source: trunk/src/binutils/ld/lexsup.c@ 73

Last change on this file since 73 was 10, checked in by bird, 23 years ago

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