1 /* Parse options for the GNU linker.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
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)
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
25 #include "libiberty.h"
28 #include "safe-ctype.h"
43 #ifndef PATH_SEPARATOR
44 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
45 #define PATH_SEPARATOR ';'
47 #define PATH_SEPARATOR ':'
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)
56 /* Omit args to avoid the possibility of clashing with a system header
57 that might disagree about consts. */
58 unsigned long strtoul ();
60 static int is_num PARAMS ((const char *, int, int, int));
61 static void set_default_dirlist PARAMS ((char *dirlist_ptr));
62 static void set_section_start PARAMS ((char *sect, char *valstr));
63 static void help PARAMS ((void));
65 /* Non-zero if we are processing a --defsym from the command line. */
66 int parsing_defsym = 0;
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. */
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_FATAL (OPTION_WARN_CONSTRUCTORS + 1)
113 #define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_FATAL + 1)
114 #define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1)
115 #define OPTION_WARN_SECTION_ALIGN (OPTION_WARN_ONCE + 1)
116 #define OPTION_SPLIT_BY_RELOC (OPTION_WARN_SECTION_ALIGN + 1)
117 #define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
118 #define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
119 #define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1)
120 #define OPTION_FORCE_EXE_SUFFIX (OPTION_WRAP + 1)
121 #define OPTION_GC_SECTIONS (OPTION_FORCE_EXE_SUFFIX + 1)
122 #define OPTION_NO_GC_SECTIONS (OPTION_GC_SECTIONS + 1)
123 #define OPTION_CHECK_SECTIONS (OPTION_NO_GC_SECTIONS + 1)
124 #define OPTION_NO_CHECK_SECTIONS (OPTION_CHECK_SECTIONS + 1)
125 #define OPTION_MPC860C0 (OPTION_NO_CHECK_SECTIONS + 1)
126 #define OPTION_NO_UNDEFINED (OPTION_MPC860C0 + 1)
127 #define OPTION_INIT (OPTION_NO_UNDEFINED + 1)
128 #define OPTION_FINI (OPTION_INIT + 1)
129 #define OPTION_SECTION_START (OPTION_FINI + 1)
130 #define OPTION_UNIQUE (OPTION_SECTION_START + 1)
131 #define OPTION_TARGET_HELP (OPTION_UNIQUE + 1)
132 #define OPTION_ALLOW_SHLIB_UNDEFINED (OPTION_TARGET_HELP + 1)
133 #define OPTION_DISCARD_NONE (OPTION_ALLOW_SHLIB_UNDEFINED + 1)
134 #define OPTION_SPARE_DYNAMIC_TAGS (OPTION_DISCARD_NONE + 1)
135 #define OPTION_NO_DEFINE_COMMON (OPTION_SPARE_DYNAMIC_TAGS + 1)
137 /* The long options. This structure is used for both the option
138 parsing and the help text. */
142 /* The long option information. */
144 /* The short option with the same meaning ('\0' if none). */
146 /* The name of the argument (NULL if none). */
148 /* The documentation string. If this is NULL, this is a synonym for
149 the previous option. */
152 /* Use one dash before long option name. */
154 /* Use two dashes before long option name. */
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
166 /* Don't mention this option in --help output. */
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"),
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"),
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)"),
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 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 { {"output", required_argument, NULL, 'o'},
222 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
223 { {NULL, required_argument, NULL, '\0'},
224 'O', NULL, N_("Optimize output file"), ONE_DASH },
225 { {"Qy", no_argument, NULL, OPTION_IGNORE},
226 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
227 { {"emit-relocs", no_argument, NULL, 'q'},
228 'q', NULL, "Generate relocations in final output", TWO_DASHES },
229 { {"relocateable", no_argument, NULL, 'r'},
230 'r', NULL, N_("Generate relocateable output"), TWO_DASHES },
231 { {NULL, no_argument, NULL, '\0'},
232 'i', NULL, NULL, ONE_DASH },
233 { {"just-symbols", required_argument, NULL, 'R'},
234 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
236 { {"strip-all", no_argument, NULL, 's'},
237 's', NULL, N_("Strip all symbols"), TWO_DASHES },
238 { {"strip-debug", no_argument, NULL, 'S'},
239 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
240 { {"trace", no_argument, NULL, 't'},
241 't', NULL, N_("Trace file opens"), TWO_DASHES },
242 { {"script", required_argument, NULL, 'T'},
243 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
244 { {"undefined", required_argument, NULL, 'u'},
245 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES },
246 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
247 '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
248 { {"Ur", no_argument, NULL, OPTION_UR},
249 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
250 { {"version", no_argument, NULL, OPTION_VERSION},
251 'v', NULL, N_("Print version information"), TWO_DASHES },
252 { {NULL, no_argument, NULL, '\0'},
253 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
254 { {"discard-all", no_argument, NULL, 'x'},
255 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
256 { {"discard-locals", no_argument, NULL, 'X'},
257 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
