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2003-06-03 H.J. Lu <[email protected]>
[binutils.git] / ld / lexsup.c
CommitLineData
252b5132 1/* Parse options for the GNU linker.
a2b64bed 2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
ae9a127f 3 2001, 2002, 2003
252b5132
RH		 4 Free Software Foundation, Inc.
5
53b2a62f 6 This file is part of GLD, the Gnu Linker.
252b5132 7
53b2a62f
NC		 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.
252b5132 12
53b2a62f
NC		 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.
252b5132 17
53b2a62f
NC		 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. */
252b5132
RH		 22
23#include "bfd.h"
24#include "sysdep.h"
25#include "libiberty.h"
26#include <stdio.h>
27#include <string.h>
3882b010 28#include "safe-ctype.h"
252b5132
RH		 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"
df2a7313 36#include <ldgram.h>
252b5132
RH		 37#include "ldlex.h"
38#include "ldfile.h"
39#include "ldver.h"
40#include "ldemul.h"
28c309a2 41#include "demangle.h"
252b5132
RH		 42
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
50
5cc18311 51/* Somewhere above, sys/stat.h got included . . . . */
252b5132
RH		 52#if !defined(S_ISDIR) && defined(S_IFDIR)
53#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
54#endif
55
3d9f6277 56static int is_num PARAMS ((const char *, int, int, int));
53b2a62f
NC		 57static void set_default_dirlist PARAMS ((char *));
58static void set_section_start PARAMS ((char *, char *));
252b5132
RH		 59static void help PARAMS ((void));
60
61/* Non-zero if we are processing a --defsym from the command line. */
62int parsing_defsym = 0;
63
64/* Codes used for the long options with no short synonyms. 150 isn't
65 special; it's just an arbitrary non-ASCII char value. */
66
67#define OPTION_ASSERT 150
68#define OPTION_CALL_SHARED (OPTION_ASSERT + 1)
69#define OPTION_CREF (OPTION_CALL_SHARED + 1)
70#define OPTION_DEFSYM (OPTION_CREF + 1)
71#define OPTION_DEMANGLE (OPTION_DEFSYM + 1)
72#define OPTION_DYNAMIC_LINKER (OPTION_DEMANGLE + 1)
73#define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
74#define OPTION_EL (OPTION_EB + 1)
75#define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1)
76#define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
77#define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
78#define OPTION_IGNORE (OPTION_HELP + 1)
79#define OPTION_MAP (OPTION_IGNORE + 1)
80#define OPTION_NO_DEMANGLE (OPTION_MAP + 1)
81#define OPTION_NO_KEEP_MEMORY (OPTION_NO_DEMANGLE + 1)
82#define OPTION_NO_WARN_MISMATCH (OPTION_NO_KEEP_MEMORY + 1)
83#define OPTION_NOINHIBIT_EXEC (OPTION_NO_WARN_MISMATCH + 1)
84#define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
85#define OPTION_NO_WHOLE_ARCHIVE (OPTION_NON_SHARED + 1)
86#define OPTION_OFORMAT (OPTION_NO_WHOLE_ARCHIVE + 1)
87#define OPTION_RELAX (OPTION_OFORMAT + 1)
88#define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
89#define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
90#define OPTION_RPATH_LINK (OPTION_RPATH + 1)
91#define OPTION_SHARED (OPTION_RPATH_LINK + 1)
92#define OPTION_SONAME (OPTION_SHARED + 1)
93#define OPTION_SORT_COMMON (OPTION_SONAME + 1)
94#define OPTION_STATS (OPTION_SORT_COMMON + 1)
95#define OPTION_SYMBOLIC (OPTION_STATS + 1)
96#define OPTION_TASK_LINK (OPTION_SYMBOLIC + 1)
97#define OPTION_TBSS (OPTION_TASK_LINK + 1)
98#define OPTION_TDATA (OPTION_TBSS + 1)
99#define OPTION_TTEXT (OPTION_TDATA + 1)
100#define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
101#define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
102#define OPTION_VERBOSE (OPTION_UR + 1)
103#define OPTION_VERSION (OPTION_VERBOSE + 1)
104#define OPTION_VERSION_SCRIPT (OPTION_VERSION + 1)
105#define OPTION_VERSION_EXPORTS_SECTION (OPTION_VERSION_SCRIPT + 1)
106#define OPTION_WARN_COMMON (OPTION_VERSION_EXPORTS_SECTION + 1)
107#define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1)
7ce691ae
C		 108#define OPTION_WARN_FATAL (OPTION_WARN_CONSTRUCTORS + 1)
109#define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_FATAL + 1)
252b5132
RH		 110#define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1)
111#define OPTION_WARN_SECTION_ALIGN (OPTION_WARN_ONCE + 1)
112#define OPTION_SPLIT_BY_RELOC (OPTION_WARN_SECTION_ALIGN + 1)
113#define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
114#define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
115#define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1)
116#define OPTION_FORCE_EXE_SUFFIX (OPTION_WRAP + 1)
117#define OPTION_GC_SECTIONS (OPTION_FORCE_EXE_SUFFIX + 1)
118#define OPTION_NO_GC_SECTIONS (OPTION_GC_SECTIONS + 1)
119#define OPTION_CHECK_SECTIONS (OPTION_NO_GC_SECTIONS + 1)
120#define OPTION_NO_CHECK_SECTIONS (OPTION_CHECK_SECTIONS + 1)
121#define OPTION_MPC860C0 (OPTION_NO_CHECK_SECTIONS + 1)
122#define OPTION_NO_UNDEFINED (OPTION_MPC860C0 + 1)
3dbf70a2
MM		 123#define OPTION_INIT (OPTION_NO_UNDEFINED + 1)
124#define OPTION_FINI (OPTION_INIT + 1)
176355da 125#define OPTION_SECTION_START (OPTION_FINI + 1)
a854a4a7 126#define OPTION_UNIQUE (OPTION_SECTION_START + 1)
ea20a7da 127#define OPTION_TARGET_HELP (OPTION_UNIQUE + 1)
b79e8c78 128#define OPTION_ALLOW_SHLIB_UNDEFINED (OPTION_TARGET_HELP + 1)
ae9a127f
NC		 129#define OPTION_NO_ALLOW_SHLIB_UNDEFINED (OPTION_ALLOW_SHLIB_UNDEFINED + 1)
130#define OPTION_ALLOW_MULTIPLE_DEFINITION (OPTION_NO_ALLOW_SHLIB_UNDEFINED + 1)
31941635
L		 131#define OPTION_NO_UNDEFINED_VERSION (OPTION_ALLOW_MULTIPLE_DEFINITION + 1)
132#define OPTION_DISCARD_NONE (OPTION_NO_UNDEFINED_VERSION + 1)
db6751f2 133#define OPTION_SPARE_DYNAMIC_TAGS (OPTION_DISCARD_NONE + 1)
4818e05f 134#define OPTION_NO_DEFINE_COMMON (OPTION_SPARE_DYNAMIC_TAGS + 1)
361b220e 135#define OPTION_NOSTDLIB (OPTION_NO_DEFINE_COMMON + 1)
63fd3b82 136#define OPTION_NO_OMAGIC (OPTION_NOSTDLIB + 1)
d5cd3933
AM		 137#define OPTION_STRIP_DISCARDED (OPTION_NO_OMAGIC + 1)
138#define OPTION_NO_STRIP_DISCARDED (OPTION_STRIP_DISCARDED + 1)
139#define OPTION_ACCEPT_UNKNOWN_INPUT_ARCH (OPTION_NO_STRIP_DISCARDED + 1)
312b768e 140#define OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH (OPTION_ACCEPT_UNKNOWN_INPUT_ARCH + 1)
36af4a4e 141#define OPTION_PIE (OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH + 1)
252b5132
RH		 142
143/* The long options. This structure is used for both the option
144 parsing and the help text. */
145
b79e8c78
NC		 146struct ld_option
147{
252b5132
RH		 148 /* The long option information. */
149 struct option opt;
150 /* The short option with the same meaning ('\0' if none). */
151 char shortopt;
152 /* The name of the argument (NULL if none). */
153 const char *arg;
154 /* The documentation string. If this is NULL, this is a synonym for
155 the previous option. */
156 const char *doc;
e47d05ad
KH		 157 enum {
158 /* Use one dash before long option name. */
159 ONE_DASH,
160 /* Use two dashes before long option name. */
161 TWO_DASHES,
e4897a32
NC		 162 /* Only accept two dashes before the long option name.
