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[deliverable/binutils-gdb.git] / ld / lexsup.c
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252b5132 1/* Parse options for the GNU linker.
a2b64bed
NC		 2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001
252b5132
RH		 4 Free Software Foundation, Inc.
5
6This file is part of GLD, the Gnu Linker.
7
8GLD is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2, or (at your option)
11any later version.
12
13GLD is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with GLD; see the file COPYING. If not, write to the Free
20Software Foundation, 59 Temple Place - Suite 330, Boston, MA
2102111-1307, USA. */
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"
36#include "ldgram.h"
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
56/* Omit args to avoid the possibility of clashing with a system header
57 that might disagree about consts. */
58unsigned long strtoul ();
59
3d9f6277 60static int is_num PARAMS ((const char *, int, int, int));
252b5132
RH		 61static void set_default_dirlist PARAMS ((char *dirlist_ptr));
62static void set_section_start PARAMS ((char *sect, char *valstr));
63static void help PARAMS ((void));
64
65/* Non-zero if we are processing a --defsym from the command line. */
66int parsing_defsym = 0;
67
68/* Codes used for the long options with no short synonyms. 150 isn't
69 special; it's just an arbitrary non-ASCII char value. */
70
71#define OPTION_ASSERT 150
72#define OPTION_CALL_SHARED (OPTION_ASSERT + 1)
73#define OPTION_CREF (OPTION_CALL_SHARED + 1)
74#define OPTION_DEFSYM (OPTION_CREF + 1)
75#define OPTION_DEMANGLE (OPTION_DEFSYM + 1)
76#define OPTION_DYNAMIC_LINKER (OPTION_DEMANGLE + 1)
77#define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
78#define OPTION_EL (OPTION_EB + 1)
79#define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1)
80#define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
81#define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
82#define OPTION_IGNORE (OPTION_HELP + 1)
83#define OPTION_MAP (OPTION_IGNORE + 1)
84#define OPTION_NO_DEMANGLE (OPTION_MAP + 1)
85#define OPTION_NO_KEEP_MEMORY (OPTION_NO_DEMANGLE + 1)
86#define OPTION_NO_WARN_MISMATCH (OPTION_NO_KEEP_MEMORY + 1)
87#define OPTION_NOINHIBIT_EXEC (OPTION_NO_WARN_MISMATCH + 1)
88#define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
89#define OPTION_NO_WHOLE_ARCHIVE (OPTION_NON_SHARED + 1)
90#define OPTION_OFORMAT (OPTION_NO_WHOLE_ARCHIVE + 1)
91#define OPTION_RELAX (OPTION_OFORMAT + 1)
92#define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
93#define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
94#define OPTION_RPATH_LINK (OPTION_RPATH + 1)
95#define OPTION_SHARED (OPTION_RPATH_LINK + 1)
96#define OPTION_SONAME (OPTION_SHARED + 1)
97#define OPTION_SORT_COMMON (OPTION_SONAME + 1)
98#define OPTION_STATS (OPTION_SORT_COMMON + 1)
99#define OPTION_SYMBOLIC (OPTION_STATS + 1)
100#define OPTION_TASK_LINK (OPTION_SYMBOLIC + 1)
101#define OPTION_TBSS (OPTION_TASK_LINK + 1)
102#define OPTION_TDATA (OPTION_TBSS + 1)
103#define OPTION_TTEXT (OPTION_TDATA + 1)
104#define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
105#define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
106#define OPTION_VERBOSE (OPTION_UR + 1)
107#define OPTION_VERSION (OPTION_VERBOSE + 1)
108#define OPTION_VERSION_SCRIPT (OPTION_VERSION + 1)
109#define OPTION_VERSION_EXPORTS_SECTION (OPTION_VERSION_SCRIPT + 1)
110#define OPTION_WARN_COMMON (OPTION_VERSION_EXPORTS_SECTION + 1)
111#define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1)
7ce691ae
C		 112#define OPTION_WARN_FATAL (OPTION_WARN_CONSTRUCTORS + 1)
113#define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_FATAL + 1)
252b5132
RH		 114#define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1)
115#define OPTION_WARN_SECTION_ALIGN (OPTION_WARN_ONCE + 1)
116#define OPTION_SPLIT_BY_RELOC (OPTION_WARN_SECTION_ALIGN + 1)
117#define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
118#define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
119#define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1)
120#define OPTION_FORCE_EXE_SUFFIX (OPTION_WRAP + 1)
121#define OPTION_GC_SECTIONS (OPTION_FORCE_EXE_SUFFIX + 1)
122#define OPTION_NO_GC_SECTIONS (OPTION_GC_SECTIONS + 1)
123#define OPTION_CHECK_SECTIONS (OPTION_NO_GC_SECTIONS + 1)
124#define OPTION_NO_CHECK_SECTIONS (OPTION_CHECK_SECTIONS + 1)
125#define OPTION_MPC860C0 (OPTION_NO_CHECK_SECTIONS + 1)
126#define OPTION_NO_UNDEFINED (OPTION_MPC860C0 + 1)
3dbf70a2
MM		 127#define OPTION_INIT (OPTION_NO_UNDEFINED + 1)
128#define OPTION_FINI (OPTION_INIT + 1)
176355da 129#define OPTION_SECTION_START (OPTION_FINI + 1)
a854a4a7 130#define OPTION_UNIQUE (OPTION_SECTION_START + 1)
ea20a7da 131#define OPTION_TARGET_HELP (OPTION_UNIQUE + 1)
b79e8c78 132#define OPTION_ALLOW_SHLIB_UNDEFINED (OPTION_TARGET_HELP + 1)
f5fa8ca2 133#define OPTION_DISCARD_NONE (OPTION_ALLOW_SHLIB_UNDEFINED + 1)
db6751f2 134#define OPTION_SPARE_DYNAMIC_TAGS (OPTION_DISCARD_NONE + 1)
4818e05f 135#define OPTION_NO_DEFINE_COMMON (OPTION_SPARE_DYNAMIC_TAGS + 1)
252b5132
RH		 136
137/* The long options. This structure is used for both the option
138 parsing and the help text. */
139
b79e8c78
NC		 140struct ld_option
141{
252b5132
RH		 142 /* The long option information. */
143 struct option opt;
144 /* The short option with the same meaning ('\0' if none). */
145 char shortopt;
146 /* The name of the argument (NULL if none). */
147 const char *arg;
148 /* The documentation string. If this is NULL, this is a synonym for
149 the previous option. */
150 const char *doc;
e47d05ad
KH		 151 enum {
152 /* Use one dash before long option name. */
153 ONE_DASH,
154 /* Use two dashes before long option name. */
155 TWO_DASHES,
e4897a32
NC		 156 /* Only accept two dashes before the long option name.