258 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
259 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
260 { {"trace-symbol", required_argument, NULL, 'y'},
261 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
262 { {NULL, required_argument, NULL, '\0'},
263 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH },
264 { {"start-group", no_argument, NULL, '('},
265 '(', NULL, N_("Start a group"), TWO_DASHES },
266 { {"end-group", no_argument, NULL, ')'},
267 ')', NULL, N_("End a group"), TWO_DASHES },
268 { {"assert", required_argument, NULL, OPTION_ASSERT},
269 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
270 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
271 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
272 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
273 '\0', NULL, NULL, ONE_DASH },
274 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
275 '\0', NULL, NULL, ONE_DASH },
276 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
277 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
278 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
279 '\0', NULL, NULL, ONE_DASH },
280 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
281 '\0', NULL, NULL, ONE_DASH },
282 { {"static", no_argument, NULL, OPTION_NON_SHARED},
283 '\0', NULL, NULL, ONE_DASH },
284 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
285 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
286 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
287 '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
288 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
289 '\0', NULL, N_("Do not check section addresses for overlaps"),
291 { {"cref", no_argument, NULL, OPTION_CREF},
292 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
293 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
294 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
295 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
296 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES },
297 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
298 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
299 { {"fini", required_argument, NULL, OPTION_FINI},
300 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
301 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
302 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
303 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
304 '\0', NULL, N_("Remove unused sections (on some targets)"),
306 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
307 '\0', NULL, N_("Don't remove unused sections (default)"),
309 { {"help", no_argument, NULL, OPTION_HELP},
310 '\0', NULL, N_("Print option help"), TWO_DASHES },
311 { {"init", required_argument, NULL, OPTION_INIT},
312 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
313 { {"Map", required_argument, NULL, OPTION_MAP},
314 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
315 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
316 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
317 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
318 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
319 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
320 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
321 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
322 '\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
323 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
324 '\0', NULL, N_("Allow undefined symbols in shared objects"), TWO_DASHES },
325 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
326 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
327 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
328 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
329 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
330 '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
331 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
332 '\0', NULL, NULL, NO_HELP },
333 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
334 '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES },
335 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
336 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
337 { {"relax", no_argument, NULL, OPTION_RELAX},
338 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
339 { {"retain-symbols-file", required_argument, NULL,
340 OPTION_RETAIN_SYMBOLS_FILE},
341 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
342 { {"rpath", required_argument, NULL, OPTION_RPATH},
343 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
344 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
345 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
346 { {"shared", no_argument, NULL, OPTION_SHARED},
347 '\0', NULL, N_("Create a shared library"), ONE_DASH },
348 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
349 '\0', NULL, NULL, ONE_DASH },
350 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
351 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
352 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
353 '\0', NULL, NULL, NO_HELP },
354 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
355 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), TWO_DASHES },