163 This is an overloading of the use of this enum, since originally it
164 was only intended to tell the --help display function how to display
165 the long option name. This feature was added in order to resolve
166 the confusion about the -omagic command line switch. Is it setting
167 the output file name to "magic" or is it setting the NMAGIC flag on
168 the output ? It has been decided that it is setting the output file
169 name, and that if you want to set the NMAGIC flag you should use -N
170 or --omagic. */
171 EXACTLY_TWO_DASHES,
e47d05ad
KH		 172 /* Don't mention this option in --help output. */
173 NO_HELP
174 } control;
252b5132
RH		 175};
176
b79e8c78
NC		 177static const struct ld_option ld_options[] =
178{
252b5132
RH		 179 { {NULL, required_argument, NULL, '\0'},
180 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
181 ONE_DASH },
182 { {"architecture", required_argument, NULL, 'A'},
183 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
184 { {"format", required_argument, NULL, 'b'},
185 'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES },
186 { {"mri-script", required_argument, NULL, 'c'},
187 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
188 { {"dc", no_argument, NULL, 'd'},
189 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
190 { {"dp", no_argument, NULL, 'd'},
191 '\0', NULL, NULL, ONE_DASH },
192 { {"entry", required_argument, NULL, 'e'},
193 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
194 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
195 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
196 { {"EB", no_argument, NULL, OPTION_EB},
197 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
198 { {"EL", no_argument, NULL, OPTION_EL},
199 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
200 { {"auxiliary", required_argument, NULL, 'f'},
201 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
202 TWO_DASHES },
203 { {"filter", required_argument, NULL, 'F'},
204 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES },
205 { {NULL, no_argument, NULL, '\0'},
206 'g', NULL, N_("Ignored"), ONE_DASH },
207 { {"gpsize", required_argument, NULL, 'G'},
208 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
209 TWO_DASHES },
210 { {"soname", required_argument, NULL, OPTION_SONAME},
211 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
506eee22 212 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
ff291a48 213 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), TWO_DASHES },
252b5132
RH		 214 { {"library", required_argument, NULL, 'l'},
215 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
216 { {"library-path", required_argument, NULL, 'L'},
217 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES },
218 { {NULL, required_argument, NULL, '\0'},
219 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
220 { {"print-map", no_argument, NULL, 'M'},
221 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
222 { {"nmagic", no_argument, NULL, 'n'},
223 'n', NULL, N_("Do not page align data"), TWO_DASHES },
224 { {"omagic", no_argument, NULL, 'N'},
225 'N', NULL, N_("Do not page align data, do not make text readonly"),
e4897a32 226 EXACTLY_TWO_DASHES },
63fd3b82
NC		 227 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
228 '\0', NULL, N_("Page align data, make text readonly"), EXACTLY_TWO_DASHES },
252b5132 229 { {"output", required_argument, NULL, 'o'},
e4897a32 230 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
252b5132
RH		 231 { {NULL, required_argument, NULL, '\0'},
232 'O', NULL, N_("Optimize output file"), ONE_DASH },
233 { {"Qy", no_argument, NULL, OPTION_IGNORE},
234 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
a712da20
NC		 235 { {"emit-relocs", no_argument, NULL, 'q'},
236 'q', NULL, "Generate relocations in final output", TWO_DASHES },
079a8e4a
NC		 237 { {"relocateable", no_argument, NULL, 'r'},
238 'r', NULL, N_("Generate relocateable output"), TWO_DASHES },
252b5132
RH		 239 { {NULL, no_argument, NULL, '\0'},
240 'i', NULL, NULL, ONE_DASH },
241 { {"just-symbols", required_argument, NULL, 'R'},
242 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
243 TWO_DASHES },
244 { {"strip-all", no_argument, NULL, 's'},
245 's', NULL, N_("Strip all symbols"), TWO_DASHES },
246 { {"strip-debug", no_argument, NULL, 'S'},
247 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
d5cd3933
AM		 248 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
249 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
250 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
251 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
252b5132
RH		 252 { {"trace", no_argument, NULL, 't'},
253 't', NULL, N_("Trace file opens"), TWO_DASHES },
254 { {"script", required_argument, NULL, 'T'},
255 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
256 { {"undefined", required_argument, NULL, 'u'},
257 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES },
577a0623
AM		 258 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
259 '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
252b5132
RH		 260 { {"Ur", no_argument, NULL, OPTION_UR},
261 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
262 { {"version", no_argument, NULL, OPTION_VERSION},
263 'v', NULL, N_("Print version information"), TWO_DASHES },
264 { {NULL, no_argument, NULL, '\0'},
265 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
266 { {"discard-all", no_argument, NULL, 'x'},
267 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
268 { {"discard-locals", no_argument, NULL, 'X'},
f5fa8ca2
JJ		 269 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
270 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
271 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
252b5132
RH		 272 { {"trace-symbol", required_argument, NULL, 'y'},
273 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
274 { {NULL, required_argument, NULL, '\0'},
275 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH },
252b5132
RH		 276 { {"start-group", no_argument, NULL, '('},
277 '(', NULL, N_("Start a group"), TWO_DASHES },
278 { {"end-group", no_argument, NULL, ')'},
279 ')', NULL, N_("End a group"), TWO_DASHES },
312b768e
NC		 280 { {"accept-unknown-input-arch", no_argument, NULL, OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
281 '\0', NULL, N_("Accept input files whose architecture cannot be determined"), TWO_DASHES },
282 { {"no-accept-unknown-input-arch", no_argument, NULL, OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
283 '\0', NULL, N_("Reject input files whose architecture is unknown"), TWO_DASHES },
252b5132
RH		 284 { {"assert", required_argument, NULL, OPTION_ASSERT},
285 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
286 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
287 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