157 This is an overloading of the use of this enum, since originally it
158 was only intended to tell the --help display function how to display
159 the long option name. This feature was added in order to resolve
160 the confusion about the -omagic command line switch. Is it setting
161 the output file name to "magic" or is it setting the NMAGIC flag on
162 the output ? It has been decided that it is setting the output file
163 name, and that if you want to set the NMAGIC flag you should use -N
164 or --omagic. */
165 EXACTLY_TWO_DASHES,
e47d05ad
KH		 166 /* Don't mention this option in --help output. */
167 NO_HELP
168 } control;
252b5132
RH		 169};
170
b79e8c78
NC		 171static const struct ld_option ld_options[] =
172{
252b5132
RH		 173 { {NULL, required_argument, NULL, '\0'},
174 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
175 ONE_DASH },
176 { {"architecture", required_argument, NULL, 'A'},
177 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
178 { {"format", required_argument, NULL, 'b'},
179 'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES },
180 { {"mri-script", required_argument, NULL, 'c'},
181 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
182 { {"dc", no_argument, NULL, 'd'},
183 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
184 { {"dp", no_argument, NULL, 'd'},
185 '\0', NULL, NULL, ONE_DASH },
186 { {"entry", required_argument, NULL, 'e'},
187 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
188 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
189 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
190 { {"EB", no_argument, NULL, OPTION_EB},
191 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
192 { {"EL", no_argument, NULL, OPTION_EL},
193 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
194 { {"auxiliary", required_argument, NULL, 'f'},
195 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
196 TWO_DASHES },
197 { {"filter", required_argument, NULL, 'F'},
198 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES },
199 { {NULL, no_argument, NULL, '\0'},
200 'g', NULL, N_("Ignored"), ONE_DASH },
201 { {"gpsize", required_argument, NULL, 'G'},
202 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
203 TWO_DASHES },
204 { {"soname", required_argument, NULL, OPTION_SONAME},
205 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
506eee22
NC		 206 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
207 'I', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES },
252b5132
RH		 208 { {"library", required_argument, NULL, 'l'},
209 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
210 { {"library-path", required_argument, NULL, 'L'},
211 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES },
212 { {NULL, required_argument, NULL, '\0'},
213 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
214 { {"print-map", no_argument, NULL, 'M'},
215 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
216 { {"nmagic", no_argument, NULL, 'n'},
217 'n', NULL, N_("Do not page align data"), TWO_DASHES },
218 { {"omagic", no_argument, NULL, 'N'},
219 'N', NULL, N_("Do not page align data, do not make text readonly"),
e4897a32 220 EXACTLY_TWO_DASHES },
252b5132 221 { {"output", required_argument, NULL, 'o'},
e4897a32 222 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
252b5132
RH		 223 { {NULL, required_argument, NULL, '\0'},
224 'O', NULL, N_("Optimize output file"), ONE_DASH },
225 { {"Qy", no_argument, NULL, OPTION_IGNORE},
226 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
a712da20
NC		 227 { {"emit-relocs", no_argument, NULL, 'q'},
228 'q', NULL, "Generate relocations in final output", TWO_DASHES },
079a8e4a
NC		 229 { {"relocateable", no_argument, NULL, 'r'},
230 'r', NULL, N_("Generate relocateable output"), TWO_DASHES },
252b5132
RH		 231 { {NULL, no_argument, NULL, '\0'},
232 'i', NULL, NULL, ONE_DASH },
233 { {"just-symbols", required_argument, NULL, 'R'},
234 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
235 TWO_DASHES },
236 { {"strip-all", no_argument, NULL, 's'},
237 's', NULL, N_("Strip all symbols"), TWO_DASHES },
238 { {"strip-debug", no_argument, NULL, 'S'},
239 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
240 { {"trace", no_argument, NULL, 't'},
241 't', NULL, N_("Trace file opens"), TWO_DASHES },
242 { {"script", required_argument, NULL, 'T'},
243 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
244 { {"undefined", required_argument, NULL, 'u'},
245 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES },
577a0623
AM		 246 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
247 '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
252b5132
RH		 248 { {"Ur", no_argument, NULL, OPTION_UR},
249 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
250 { {"version", no_argument, NULL, OPTION_VERSION},
251 'v', NULL, N_("Print version information"), TWO_DASHES },
252 { {NULL, no_argument, NULL, '\0'},
253 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
254 { {"discard-all", no_argument, NULL, 'x'},
255 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
256 { {"discard-locals", no_argument, NULL, 'X'},
f5fa8ca2
JJ		 257 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
258 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
259 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
252b5132
RH		 260 { {"trace-symbol", required_argument, NULL, 'y'},
261 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
262 { {NULL, required_argument, NULL, '\0'},
263 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH },
252b5132
RH		 264 { {"start-group", no_argument, NULL, '('},
265 '(', NULL, N_("Start a group"), TWO_DASHES },
266 { {"end-group", no_argument, NULL, ')'},
267 ')', NULL, N_("End a group"), TWO_DASHES },
268 { {"assert", required_argument, NULL, OPTION_ASSERT},
269 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
270 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
271 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
272 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
273 '\0', NULL, NULL, ONE_DASH },
274 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
275 '\0', NULL, NULL, ONE_DASH },
