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[binutils.git] / ld / lexsup.c
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1 /* Parse options for the GNU linker.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002
4 Free Software Foundation, Inc.
6 This file is part of GLD, the Gnu Linker.
8 GLD is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
13 GLD is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GLD; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
21 02111-1307, USA. */
23 #include "bfd.h"
24 #include "sysdep.h"
25 #include "libiberty.h"
26 #include <stdio.h>
27 #include <string.h>
28 #include "safe-ctype.h"
29 #include "getopt.h"
30 #include "bfdlink.h"
31 #include "ld.h"
32 #include "ldmain.h"
33 #include "ldmisc.h"
34 #include "ldexp.h"
35 #include "ldlang.h"
36 #include <ldgram.h>
37 #include "ldlex.h"
38 #include "ldfile.h"
39 #include "ldver.h"
40 #include "ldemul.h"
41 #include "demangle.h"
43 #ifndef PATH_SEPARATOR
44 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
45 #define PATH_SEPARATOR ';'
46 #else
47 #define PATH_SEPARATOR ':'
48 #endif
49 #endif
51 /* Somewhere above, sys/stat.h got included . . . . */
52 #if !defined(S_ISDIR) && defined(S_IFDIR)
53 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
54 #endif
56 static int is_num PARAMS ((const char *, int, int, int));
57 static void set_default_dirlist PARAMS ((char *));
58 static void set_section_start PARAMS ((char *, char *));
59 static void help PARAMS ((void));
61 /* Non-zero if we are processing a --defsym from the command line. */
62 int parsing_defsym = 0;
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. */
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)
108 #define OPTION_WARN_FATAL (OPTION_WARN_CONSTRUCTORS + 1)
109 #define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_FATAL + 1)
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)
123 #define OPTION_INIT (OPTION_NO_UNDEFINED + 1)
124 #define OPTION_FINI (OPTION_INIT + 1)
125 #define OPTION_SECTION_START (OPTION_FINI + 1)
126 #define OPTION_UNIQUE (OPTION_SECTION_START + 1)
127 #define OPTION_TARGET_HELP (OPTION_UNIQUE + 1)
128 #define OPTION_ALLOW_SHLIB_UNDEFINED (OPTION_TARGET_HELP + 1)
129 #define OPTION_ALLOW_MULTIPLE_DEFINITION (OPTION_ALLOW_SHLIB_UNDEFINED + 1)
130 #define OPTION_NO_UNDEFINED_VERSION (OPTION_ALLOW_MULTIPLE_DEFINITION + 1)
131 #define OPTION_DISCARD_NONE (OPTION_NO_UNDEFINED_VERSION + 1)
132 #define OPTION_SPARE_DYNAMIC_TAGS (OPTION_DISCARD_NONE + 1)
133 #define OPTION_NO_DEFINE_COMMON (OPTION_SPARE_DYNAMIC_TAGS + 1)
134 #define OPTION_NOSTDLIB (OPTION_NO_DEFINE_COMMON + 1)
135 #define OPTION_NO_OMAGIC (OPTION_NOSTDLIB + 1)
137 /* The long options. This structure is used for both the option
138 parsing and the help text. */
140 struct ld_option
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;
151 enum {
152 /* Use one dash before long option name. */
153 ONE_DASH,
154 /* Use two dashes before long option name. */
155 TWO_DASHES,
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,
166 /* Don't mention this option in --help output. */
167 NO_HELP
168 } control;
171 static const struct ld_option ld_options[] =
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 },
206 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
207 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), TWO_DASHES },
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"),
220 EXACTLY_TWO_DASHES },
221 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
222 '\0', NULL, N_("Page align data, make text readonly"), EXACTLY_TWO_DASHES },
223 { {"output", required_argument, NULL, 'o'},
224 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
225 { {NULL, required_argument, NULL, '\0'},
226 'O', NULL, N_("Optimize output file"), ONE_DASH },
227 { {"Qy", no_argument, NULL, OPTION_IGNORE},
228 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
229 { {"emit-relocs", no_argument, NULL, 'q'},
230 'q', NULL, "Generate relocations in final output", TWO_DASHES },
231 { {"relocateable", no_argument, NULL, 'r'},
232 'r', NULL, N_("Generate relocateable output"), TWO_DASHES },
233 { {NULL, no_argument, NULL, '\0'},
234 'i', NULL, NULL, ONE_DASH },
235 { {"just-symbols", required_argument, NULL, 'R'},
236 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
237 TWO_DASHES },
238 { {"strip-all", no_argument, NULL, 's'},
239 's', NULL, N_("Strip all symbols"), TWO_DASHES },
240 { {"strip-debug", no_argument, NULL, 'S'},
241 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
242 { {"trace", no_argument, NULL, 't'},
243 't', NULL, N_("Trace file opens"), TWO_DASHES },
244 { {"script", required_argument, NULL, 'T'},
245 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
246 { {"undefined", required_argument, NULL, 'u'},
247 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES },
248 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
249 '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
250 { {"Ur", no_argument, NULL, OPTION_UR},
251 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
252 { {"version", no_argument, NULL, OPTION_VERSION},
253 'v', NULL, N_("Print version information"), TWO_DASHES },
254 { {NULL, no_argument, NULL, '\0'},
255 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
256 { {"discard-all", no_argument, NULL, 'x'},
257 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
258 { {"discard-locals", no_argument, NULL, 'X'},
259 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
260 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
261 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
262 { {"trace-symbol", required_argument, NULL, 'y'},