288 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
289 '\0', NULL, NULL, ONE_DASH },
290 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
291 '\0', NULL, NULL, ONE_DASH },
292 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
293 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
294 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
295 '\0', NULL, NULL, ONE_DASH },
296 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
297 '\0', NULL, NULL, ONE_DASH },
298 { {"static", no_argument, NULL, OPTION_NON_SHARED},
299 '\0', NULL, NULL, ONE_DASH },
300 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
301 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
302 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
303 '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
304 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
305 '\0', NULL, N_("Do not check section addresses for overlaps"),
306 TWO_DASHES },
307 { {"cref", no_argument, NULL, OPTION_CREF},
308 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
309 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
310 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
28c309a2
NC		 311 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
312 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES },
252b5132
RH		 313 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
314 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
3dbf70a2
MM		 315 { {"fini", required_argument, NULL, OPTION_FINI},
316 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
252b5132
RH		 317 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
318 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
319 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
320 '\0', NULL, N_("Remove unused sections (on some targets)"),
321 TWO_DASHES },
322 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
323 '\0', NULL, N_("Don't remove unused sections (default)"),
324 TWO_DASHES },
325 { {"help", no_argument, NULL, OPTION_HELP},
326 '\0', NULL, N_("Print option help"), TWO_DASHES },
3dbf70a2
MM		 327 { {"init", required_argument, NULL, OPTION_INIT},
328 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
252b5132
RH		 329 { {"Map", required_argument, NULL, OPTION_MAP},
330 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
4818e05f
AM		 331 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
332 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
252b5132
RH		 333 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
334 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
335 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
336 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
337 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
338 '\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
b79e8c78 339 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
ae9a127f
NC		 340 '\0', NULL, N_("Allow undefined symbols in shared objects (the default)"), TWO_DASHES },
341 { {"no-allow-shlib-undefined", no_argument, NULL, OPTION_NO_ALLOW_SHLIB_UNDEFINED},
342 '\0', NULL, N_("Do not allow undefined symbols in shared objects"), TWO_DASHES },
aa713662
L		 343 { {"allow-multiple-definition", no_argument, NULL, OPTION_ALLOW_MULTIPLE_DEFINITION},
344 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
31941635
L		 345 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
346 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
252b5132
RH		 347 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
348 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
349 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
350 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
351 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
352 '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
353 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
354 '\0', NULL, NULL, NO_HELP },
361b220e
CD		 355 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
356 '\0', NULL, N_("Only use library directories specified on\n\t\t\t\tthe command line"), ONE_DASH },
252b5132 357 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
e4897a32 358 '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES },
252b5132
RH		 359 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
360 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
361 { {"relax", no_argument, NULL, OPTION_RELAX},
362 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
363 { {"retain-symbols-file", required_argument, NULL,
364 OPTION_RETAIN_SYMBOLS_FILE},
365 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
366 { {"rpath", required_argument, NULL, OPTION_RPATH},
367 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
368 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
369 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
370 { {"shared", no_argument, NULL, OPTION_SHARED},
371 '\0', NULL, N_("Create a shared library"), ONE_DASH },
372 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
373 '\0', NULL, NULL, ONE_DASH },
36af4a4e
JJ		 374 { {"pie", no_argument, NULL, OPTION_PIE},
375 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
376 { {"pic-executable", no_argument, NULL, OPTION_PIE},
377 '\0', NULL, NULL, TWO_DASHES },
252b5132
RH		 378 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
379 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
380 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
381 '\0', NULL, NULL, NO_HELP },
db6751f2
JJ		 382 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
383 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), TWO_DASHES },
a854a4a7
AM		 384 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
385 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES },
386 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
387 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
252b5132
RH		 388 { {"stats", no_argument, NULL, OPTION_STATS},
389 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
ea20a7da
CC		 390 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
391 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
252b5132
RH		 392 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
393 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
394 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
395 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
176355da
NC		 396 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
397 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
252b5132
RH		 398 { {"Tbss", required_argument, NULL, OPTION_TBSS},
399 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
400 { {"Tdata", required_argument, NULL, OPTION_TDATA},
401 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
402 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
403 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
