COUNT * 3 + 2);
467 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
468 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
470 /* Starting the short option string with '-' is for programs that
471 expect options and other ARGV-elements in any order and that care about
472 the ordering of the two. We describe each non-option ARGV-element
473 as if it were the argument of an option with character code 1. */
474 shortopts[0] = '-';
475 is = 1;
476 il = 0;
477 irl = 0;
478 for (i = 0; i < OPTION_COUNT; i++)
480 if (ld_options[i].shortopt != '\0')
482 shortopts[is] = ld_options[i].shortopt;
483 ++is;
484 if (ld_options[i].opt.has_arg == required_argument
485 || ld_options[i].opt.has_arg == optional_argument)
487 shortopts[is] = ':';
488 ++is;
489 if (ld_options[i].opt.has_arg == optional_argument)
491 shortopts[is] = ':';
492 ++is;
496 if (ld_options[i].opt.name != NULL)
498 if (ld_options[i].control == EXACTLY_TWO_DASHES)
500 really_longopts[irl] = ld_options[i].opt;
501 ++irl;
503 else
505 longopts[il] = ld_options[i].opt;
506 ++il;
510 shortopts[is] = '\0';
511 longopts[il].name = NULL;
512 really_longopts[irl].name = NULL;
514 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
516 /* The -G option is ambiguous on different platforms. Sometimes it
517 specifies the largest data size to put into the small data
518 section. Sometimes it is equivalent to --shared. Unfortunately,
519 the first form takes an argument, while the second does not.
521 We need to permit the --shared form because on some platforms,
522 such as Solaris, gcc -shared will pass -G to the linker.
524 To permit either usage, we look through the argument list. If we
525 find -G not followed by a number, we change it into --shared.
526 This will work for most normal cases. */
527 for (i = 1; i < argc; i++)
528 if (strcmp (argv[i], "-G") == 0
529 && (i + 1 >= argc
530 || ! ISDIGIT (argv[i + 1][0])))
531 argv[i] = (char *) "--shared";
533 /* Because we permit long options to start with a single dash, and
534 we have a --library option, and the -l option is conventionally
535 used with an immediately following argument, we can have bad
536 results if somebody tries to use -l with a library whose name
537 happens to start with "ibrary", as in -li. We avoid problems by
538 simply turning -l into --library. This means that users will
539 have to use two dashes in order to use --library, which is OK
540 since that's how it is documented.
542 FIXME: It's possible that this problem can arise for other short
543 options as well, although the user does always have the recourse
544 of adding a space between the option and the argument. */
545 for (i = 1; i < argc; i++)
547 if (argv[i][0] == '-'
548 && argv[i][1] == 'l'
549 && argv[i][2] != '\0')
551 char *n;
553 n = xmalloc (strlen (argv[i]) + 20);
554 sprintf (n, "--library=%s", argv[i] + 2);
555 argv[i] = n;
559 last_optind = -1;
560 while (1)
562 int longind;
563 int optc;
565 /* Using last_optind lets us avoid calling ldemul_parse_args
566 multiple times on a single option, which would lead to
567 confusion in the internal static variables maintained by
568 getopt. This could otherwise happen for an argument like
569 -nx, in which the -n is parsed as a single option, and we
570 loop around to pick up the -x. */
571 if (optind != last_optind)
572 if (ldemul_parse_args (argc, argv))
573 continue;
575 /* getopt_long_only is like getopt_long, but '-' as well as '--'
576 can indicate a long option. */
577 opterr = 0;
578 last_optind = optind;
579 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
580 if (optc == '?')