263 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
264 { {NULL, required_argument, NULL, '\0'},
265 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH },
266 { {"start-group", no_argument, NULL, '('},
267 '(', NULL, N_("Start a group"), TWO_DASHES },
268 { {"end-group", no_argument, NULL, ')'},
269 ')', NULL, N_("End a group"), TWO_DASHES },
270 { {"assert", required_argument, NULL, OPTION_ASSERT},
271 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
272 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
273 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
274 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
275 '\0', NULL, NULL, ONE_DASH },
276 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
277 '\0', NULL, NULL, ONE_DASH },
278 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
279 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
280 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
281 '\0', NULL, NULL, ONE_DASH },
282 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
283 '\0', NULL, NULL, ONE_DASH },
284 { {"static", no_argument, NULL, OPTION_NON_SHARED},
285 '\0', NULL, NULL, ONE_DASH },
286 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
287 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
288 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
289 '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
290 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
291 '\0', NULL, N_("Do not check section addresses for overlaps"),
292 TWO_DASHES },
293 { {"cref", no_argument, NULL, OPTION_CREF},
294 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
295 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
296 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
297 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
298 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES },
299 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
300 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
301 { {"fini", required_argument, NULL, OPTION_FINI},
302 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
303 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
304 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
305 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
306 '\0', NULL, N_("Remove unused sections (on some targets)"),
307 TWO_DASHES },
308 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
309 '\0', NULL, N_("Don't remove unused sections (default)"),
310 TWO_DASHES },
311 { {"help", no_argument, NULL, OPTION_HELP},
312 '\0', NULL, N_("Print option help"), TWO_DASHES },
313 { {"init", required_argument, NULL, OPTION_INIT},
314 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
315 { {"Map", required_argument, NULL, OPTION_MAP},
316 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
317 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
318 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
319 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
320 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
321 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
322 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
323 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
324 '\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
325 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
326 '\0', NULL, N_("Allow undefined symbols in shared objects"), TWO_DASHES },
327 { {"allow-multiple-definition", no_argument, NULL, OPTION_ALLOW_MULTIPLE_DEFINITION},
328 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
329 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
330 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
331 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
332 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
333 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
334 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
335 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
336 '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
337 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
338 '\0', NULL, NULL, NO_HELP },
339 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
340 '\0', NULL, N_("Only use library directories specified on\n\t\t\t\tthe command line"), ONE_DASH },
341 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
342 '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES },
343 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
344 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
345 { {"relax", no_argument, NULL, OPTION_RELAX},
346 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
347 { {"retain-symbols-file", required_argument, NULL,
348 OPTION_RETAIN_SYMBOLS_FILE},
349 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
350 { {"rpath", required_argument, NULL, OPTION_RPATH},
351 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
352 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
353 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
354 { {"shared", no_argument, NULL, OPTION_SHARED},
355 '\0', NULL, N_("Create a shared library"), ONE_DASH },
356 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
357 '\0', NULL, NULL, ONE_DASH },
358 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
359 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
360 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
361 '\0', NULL, NULL, NO_HELP },
362 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
363 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), TWO_DASHES },
364 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
365 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES },
366 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