404 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
405 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
406 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
407 '\0', NULL, NULL, NO_HELP },
408 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
409 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
410 { {"version-exports-section", required_argument, NULL,
411 OPTION_VERSION_EXPORTS_SECTION },
b3043ee4 412 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
252b5132
RH		 413 TWO_DASHES },
414 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
415 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
416 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
417 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
418 TWO_DASHES },
419 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
420 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
421 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
422 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
423 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
424 '\0', NULL, N_("Warn if start of section changes due to alignment"),
425 TWO_DASHES },
7ce691ae
C		 426 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
427 '\0', NULL, N_("Treat warnings as errors"),
428 TWO_DASHES },
252b5132
RH		 429 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
430 '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
431 { {"wrap", required_argument, NULL, OPTION_WRAP},
432 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
433 { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
b3043ee4 434 '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES }
252b5132
RH		 435};
436
e4897a32 437#define OPTION_COUNT ARRAY_SIZE (ld_options)
252b5132 438
3d9f6277
ILT		 439/* Test STRING for containing a string of digits that form a number
440 between MIN and MAX. The return value is the number or ERR. */
441
442static int
443is_num (string, min, max, err)
444 const char *string;
445 int min;
446 int max;
447 int err;
252b5132
RH		 448{
449 int result = 0;
450
3d9f6277 451 for (; *string; ++string)
252b5132 452 {
3882b010 453 if (! ISDIGIT (*string))
3d9f6277
ILT		 454 {
455 result = err;
456 break;
457 }
458 result = result * 10 + (*string - '0');
252b5132 459 }
252b5132
RH		 460 if (result < min || result > max)
461 result = err;
462
463 return result;
464}
465
466void
467parse_args (argc, argv)
e4897a32 468 unsigned argc;
252b5132
RH		 469 char **argv;
470{
e4897a32
NC		 471 unsigned i;
472 int is, il, irl;
252b5132
RH		 473 int ingroup = 0;
474 char *default_dirlist = NULL;
3bcf5557
AM		 475 char *shortopts;
476 struct option *longopts;
477 struct option *really_longopts;
252b5132
RH		 478 int last_optind;
479
3bcf5557
AM		 480 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
481 longopts = (struct option *) xmalloc (sizeof (*longopts)
482 * (OPTION_COUNT + 1));
483 really_longopts = (struct option *) xmalloc (sizeof (*really_longopts)
484 * (OPTION_COUNT + 1));
485
252b5132
RH		 486 /* Starting the short option string with '-' is for programs that
487 expect options and other ARGV-elements in any order and that care about
488 the ordering of the two. We describe each non-option ARGV-element
489 as if it were the argument of an option with character code 1. */
490 shortopts[0] = '-';
491 is = 1;
492 il = 0;
e4897a32 493 irl = 0;
252b5132
RH		 494 for (i = 0; i < OPTION_COUNT; i++)
495 {
496 if (ld_options[i].shortopt != '\0')
497 {
498 shortopts[is] = ld_options[i].shortopt;
499 ++is;
500 if (ld_options[i].opt.has_arg == required_argument
501 || ld_options[i].opt.has_arg == optional_argument)
502 {
503 shortopts[is] = ':';
504 ++is;
505 if (ld_options[i].opt.has_arg == optional_argument)
506 {
507 shortopts[is] = ':';
508 ++is;
509 }
510 }
511 }
512 if (ld_options[i].opt.name != NULL)
513 {
e4897a32
NC		 514 if (ld_options[i].control == EXACTLY_TWO_DASHES)
515 {
516 really_longopts[irl] = ld_options[i].opt;
517 ++irl;
518 }
519 else
520 {
521 longopts[il] = ld_options[i].opt;
522 ++il;
523 }
252b5132
RH		 524 }
525 }
526 shortopts[is] = '\0';
527 longopts[il].name = NULL;
e4897a32 528 really_longopts[irl].name = NULL;
252b5132 529
3bcf5557
AM		 530 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
531
252b5132
RH		 532 /* The -G option is ambiguous on different platforms. Sometimes it
533 specifies the largest data size to put into the small data
534 section. Sometimes it is equivalent to --shared. Unfortunately,
535 the first form takes an argument, while the second does not.
536
537 We need to permit the --shared form because on some platforms,
538 such as Solaris, gcc -shared will pass -G to the linker.
539
540 To permit either usage, we look through the argument list. If we
541 find -G not followed by a number, we change it into --shared.
542 This will work for most normal cases. */
543 for (i = 1; i < argc; i++)
544 if (strcmp (argv[i], "-G") == 0
545 && (i + 1 >= argc
3882b010 546 || ! ISDIGIT (argv[i + 1][0])))
252b5132
RH		 547 argv[i] = (char *) "--shared";
548
549 /* Because we permit long options to start with a single dash, and
550 we have a --library option, and the -l option is conventionally
551 used with an immediately following argument, we can have bad
552 results if somebody tries to use -l with a library whose name
553 happens to start with "ibrary", as in -li. We avoid problems by
554 simply turning -l into --library. This means that users will
555 have to use two dashes in order to use --library, which is OK
556 since that's how it is documented.
557
558 FIXME: It's possible that this problem can arise for other short
559 options as well, although the user does always have the recourse
560 of adding a space between the option and the argument. */
561 for (i = 1; i < argc; i++)
562 {
563 if (argv[i][0] == '-'
564 && argv[i][1] == 'l'
565 && argv[i][2] != '\0')
566 {
567 char *n;
568
569 n = (char *) xmalloc (strlen (argv[i]) + 20);
570 sprintf (n, "--library=%s", argv[i] + 2);
571 argv[i] = n;
572 }
573 }
574
575 last_optind = -1;
576 while (1)
577 {
89894c62 578 int longind;
252b5132
RH		 579 int optc;
580
581 /* Using last_optind lets us avoid calling ldemul_parse_args
582 multiple times on a single option, which would lead to
583 confusion in the internal static variables maintained by
584 getopt. This could otherwise happen for an argument like
585 -nx, in which the -n is parsed as a single option, and we
586 loop around to pick up the -x. */
587 if (optind != last_optind)
89894c62
AM		 588 if (ldemul_parse_args (argc, argv))
589 continue;
252b5132
RH		 590
591 /* getopt_long_only is like getopt_long, but '-' as well as '--'
592 can indicate a long option. */
0fc3347a 593 opterr = 0;
89894c62 594 last_optind = optind;
252b5132 595 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
0fc3347a
NC		 596 if (optc == '?')