582 optind = last_optind;
583 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
586 if (ldemul_handle_option (optc))
587 continue;
589 if (optc == -1)
590 break;
592 switch (optc)
594 case '?':
595 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
596 default:
597 einfo (_("%P%F: use the --help option for usage information\n"));
599 case 1: /* File name. */
600 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
601 break;
603 case OPTION_IGNORE:
604 break;
605 case 'a':
606 /* For HP/UX compatibility. Actually -a shared should mean
607 ``use only shared libraries'' but, then, we don't
608 currently support shared libraries on HP/UX anyhow. */
609 if (strcmp (optarg, "archive") == 0)
610 config.dynamic_link = FALSE;
611 else if (strcmp (optarg, "shared") == 0
612 || strcmp (optarg, "default") == 0)
613 config.dynamic_link = TRUE;
614 else
615 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
616 break;
617 case OPTION_ASSERT:
618 /* FIXME: We just ignore these, but we should handle them. */
619 if (strcmp (optarg, "definitions") == 0)
621 else if (strcmp (optarg, "nodefinitions") == 0)
623 else if (strcmp (optarg, "nosymbolic") == 0)
625 else if (strcmp (optarg, "pure-text") == 0)
627 else
628 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
629 break;
630 case 'A':
631 ldfile_add_arch (optarg);
632 break;
633 case 'b':
634 lang_add_target (optarg);
635 break;
636 case 'c':
637 ldfile_open_command_file (optarg);
638 parser_input = input_mri_script;
639 yyparse ();
640 break;
641 case OPTION_CALL_SHARED:
642 config.dynamic_link = TRUE;
643 break;
644 case OPTION_NON_SHARED:
645 config.dynamic_link = FALSE;
646 break;
647 case OPTION_CREF:
648 command_line.cref = TRUE;
649 link_info.notice_all = TRUE;
650 break;
651 case 'd':
652 command_line.force_common_definition = TRUE;
653 break;
654 case OPTION_DEFSYM:
655 lex_string = optarg;
656 lex_redirect (optarg);
657 parser_input = input_defsym;
658 parsing_defsym = 1;
659 yyparse ();
660 parsing_defsym = 0;
661 lex_string = NULL;
662 break;
663 case OPTION_DEMANGLE:
664 demangling = TRUE;
665 if (optarg != NULL)
667 enum demangling_styles style;
669 style = cplus_demangle_name_to_style (optarg);
670 if (style == unknown_demangling)
671 einfo (_("%F%P: unknown demangling style `%s'"),
672 optarg);
674 cplus_demangle_set_style (style);
676 break;
677 case 'I': /* Used on Solaris. */
678 case OPTION_DYNAMIC_LINKER:
679 command_line.interpreter = optarg;
680 break;
681 case OPTION_EB:
682 command_line.endian = ENDIAN_BIG;
683 break;
684 case OPTION_EL:
685 command_line.endian = ENDIAN_LITTLE;
686 break;
687 case OPTION_EMBEDDED_RELOCS:
688 command_line.embedded_relocs = TRUE;
689 break;
690 case OPTION_EXPORT_DYNAMIC:
691 case 'E': /* HP/UX compatibility. */
692 link_info.export_dynamic = TRUE;
693 break;
694 case 'e':
695 lang_add_entry (optarg, TRUE);
696 break;
697 case 'f':
698 if (command_line.auxiliary_filters == NULL)
700 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *));
701 command_line.auxiliary_filters[0] = optarg;
702 command_line.auxiliary_filters[1] = NULL;
704 else
706 int c;
707 char **p;
709 c = 0;
710 for (p = command_line.auxiliary_filters; *p != NULL; p++)
711 ++c;
712 command_line.auxiliary_filters
713 = xrealloc (command_line.auxiliary_filters,
714 (c + 2) * sizeof (char *));
715 command_line.auxiliary_filters[c] = optarg;
716 command_line.auxiliary_filters[c + 1] = NULL;
718 break;
719 case 'F':
720 command_line.filter_shlib = optarg;
721 break;
722 case OPTION_FORCE_EXE_SUFFIX:
723 command_line.force_exe_suffix = TRUE;
724 break;
725 case 'G':
727 char *end;
728 g_switch_value = strtoul (optarg, &end, 0);
729 if (*end)
730 einfo (_("%P%F: invalid number `%s'\n"), optarg);
732 break;
733 case 'g':
734 /* Ignore. */
735 break;
736 case OPTION_GC_SECTIONS:
737 command_line.gc_sections = TRUE;
738 break;
739 case OPTION_HELP:
740 help ();
741 xexit (0);
742 break;
743 case 'L':
744 ldfile_add_library_path (optarg, TRUE);
745 break;
746 case 'l':
747 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
748 break;
749 case 'M':
750 config.map_filename = "-";
751 break;
752 case 'm':
753 /* Ignore. Was handled in a pre-parse. */
754 break;
755 case OPTION_MAP:
756 config.map_filename = optarg;
757 break;
758 case 'N':
759 config.text_read_only = FALSE;
760 config.magic_demand_paged = FALSE;
761 config.dynamic_link = FALSE;
762 break;
763 case OPTION_NO_OMAGIC:
764 config.text_read_only = TRUE;
765 config.magic_demand_paged = TRUE;
766 /* NB/ Does not set dynamic_link to TRUE.