276 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
277 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
278 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
279 '\0', NULL, NULL, ONE_DASH },
280 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
281 '\0', NULL, NULL, ONE_DASH },
282 { {"static", no_argument, NULL, OPTION_NON_SHARED},
283 '\0', NULL, NULL, ONE_DASH },
284 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
285 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
286 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
287 '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
288 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
289 '\0', NULL, N_("Do not check section addresses for overlaps"),
290 TWO_DASHES },
291 { {"cref", no_argument, NULL, OPTION_CREF},
292 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
293 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
294 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
28c309a2
NC		 295 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
296 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES },
252b5132
RH		 297 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
298 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
3dbf70a2
MM		 299 { {"fini", required_argument, NULL, OPTION_FINI},
300 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
252b5132
RH		 301 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
302 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
303 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
304 '\0', NULL, N_("Remove unused sections (on some targets)"),
305 TWO_DASHES },
306 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
307 '\0', NULL, N_("Don't remove unused sections (default)"),
308 TWO_DASHES },
309 { {"help", no_argument, NULL, OPTION_HELP},
310 '\0', NULL, N_("Print option help"), TWO_DASHES },
3dbf70a2
MM		 311 { {"init", required_argument, NULL, OPTION_INIT},
312 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
252b5132
RH		 313 { {"Map", required_argument, NULL, OPTION_MAP},
314 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
4818e05f
AM		 315 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
316 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
252b5132
RH		 317 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
318 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
319 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
320 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
321 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
322 '\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
b79e8c78
NC		 323 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
324 '\0', NULL, N_("Allow undefined symbols in shared objects"), TWO_DASHES },
252b5132
RH		 325 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
326 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
327 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
328 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
329 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
330 '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
331 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
332 '\0', NULL, NULL, NO_HELP },
333 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
e4897a32 334 '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES },
252b5132
RH		 335 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
336 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
337 { {"relax", no_argument, NULL, OPTION_RELAX},
338 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
339 { {"retain-symbols-file", required_argument, NULL,
340 OPTION_RETAIN_SYMBOLS_FILE},
341 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
342 { {"rpath", required_argument, NULL, OPTION_RPATH},
343 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
344 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
345 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
346 { {"shared", no_argument, NULL, OPTION_SHARED},
347 '\0', NULL, N_("Create a shared library"), ONE_DASH },
348 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
349 '\0', NULL, NULL, ONE_DASH },
350 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
351 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
352 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
353 '\0', NULL, NULL, NO_HELP },
db6751f2
JJ		 354 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
355 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), TWO_DASHES },
a854a4a7
AM		 356 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
357 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES },
358 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
359 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
252b5132
RH		 360 { {"stats", no_argument, NULL, OPTION_STATS},
361 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
ea20a7da
CC		 362 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
363 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
252b5132
RH		 364 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
365 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
366 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
367 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
176355da
NC		 368 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
369 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
252b5132
RH		 370 { {"Tbss", required_argument, NULL, OPTION_TBSS},
371 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
372 { {"Tdata", required_argument, NULL, OPTION_TDATA},
373 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
374 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
375 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
376 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
377 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
378 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
379 '\0', NULL, NULL, NO_HELP },
380 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
381 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
382 { {"version-exports-section", required_argument, NULL,