597 {
89894c62
AM		 598 optind = last_optind;
599 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
0fc3347a 600 }
b7ed8fad 601
3bcf5557
AM		 602 if (ldemul_handle_option (optc))
603 continue;
604
252b5132
RH		 605 if (optc == -1)
606 break;
0fc3347a 607
252b5132
RH		 608 switch (optc)
609 {
0fc3347a 610 case '?':
89894c62 611 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
252b5132 612 default:
210a7bd1
NC		 613 einfo (_("%P%F: use the --help option for usage information\n"));
614
252b5132
RH		 615 case 1: /* File name. */
616 lang_add_input_file (optarg, lang_input_file_is_file_enum,
617 (char *) NULL);
618 break;
619
620 case OPTION_IGNORE:
621 break;
622 case 'a':
623 /* For HP/UX compatibility. Actually -a shared should mean
624 ``use only shared libraries'' but, then, we don't
625 currently support shared libraries on HP/UX anyhow. */
626 if (strcmp (optarg, "archive") == 0)
b34976b6 627 config.dynamic_link = FALSE;
252b5132
RH		 628 else if (strcmp (optarg, "shared") == 0
629 || strcmp (optarg, "default") == 0)
b34976b6 630 config.dynamic_link = TRUE;
252b5132
RH		 631 else
632 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
633 break;
634 case OPTION_ASSERT:
635 /* FIXME: We just ignore these, but we should handle them. */
636 if (strcmp (optarg, "definitions") == 0)
637 ;
638 else if (strcmp (optarg, "nodefinitions") == 0)
639 ;
640 else if (strcmp (optarg, "nosymbolic") == 0)
641 ;
642 else if (strcmp (optarg, "pure-text") == 0)
643 ;
644 else
645 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
646 break;
647 case 'A':
648 ldfile_add_arch (optarg);
649 break;
650 case 'b':
651 lang_add_target (optarg);
652 break;
653 case 'c':
654 ldfile_open_command_file (optarg);
655 parser_input = input_mri_script;
656 yyparse ();
657 break;
658 case OPTION_CALL_SHARED:
b34976b6 659 config.dynamic_link = TRUE;
252b5132
RH		 660 break;
661 case OPTION_NON_SHARED:
b34976b6 662 config.dynamic_link = FALSE;
252b5132
RH		 663 break;
664 case OPTION_CREF:
b34976b6
AM		 665 command_line.cref = TRUE;
666 link_info.notice_all = TRUE;
252b5132
RH		 667 break;
668 case 'd':
b34976b6 669 command_line.force_common_definition = TRUE;
252b5132
RH		 670 break;
671 case OPTION_DEFSYM:
672 lex_string = optarg;
673 lex_redirect (optarg);
674 parser_input = input_defsym;
675 parsing_defsym = 1;
676 yyparse ();
677 parsing_defsym = 0;
678 lex_string = NULL;
679 break;
680 case OPTION_DEMANGLE:
b34976b6 681 demangling = TRUE;
28c309a2
NC		 682 if (optarg != NULL)
683 {
684 enum demangling_styles style;
5cc18311 685
28c309a2 686 style = cplus_demangle_name_to_style (optarg);
5cc18311 687 if (style == unknown_demangling)
28c309a2
NC		 688 einfo (_("%F%P: unknown demangling style `%s'"),
689 optarg);
5cc18311 690
28c309a2 691 cplus_demangle_set_style (style);
e47d05ad 692 }
252b5132 693 break;
506eee22 694 case 'I': /* Used on Solaris. */
252b5132
RH		 695 case OPTION_DYNAMIC_LINKER:
696 command_line.interpreter = optarg;
697 break;
698 case OPTION_EB:
699 command_line.endian = ENDIAN_BIG;
700 break;
701 case OPTION_EL:
702 command_line.endian = ENDIAN_LITTLE;
703 break;
704 case OPTION_EMBEDDED_RELOCS:
b34976b6 705 command_line.embedded_relocs = TRUE;
252b5132
RH		 706 break;
707 case OPTION_EXPORT_DYNAMIC:
708 case 'E': /* HP/UX compatibility. */
b34976b6 709 link_info.export_dynamic = TRUE;
252b5132
RH		 710 break;
711 case 'e':
b34976b6 712 lang_add_entry (optarg, TRUE);
252b5132
RH		 713 break;
714 case 'f':
715 if (command_line.auxiliary_filters == NULL)
716 {
717 command_line.auxiliary_filters =
718 (char **) xmalloc (2 * sizeof (char *));
719 command_line.auxiliary_filters[0] = optarg;
720 command_line.auxiliary_filters[1] = NULL;
721 }
722 else
723 {
724 int c;
725 char **p;
726
727 c = 0;
728 for (p = command_line.auxiliary_filters; *p != NULL; p++)
729 ++c;
730 command_line.auxiliary_filters =
731 (char **) xrealloc (command_line.auxiliary_filters,
732 (c + 2) * sizeof (char *));
733 command_line.auxiliary_filters[c] = optarg;
734 command_line.auxiliary_filters[c + 1] = NULL;
735 }
736 break;
737 case 'F':
738 command_line.filter_shlib = optarg;
739 break;
740 case OPTION_FORCE_EXE_SUFFIX:
b34976b6 741 command_line.force_exe_suffix = TRUE;
252b5132
RH		 742 break;
743 case 'G':
744 {
745 char *end;
746 g_switch_value = strtoul (optarg, &end, 0);
747 if (*end)
748 einfo (_("%P%F: invalid number `%s'\n"), optarg);
749 }
750 break;
751 case 'g':
752 /* Ignore. */
753 break;
754 case OPTION_GC_SECTIONS:
b34976b6 755 command_line.gc_sections = TRUE;
252b5132
RH		 756 break;
757 case OPTION_HELP:
758 help ();
759 xexit (0);
760 break;
761 case 'L':
b34976b6 762 ldfile_add_library_path (optarg, TRUE);
252b5132
RH		 763 break;
764 case 'l':
765 lang_add_input_file (optarg, lang_input_file_is_l_enum,
766 (char *) NULL);
767 break;
768 case 'M':
769 config.map_filename = "-";
770 break;
771 case 'm':
772 /* Ignore. Was handled in a pre-parse. */
773 break;
774 case OPTION_MAP:
775 config.map_filename = optarg;
776 break;
777 case 'N':
b34976b6
AM		 778 config.text_read_only = FALSE;
779 config.magic_demand_paged = FALSE;
780 config.dynamic_link = FALSE;
252b5132 781 break;
63fd3b82 782 case OPTION_NO_OMAGIC:
b34976b6
AM		 783 config.text_read_only = TRUE;
784 config.magic_demand_paged = TRUE;
785 /* NB/ Does not set dynamic_link to TRUE.
63fd3b82
NC		 786 Use --call-shared or -Bdynamic for this. */
787 break;
252b5132 788 case 'n':
b34976b6
AM		 789 config.magic_demand_paged = FALSE;
790 config.dynamic_link = FALSE;
252b5132 791 break;
4818e05f 792 case OPTION_NO_DEFINE_COMMON:
b34976b6 793 command_line.inhibit_common_definition = TRUE;
4818e05f 794 break;
252b5132 795 case OPTION_NO_DEMANGLE:
b34976b6 796 demangling = FALSE;
252b5132
RH		 797 break;
798 case OPTION_NO_GC_SECTIONS:
b34976b6 799 command_line.gc_sections = FALSE;
252b5132
RH		 800 break;
801 case OPTION_NO_KEEP_MEMORY:
b34976b6 802 link_info.keep_memory = FALSE;
252b5132
RH		 803 break;
804 case OPTION_NO_UNDEFINED:
b34976b6 805 link_info.no_undefined = TRUE;
252b5132 806 break;
b79e8c78 807 case OPTION_ALLOW_SHLIB_UNDEFINED:
b34976b6 808 link_info.allow_shlib_undefined = TRUE;
b79e8c78 809 break;
ae9a127f
NC		 810 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
811 link_info.allow_shlib_undefined = FALSE;
812 break;
aa713662 813 case OPTION_ALLOW_MULTIPLE_DEFINITION:
b34976b6 814 link_info.allow_multiple_definition = TRUE;
aa713662 815 break;
31941635 816 case OPTION_NO_UNDEFINED_VERSION:
b34976b6 817 link_info.allow_undefined_version = FALSE;
31941635 818 break;
252b5132 819 case OPTION_NO_WARN_MISMATCH:
b34976b6 820 command_line.warn_mismatch = FALSE;
252b5132
RH		 821 break;
822 case OPTION_NOINHIBIT_EXEC:
b34976b6 823 force_make_executable = TRUE;
252b5132 824 break;
361b220e 825 case OPTION_NOSTDLIB:
b34976b6 826 config.only_cmd_line_lib_dirs = TRUE;
361b220e 827 break;
252b5132 828 case OPTION_NO_WHOLE_ARCHIVE:
b34976b6 829 whole_archive = FALSE;
252b5132
RH		 830 break;
831 case 'O':
832 /* FIXME "-O<non-digits> <value>" used to set the address of
833 section <non-digits>. Was this for compatibility with
834 something, or can we create a new option to do that
835 (with a syntax similar to -defsym)?