367 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
368 { {"stats", no_argument, NULL, OPTION_STATS},
369 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
370 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
371 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
372 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
373 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
374 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
375 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
376 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
377 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
378 { {"Tbss", required_argument, NULL, OPTION_TBSS},
379 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
380 { {"Tdata", required_argument, NULL, OPTION_TDATA},
381 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
382 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
383 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
384 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
385 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
386 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
387 '\0', NULL, NULL, NO_HELP },
388 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
389 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
390 { {"version-exports-section", required_argument, NULL,
391 OPTION_VERSION_EXPORTS_SECTION },
392 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
393 TWO_DASHES },
394 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
395 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
396 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
397 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
398 TWO_DASHES },
399 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
400 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
401 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
402 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
403 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
404 '\0', NULL, N_("Warn if start of section changes due to alignment"),
405 TWO_DASHES },
406 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
407 '\0', NULL, N_("Treat warnings as errors"),
408 TWO_DASHES },
409 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
410 '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
411 { {"wrap", required_argument, NULL, OPTION_WRAP},
412 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
413 { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
414 '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES }
417 #define OPTION_COUNT ARRAY_SIZE (ld_options)
419 /* Test STRING for containing a string of digits that form a number
420 between MIN and MAX. The return value is the number or ERR. */
422 static int
423 is_num (string, min, max, err)
424 const char *string;
425 int min;
426 int max;
427 int err;
429 int result = 0;
431 for (; *string; ++string)
433 if (! ISDIGIT (*string))
435 result = err;
436 break;
438 result = result * 10 + (*string - '0');
440 if (result < min || result > max)
441 result = err;
443 return result;
446 void
447 parse_args (argc, argv)
448 unsigned argc;
449 char **argv;
451 unsigned i;
452 int is, il, irl;
453 int ingroup = 0;
454 char *default_dirlist = NULL;
455 char shortopts[OPTION_COUNT * 3 + 2];
456 struct option longopts[OPTION_COUNT + 1];
457 struct option really_longopts[OPTION_COUNT + 1];
458 int last_optind;
460 /* Starting the short option string with '-' is for programs that
461 expect options and other ARGV-elements in any order and that care about
462 the ordering of the two. We describe each non-option ARGV-element
463 as if it were the argument of an option with character code 1. */
464 shortopts[0] = '-';
465 is = 1;
466 il = 0;
467 irl = 0;
468 for (i = 0; i < OPTION_COUNT; i++)
470 if (ld_options[i].shortopt != '\0')
472 shortopts[is] = ld_options[i].shortopt;
473 ++is;
474 if (ld_options[i].opt.has_arg == required_argument
475 || ld_options[i].opt.has_arg == optional_argument)
477 shortopts[is] = ':';
478 ++is;
479 if (ld_options[i].opt.has_arg == optional_argument)
481 shortopts[is] = ':';
482 ++is;
486 if (ld_options[i].opt.name != NULL)
488 if (ld_options[i].control == EXACTLY_TWO_DASHES)
490 really_longopts[irl] = ld_options[i].opt;
491 ++irl;
493 else
495 longopts[il] = ld_options[i].opt;
496 ++il;
500 shortopts[is] = '\0';
501 longopts[il].name = NULL;
502 really_longopts[irl].name = NULL;
504 /* The -G option is ambiguous on different platforms. Sometimes it
505 specifies the largest data size to put into the small data
506 section. Sometimes it is equivalent to --shared. Unfortunately,
507 the first form takes an argument, while the second does not.
509 We need to permit the --shared form because on some platforms,
510 such as Solaris, gcc -shared will pass -G to the linker.
512 To permit either usage, we look through the argument list. If we
513 find -G not followed by a number, we change it into --shared.
514 This will work for most normal cases. */
515 for (i = 1; i < argc; i++)
516 if (strcmp (argv[i], "-G") == 0
517 && (i + 1 >= argc
518 || ! ISDIGIT (argv[i + 1][0])))
519 argv[i] = (char *) "--shared";
521 /* Because we permit long options to start with a single dash, and
522 we have a --library option, and the -l option is conventionally
523 used with an immediately following argument, we can have bad
524 results if somebody tries to use -l with a library whose name
525 happens to start with "ibrary", as in -li. We avoid problems by
526 simply turning -l into --library. This means that users will
527 have to use two dashes in order to use --library, which is OK
528 since that's how it is documented.