383 OPTION_VERSION_EXPORTS_SECTION },
b3043ee4 384 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
252b5132
RH		 385 TWO_DASHES },
386 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
387 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
388 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
389 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
390 TWO_DASHES },
391 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
392 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
393 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
394 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
395 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
396 '\0', NULL, N_("Warn if start of section changes due to alignment"),
397 TWO_DASHES },
7ce691ae
C		 398 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
399 '\0', NULL, N_("Treat warnings as errors"),
400 TWO_DASHES },
252b5132
RH		 401 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
402 '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
403 { {"wrap", required_argument, NULL, OPTION_WRAP},
404 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
405 { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
b3043ee4 406 '\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		 407};
408
e4897a32 409#define OPTION_COUNT ARRAY_SIZE (ld_options)
252b5132 410
3d9f6277
ILT		 411/* Test STRING for containing a string of digits that form a number
412 between MIN and MAX. The return value is the number or ERR. */
413
414static int
415is_num (string, min, max, err)
416 const char *string;
417 int min;
418 int max;
419 int err;
252b5132
RH		 420{
421 int result = 0;
422
3d9f6277 423 for (; *string; ++string)
252b5132 424 {
3882b010 425 if (! ISDIGIT (*string))
3d9f6277
ILT		 426 {
427 result = err;
428 break;
429 }
430 result = result * 10 + (*string - '0');
252b5132 431 }
252b5132
RH		 432 if (result < min || result > max)
433 result = err;
434
435 return result;
436}
437
438void
439parse_args (argc, argv)
e4897a32 440 unsigned argc;
252b5132
RH		 441 char **argv;
442{
e4897a32
NC		 443 unsigned i;
444 int is, il, irl;
252b5132
RH		 445 int ingroup = 0;
446 char *default_dirlist = NULL;
447 char shortopts[OPTION_COUNT * 3 + 2];
448 struct option longopts[OPTION_COUNT + 1];
e4897a32 449 struct option really_longopts[OPTION_COUNT + 1];
252b5132
RH		 450 int last_optind;
451
452 /* Starting the short option string with '-' is for programs that
453 expect options and other ARGV-elements in any order and that care about
454 the ordering of the two. We describe each non-option ARGV-element
455 as if it were the argument of an option with character code 1. */
456 shortopts[0] = '-';
457 is = 1;
458 il = 0;
e4897a32 459 irl = 0;
252b5132
RH		 460 for (i = 0; i < OPTION_COUNT; i++)
461 {
462 if (ld_options[i].shortopt != '\0')
463 {
464 shortopts[is] = ld_options[i].shortopt;
465 ++is;
466 if (ld_options[i].opt.has_arg == required_argument
467 || ld_options[i].opt.has_arg == optional_argument)
468 {
469 shortopts[is] = ':';
470 ++is;
471 if (ld_options[i].opt.has_arg == optional_argument)
472 {
473 shortopts[is] = ':';
474 ++is;
475 }
476 }
477 }
478 if (ld_options[i].opt.name != NULL)
479 {
e4897a32
NC		 480 if (ld_options[i].control == EXACTLY_TWO_DASHES)
481 {
482 really_longopts[irl] = ld_options[i].opt;
483 ++irl;
484 }
485 else
486 {
487 longopts[il] = ld_options[i].opt;
488 ++il;
489 }
252b5132
RH		 490 }
491 }
492 shortopts[is] = '\0';
493 longopts[il].name = NULL;
e4897a32 494 really_longopts[irl].name = NULL;
252b5132
RH		 495
496 /* The -G option is ambiguous on different platforms. Sometimes it
497 specifies the largest data size to put into the small data
498 section. Sometimes it is equivalent to --shared. Unfortunately,
499 the first form takes an argument, while the second does not.
500
501 We need to permit the --shared form because on some platforms,
502 such as Solaris, gcc -shared will pass -G to the linker.
503
504 To permit either usage, we look through the argument list. If we
505 find -G not followed by a number, we change it into --shared.
506 This will work for most normal cases. */
507 for (i = 1; i < argc; i++)
508 if (strcmp (argv[i], "-G") == 0
509 && (i + 1 >= argc
3882b010 510 || ! ISDIGIT (argv[i + 1][0])))
252b5132
RH		 511 argv[i] = (char *) "--shared";
512
513 /* Because we permit long options to start with a single dash, and
514 we have a --library option, and the -l option is conventionally
515 used with an immediately following argument, we can have bad
516 results if somebody tries to use -l with a library whose name
517 happens to start with "ibrary", as in -li. We avoid problems by
518 simply turning -l into --library. This means that users will
519 have to use two dashes in order to use --library, which is OK
520 since that's how it is documented.
521
522 FIXME: It's possible that this problem can arise for other short
523 options as well, although the user does always have the recourse
524 of adding a space between the option and the argument. */
525 for (i = 1; i < argc; i++)
526 {
527 if (argv[i][0] == '-'
528 && argv[i][1] == 'l'
529 && argv[i][2] != '\0')
530 {
531 char *n;
532
533 n = (char *) xmalloc (strlen (argv[i]) + 20);
534 sprintf (n, "--library=%s", argv[i] + 2);
535 argv[i] = n;
536 }
537 }
538
539 last_optind = -1;
540 while (1)
541 {
5af9fd8b 542 int longind, errind;
252b5132
RH		 543 int optc;
544
545 /* Using last_optind lets us avoid calling ldemul_parse_args
546 multiple times on a single option, which would lead to
547 confusion in the internal static variables maintained by
548 getopt. This could otherwise happen for an argument like
549 -nx, in which the -n is parsed as a single option, and we
550 loop around to pick up the -x. */
551 if (optind != last_optind)
552 {
553 if (ldemul_parse_args (argc, argv))
554 continue;
555 last_optind = optind;
556 }
557
558 /* getopt_long_only is like getopt_long, but '-' as well as '--'
559 can indicate a long option. */
0fc3347a 560 opterr = 0;
5af9fd8b 561 errind = optind;
252b5132 562 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
0fc3347a
NC		 563 if (optc == '?')