767 Use --call-shared or -Bdynamic for this. */
768 break;
769 case 'n':
770 config.magic_demand_paged = FALSE;
771 config.dynamic_link = FALSE;
772 break;
773 case OPTION_NO_DEFINE_COMMON:
774 command_line.inhibit_common_definition = TRUE;
775 break;
776 case OPTION_NO_DEMANGLE:
777 demangling = FALSE;
778 break;
779 case OPTION_NO_GC_SECTIONS:
780 command_line.gc_sections = FALSE;
781 break;
782 case OPTION_NO_KEEP_MEMORY:
783 link_info.keep_memory = FALSE;
784 break;
785 case OPTION_NO_UNDEFINED:
786 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
787 break;
788 case OPTION_ALLOW_SHLIB_UNDEFINED:
789 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
790 break;
791 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
792 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
793 break;
794 case OPTION_UNRESOLVED_SYMBOLS:
795 if (strcmp (optarg, "ignore-all") == 0)
797 link_info.unresolved_syms_in_objects = RM_IGNORE;
798 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
800 else if (strcmp (optarg, "report-all") == 0)
802 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
803 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
805 else if (strcmp (optarg, "ignore-in-object-files") == 0)
807 link_info.unresolved_syms_in_objects = RM_IGNORE;
808 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
810 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
812 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
813 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
815 else
816 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
817 break;
818 case OPTION_WARN_UNRESOLVED_SYMBOLS:
819 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
820 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
821 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
822 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
823 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
824 break;
826 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
827 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
828 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
829 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
830 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
831 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
832 break;
833 case OPTION_ALLOW_MULTIPLE_DEFINITION:
834 link_info.allow_multiple_definition = TRUE;
835 break;
836 case OPTION_NO_UNDEFINED_VERSION:
837 link_info.allow_undefined_version = FALSE;
838 break;
839 case OPTION_NO_WARN_MISMATCH:
840 command_line.warn_mismatch = FALSE;
841 break;
842 case OPTION_NOINHIBIT_EXEC:
843 force_make_executable = TRUE;
844 break;
845 case OPTION_NOSTDLIB:
846 config.only_cmd_line_lib_dirs = TRUE;
847 break;
848 case OPTION_NO_WHOLE_ARCHIVE:
849 whole_archive = FALSE;
850 break;
851 case 'O':
852 /* FIXME "-O<non-digits> <value>" used to set the address of
853 section <non-digits>. Was this for compatibility with
854 something, or can we create a new option to do that
855 (with a syntax similar to -defsym)?
856 getopt can't handle two args to an option without kludges. */
858 /* Enable optimizations of output files. */
859 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
860 break;
861 case 'o':
862 lang_add_output (optarg, 0);
863 break;
864 case OPTION_OFORMAT:
865 lang_add_output_format (optarg, NULL, NULL, 0);
866 break;
867 case 'q':
868 link_info.emitrelocations = TRUE;
869 break;
870 case 'i':
871 case 'r':
872 if (optind == last_optind)
873 /* This can happen if the user put "-rpath,a" on the command
874 line. (Or something similar. The comma is important).
875 Getopt becomes confused and thinks that this is a -r option
876 but it cannot parse the text after the -r so it refuses to
877 increment the optind counter. Detect this case and issue
878 an error message here. We cannot just make this a warning,
879 increment optind, and continue because getopt is too confused
880 and will seg-fault the next time around. */
881 einfo(_("%P%F: bad -rpath option\n"));
883 link_info.relocatable = TRUE;
884 config.build_constructors = FALSE;
885 config.magic_demand_paged = FALSE;