530 FIXME: It's possible that this problem can arise for other short
531 options as well, although the user does always have the recourse
532 of adding a space between the option and the argument. */
533 for (i = 1; i < argc; i++)
535 if (argv[i][0] == '-'
536 && argv[i][1] == 'l'
537 && argv[i][2] != '\0')
539 char *n;
541 n = (char *) xmalloc (strlen (argv[i]) + 20);
542 sprintf (n, "--library=%s", argv[i] + 2);
543 argv[i] = n;
547 last_optind = -1;
548 while (1)
550 int longind;
551 int optc;
553 /* Using last_optind lets us avoid calling ldemul_parse_args
554 multiple times on a single option, which would lead to
555 confusion in the internal static variables maintained by
556 getopt. This could otherwise happen for an argument like
557 -nx, in which the -n is parsed as a single option, and we
558 loop around to pick up the -x. */
559 if (optind != last_optind)
560 if (ldemul_parse_args (argc, argv))
561 continue;
563 /* getopt_long_only is like getopt_long, but '-' as well as '--'
564 can indicate a long option. */
565 opterr = 0;
566 last_optind = optind;
567 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
568 if (optc == '?')
570 optind = last_optind;
571 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
574 if (optc == -1)
575 break;
577 switch (optc)
579 case '?':
580 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
581 default:
582 einfo (_("%P%F: use the --help option for usage information\n"));
584 case 1: /* File name. */
585 lang_add_input_file (optarg, lang_input_file_is_file_enum,
586 (char *) NULL);
587 break;
589 case OPTION_IGNORE:
590 break;
591 case 'a':
592 /* For HP/UX compatibility. Actually -a shared should mean
593 ``use only shared libraries'' but, then, we don't
594 currently support shared libraries on HP/UX anyhow. */
595 if (strcmp (optarg, "archive") == 0)
596 config.dynamic_link = false;
597 else if (strcmp (optarg, "shared") == 0
598 || strcmp (optarg, "default") == 0)
599 config.dynamic_link = true;
600 else
601 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
602 break;
603 case OPTION_ASSERT:
604 /* FIXME: We just ignore these, but we should handle them. */
605 if (strcmp (optarg, "definitions") == 0)
607 else if (strcmp (optarg, "nodefinitions") == 0)
609 else if (strcmp (optarg, "nosymbolic") == 0)
611 else if (strcmp (optarg, "pure-text") == 0)
613 else
614 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
615 break;
616 case 'A':
617 ldfile_add_arch (optarg);
618 break;
619 case 'b':
620 lang_add_target (optarg);
621 break;
622 case 'c':
623 ldfile_open_command_file (optarg);
624 parser_input = input_mri_script;
625 yyparse ();
626 break;
627 case OPTION_CALL_SHARED:
628 config.dynamic_link = true;
629 break;
630 case OPTION_NON_SHARED:
631 config.dynamic_link = false;
632 break;
633 case OPTION_CREF:
634 command_line.cref = true;
635 link_info.notice_all = true;
636 break;
637 case 'd':
638 command_line.force_common_definition = true;
639 break;
640 case OPTION_DEFSYM:
641 lex_string = optarg;
642 lex_redirect (optarg);
643 parser_input = input_defsym;
644 parsing_defsym = 1;
645 yyparse ();
646 parsing_defsym = 0;
647 lex_string = NULL;
648 break;
649 case OPTION_DEMANGLE:
650 demangling = true;
651 if (optarg != NULL)
653 enum demangling_styles style;
655 style = cplus_demangle_name_to_style (optarg);
656 if (style == unknown_demangling)
657 einfo (_("%F%P: unknown demangling style `%s'"),
658 optarg);
660 cplus_demangle_set_style (style);
662 break;
663 case 'I': /* Used on Solaris. */
664 case OPTION_DYNAMIC_LINKER:
665 command_line.interpreter = optarg;
666 break;
667 case OPTION_EB:
668 command_line.endian = ENDIAN_BIG;
669 break;
670 case OPTION_EL:
671 command_line.endian = ENDIAN_LITTLE;
672 break;
673 case OPTION_EMBEDDED_RELOCS:
674 command_line.embedded_relocs = true;
675 break;
676 case OPTION_EXPORT_DYNAMIC:
677 case 'E': /* HP/UX compatibility. */
678 link_info.export_dynamic = true;
679 break;
680 case 'e':
681 lang_add_entry (optarg, true);
682 break;
683 case 'f':
684 if (command_line.auxiliary_filters == NULL)
686 command_line.auxiliary_filters =
687 (char **) xmalloc (2 * sizeof (char *));
688 command_line.auxiliary_filters[0] = optarg;
689 command_line.auxiliary_filters[1] = NULL;
691 else
693 int c;
694 char **p;
696 c = 0;
697 for (p = command_line.auxiliary_filters; *p != NULL; p++)
698 ++c;
699 command_line.auxiliary_filters =
700 (char **) xrealloc (command_line.auxiliary_filters,
701 (c + 2) * sizeof (char *));
702 command_line.auxiliary_filters[c] = optarg;
703 command_line.auxiliary_filters[c + 1] = NULL;
705 break;
706 case 'F':
707 command_line.filter_shlib = optarg;
708 break;
709 case OPTION_FORCE_EXE_SUFFIX:
710 command_line.force_exe_suffix = true;
711 break;
712 case 'G':
714 char *end;
715 g_switch_value = strtoul (optarg, &end, 0);
716 if (*end)
717 einfo (_("%P%F: invalid number `%s'\n"), optarg);
719 break;
720 case 'g':
721 /* Ignore. */
722 break;
723 case OPTION_GC_SECTIONS:
724 command_line.gc_sections = true;
725 break;
726 case OPTION_HELP:
727 help ();
728 xexit (0);
729 break;
730 case 'L':
731 ldfile_add_library_path (optarg, true);
732 break;
733 case 'l':
734 lang_add_input_file (optarg, lang_input_file_is_l_enum,
735 (char *) NULL);
736 break;
737 case 'M':
738 config.map_filename = "-";
739 break;
740 case 'm':
741 /* Ignore. Was handled in a pre-parse. */
742 break;
743 case OPTION_MAP:
744 config.map_filename = optarg;
745 break;
746 case 'N':
747 config.text_read_only = false;
748 config.magic_demand_paged = false;
749 config.dynamic_link = false;
750 break;
751 case OPTION_NO_OMAGIC:
752 config.text_read_only = true;
753 config.magic_demand_paged = true;
754 /* NB/ Does not set dynamic_link to true.
755 Use --call-shared or -Bdynamic for this. */
756 break;
757 case 'n':
758 config.magic_demand_paged = false;
759 config.dynamic_link = false;
760 break;
761 case OPTION_NO_DEFINE_COMMON:
762 command_line.inhibit_common_definition = true;
763 break;
764 case OPTION_NO_DEMANGLE:
765 demangling = false;
766 break;
767 case OPTION_NO_GC_SECTIONS:
768 command_line.gc_sections = false;
769 break;
770 case OPTION_NO_KEEP_MEMORY:
771 link_info.keep_memory = false;
772 break;
773 case OPTION_NO_UNDEFINED:
774 link_info.no_undefined = true;
775 break;
776 case OPTION_ALLOW_SHLIB_UNDEFINED:
777 link_info.allow_shlib_undefined = true;
778 break;
779 case OPTION_ALLOW_MULTIPLE_DEFINITION:
780 link_info.allow_multiple_definition = true;
781 break;
782 case OPTION_NO_UNDEFINED_VERSION:
783 link_info.allow_undefined_version = false;
784 break;
785 case OPTION_NO_WARN_MISMATCH:
786 command_line.warn_mismatch = false;
787 break;
788 case OPTION_NOINHIBIT_EXEC:
789 force_make_executable = true;
790 break;
791 case OPTION_NOSTDLIB:
792 config.only_cmd_line_lib_dirs = true;
793 break;
794 case OPTION_NO_WHOLE_ARCHIVE:
795 whole_archive = false;
796 break;
797 case 'O':
798 /* FIXME "-O<non-digits> <value>" used to set the address of
799 section <non-digits>. Was this for compatibility with
800 something, or can we create a new option to do that
801 (with a syntax similar to -defsym)?
802 getopt can't handle two args to an option without kludges. */
804 /* Enable optimizations of output files. */
805 link_info.optimize = strtoul (optarg, NULL, 0) ? true : false;
806 break;
807 case 'o':
808 lang_add_output (optarg, 0);
809 break;
810 case OPTION_OFORMAT:
811 lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
812 break;
813 case 'q':
814 link_info.emitrelocations = true;
815 break;
816 case 'i':
817 case 'r':
818 if (optind == last_optind)
819 /* This can happen if the user put "-rpath,a" on the command
820 line. (Or something similar. The comma is important).