356 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
357 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES },
358 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
359 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
360 { {"stats", no_argument, NULL, OPTION_STATS},
361 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
362 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
363 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
364 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
365 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
366 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
367 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
368 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
369 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
370 { {"Tbss", required_argument, NULL, OPTION_TBSS},
371 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
372 { {"Tdata", required_argument, NULL, OPTION_TDATA},
373 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
374 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
375 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
376 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
377 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
378 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
379 '\0', NULL, NULL, NO_HELP },
380 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
381 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
382 { {"version-exports-section", required_argument, NULL,
383 OPTION_VERSION_EXPORTS_SECTION },
384 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
386 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
387 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
388 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
389 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
391 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
392 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
393 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
394 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
395 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
396 '\0', NULL, N_("Warn if start of section changes due to alignment"),
398 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
399 '\0', NULL, N_("Treat warnings as errors"),
401 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
402 '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
403 { {"wrap", required_argument, NULL, OPTION_WRAP},
404 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
405 { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
406 '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES }
409 #define OPTION_COUNT ARRAY_SIZE (ld_options)
411 /* Test STRING for containing a string of digits that form a number
412 between MIN and MAX. The return value is the number or ERR. */
415 is_num (string, min, max, err)
423 for (; *string; ++string)
425 if (! ISDIGIT (*string))
430 result = result * 10 + (*string - '0');
432 if (result < min || result > max)
439 parse_args (argc, argv)
446 char *default_dirlist = NULL;
447 char shortopts[OPTION_COUNT * 3 + 2];
448 struct option longopts[OPTION_COUNT + 1];
449 struct option really_longopts[OPTION_COUNT + 1];
452 /* Starting the short option string with '-' is for programs that
453 expect options and other ARGV-elements in any order and that care about
454 the ordering of the two. We describe each non-option ARGV-element
455 as if it were the argument of an option with character code 1. */
460 for (i = 0; i < OPTION_COUNT; i++)
462 if (ld_options[i].shortopt != '\0')
464 shortopts[is] = ld_options[i].shortopt;
466 if (ld_options[i].opt.has_arg == required_argument
467 || ld_options[i].opt.has_arg == optional_argument)
471 if (ld_options[i].opt.has_arg == optional_argument)
478 if (ld_options[i].opt.name != NULL)
480 if (ld_options[i].control == EXACTLY_TWO_DASHES)
482 really_longopts[irl] = ld_options[i].opt;
487 longopts[il] = ld_options[i].opt;
492 shortopts[is] = '\0';
493 longopts[il].name = NULL;
494 really_longopts[irl].name = NULL;
496 /* The -G option is ambiguous on different platforms. Sometimes it
497 specifies the largest data size to put into the small data
498 section. Sometimes it is equivalent to --shared. Unfortunately,
499 the first form takes an argument, while the second does not.
501 We need to permit the --shared form because on some platforms,
502 such as Solaris, gcc -shared will pass -G to the linker.
504 To permit either usage, we look through the argument list. If we
505 find -G not followed by a number, we change it into --shared.
506 This will work for most normal cases. */
507 for (i = 1; i < argc; i++)
508 if (strcmp (argv[i], "-G") == 0
510 || ! ISDIGIT (argv[i + 1][0])))
511 argv[i] = (char *) "--shared";
513 /* Because we permit long options to start with a single dash, and
514 we have a --library option, and the -l option is conventionally
515 used with an immediately following argument, we can have bad
516 results if somebody tries to use -l with a library whose name
517 happens to start with "ibrary", as in -li. We avoid problems by
518 simply turning -l into --library. This means that users will