886 config.text_read_only = FALSE;
887 config.dynamic_link = FALSE;
888 break;
889 case 'R':
890 /* The GNU linker traditionally uses -R to mean to include
891 only the symbols from a file. The Solaris linker uses -R
892 to set the path used by the runtime linker to find
893 libraries. This is the GNU linker -rpath argument. We
894 try to support both simultaneously by checking the file
895 named. If it is a directory, rather than a regular file,
896 we assume -rpath was meant. */
898 struct stat s;
900 if (stat (optarg, &s) >= 0
901 && ! S_ISDIR (s.st_mode))
903 lang_add_input_file (optarg,
904 lang_input_file_is_symbols_only_enum,
905 NULL);
906 break;
909 /* Fall through. */
910 case OPTION_RPATH:
911 if (command_line.rpath == NULL)
912 command_line.rpath = xstrdup (optarg);
913 else
915 size_t rpath_len = strlen (command_line.rpath);
916 size_t optarg_len = strlen (optarg);
917 char *buf;
918 char *cp = command_line.rpath;
920 /* First see whether OPTARG is already in the path. */
923 size_t idx = 0;
925 while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
926 ++idx;
927 if (optarg[idx] == '\0'
928 && (cp[idx] == '\0' || cp[idx] == ':'))
929 /* We found it. */
930 break;
932 /* Not yet found. */
933 cp = strchr (cp, ':');
934 if (cp != NULL)
935 ++cp;
937 while (cp != NULL);
939 if (cp == NULL)
941 buf = xmalloc (rpath_len + optarg_len + 2);
942 sprintf (buf, "%s:%s", command_line.rpath, optarg);
943 free (command_line.rpath);
944 command_line.rpath = buf;
947 break;
948 case OPTION_RPATH_LINK:
949 if (command_line.rpath_link == NULL)
950 command_line.rpath_link = xstrdup (optarg);
951 else
953 char *buf;
955 buf = xmalloc (strlen (command_line.rpath_link)
956 + strlen (optarg)
957 + 2);
958 sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
959 free (command_line.rpath_link);
960 command_line.rpath_link = buf;
962 break;
963 case OPTION_RELAX:
964 command_line.relax = TRUE;
965 break;
966 case OPTION_RETAIN_SYMBOLS_FILE:
967 add_keepsyms_file (optarg);
968 break;
969 case 'S':
970 link_info.strip = strip_debugger;
971 break;
972 case 's':
973 link_info.strip = strip_all;
974 break;
975 case OPTION_STRIP_DISCARDED:
976 link_info.strip_discarded = TRUE;
977 break;
978 case OPTION_NO_STRIP_DISCARDED:
979 link_info.strip_discarded = FALSE;
980 break;
981 case OPTION_SHARED:
982 if (config.has_shared)
984 link_info.shared = TRUE;
985 /* When creating a shared library, the default
986 behaviour is to ignore any unresolved references. */
987 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
988 link_info.unresolved_syms_in_objects = RM_IGNORE;
989 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
990 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
992 else
993 einfo (_("%P%F: -shared not supported\n"));
994 break;
995 case OPTION_PIE:
996 if (config.has_shared)
998 link_info.shared = TRUE;
999 link_info.pie = TRUE;
1001 else
1002 einfo (_("%P%F: -pie not supported\n"));
1003 break;
1004 case 'h': /* Used on Solaris. */
1005 case OPTION_SONAME:
1006 command_line.soname = optarg;
1007 break;
1008 case OPTION_SORT_COMMON:
1009 config.sort_common = TRUE;
1010 break;
1011 case OPTION_STATS:
1012 config.stats = TRUE;
1013 break;
1014 case OPTION_SYMBOLIC:
1015 link_info.symbolic = TRUE;
1016 break;
1017 case 't':
1018 trace_files = TRUE;
1019 break;
1020 case 'T':
1021 ldfile_open_command_file (optarg);
1022 parser_input = input_script;
1023 yyparse ();
1024 break;
1025 case OPTION_SECTION_START:
1027 char *optarg2;
1028 char *sec_name;
1029 int len;
1031 /* Check for <something>=<somthing>... */
1032 optarg2 = strchr (optarg, '=');
1033 if (optarg2 == NULL)
1034 einfo (_("%P%F: invalid argument to option \"--section-start\"\n"));
1036 optarg2++;
1038 /* So far so good. Are all the args present? */
1039 if ((*optarg == '\0') || (*optarg2 == '\0'))
1040 einfo (_("%P%F: missing argument(s) to option \"--section-start\"\n"));
1042 /* We must copy the section name as set_section_start
1043 doesn't do it for us. */
1044 len = optarg2 - optarg;
1045 sec_name = xmalloc (len);
1046 memcpy (sec_name, optarg, len - 1);
1047 sec_name[len - 1] = 0;