821 Getopt becomes confused and thinks that this is a -r option
822 but it cannot parse the text after the -r so it refuses to
823 increment the optind counter. Detect this case and issue
824 an error message here. We cannot just make this a warning,
825 increment optind, and continue because getopt is too confused
826 and will seg-fault the next time around. */
827 einfo(_("%P%F: bad -rpath option\n"));
829 link_info.relocateable = true;
830 config.build_constructors = false;
831 config.magic_demand_paged = false;
832 config.text_read_only = false;
833 config.dynamic_link = false;
834 break;
835 case 'R':
836 /* The GNU linker traditionally uses -R to mean to include
837 only the symbols from a file. The Solaris linker uses -R
838 to set the path used by the runtime linker to find
839 libraries. This is the GNU linker -rpath argument. We
840 try to support both simultaneously by checking the file
841 named. If it is a directory, rather than a regular file,
842 we assume -rpath was meant. */
844 struct stat s;
846 if (stat (optarg, &s) >= 0
847 && ! S_ISDIR (s.st_mode))
849 lang_add_input_file (optarg,
850 lang_input_file_is_symbols_only_enum,
851 (char *) NULL);
852 break;
855 /* Fall through. */
856 case OPTION_RPATH:
857 if (command_line.rpath == NULL)
858 command_line.rpath = xstrdup (optarg);
859 else
861 size_t rpath_len = strlen (command_line.rpath);
862 size_t optarg_len = strlen (optarg);
863 char *buf;
864 char *cp = command_line.rpath;
866 /* First see whether OPTARG is already in the path. */
869 size_t idx = 0;
871 while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
872 ++idx;
873 if (optarg[idx] == '\0'
874 && (cp[idx] == '\0' || cp[idx] == ':'))
875 /* We found it. */
876 break;
878 /* Not yet found. */
879 cp = strchr (cp, ':');
880 if (cp != NULL)
881 ++cp;
883 while (cp != NULL);
885 if (cp == NULL)
887 buf = xmalloc (rpath_len + optarg_len + 2);
888 sprintf (buf, "%s:%s", command_line.rpath, optarg);
889 free (command_line.rpath);
890 command_line.rpath = buf;
893 break;
894 case OPTION_RPATH_LINK:
895 if (command_line.rpath_link == NULL)
896 command_line.rpath_link = xstrdup (optarg);
897 else
899 char *buf;
901 buf = xmalloc (strlen (command_line.rpath_link)
902 + strlen (optarg)
903 + 2);
904 sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
905 free (command_line.rpath_link);
906 command_line.rpath_link = buf;
908 break;
909 case OPTION_RELAX:
910 command_line.relax = true;
911 break;
912 case OPTION_RETAIN_SYMBOLS_FILE:
913 add_keepsyms_file (optarg);
914 break;
915 case 'S':
916 link_info.strip = strip_debugger;
917 break;
918 case 's':
919 link_info.strip = strip_all;
920 break;
921 case OPTION_SHARED:
922 if (config.has_shared)
923 link_info.shared = true;
924 else
925 einfo (_("%P%F: -shared not supported\n"));
926 break;
927 case 'h': /* Used on Solaris. */
928 case OPTION_SONAME:
929 command_line.soname = optarg;
930 break;
931 case OPTION_SORT_COMMON:
932 config.sort_common = true;
933 break;
934 case OPTION_STATS:
935 config.stats = true;
936 break;
937 case OPTION_SYMBOLIC:
938 link_info.symbolic = true;
939 break;
940 case 't':
941 trace_files = true;
942 break;
943 case 'T':
944 ldfile_open_command_file (optarg);
945 parser_input = input_script;
946 yyparse ();
947 break;
948 case OPTION_SECTION_START:
950 char *optarg2;
951 char *sec_name;
952 int len;
954 /* Check for <something>=<somthing>... */
955 optarg2 = strchr (optarg, '=');
956 if (optarg2 == NULL)
957 einfo (_("%P%F: invalid argument to option \"--section-start\"\n"));
959 optarg2++;
961 /* So far so good. Are all the args present? */
962 if ((*optarg == '\0') || (*optarg2 == '\0'))
963 einfo (_("%P%F: missing argument(s) to option \"--section-start\"\n"));
965 /* We must copy the section name as set_section_start
966 doesn't do it for us. */
967 len = optarg2 - optarg;
968 sec_name = xmalloc (len);
969 memcpy (sec_name, optarg, len - 1);