836 getopt can't handle two args to an option without kludges. */
837
838 /* Enable optimizations of output files. */
b34976b6 839 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
252b5132
RH		 840 break;
841 case 'o':
5cc18311 842 lang_add_output (optarg, 0);
252b5132
RH		 843 break;
844 case OPTION_OFORMAT:
845 lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
846 break;
a712da20 847 case 'q':
b34976b6 848 link_info.emitrelocations = TRUE;
a712da20 849 break;
8c5ff972 850 case 'i':
252b5132 851 case 'r':
210a7bd1
NC		 852 if (optind == last_optind)
853 /* This can happen if the user put "-rpath,a" on the command
854 line. (Or something similar. The comma is important).
855 Getopt becomes confused and thinks that this is a -r option
856 but it cannot parse the text after the -r so it refuses to
857 increment the optind counter. Detect this case and issue
858 an error message here. We cannot just make this a warning,
859 increment optind, and continue because getopt is too confused
860 and will seg-fault the next time around. */
861 einfo(_("%P%F: bad -rpath option\n"));
b7a26f91 862
b34976b6
AM		 863 link_info.relocateable = TRUE;
864 config.build_constructors = FALSE;
865 config.magic_demand_paged = FALSE;
866 config.text_read_only = FALSE;
867 config.dynamic_link = FALSE;
252b5132
RH		 868 break;
869 case 'R':
870 /* The GNU linker traditionally uses -R to mean to include
871 only the symbols from a file. The Solaris linker uses -R
872 to set the path used by the runtime linker to find
873 libraries. This is the GNU linker -rpath argument. We
874 try to support both simultaneously by checking the file
875 named. If it is a directory, rather than a regular file,
876 we assume -rpath was meant. */
877 {
878 struct stat s;
879
880 if (stat (optarg, &s) >= 0
881 && ! S_ISDIR (s.st_mode))
882 {
883 lang_add_input_file (optarg,
884 lang_input_file_is_symbols_only_enum,
885 (char *) NULL);
886 break;
887 }
888 }
889 /* Fall through. */
890 case OPTION_RPATH:
891 if (command_line.rpath == NULL)
d1b2b2dc 892 command_line.rpath = xstrdup (optarg);
252b5132
RH		 893 else
894 {
895 size_t rpath_len = strlen (command_line.rpath);
896 size_t optarg_len = strlen (optarg);
897 char *buf;
898 char *cp = command_line.rpath;
899
900 /* First see whether OPTARG is already in the path. */
901 do
902 {
903 size_t idx = 0;
210a7bd1 904
252b5132
RH		 905 while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
906 ++idx;
907 if (optarg[idx] == '\0'
908 && (cp[idx] == '\0' || cp[idx] == ':'))
909 /* We found it. */
910 break;
911
912 /* Not yet found. */
913 cp = strchr (cp, ':');
914 if (cp != NULL)
915 ++cp;
916 }
917 while (cp != NULL);
918
919 if (cp == NULL)
920 {
921 buf = xmalloc (rpath_len + optarg_len + 2);
922 sprintf (buf, "%s:%s", command_line.rpath, optarg);
923 free (command_line.rpath);
924 command_line.rpath = buf;
925 }
926 }
927 break;
928 case OPTION_RPATH_LINK:
929 if (command_line.rpath_link == NULL)
d1b2b2dc 930 command_line.rpath_link = xstrdup (optarg);
252b5132
RH		 931 else
932 {
933 char *buf;
934
935 buf = xmalloc (strlen (command_line.rpath_link)
936 + strlen (optarg)
937 + 2);
938 sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
939 free (command_line.rpath_link);
940 command_line.rpath_link = buf;
941 }
942 break;
943 case OPTION_RELAX:
b34976b6 944 command_line.relax = TRUE;
252b5132
RH		 945 break;
946 case OPTION_RETAIN_SYMBOLS_FILE:
947 add_keepsyms_file (optarg);
948 break;
949 case 'S':
950 link_info.strip = strip_debugger;
951 break;
952 case 's':
953 link_info.strip = strip_all;
954 break;
d5cd3933
AM		 955 case OPTION_STRIP_DISCARDED:
956 link_info.strip_discarded = TRUE;
957 break;
958 case OPTION_NO_STRIP_DISCARDED:
959 link_info.strip_discarded = FALSE;
960 break;
252b5132
RH		 961 case OPTION_SHARED:
962 if (config.has_shared)
b34976b6 963 link_info.shared = TRUE;
252b5132
RH		 964 else
965 einfo (_("%P%F: -shared not supported\n"));
966 break;
36af4a4e
JJ		 967 case OPTION_PIE:
968 if (config.has_shared)
969 {
970 link_info.shared = TRUE;
971 link_info.pie = TRUE;
972 }
973 else
974 einfo (_("%P%F: -pie not supported\n"));
975 break;
252b5132
RH		 976 case 'h': /* Used on Solaris. */
977 case OPTION_SONAME:
978 command_line.soname = optarg;
979 break;
980 case OPTION_SORT_COMMON:
b34976b6 981 config.sort_common = TRUE;
252b5132
RH		 982 break;
983 case OPTION_STATS:
b34976b6 984 config.stats = TRUE;
252b5132
RH		 985 break;
986 case OPTION_SYMBOLIC:
b34976b6 987 link_info.symbolic = TRUE;
252b5132
RH		 988 break;
989 case 't':
b34976b6 990 trace_files = TRUE;
252b5132
RH		 991 break;
992 case 'T':
993 ldfile_open_command_file (optarg);
994 parser_input = input_script;
995 yyparse ();
996 break;
176355da
NC		 997 case OPTION_SECTION_START:
998 {
999 char *optarg2;
227aeb07
AM		 1000 char *sec_name;
1001 int len;
176355da
NC		 1002
1003 /* Check for <something>=<somthing>... */
1004 optarg2 = strchr (optarg, '=');
1005 if (optarg2 == NULL)
210a7bd1 1006 einfo (_("%P%F: invalid argument to option \"--section-start\"\n"));
176355da 1007
e47d05ad 1008 optarg2++;
5cc18311 1009
176355da
NC		 1010 /* So far so good. Are all the args present? */