1049 /* Then set it... */
1050 set_section_start (sec_name, optarg2);
1052 break;
1053 case OPTION_TARGET_HELP:
1054 /* Mention any target specific options. */
1055 ldemul_list_emulation_options (stdout);
1056 exit (0);
1057 case OPTION_TBSS:
1058 set_section_start (".bss", optarg);
1059 break;
1060 case OPTION_TDATA:
1061 set_section_start (".data", optarg);
1062 break;
1063 case OPTION_TTEXT:
1064 set_section_start (".text", optarg);
1065 break;
1066 case OPTION_TRADITIONAL_FORMAT:
1067 link_info.traditional_format = TRUE;
1068 break;
1069 case OPTION_TASK_LINK:
1070 link_info.task_link = TRUE;
1071 /* Fall through - do an implied -r option. */
1072 case OPTION_UR:
1073 link_info.relocatable = TRUE;
1074 config.build_constructors = TRUE;
1075 config.magic_demand_paged = FALSE;
1076 config.text_read_only = FALSE;
1077 config.dynamic_link = FALSE;
1078 break;
1079 case 'u':
1080 ldlang_add_undef (optarg);
1081 break;
1082 case OPTION_UNIQUE:
1083 if (optarg != NULL)
1084 lang_add_unique (optarg);
1085 else
1086 config.unique_orphan_sections = TRUE;
1087 break;
1088 case OPTION_VERBOSE:
1089 ldversion (1);
1090 version_printed = TRUE;
1091 trace_file_tries = TRUE;
1092 overflow_cutoff_limit = -2;
1093 break;
1094 case 'v':
1095 ldversion (0);
1096 version_printed = TRUE;
1097 break;
1098 case 'V':
1099 ldversion (1);
1100 version_printed = TRUE;
1101 break;
1102 case OPTION_VERSION:
1103 ldversion (2);
1104 xexit (0);
1105 break;
1106 case OPTION_VERSION_SCRIPT:
1107 /* This option indicates a small script that only specifies
1108 version information. Read it, but don't assume that
1109 we've seen a linker script. */
1111 FILE *hold_script_handle;
1113 hold_script_handle = saved_script_handle;
1114 ldfile_open_command_file (optarg);
1115 saved_script_handle = hold_script_handle;
1116 parser_input = input_version_script;
1117 yyparse ();
1119 break;
1120 case OPTION_VERSION_EXPORTS_SECTION:
1121 /* This option records a version symbol to be applied to the
1122 symbols listed for export to be found in the object files
1123 .exports sections. */
1124 command_line.version_exports_section = optarg;
1125 break;
1126 case OPTION_WARN_COMMON:
1127 config.warn_common = TRUE;
1128 break;
1129 case OPTION_WARN_CONSTRUCTORS:
1130 config.warn_constructors = TRUE;
1131 break;
1132 case OPTION_WARN_FATAL:
1133 config.fatal_warnings = TRUE;
1134 break;
1135 case OPTION_WARN_MULTIPLE_GP:
1136 config.warn_multiple_gp = TRUE;
1137 break;
1138 case OPTION_WARN_ONCE:
1139 config.warn_once = TRUE;
1140 break;
1141 case OPTION_WARN_SECTION_ALIGN:
1142 config.warn_section_align = TRUE;
1143 break;
1144 case OPTION_WHOLE_ARCHIVE:
1145 whole_archive = TRUE;
1146 break;
1147 case OPTION_AS_NEEDED:
1148 as_needed = TRUE;
1149 break;
1150 case OPTION_NO_AS_NEEDED:
1151 as_needed = FALSE;
1152 break;
1153 case OPTION_WRAP:
1154 add_wrap (optarg);
1155 break;
1156 case OPTION_DISCARD_NONE:
1157 link_info.discard = discard_none;
1158 break;
1159 case 'X':
1160 link_info.discard = discard_l;
1161 break;
1162 case 'x':
1163 link_info.discard = discard_all;
1164 break;
1165 case 'Y':
1166 if (strncmp (optarg, "P,", 2) == 0)
1167 optarg += 2;
1168 if (default_dirlist != NULL)
1169 free (default_dirlist);
1170 default_dirlist = xstrdup (optarg);
1171 break;
1172 case 'y':
1173 add_ysym (optarg);
1174 break;
1175 case OPTION_SPARE_DYNAMIC_TAGS:
1176 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1177 break;
1178 case OPTION_SPLIT_BY_RELOC:
1179 if (optarg != NULL)
1180 config.split_by_reloc = strtoul (optarg, NULL, 0);
1181 else
1182 config.split_by_reloc = 32768;
1183 break;
1184 case OPTION_SPLIT_BY_FILE:
1185 if (optarg != NULL)
1186 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1187 else
1188 config.split_by_file = 1;
1189 break;
1190 case OPTION_CHECK_SECTIONS:
1191 command_line.check_section_addresses = TRUE;
1192 break;
1193 case OPTION_NO_CHECK_SECTIONS:
1194 command_line.check_section_addresses = FALSE;
1195 break;
1196 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1197 command_line.accept_unknown_input_arch = TRUE;
1198 break;