970 sec_name[len - 1] = 0;
972 /* Then set it... */
973 set_section_start (sec_name, optarg2);
975 break;
976 case OPTION_TARGET_HELP:
977 /* Mention any target specific options. */
978 ldemul_list_emulation_options (stdout);
979 exit (0);
980 case OPTION_TBSS:
981 set_section_start (".bss", optarg);
982 break;
983 case OPTION_TDATA:
984 set_section_start (".data", optarg);
985 break;
986 case OPTION_TTEXT:
987 set_section_start (".text", optarg);
988 break;
989 case OPTION_TRADITIONAL_FORMAT:
990 link_info.traditional_format = true;
991 break;
992 case OPTION_TASK_LINK:
993 link_info.task_link = true;
994 /* Fall through - do an implied -r option. */
995 case OPTION_UR:
996 link_info.relocateable = true;
997 config.build_constructors = true;
998 config.magic_demand_paged = false;
999 config.text_read_only = false;
1000 config.dynamic_link = false;
1001 break;
1002 case 'u':
1003 ldlang_add_undef (optarg);
1004 break;
1005 case OPTION_UNIQUE:
1006 if (optarg != NULL)
1007 lang_add_unique (optarg);
1008 else
1009 config.unique_orphan_sections = true;
1010 break;
1011 case OPTION_VERBOSE:
1012 ldversion (1);
1013 version_printed = true;
1014 trace_file_tries = true;
1015 break;
1016 case 'v':
1017 ldversion (0);
1018 version_printed = true;
1019 break;
1020 case 'V':
1021 ldversion (1);
1022 version_printed = true;
1023 break;
1024 case OPTION_VERSION:
1025 ldversion (2);
1026 xexit (0);
1027 break;
1028 case OPTION_VERSION_SCRIPT:
1029 /* This option indicates a small script that only specifies
1030 version information. Read it, but don't assume that
1031 we've seen a linker script. */
1033 FILE *hold_script_handle;
1035 hold_script_handle = saved_script_handle;
1036 ldfile_open_command_file (optarg);
1037 saved_script_handle = hold_script_handle;
1038 parser_input = input_version_script;
1039 yyparse ();
1041 break;
1042 case OPTION_VERSION_EXPORTS_SECTION:
1043 /* This option records a version symbol to be applied to the
1044 symbols listed for export to be found in the object files
1045 .exports sections. */
1046 command_line.version_exports_section = optarg;
1047 break;
1048 case OPTION_WARN_COMMON:
1049 config.warn_common = true;
1050 break;
1051 case OPTION_WARN_CONSTRUCTORS:
1052 config.warn_constructors = true;
1053 break;
1054 case OPTION_WARN_FATAL:
1055 config.fatal_warnings = true;
1056 break;
1057 case OPTION_WARN_MULTIPLE_GP:
1058 config.warn_multiple_gp = true;
1059 break;
1060 case OPTION_WARN_ONCE:
1061 config.warn_once = true;
1062 break;
1063 case OPTION_WARN_SECTION_ALIGN:
1064 config.warn_section_align = true;
1065 break;
1066 case OPTION_WHOLE_ARCHIVE:
1067 whole_archive = true;
1068 break;
1069 case OPTION_WRAP:
1070 add_wrap (optarg);
1071 break;
1072 case OPTION_DISCARD_NONE:
1073 link_info.discard = discard_none;
1074 break;
1075 case 'X':
1076 link_info.discard = discard_l;
1077 break;
1078 case 'x':
1079 link_info.discard = discard_all;
1080 break;
1081 case 'Y':
1082 if (strncmp (optarg, "P,", 2) == 0)
1083 optarg += 2;
1084 default_dirlist = xstrdup (optarg);
1085 break;
1086 case 'y':
1087 add_ysym (optarg);
1088 break;
1089 case OPTION_SPARE_DYNAMIC_TAGS:
1090 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1091 break;
1092 case OPTION_SPLIT_BY_RELOC:
1093 if (optarg != NULL)
1094 config.split_by_reloc = strtoul (optarg, NULL, 0);
1095 else
1096 config.split_by_reloc = 32768;
1097 break;
1098 case OPTION_SPLIT_BY_FILE:
1099 if (optarg != NULL)
1100 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1101 else
1102 config.split_by_file = 1;
1103 break;
1104 case OPTION_CHECK_SECTIONS:
1105 command_line.check_section_addresses = true;
1106 break;
1107 case OPTION_NO_CHECK_SECTIONS:
1108 command_line.check_section_addresses = false;
1109 break;
1110 case '(':
1111 if (ingroup)
1112 einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1114 lang_enter_group ();
1115 ingroup = 1;