564 {
565 --optind;
566 optc = getopt_long (argc, argv, shortopts, really_longopts, &longind);
567 }
b7ed8fad 568
252b5132
RH		 569 if (optc == -1)
570 break;
0fc3347a 571
252b5132
RH		 572 switch (optc)
573 {
0fc3347a 574 case '?':
210a7bd1 575 einfo (_("%P: unrecognized option '%s'\n"), argv[errind]);
252b5132 576 default:
210a7bd1
NC		 577 einfo (_("%P%F: use the --help option for usage information\n"));
578
252b5132
RH		 579 case 1: /* File name. */
580 lang_add_input_file (optarg, lang_input_file_is_file_enum,
581 (char *) NULL);
582 break;
583
584 case OPTION_IGNORE:
585 break;
586 case 'a':
587 /* For HP/UX compatibility. Actually -a shared should mean
588 ``use only shared libraries'' but, then, we don't
589 currently support shared libraries on HP/UX anyhow. */
590 if (strcmp (optarg, "archive") == 0)
591 config.dynamic_link = false;
592 else if (strcmp (optarg, "shared") == 0
593 || strcmp (optarg, "default") == 0)
594 config.dynamic_link = true;
595 else
596 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
597 break;
598 case OPTION_ASSERT:
599 /* FIXME: We just ignore these, but we should handle them. */
600 if (strcmp (optarg, "definitions") == 0)
601 ;
602 else if (strcmp (optarg, "nodefinitions") == 0)
603 ;
604 else if (strcmp (optarg, "nosymbolic") == 0)
605 ;
606 else if (strcmp (optarg, "pure-text") == 0)
607 ;
608 else
609 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
610 break;
611 case 'A':
612 ldfile_add_arch (optarg);
613 break;
614 case 'b':
615 lang_add_target (optarg);
616 break;
617 case 'c':
618 ldfile_open_command_file (optarg);
619 parser_input = input_mri_script;
620 yyparse ();
621 break;
622 case OPTION_CALL_SHARED:
623 config.dynamic_link = true;
624 break;
625 case OPTION_NON_SHARED:
626 config.dynamic_link = false;
627 break;
628 case OPTION_CREF:
629 command_line.cref = true;
630 link_info.notice_all = true;
631 break;
632 case 'd':
633 command_line.force_common_definition = true;
634 break;
635 case OPTION_DEFSYM:
636 lex_string = optarg;
637 lex_redirect (optarg);
638 parser_input = input_defsym;
639 parsing_defsym = 1;
640 yyparse ();
641 parsing_defsym = 0;
642 lex_string = NULL;
643 break;
644 case OPTION_DEMANGLE:
645 demangling = true;
28c309a2
NC		 646 if (optarg != NULL)
647 {
648 enum demangling_styles style;
5cc18311 649
28c309a2 650 style = cplus_demangle_name_to_style (optarg);
5cc18311 651 if (style == unknown_demangling)
28c309a2
NC		 652 einfo (_("%F%P: unknown demangling style `%s'"),
653 optarg);
5cc18311 654
28c309a2 655 cplus_demangle_set_style (style);
e47d05ad 656 }
252b5132 657 break;
506eee22 658 case 'I': /* Used on Solaris. */
252b5132
RH		 659 case OPTION_DYNAMIC_LINKER:
660 command_line.interpreter = optarg;
661 break;
662 case OPTION_EB:
663 command_line.endian = ENDIAN_BIG;
664 break;
665 case OPTION_EL:
666 command_line.endian = ENDIAN_LITTLE;
667 break;
668 case OPTION_EMBEDDED_RELOCS:
669 command_line.embedded_relocs = true;
670 break;
671 case OPTION_EXPORT_DYNAMIC:
672 case 'E': /* HP/UX compatibility. */
2a096f04 673 link_info.export_dynamic = true;
252b5132
RH		 674 break;
675 case 'e':
676 lang_add_entry (optarg, true);
677 break;
678 case 'f':
679 if (command_line.auxiliary_filters == NULL)
680 {
681 command_line.auxiliary_filters =
682 (char **) xmalloc (2 * sizeof (char *));
683 command_line.auxiliary_filters[0] = optarg;
684 command_line.auxiliary_filters[1] = NULL;
685 }
686 else
687 {
688 int c;
689 char **p;
690
691 c = 0;
692 for (p = command_line.auxiliary_filters; *p != NULL; p++)
693 ++c;
694 command_line.auxiliary_filters =
695 (char **) xrealloc (command_line.auxiliary_filters,
696 (c + 2) * sizeof (char *));
697 command_line.auxiliary_filters[c] = optarg;
698 command_line.auxiliary_filters[c + 1] = NULL;
699 }
700 break;
701 case 'F':
702 command_line.filter_shlib = optarg;
703 break;
704 case OPTION_FORCE_EXE_SUFFIX:
705 command_line.force_exe_suffix = true;
706 break;
707 case 'G':
708 {
709 char *end;
710 g_switch_value = strtoul (optarg, &end, 0);
711 if (*end)
712 einfo (_("%P%F: invalid number `%s'\n"), optarg);
713 }
714 break;
715 case 'g':
716 /* Ignore. */
717 break;
718 case OPTION_GC_SECTIONS:
719 command_line.gc_sections = true;
720 break;
721 case OPTION_HELP:
722 help ();
723 xexit (0);
724 break;
725 case 'L':
726 ldfile_add_library_path (optarg, true);
727 break;
728 case 'l':
729 lang_add_input_file (optarg, lang_input_file_is_l_enum,
730 (char *) NULL);
731 break;
732 case 'M':
733 config.map_filename = "-";
734 break;
735 case 'm':
736 /* Ignore. Was handled in a pre-parse. */
737 break;
738 case OPTION_MAP:
739 config.map_filename = optarg;
740 break;
741 case 'N':
742 config.text_read_only = false;
743 config.magic_demand_paged = false;
744 config.dynamic_link = false;
745 break;
746 case 'n':
747 config.magic_demand_paged = false;
748 config.dynamic_link = false;
749 break;
4818e05f
AM		 750 case OPTION_NO_DEFINE_COMMON:
751 command_line.inhibit_common_definition = true;
752 break;
252b5132
RH		 753 case OPTION_NO_DEMANGLE:
754 demangling = false;
755 break;
756 case OPTION_NO_GC_SECTIONS:
757 command_line.gc_sections = false;
758 break;
759 case OPTION_NO_KEEP_MEMORY:
760 link_info.keep_memory = false;
761 break;
762 case OPTION_NO_UNDEFINED:
763 link_info.no_undefined = true;
764 break;
b79e8c78
NC		 765 case OPTION_ALLOW_SHLIB_UNDEFINED:
766 link_info.allow_shlib_undefined = true;
767 break;
252b5132
RH		 768 case OPTION_NO_WARN_MISMATCH:
769 command_line.warn_mismatch = false;
770 break;
771 case OPTION_NOINHIBIT_EXEC:
772 force_make_executable = true;
773 break;
774 case OPTION_NO_WHOLE_ARCHIVE:
775 whole_archive = false;
776 break;
777 case 'O':
778 /* FIXME "-O<non-digits> <value>" used to set the address of
779 section <non-digits>. Was this for compatibility with
780 something, or can we create a new option to do that
781 (with a syntax similar to -defsym)?