519 have to use two dashes in order to use --library, which is OK
520 since that's how it is documented.
522 FIXME: It's possible that this problem can arise for other short
523 options as well, although the user does always have the recourse
524 of adding a space between the option and the argument. */
525 for (i = 1; i < argc; i++)
527 if (argv[i][0] == '-'
529 && argv[i][2] != '\0')
533 n = (char *) xmalloc (strlen (argv[i]) + 20);
534 sprintf (n, "--library=%s", argv[i] + 2);
545 /* Using last_optind lets us avoid calling ldemul_parse_args
546 multiple times on a single option, which would lead to
547 confusion in the internal static variables maintained by
548 getopt. This could otherwise happen for an argument like
549 -nx, in which the -n is parsed as a single option, and we
550 loop around to pick up the -x. */
551 if (optind != last_optind)
553 if (ldemul_parse_args (argc, argv))
555 last_optind = optind;
558 /* getopt_long_only is like getopt_long, but '-' as well as '--'
559 can indicate a long option. */
562 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
566 optc = getopt_long (argc, argv, shortopts, really_longopts, &longind);
575 fprintf (stderr, _("%s: unrecognized option '%s'\n"),
576 program_name, argv[errind]);
579 _("%s: use the --help option for usage information\n"),
582 case 1: /* File name. */
583 lang_add_input_file (optarg, lang_input_file_is_file_enum,
590 /* For HP/UX compatibility. Actually -a shared should mean
591 ``use only shared libraries'' but, then, we don't
592 currently support shared libraries on HP/UX anyhow. */
593 if (strcmp (optarg, "archive") == 0)
594 config.dynamic_link = false;
595 else if (strcmp (optarg, "shared") == 0
596 || strcmp (optarg, "default") == 0)
597 config.dynamic_link = true;
599 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
602 /* FIXME: We just ignore these, but we should handle them. */
603 if (strcmp (optarg, "definitions") == 0)
605 else if (strcmp (optarg, "nodefinitions") == 0)
607 else if (strcmp (optarg, "nosymbolic") == 0)
609 else if (strcmp (optarg, "pure-text") == 0)
612 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
615 ldfile_add_arch (optarg);
618 lang_add_target (optarg);
621 ldfile_open_command_file (optarg);
622 parser_input = input_mri_script;
625 case OPTION_CALL_SHARED:
626 config.dynamic_link = true;
628 case OPTION_NON_SHARED:
629 config.dynamic_link = false;
632 command_line.cref = true;
633 link_info.notice_all = true;
636 command_line.force_common_definition = true;
640 lex_redirect (optarg);
641 parser_input = input_defsym;
647 case OPTION_DEMANGLE:
651 enum demangling_styles style;
653 style = cplus_demangle_name_to_style (optarg);
654 if (style == unknown_demangling)
655 einfo (_("%F%P: unknown demangling style `%s'"),
658 cplus_demangle_set_style (style);
661 case 'I': /* Used on Solaris. */
662 case OPTION_DYNAMIC_LINKER:
663 command_line.interpreter = optarg;
666 command_line.endian = ENDIAN_BIG;
669 command_line.endian = ENDIAN_LITTLE;
671 case OPTION_EMBEDDED_RELOCS:
672 command_line.embedded_relocs = true;
674 case OPTION_EXPORT_DYNAMIC:
675 case 'E': /* HP/UX compatibility. */
676 link_info.export_dynamic = true;
679 lang_add_entry (optarg, true);
682 if (command_line.auxiliary_filters == NULL)
684 command_line.auxiliary_filters =
685 (char **) xmalloc (2 * sizeof (char *));
686 command_line.auxiliary_filters[0] = optarg;
687 command_line.auxiliary_filters[1] = NULL;
695 for (p = command_line.auxiliary_filters; *p != NULL; p++)
697 command_line.auxiliary_filters =
698 (char **) xrealloc (command_line.auxiliary_filters,
699 (c + 2) * sizeof (char *));
700 command_line.auxiliary_filters[c] = optarg;
701 command_line.auxiliary_filters[c + 1] = NULL;
705 command_line.filter_shlib = optarg;
707 case OPTION_FORCE_EXE_SUFFIX:
708 command_line.force_exe_suffix = true;
713 g_switch_value = strtoul (optarg, &end, 0);
715 einfo (_("%P%F: invalid number `%s'\n"), optarg);
721 case OPTION_GC_SECTIONS:
722 command_line.gc_sections = true;
729 ldfile_add_library_path (optarg, true);
732 lang_add_input_file (optarg, lang_input_file_is_l_enum,
736 config.map_filename = "-";
739 /* Ignore. Was handled in a pre-parse. */
742 config.map_filename = optarg;
745 config.text_read_only = false;
746 config.magic_demand_paged = false;
747 config.dynamic_link = false;
750 config.magic_demand_paged = false;
751 config.dynamic_link = false;
753 case OPTION_NO_DEFINE_COMMON:
754 command_line.inhibit_common_definition = true;
756 case OPTION_NO_DEMANGLE:
759 case OPTION_NO_GC_SECTIONS:
760 command_line.gc_sections = false;
762 case OPTION_NO_KEEP_MEMORY:
763 link_info.keep_memory = false;
765 case OPTION_NO_UNDEFINED:
766 link_info.no_undefined = true;
768 case OPTION_ALLOW_SHLIB_UNDEFINED:
769 link_info.allow_shlib_undefined = true;
771 case OPTION_NO_WARN_MISMATCH:
772 command_line.warn_mismatch = false;
774 case OPTION_NOINHIBIT_EXEC:
775 force_make_executable = true;
777 case OPTION_NO_WHOLE_ARCHIVE:
778 whole_archive = false;
781 /* FIXME "-O<non-digits> <value>" used to set the address of
782 section <non-digits>. Was this for compatibility with
783 something, or can we create a new option to do that
784 (with a syntax similar to -defsym)?