1011 if ((*optarg == '\0') || (*optarg2 == '\0'))
210a7bd1 1012 einfo (_("%P%F: missing argument(s) to option \"--section-start\"\n"));
176355da 1013
227aeb07
AM		 1014 /* We must copy the section name as set_section_start
1015 doesn't do it for us. */
1016 len = optarg2 - optarg;
1017 sec_name = xmalloc (len);
1018 memcpy (sec_name, optarg, len - 1);
1019 sec_name[len - 1] = 0;
176355da
NC		 1020
1021 /* Then set it... */
227aeb07 1022 set_section_start (sec_name, optarg2);
176355da
NC		 1023 }
1024 break;
ea20a7da
CC		 1025 case OPTION_TARGET_HELP:
1026 /* Mention any target specific options. */
b7a26f91
KH		 1027 ldemul_list_emulation_options (stdout);
1028 exit (0);
252b5132
RH		 1029 case OPTION_TBSS:
1030 set_section_start (".bss", optarg);
1031 break;
1032 case OPTION_TDATA:
1033 set_section_start (".data", optarg);
1034 break;
1035 case OPTION_TTEXT:
1036 set_section_start (".text", optarg);
1037 break;
1038 case OPTION_TRADITIONAL_FORMAT:
b34976b6 1039 link_info.traditional_format = TRUE;
252b5132
RH		 1040 break;
1041 case OPTION_TASK_LINK:
b34976b6 1042 link_info.task_link = TRUE;
252b5132
RH		 1043 /* Fall through - do an implied -r option. */
1044 case OPTION_UR:
b34976b6
AM		 1045 link_info.relocateable = TRUE;
1046 config.build_constructors = TRUE;
1047 config.magic_demand_paged = FALSE;
1048 config.text_read_only = FALSE;
1049 config.dynamic_link = FALSE;
252b5132
RH		 1050 break;
1051 case 'u':
1052 ldlang_add_undef (optarg);
1053 break;
a854a4a7 1054 case OPTION_UNIQUE:
577a0623
AM		 1055 if (optarg != NULL)
1056 lang_add_unique (optarg);
1057 else
b34976b6 1058 config.unique_orphan_sections = TRUE;
a854a4a7 1059 break;
252b5132
RH		 1060 case OPTION_VERBOSE:
1061 ldversion (1);
b34976b6
AM		 1062 version_printed = TRUE;
1063 trace_file_tries = TRUE;
8aae64e6 1064 overflow_cutoff_limit = -2;
252b5132
RH		 1065 break;
1066 case 'v':
1067 ldversion (0);
b34976b6 1068 version_printed = TRUE;
252b5132
RH		 1069 break;
1070 case 'V':
1071 ldversion (1);
b34976b6 1072 version_printed = TRUE;
252b5132
RH		 1073 break;
1074 case OPTION_VERSION:
d32820f2 1075 ldversion (2);
252b5132
RH		 1076 xexit (0);
1077 break;
1078 case OPTION_VERSION_SCRIPT:
1079 /* This option indicates a small script that only specifies
1080 version information. Read it, but don't assume that
1081 we've seen a linker script. */
1082 {
b7a26f91 1083 FILE *hold_script_handle;
252b5132 1084
b9a8de1e 1085 hold_script_handle = saved_script_handle;
252b5132 1086 ldfile_open_command_file (optarg);
b9a8de1e 1087 saved_script_handle = hold_script_handle;
252b5132
RH		 1088 parser_input = input_version_script;
1089 yyparse ();
1090 }
1091 break;
1092 case OPTION_VERSION_EXPORTS_SECTION:
1093 /* This option records a version symbol to be applied to the
1094 symbols listed for export to be found in the object files
1095 .exports sections. */
1096 command_line.version_exports_section = optarg;
1097 break;
1098 case OPTION_WARN_COMMON:
b34976b6 1099 config.warn_common = TRUE;
252b5132
RH		 1100 break;
1101 case OPTION_WARN_CONSTRUCTORS:
b34976b6 1102 config.warn_constructors = TRUE;
252b5132 1103 break;
7ce691ae 1104 case OPTION_WARN_FATAL:
b34976b6 1105 config.fatal_warnings = TRUE;
7ce691ae 1106 break;
252b5132 1107 case OPTION_WARN_MULTIPLE_GP:
b34976b6 1108 config.warn_multiple_gp = TRUE;
252b5132
RH		 1109 break;
1110 case OPTION_WARN_ONCE:
b34976b6 1111 config.warn_once = TRUE;
252b5132
RH		 1112 break;
1113 case OPTION_WARN_SECTION_ALIGN:
b34976b6 1114 config.warn_section_align = TRUE;
252b5132
RH		 1115 break;
1116 case OPTION_WHOLE_ARCHIVE:
b34976b6 1117 whole_archive = TRUE;
252b5132
RH		 1118 break;
1119 case OPTION_WRAP:
1120 add_wrap (optarg);
1121 break;
f5fa8ca2
JJ		 1122 case OPTION_DISCARD_NONE:
1123 link_info.discard = discard_none;
1124 break;
252b5132
RH		 1125 case 'X':
1126 link_info.discard = discard_l;
1127 break;
1128 case 'x':
1129 link_info.discard = discard_all;
1130 break;
1131 case 'Y':
1132 if (strncmp (optarg, "P,", 2) == 0)
1133 optarg += 2;
5ed6aba4
NC		 1134 if (default_dirlist != NULL)
1135 free (default_dirlist);
252b5132
RH		 1136 default_dirlist = xstrdup (optarg);
1137 break;
1138 case 'y':
1139 add_ysym (optarg);
1140 break;
db6751f2
JJ		 1141 case OPTION_SPARE_DYNAMIC_TAGS:
1142 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1143 break;
252b5132 1144 case OPTION_SPLIT_BY_RELOC:
a854a4a7
AM		 1145 if (optarg != NULL)
1146 config.split_by_reloc = strtoul (optarg, NULL, 0);
1147 else
1148 config.split_by_reloc = 32768;
5cc18311 1149 break;
252b5132 1150 case OPTION_SPLIT_BY_FILE:
a854a4a7
AM		 1151 if (optarg != NULL)
1152 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1153 else
1154 config.split_by_file = 1;
5cc18311 1155 break;
252b5132 1156 case OPTION_CHECK_SECTIONS:
b34976b6 1157 command_line.check_section_addresses = TRUE;
252b5132
RH		 1158 break;
1159 case OPTION_NO_CHECK_SECTIONS:
b34976b6 1160 command_line.check_section_addresses = FALSE;
252b5132 1161 break;
312b768e
NC		 1162 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1163 command_line.accept_unknown_input_arch = TRUE;
1164 break;
1165 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1166 command_line.accept_unknown_input_arch = FALSE;