782 getopt can't handle two args to an option without kludges. */
783
784 /* Enable optimizations of output files. */
785 link_info.optimize = strtoul (optarg, NULL, 0) ? true : false;
786 break;
787 case 'o':
5cc18311 788 lang_add_output (optarg, 0);
252b5132
RH		 789 break;
790 case OPTION_OFORMAT:
791 lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
792 break;
a712da20
NC		 793 case 'q':
794 link_info.emitrelocations = true;
795 break;
8c5ff972 796 case 'i':
252b5132 797 case 'r':
210a7bd1
NC		 798 if (optind == last_optind)
799 /* This can happen if the user put "-rpath,a" on the command
800 line. (Or something similar. The comma is important).
801 Getopt becomes confused and thinks that this is a -r option
802 but it cannot parse the text after the -r so it refuses to
803 increment the optind counter. Detect this case and issue
804 an error message here. We cannot just make this a warning,
805 increment optind, and continue because getopt is too confused
806 and will seg-fault the next time around. */
807 einfo(_("%P%F: bad -rpath option\n"));
808
252b5132
RH		 809 link_info.relocateable = true;
810 config.build_constructors = false;
811 config.magic_demand_paged = false;
812 config.text_read_only = false;
813 config.dynamic_link = false;
814 break;
815 case 'R':
816 /* The GNU linker traditionally uses -R to mean to include
817 only the symbols from a file. The Solaris linker uses -R
818 to set the path used by the runtime linker to find
819 libraries. This is the GNU linker -rpath argument. We
820 try to support both simultaneously by checking the file
821 named. If it is a directory, rather than a regular file,
822 we assume -rpath was meant. */
823 {
824 struct stat s;
825
826 if (stat (optarg, &s) >= 0
827 && ! S_ISDIR (s.st_mode))
828 {
829 lang_add_input_file (optarg,
830 lang_input_file_is_symbols_only_enum,
831 (char *) NULL);
832 break;
833 }
834 }
835 /* Fall through. */
836 case OPTION_RPATH:
837 if (command_line.rpath == NULL)
d1b2b2dc 838 command_line.rpath = xstrdup (optarg);
252b5132
RH		 839 else
840 {
841 size_t rpath_len = strlen (command_line.rpath);
842 size_t optarg_len = strlen (optarg);
843 char *buf;
844 char *cp = command_line.rpath;
845
846 /* First see whether OPTARG is already in the path. */
847 do
848 {
849 size_t idx = 0;
210a7bd1 850
252b5132
RH		 851 while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
852 ++idx;
853 if (optarg[idx] == '\0'
854 && (cp[idx] == '\0' || cp[idx] == ':'))
855 /* We found it. */
856 break;
857
858 /* Not yet found. */
859 cp = strchr (cp, ':');
860 if (cp != NULL)
861 ++cp;
862 }
863 while (cp != NULL);
864
865 if (cp == NULL)
866 {
867 buf = xmalloc (rpath_len + optarg_len + 2);
868 sprintf (buf, "%s:%s", command_line.rpath, optarg);
869 free (command_line.rpath);
870 command_line.rpath = buf;
871 }
872 }
873 break;
874 case OPTION_RPATH_LINK:
875 if (command_line.rpath_link == NULL)
d1b2b2dc 876 command_line.rpath_link = xstrdup (optarg);
252b5132
RH		 877 else
878 {
879 char *buf;
880
881 buf = xmalloc (strlen (command_line.rpath_link)
882 + strlen (optarg)
883 + 2);
884 sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
885 free (command_line.rpath_link);
886 command_line.rpath_link = buf;
887 }
888 break;
889 case OPTION_RELAX:
890 command_line.relax = true;
891 break;
892 case OPTION_RETAIN_SYMBOLS_FILE:
893 add_keepsyms_file (optarg);
894 break;
895 case 'S':
896 link_info.strip = strip_debugger;
897 break;
898 case 's':
899 link_info.strip = strip_all;
900 break;
901 case OPTION_SHARED:
902 if (config.has_shared)
903 link_info.shared = true;
904 else
905 einfo (_("%P%F: -shared not supported\n"));
906 break;
907 case 'h': /* Used on Solaris. */
908 case OPTION_SONAME:
909 command_line.soname = optarg;
910 break;
911 case OPTION_SORT_COMMON:
912 config.sort_common = true;
913 break;
914 case OPTION_STATS:
915 config.stats = true;
916 break;
917 case OPTION_SYMBOLIC:
918 link_info.symbolic = true;
919 break;
920 case 't':
921 trace_files = true;
922 break;
923 case 'T':
924 ldfile_open_command_file (optarg);
925 parser_input = input_script;
926 yyparse ();
927 break;
176355da
NC		 928 case OPTION_SECTION_START:
929 {
930 char *optarg2;
227aeb07
AM		 931 char *sec_name;
932 int len;
176355da
NC		 933
934 /* Check for <something>=<somthing>... */
935 optarg2 = strchr (optarg, '=');
936 if (optarg2 == NULL)
210a7bd1 937 einfo (_("%P%F: invalid argument to option \"--section-start\"\n"));
176355da 938
e47d05ad 939 optarg2++;
5cc18311 940
176355da
NC		 941 /* So far so good. Are all the args present? */
942 if ((*optarg == '\0') || (*optarg2 == '\0'))