785 getopt can't handle two args to an option without kludges. */
787 /* Enable optimizations of output files. */
788 link_info.optimize = strtoul (optarg, NULL, 0) ? true : false;
791 lang_add_output (optarg, 0);
794 lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
797 link_info.emitrelocations = true;
801 link_info.relocateable = true;
802 config.build_constructors = false;
803 config.magic_demand_paged = false;
804 config.text_read_only = false;
805 config.dynamic_link = false;
808 /* The GNU linker traditionally uses -R to mean to include
809 only the symbols from a file. The Solaris linker uses -R
810 to set the path used by the runtime linker to find
811 libraries. This is the GNU linker -rpath argument. We
812 try to support both simultaneously by checking the file
813 named. If it is a directory, rather than a regular file,
814 we assume -rpath was meant. */
818 if (stat (optarg, &s) >= 0
819 && ! S_ISDIR (s.st_mode))
821 lang_add_input_file (optarg,
822 lang_input_file_is_symbols_only_enum,
829 if (command_line.rpath == NULL)
830 command_line.rpath = xstrdup (optarg);
833 size_t rpath_len = strlen (command_line.rpath);
834 size_t optarg_len = strlen (optarg);
836 char *cp = command_line.rpath;
838 /* First see whether OPTARG is already in the path. */
842 while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
844 if (optarg[idx] == '\0'
845 && (cp[idx] == '\0' || cp[idx] == ':'))
850 cp = strchr (cp, ':');
858 buf = xmalloc (rpath_len + optarg_len + 2);
859 sprintf (buf, "%s:%s", command_line.rpath, optarg);
860 free (command_line.rpath);
861 command_line.rpath = buf;
865 case OPTION_RPATH_LINK:
866 if (command_line.rpath_link == NULL)
867 command_line.rpath_link = xstrdup (optarg);
872 buf = xmalloc (strlen (command_line.rpath_link)
875 sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
876 free (command_line.rpath_link);
877 command_line.rpath_link = buf;
881 command_line.relax = true;
883 case OPTION_RETAIN_SYMBOLS_FILE:
884 add_keepsyms_file (optarg);
887 link_info.strip = strip_debugger;
890 link_info.strip = strip_all;
893 if (config.has_shared)
894 link_info.shared = true;
896 einfo (_("%P%F: -shared not supported\n"));
898 case 'h': /* Used on Solaris. */
900 command_line.soname = optarg;
902 case OPTION_SORT_COMMON:
903 config.sort_common = true;
908 case OPTION_SYMBOLIC:
909 link_info.symbolic = true;
915 ldfile_open_command_file (optarg);
916 parser_input = input_script;
919 case OPTION_SECTION_START:
925 /* Check for <something>=<somthing>... */
926 optarg2 = strchr (optarg, '=');
930 _("%s: Invalid argument to option \"--section-start\"\n"),
937 /* So far so good. Are all the args present? */
938 if ((*optarg == '\0') || (*optarg2 == '\0'))
941 _("%s: Missing argument(s) to option \"--section-start\"\n"),
946 /* We must copy the section name as set_section_start
947 doesn't do it for us. */
948 len = optarg2 - optarg;
949 sec_name = xmalloc (len);
950 memcpy (sec_name, optarg, len - 1);
951 sec_name[len - 1] = 0;
954 set_section_start (sec_name, optarg2);
957 case OPTION_TARGET_HELP:
958 /* Mention any target specific options. */
959 ldemul_list_emulation_options (stdout);
962 set_section_start (".bss", optarg);
965 set_section_start (".data", optarg);
968 set_section_start (".text", optarg);
970 case OPTION_TRADITIONAL_FORMAT:
971 link_info.traditional_format = true;
973 case OPTION_TASK_LINK:
974 link_info.task_link = true;
975 /* Fall through - do an implied -r option. */
977 link_info.relocateable = true;
978 config.build_constructors = true;
979 config.magic_demand_paged = false;
980 config.text_read_only = false;
981 config.dynamic_link = false;
984 ldlang_add_undef (optarg);
988 lang_add_unique (optarg);
990 config.unique_orphan_sections = true;
994 version_printed = true;
995 trace_file_tries = true;
999 version_printed = true;
1003 version_printed = true;
1005 case OPTION_VERSION:
1009 case OPTION_VERSION_SCRIPT:
1010 /* This option indicates a small script that only specifies
1011 version information. Read it, but don't assume that
1012 we've seen a linker script. */
1014 FILE * hold_script_handle;
1016 hold_script_handle = saved_script_handle;
1017 ldfile_open_command_file (optarg);
1018 saved_script_handle = hold_script_handle;
1019 parser_input = input_version_script;
1023 case OPTION_VERSION_EXPORTS_SECTION:
1024 /* This option records a version symbol to be applied to the