1116 break;
1117 case ')':
1118 if (! ingroup)
1119 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1121 lang_leave_group ();
1122 ingroup = 0;
1123 break;
1124 case OPTION_MPC860C0:
1125 /* Default value (in bytes). */
1126 link_info.mpc860c0 = 20;
1127 if (optarg)
1129 unsigned words;
1131 words = is_num (optarg, 1, 10, 0);
1132 if (words == 0)
1133 einfo (_("%P%F: invalid argument to option \"mpc860c0\"\n"));
1135 /* Convert words to bytes. */
1136 link_info.mpc860c0 = words * 4;
1138 command_line.relax = true;
1139 break;
1141 case OPTION_INIT:
1142 link_info.init_function = optarg;
1143 break;
1145 case OPTION_FINI:
1146 link_info.fini_function = optarg;
1147 break;
1151 if (ingroup)
1152 lang_leave_group ();
1154 if (default_dirlist != NULL)
1155 set_default_dirlist (default_dirlist);
1159 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1160 library search path. */
1162 static void
1163 set_default_dirlist (dirlist_ptr)
1164 char *dirlist_ptr;
1166 char *p;
1168 while (1)
1170 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1171 if (p != NULL)
1172 *p = '\0';
1173 if (*dirlist_ptr != '\0')
1174 ldfile_add_library_path (dirlist_ptr, true);
1175 if (p == NULL)
1176 break;
1177 dirlist_ptr = p + 1;
1181 static void
1182 set_section_start (sect, valstr)
1183 char *sect, *valstr;
1185 const char *end;
1186 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1187 if (*end)
1188 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1189 lang_section_start (sect, exp_intop (val));
1192 /* Print help messages for the options. */
1194 static void
1195 help ()
1197 unsigned i;
1198 const char **targets, **pp;
1200 printf (_("Usage: %s [options] file...\n"), program_name);
1202 printf (_("Options:\n"));
1203 for (i = 0; i < OPTION_COUNT; i++)
1205 if (ld_options[i].doc != NULL)
1207 boolean comma;
1208 int len;
1209 unsigned j;
1211 printf (" ");
1213 comma = false;
1214 len = 2;
1216 j = i;
1219 if (ld_options[j].shortopt != '\0'
1220 && ld_options[j].control != NO_HELP)
1222 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1223 len += (comma ? 2 : 0) + 2;
1224 if (ld_options[j].arg != NULL)
1226 if (ld_options[j].opt.has_arg != optional_argument)
1228 printf (" ");
1229 ++len;
1231 printf ("%s", _(ld_options[j].arg));
1232 len += strlen (_(ld_options[j].arg));
1234 comma = true;
1236 ++j;
1238 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1240 j = i;
1243 if (ld_options[j].opt.name != NULL
1244 && ld_options[j].control != NO_HELP)
1246 int two_dashes =
1247 (ld_options[j].control == TWO_DASHES
1248 || ld_options[j].control == EXACTLY_TWO_DASHES);
1250 printf ("%s-%s%s",
1251 comma ? ", " : "",
1252 two_dashes ? "-" : "",
1253 ld_options[j].opt.name);
1254 len += ((comma ? 2 : 0)
1256 + (two_dashes ? 1 : 0)
1257 + strlen (ld_options[j].opt.name));
1258 if (ld_options[j].arg != NULL)
1260 printf (" %s", _(ld_options[j].arg));
1261 len += 1 + strlen (_(ld_options[j].arg));
1263 comma = true;
1265 ++j;
1267 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1269 if (len >= 30)
1271 printf ("\n");
1272 len = 0;
1275 for (; len < 30; len++)
1276 putchar (' ');
1278 printf ("%s\n", _(ld_options[i].doc));
1282 /* Note: Various tools (such as libtool) depend upon the
1283 format of the listings below - do not change them. */
1284 /* xgettext:c-format */
1285 printf (_("%s: supported targets:"), program_name);
1286 targets = bfd_target_list ();
1287 for (pp = targets; *pp != NULL; pp++)
1288 printf (" %s", *pp);
1289 free (targets);
1290 printf ("\n");
1292 /* xgettext:c-format */
1293 printf (_("%s: supported emulations: "), program_name);
1294 ldemul_list_emulations (stdout);
1295 printf ("\n");
1297 /* xgettext:c-format */
1298 printf (_("%s: emulation specific options:\n"), program_name);
1299 ldemul_list_emulation_options (stdout);
1300 printf ("\n");
1302 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);