210a7bd1 943 einfo (_("%P%F: missing argument(s) to option \"--section-start\"\n"));
176355da 944
227aeb07
AM		 945 /* We must copy the section name as set_section_start
946 doesn't do it for us. */
947 len = optarg2 - optarg;
948 sec_name = xmalloc (len);
949 memcpy (sec_name, optarg, len - 1);
950 sec_name[len - 1] = 0;
176355da
NC		 951
952 /* Then set it... */
227aeb07 953 set_section_start (sec_name, optarg2);
176355da
NC		 954 }
955 break;
ea20a7da
CC		 956 case OPTION_TARGET_HELP:
957 /* Mention any target specific options. */
958 ldemul_list_emulation_options (stdout);
959 exit (0);
252b5132
RH		 960 case OPTION_TBSS:
961 set_section_start (".bss", optarg);
962 break;
963 case OPTION_TDATA:
964 set_section_start (".data", optarg);
965 break;
966 case OPTION_TTEXT:
967 set_section_start (".text", optarg);
968 break;
969 case OPTION_TRADITIONAL_FORMAT:
970 link_info.traditional_format = true;
971 break;
972 case OPTION_TASK_LINK:
973 link_info.task_link = true;
974 /* Fall through - do an implied -r option. */
975 case OPTION_UR:
976 link_info.relocateable = true;
977 config.build_constructors = true;
978 config.magic_demand_paged = false;
979 config.text_read_only = false;
980 config.dynamic_link = false;
981 break;
982 case 'u':
983 ldlang_add_undef (optarg);
984 break;
a854a4a7 985 case OPTION_UNIQUE:
577a0623
AM		 986 if (optarg != NULL)
987 lang_add_unique (optarg);
988 else
989 config.unique_orphan_sections = true;
a854a4a7 990 break;
252b5132
RH		 991 case OPTION_VERBOSE:
992 ldversion (1);
993 version_printed = true;
994 trace_file_tries = true;
995 break;
996 case 'v':
997 ldversion (0);
998 version_printed = true;
999 break;
1000 case 'V':
1001 ldversion (1);
1002 version_printed = true;
1003 break;
1004 case OPTION_VERSION:
d32820f2 1005 ldversion (2);
252b5132
RH		 1006 xexit (0);
1007 break;
1008 case OPTION_VERSION_SCRIPT:
1009 /* This option indicates a small script that only specifies
1010 version information. Read it, but don't assume that
1011 we've seen a linker script. */
1012 {
b9a8de1e 1013 FILE * hold_script_handle;
252b5132 1014
b9a8de1e 1015 hold_script_handle = saved_script_handle;
252b5132 1016 ldfile_open_command_file (optarg);
b9a8de1e 1017 saved_script_handle = hold_script_handle;
252b5132
RH		 1018 parser_input = input_version_script;
1019 yyparse ();
1020 }
1021 break;
1022 case OPTION_VERSION_EXPORTS_SECTION:
1023 /* This option records a version symbol to be applied to the
1024 symbols listed for export to be found in the object files
1025 .exports sections. */
1026 command_line.version_exports_section = optarg;
1027 break;
1028 case OPTION_WARN_COMMON:
1029 config.warn_common = true;
1030 break;
1031 case OPTION_WARN_CONSTRUCTORS:
1032 config.warn_constructors = true;
1033 break;
7ce691ae
C		 1034 case OPTION_WARN_FATAL:
1035 config.fatal_warnings = true;
1036 break;
252b5132
RH		 1037 case OPTION_WARN_MULTIPLE_GP:
1038 config.warn_multiple_gp = true;
1039 break;
1040 case OPTION_WARN_ONCE:
1041 config.warn_once = true;
1042 break;
1043 case OPTION_WARN_SECTION_ALIGN:
1044 config.warn_section_align = true;
1045 break;
1046 case OPTION_WHOLE_ARCHIVE:
1047 whole_archive = true;
1048 break;
1049 case OPTION_WRAP:
1050 add_wrap (optarg);
1051 break;
f5fa8ca2
JJ		 1052 case OPTION_DISCARD_NONE:
1053 link_info.discard = discard_none;
1054 break;
252b5132
RH		 1055 case 'X':
1056 link_info.discard = discard_l;
1057 break;
1058 case 'x':
1059 link_info.discard = discard_all;
1060 break;
1061 case 'Y':
1062 if (strncmp (optarg, "P,", 2) == 0)
1063 optarg += 2;
1064 default_dirlist = xstrdup (optarg);
1065 break;
1066 case 'y':
1067 add_ysym (optarg);
1068 break;
db6751f2
JJ		 1069 case OPTION_SPARE_DYNAMIC_TAGS:
1070 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1071 break;
252b5132 1072 case OPTION_SPLIT_BY_RELOC:
a854a4a7
AM		 1073 if (optarg != NULL)
1074 config.split_by_reloc = strtoul (optarg, NULL, 0);
1075 else
1076 config.split_by_reloc = 32768;
5cc18311 1077 break;
252b5132 1078 case OPTION_SPLIT_BY_FILE:
a854a4a7
AM		 1079 if (optarg != NULL)
1080 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1081 else
1082 config.split_by_file = 1;
5cc18311 1083 break;
252b5132
RH		 1084 case OPTION_CHECK_SECTIONS:
1085 command_line.check_section_addresses = true;
1086 break;
1087 case OPTION_NO_CHECK_SECTIONS:
1088 command_line.check_section_addresses = false;
1089 break;
1090 case '(':
1091 if (ingroup)
210a7bd1
NC		 1092 einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1093
252b5132
RH		 1094 lang_enter_group ();
1095 ingroup = 1;
1096 break;
1097 case ')':
1098 if (! ingroup)
210a7bd1
NC		 1099 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1100