1025 symbols listed for export to be found in the object files
1026 .exports sections. */
1027 command_line.version_exports_section = optarg;
1029 case OPTION_WARN_COMMON:
1030 config.warn_common = true;
1032 case OPTION_WARN_CONSTRUCTORS:
1033 config.warn_constructors = true;
1035 case OPTION_WARN_FATAL:
1036 config.fatal_warnings = true;
1038 case OPTION_WARN_MULTIPLE_GP:
1039 config.warn_multiple_gp = true;
1041 case OPTION_WARN_ONCE:
1042 config.warn_once = true;
1044 case OPTION_WARN_SECTION_ALIGN:
1045 config.warn_section_align = true;
1047 case OPTION_WHOLE_ARCHIVE:
1048 whole_archive = true;
1053 case OPTION_DISCARD_NONE:
1054 link_info.discard = discard_none;
1057 link_info.discard = discard_l;
1060 link_info.discard = discard_all;
1063 if (strncmp (optarg, "P,", 2) == 0)
1065 default_dirlist = xstrdup (optarg);
1070 case OPTION_SPARE_DYNAMIC_TAGS:
1071 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1073 case OPTION_SPLIT_BY_RELOC:
1075 config.split_by_reloc = strtoul (optarg, NULL, 0);
1077 config.split_by_reloc = 32768;
1079 case OPTION_SPLIT_BY_FILE:
1081 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1083 config.split_by_file = 1;
1085 case OPTION_CHECK_SECTIONS:
1086 command_line.check_section_addresses = true;
1088 case OPTION_NO_CHECK_SECTIONS:
1089 command_line.check_section_addresses = false;
1095 _("%s: may not nest groups (--help for usage)\n"),
1099 lang_enter_group ();
1106 _("%s: group ended before it began (--help for usage)\n"),
1110 lang_leave_group ();
1113 case OPTION_MPC860C0:
1114 link_info.mpc860c0 = 20; /* default value (in bytes) */
1119 words = is_num (optarg, 1, 10, 0);
1123 _("%s: Invalid argument to option \"mpc860c0\"\n"),
1127 link_info.mpc860c0 = words * 4; /* convert words to bytes */
1129 command_line.relax = true;
1133 link_info.init_function = optarg;
1137 link_info.fini_function = optarg;
1143 lang_leave_group ();
1145 if (default_dirlist != NULL)
1146 set_default_dirlist (default_dirlist);
1150 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1151 library search path. */
1154 set_default_dirlist (dirlist_ptr)
1161 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1164 if (*dirlist_ptr != '\0')
1165 ldfile_add_library_path (dirlist_ptr, true);
1168 dirlist_ptr = p + 1;
1173 set_section_start (sect, valstr)
1174 char *sect, *valstr;
1177 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1179 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1180 lang_section_start (sect, exp_intop (val));
1183 /* Print help messages for the options. */
1189 const char **targets, **pp;
1191 printf (_("Usage: %s [options] file...\n"), program_name);
1193 printf (_("Options:\n"));
1194 for (i = 0; i < OPTION_COUNT; i++)
1196 if (ld_options[i].doc != NULL)
1210 if (ld_options[j].shortopt != '\0'
1211 && ld_options[j].control != NO_HELP)
1213 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1214 len += (comma ? 2 : 0) + 2;
1215 if (ld_options[j].arg != NULL)
1217 if (ld_options[j].opt.has_arg != optional_argument)
1222 printf ("%s", _(ld_options[j].arg));
1223 len += strlen (_(ld_options[j].arg));
1229 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1234 if (ld_options[j].opt.name != NULL
1235 && ld_options[j].control != NO_HELP)
1238 (ld_options[j].control == TWO_DASHES
1239 || ld_options[j].control == EXACTLY_TWO_DASHES);
1243 two_dashes ? "-" : "",
1244 ld_options[j].opt.name);
1245 len += ((comma ? 2 : 0)
1247 + (two_dashes ? 1 : 0)
1248 + strlen (ld_options[j].opt.name));
1249 if (ld_options[j].arg != NULL)
1251 printf (" %s", _(ld_options[j].arg));
1252 len += 1 + strlen (_(ld_options[j].arg));
1258 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1266 for (; len < 30; len++)
1269 printf ("%s\n", _(ld_options[i].doc));
1273 /* Note: Various tools (such as libtool) depend upon the
1274 format of the listings below - do not change them. */
1275 /* xgettext:c-format */
1276 printf (_("%s: supported targets:"), program_name);
1277 targets = bfd_target_list ();
1278 for (pp = targets; *pp != NULL; pp++)
1279 printf (" %s", *pp);
1283 /* xgettext:c-format */
1284 printf (_("%s: supported emulations: "), program_name);
1285 ldemul_list_emulations (stdout);
1288 /* xgettext:c-format */
1289 printf (_("%s: emulation specific options:\n"), program_name);
1290 ldemul_list_emulation_options (stdout);
1293 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);