1199 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1200 command_line.accept_unknown_input_arch = FALSE;
1201 break;
1202 case '(':
1203 if (ingroup)
1204 einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1206 lang_enter_group ();
1207 ingroup = 1;
1208 break;
1209 case ')':
1210 if (! ingroup)
1211 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1213 lang_leave_group ();
1214 ingroup = 0;
1215 break;
1217 case OPTION_INIT:
1218 link_info.init_function = optarg;
1219 break;
1221 case OPTION_FINI:
1222 link_info.fini_function = optarg;
1223 break;
1227 if (ingroup)
1228 lang_leave_group ();
1230 if (default_dirlist != NULL)
1232 set_default_dirlist (default_dirlist);
1233 free (default_dirlist);
1236 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1237 /* FIXME: Should we allow emulations a chance to set this ? */
1238 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1240 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1241 /* FIXME: Should we allow emulations a chance to set this ? */
1242 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1245 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1246 library search path. */
1248 static void
1249 set_default_dirlist (char *dirlist_ptr)
1251 char *p;
1253 while (1)
1255 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1256 if (p != NULL)
1257 *p = '\0';
1258 if (*dirlist_ptr != '\0')
1259 ldfile_add_library_path (dirlist_ptr, TRUE);
1260 if (p == NULL)
1261 break;
1262 dirlist_ptr = p + 1;
1266 static void
1267 set_section_start (char *sect, char *valstr)
1269 const char *end;
1270 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1271 if (*end)
1272 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1273 lang_section_start (sect, exp_intop (val));
1276 /* Print help messages for the options. */
1278 static void
1279 help (void)
1281 unsigned i;
1282 const char **targets, **pp;
1284 printf (_("Usage: %s [options] file...\n"), program_name);
1286 printf (_("Options:\n"));
1287 for (i = 0; i < OPTION_COUNT; i++)
1289 if (ld_options[i].doc != NULL)
1291 bfd_boolean comma;
1292 int len;
1293 unsigned j;
1295 printf (" ");
1297 comma = FALSE;
1298 len = 2;
1300 j = i;
1303 if (ld_options[j].shortopt != '\0'
1304 && ld_options[j].control != NO_HELP)
1306 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1307 len += (comma ? 2 : 0) + 2;
1308 if (ld_options[j].arg != NULL)
1310 if (ld_options[j].opt.has_arg != optional_argument)
1312 printf (" ");
1313 ++len;
1315 printf ("%s", _(ld_options[j].arg));
1316 len += strlen (_(ld_options[j].arg));
1318 comma = TRUE;
1320 ++j;
1322 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1324 j = i;
1327 if (ld_options[j].opt.name != NULL
1328 && ld_options[j].control != NO_HELP)
1330 int two_dashes =
1331 (ld_options[j].control == TWO_DASHES
1332 || ld_options[j].control == EXACTLY_TWO_DASHES);
1334 printf ("%s-%s%s",
1335 comma ? ", " : "",
1336 two_dashes ? "-" : "",
1337 ld_options[j].opt.name);
1338 len += ((comma ? 2 : 0)
1340 + (two_dashes ? 1 : 0)
1341 + strlen (ld_options[j].opt.name));
1342 if (ld_options[j].arg != NULL)
1344 printf (" %s", _(ld_options[j].arg));
1345 len += 1 + strlen (_(ld_options[j].arg));
1347 comma = TRUE;
1349 ++j;
1351 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1353 if (len >= 30)
1355 printf ("\n");
1356 len = 0;
1359 for (; len < 30; len++)
1360 putchar (' ');
1362 printf ("%s\n", _(ld_options[i].doc));
1366 /* Note: Various tools (such as libtool) depend upon the
1367 format of the listings below - do not change them. */
1368 /* xgettext:c-format */
1369 printf (_("%s: supported targets:"), program_name);
1370 targets = bfd_target_list ();
1371 for (pp = targets; *pp != NULL; pp++)
1372 printf (" %s", *pp);
1373 free (targets);
1374 printf ("\n");
1376 /* xgettext:c-format */
1377 printf (_("%s: supported emulations: "), program_name);
1378 ldemul_list_emulations (stdout);
1379 printf ("\n");
1381 /* xgettext:c-format */
1382 printf (_("%s: emulation specific options:\n"), program_name);
1383 ldemul_list_emulation_options (stdout);
1384 printf ("\n");
1386 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);