1167 break;
252b5132
RH		 1168 case '(':
1169 if (ingroup)
210a7bd1
NC		 1170 einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1171
252b5132
RH		 1172 lang_enter_group ();
1173 ingroup = 1;
1174 break;
1175 case ')':
1176 if (! ingroup)
210a7bd1
NC		 1177 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1178
252b5132
RH		 1179 lang_leave_group ();
1180 ingroup = 0;
1181 break;
e47d05ad 1182 case OPTION_MPC860C0:
210a7bd1
NC		 1183 /* Default value (in bytes). */
1184 link_info.mpc860c0 = 20;
e47d05ad
KH		 1185 if (optarg)
1186 {
1187 unsigned words;
252b5132 1188
e47d05ad
KH		 1189 words = is_num (optarg, 1, 10, 0);
1190 if (words == 0)
210a7bd1
NC		 1191 einfo (_("%P%F: invalid argument to option \"mpc860c0\"\n"));
1192
1193 /* Convert words to bytes. */
1194 link_info.mpc860c0 = words * 4;
e47d05ad 1195 }
b34976b6 1196 command_line.relax = TRUE;
e47d05ad 1197 break;
3dbf70a2
MM		 1198
1199 case OPTION_INIT:
1200 link_info.init_function = optarg;
1201 break;
5cc18311 1202
3dbf70a2
MM		 1203 case OPTION_FINI:
1204 link_info.fini_function = optarg;
1205 break;
252b5132
RH		 1206 }
1207 }
1208
1209 if (ingroup)
1210 lang_leave_group ();
1211
1212 if (default_dirlist != NULL)
5ed6aba4
NC		 1213 {
1214 set_default_dirlist (default_dirlist);
1215 free (default_dirlist);
1216 }
252b5132
RH		 1217}
1218
1219/* Add the (colon-separated) elements of DIRLIST_PTR to the
1220 library search path. */
1221
1222static void
1223set_default_dirlist (dirlist_ptr)
1224 char *dirlist_ptr;
1225{
1226 char *p;
1227
1228 while (1)
1229 {
1230 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1231 if (p != NULL)
1232 *p = '\0';
1233 if (*dirlist_ptr != '\0')
b34976b6 1234 ldfile_add_library_path (dirlist_ptr, TRUE);
252b5132
RH		 1235 if (p == NULL)
1236 break;
1237 dirlist_ptr = p + 1;
1238 }
1239}
1240
1241static void
1242set_section_start (sect, valstr)
1243 char *sect, *valstr;
1244{
93697284
AM		 1245 const char *end;
1246 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
252b5132
RH		 1247 if (*end)
1248 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1249 lang_section_start (sect, exp_intop (val));
1250}
1251\f
1252/* Print help messages for the options. */
1253
1254static void
1255help ()
1256{
e4897a32 1257 unsigned i;
252b5132
RH		 1258 const char **targets, **pp;
1259
1260 printf (_("Usage: %s [options] file...\n"), program_name);
1261
1262 printf (_("Options:\n"));
1263 for (i = 0; i < OPTION_COUNT; i++)
1264 {
1265 if (ld_options[i].doc != NULL)
1266 {
b34976b6 1267 bfd_boolean comma;
252b5132 1268 int len;
e4897a32 1269 unsigned j;
252b5132
RH		 1270
1271 printf (" ");
1272
b34976b6 1273 comma = FALSE;
252b5132
RH		 1274 len = 2;
1275
1276 j = i;
1277 do
1278 {
1279 if (ld_options[j].shortopt != '\0'
1280 && ld_options[j].control != NO_HELP)
1281 {
1282 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1283 len += (comma ? 2 : 0) + 2;
1284 if (ld_options[j].arg != NULL)
1285 {
1286 if (ld_options[j].opt.has_arg != optional_argument)
1287 {
1288 printf (" ");
1289 ++len;
1290 }
1291 printf ("%s", _(ld_options[j].arg));
1292 len += strlen (_(ld_options[j].arg));
1293 }
b34976b6 1294 comma = TRUE;
252b5132
RH		 1295 }
1296 ++j;
1297 }
1298 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1299
1300 j = i;
1301 do
1302 {
1303 if (ld_options[j].opt.name != NULL
1304 && ld_options[j].control != NO_HELP)
1305 {
e4897a32
NC		 1306 int two_dashes =
1307 (ld_options[j].control == TWO_DASHES
1308 || ld_options[j].control == EXACTLY_TWO_DASHES);
b7a26f91 1309
252b5132
RH		 1310 printf ("%s-%s%s",
1311 comma ? ", " : "",
e4897a32 1312 two_dashes ? "-" : "",
252b5132
RH		 1313 ld_options[j].opt.name);
1314 len += ((comma ? 2 : 0)
1315 + 1
e4897a32 1316 + (two_dashes ? 1 : 0)
252b5132
RH		 1317 + strlen (ld_options[j].opt.name));
1318 if (ld_options[j].arg != NULL)
1319 {
1320 printf (" %s", _(ld_options[j].arg));
1321 len += 1 + strlen (_(ld_options[j].arg));
1322 }
b34976b6 1323 comma = TRUE;
252b5132
RH		 1324 }
1325 ++j;
1326 }
1327 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1328
1329 if (len >= 30)
1330 {
1331 printf ("\n");
1332 len = 0;
1333 }
1334
1335 for (; len < 30; len++)
1336 putchar (' ');
1337
1338 printf ("%s\n", _(ld_options[i].doc));
1339 }
1340 }
1341
f75692fe
NC		 1342 /* Note: Various tools (such as libtool) depend upon the
1343 format of the listings below - do not change them. */
252b5132 1344 /* xgettext:c-format */
f75692fe 1345 printf (_("%s: supported targets:"), program_name);
252b5132
RH		 1346 targets = bfd_target_list ();
1347 for (pp = targets; *pp != NULL; pp++)
1348 printf (" %s", *pp);
1349 free (targets);
1350 printf ("\n");
1351
1352 /* xgettext:c-format */
f75692fe 1353 printf (_("%s: supported emulations: "), program_name);
252b5132
RH		 1354 ldemul_list_emulations (stdout);
1355 printf ("\n");
1356
1357 /* xgettext:c-format */
1358 printf (_("%s: emulation specific options:\n"), program_name);
1359 ldemul_list_emulation_options (stdout);
1360 printf ("\n");
c20f4f8c 1361
8ad3436c 1362 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
252b5132 1363}
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