source: branches/libc-0.6/src/binutils/ld/lexsup.c

Last change on this file was 610, checked in by bird, 22 years ago

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