252b5132
RH		 1101 lang_leave_group ();
1102 ingroup = 0;
1103 break;
e47d05ad 1104 case OPTION_MPC860C0:
210a7bd1
NC		 1105 /* Default value (in bytes). */
1106 link_info.mpc860c0 = 20;
e47d05ad
KH		 1107 if (optarg)
1108 {
1109 unsigned words;
252b5132 1110
e47d05ad
KH		 1111 words = is_num (optarg, 1, 10, 0);
1112 if (words == 0)
210a7bd1
NC		 1113 einfo (_("%P%F: invalid argument to option \"mpc860c0\"\n"));
1114
1115 /* Convert words to bytes. */
1116 link_info.mpc860c0 = words * 4;
e47d05ad
KH		 1117 }
1118 command_line.relax = true;
1119 break;
3dbf70a2
MM		 1120
1121 case OPTION_INIT:
1122 link_info.init_function = optarg;
1123 break;
5cc18311 1124
3dbf70a2
MM		 1125 case OPTION_FINI:
1126 link_info.fini_function = optarg;
1127 break;
252b5132
RH		 1128 }
1129 }
1130
1131 if (ingroup)
1132 lang_leave_group ();
1133
1134 if (default_dirlist != NULL)
1135 set_default_dirlist (default_dirlist);
1136
1137}
1138
1139/* Add the (colon-separated) elements of DIRLIST_PTR to the
1140 library search path. */
1141
1142static void
1143set_default_dirlist (dirlist_ptr)
1144 char *dirlist_ptr;
1145{
1146 char *p;
1147
1148 while (1)
1149 {
1150 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1151 if (p != NULL)
1152 *p = '\0';
1153 if (*dirlist_ptr != '\0')
1154 ldfile_add_library_path (dirlist_ptr, true);
1155 if (p == NULL)
1156 break;
1157 dirlist_ptr = p + 1;
1158 }
1159}
1160
1161static void
1162set_section_start (sect, valstr)
1163 char *sect, *valstr;
1164{
93697284
AM		 1165 const char *end;
1166 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
252b5132
RH		 1167 if (*end)
1168 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1169 lang_section_start (sect, exp_intop (val));
1170}
1171\f
1172/* Print help messages for the options. */
1173
1174static void
1175help ()
1176{
e4897a32 1177 unsigned i;
252b5132
RH		 1178 const char **targets, **pp;
1179
1180 printf (_("Usage: %s [options] file...\n"), program_name);
1181
1182 printf (_("Options:\n"));
1183 for (i = 0; i < OPTION_COUNT; i++)
1184 {
1185 if (ld_options[i].doc != NULL)
1186 {
1187 boolean comma;
1188 int len;
e4897a32 1189 unsigned j;
252b5132
RH		 1190
1191 printf (" ");
1192
1193 comma = false;
1194 len = 2;
1195
1196 j = i;
1197 do
1198 {
1199 if (ld_options[j].shortopt != '\0'
1200 && ld_options[j].control != NO_HELP)
1201 {
1202 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1203 len += (comma ? 2 : 0) + 2;
1204 if (ld_options[j].arg != NULL)
1205 {
1206 if (ld_options[j].opt.has_arg != optional_argument)
1207 {
1208 printf (" ");
1209 ++len;
1210 }
1211 printf ("%s", _(ld_options[j].arg));
1212 len += strlen (_(ld_options[j].arg));
1213 }
1214 comma = true;
1215 }
1216 ++j;
1217 }
1218 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1219
1220 j = i;
1221 do
1222 {
1223 if (ld_options[j].opt.name != NULL
1224 && ld_options[j].control != NO_HELP)
1225 {
e4897a32
NC		 1226 int two_dashes =
1227 (ld_options[j].control == TWO_DASHES
1228 || ld_options[j].control == EXACTLY_TWO_DASHES);
1229
252b5132
RH		 1230 printf ("%s-%s%s",
1231 comma ? ", " : "",
e4897a32 1232 two_dashes ? "-" : "",
252b5132
RH		 1233 ld_options[j].opt.name);
1234 len += ((comma ? 2 : 0)
1235 + 1
e4897a32 1236 + (two_dashes ? 1 : 0)
252b5132
RH		 1237 + strlen (ld_options[j].opt.name));
1238 if (ld_options[j].arg != NULL)
1239 {
1240 printf (" %s", _(ld_options[j].arg));
1241 len += 1 + strlen (_(ld_options[j].arg));
1242 }
1243 comma = true;
1244 }
1245 ++j;
1246 }
1247 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1248
1249 if (len >= 30)
1250 {
1251 printf ("\n");
1252 len = 0;
1253 }
1254
1255 for (; len < 30; len++)
1256 putchar (' ');
1257
1258 printf ("%s\n", _(ld_options[i].doc));
1259 }
1260 }
1261
f75692fe
NC		 1262 /* Note: Various tools (such as libtool) depend upon the
1263 format of the listings below - do not change them. */
252b5132 1264 /* xgettext:c-format */
f75692fe 1265 printf (_("%s: supported targets:"), program_name);
252b5132
RH		 1266 targets = bfd_target_list ();
1267 for (pp = targets; *pp != NULL; pp++)
1268 printf (" %s", *pp);
1269 free (targets);
1270 printf ("\n");
1271
1272 /* xgettext:c-format */
f75692fe 1273 printf (_("%s: supported emulations: "), program_name);
252b5132
RH		 1274 ldemul_list_emulations (stdout);
1275 printf ("\n");
1276
1277 /* xgettext:c-format */
1278 printf (_("%s: emulation specific options:\n"), program_name);
1279 ldemul_list_emulation_options (stdout);
1280 printf ("\n");
c20f4f8c 1281
8ad3436c 1282 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
252b5132 1283}
GDB Binutils - Deliverables
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