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 static int is_num PARAMS ((const char *, int, int, int));
57 static void set_default_dirlist PARAMS ((char *dirlist_ptr));
58 static void set_section_start PARAMS ((char *sect, char *valstr));
59 static void help PARAMS ((void));
61 /* Non-zero if we are processing a --defsym from the command line. */
62 int parsing_defsym = 0;
64 /* Codes used for the long options with no short synonyms. 150 isn't
65 special; it's just an arbitrary non-ASCII char value. */
67 #define OPTION_ASSERT 150
68 #define OPTION_CALL_SHARED (OPTION_ASSERT + 1)
69 #define OPTION_CREF (OPTION_CALL_SHARED + 1)
70 #define OPTION_DEFSYM (OPTION_CREF + 1)
71 #define OPTION_DEMANGLE (OPTION_DEFSYM + 1)
72 #define OPTION_DYNAMIC_LINKER (OPTION_DEMANGLE + 1)
73 #define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
74 #define OPTION_EL (OPTION_EB + 1)
75 #define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1)
76 #define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
77 #define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
78 #define OPTION_IGNORE (OPTION_HELP + 1)
79 #define OPTION_MAP (OPTION_IGNORE + 1)
80 #define OPTION_NO_DEMANGLE (OPTION_MAP + 1)
81 #define OPTION_NO_KEEP_MEMORY (OPTION_NO_DEMANGLE + 1)
82 #define OPTION_NO_WARN_MISMATCH (OPTION_NO_KEEP_MEMORY + 1)
83 #define OPTION_NOINHIBIT_EXEC (OPTION_NO_WARN_MISMATCH + 1)
84 #define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
85 #define OPTION_NO_WHOLE_ARCHIVE (OPTION_NON_SHARED + 1)
86 #define OPTION_OFORMAT (OPTION_NO_WHOLE_ARCHIVE + 1)
87 #define OPTION_RELAX (OPTION_OFORMAT + 1)
88 #define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
89 #define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
90 #define OPTION_RPATH_LINK (OPTION_RPATH + 1)
91 #define OPTION_SHARED (OPTION_RPATH_LINK + 1)
92 #define OPTION_SONAME (OPTION_SHARED + 1)
93 #define OPTION_SORT_COMMON (OPTION_SONAME + 1)
94 #define OPTION_STATS (OPTION_SORT_COMMON + 1)
95 #define OPTION_SYMBOLIC (OPTION_STATS + 1)
96 #define OPTION_TASK_LINK (OPTION_SYMBOLIC + 1)
97 #define OPTION_TBSS (OPTION_TASK_LINK + 1)
98 #define OPTION_TDATA (OPTION_TBSS + 1)
99 #define OPTION_TTEXT (OPTION_TDATA + 1)
100 #define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
101 #define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
102 #define OPTION_VERBOSE (OPTION_UR + 1)
103 #define OPTION_VERSION (OPTION_VERBOSE + 1)
104 #define OPTION_VERSION_SCRIPT (OPTION_VERSION + 1)
105 #define OPTION_VERSION_EXPORTS_SECTION (OPTION_VERSION_SCRIPT + 1)
106 #define OPTION_WARN_COMMON (OPTION_VERSION_EXPORTS_SECTION + 1)
107 #define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1)
108 #define OPTION_WARN_FATAL (OPTION_WARN_CONSTRUCTORS + 1)
109 #define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_FATAL + 1)
110 #define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1)
111 #define OPTION_WARN_SECTION_ALIGN (OPTION_WARN_ONCE + 1)
112 #define OPTION_SPLIT_BY_RELOC (OPTION_WARN_SECTION_ALIGN + 1)
113 #define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
114 #define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
115 #define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1)
116 #define OPTION_FORCE_EXE_SUFFIX (OPTION_WRAP + 1)
117 #define OPTION_GC_SECTIONS (OPTION_FORCE_EXE_SUFFIX + 1)
118 #define OPTION_NO_GC_SECTIONS (OPTION_GC_SECTIONS + 1)
119 #define OPTION_CHECK_SECTIONS (OPTION_NO_GC_SECTIONS + 1)
120 #define OPTION_NO_CHECK_SECTIONS (OPTION_CHECK_SECTIONS + 1)
121 #define OPTION_MPC860C0 (OPTION_NO_CHECK_SECTIONS + 1)
122 #define OPTION_NO_UNDEFINED (OPTION_MPC860C0 + 1)
123 #define OPTION_INIT (OPTION_NO_UNDEFINED + 1)
124 #define OPTION_FINI (OPTION_INIT + 1)
125 #define OPTION_SECTION_START (OPTION_FINI + 1)
126 #define OPTION_UNIQUE (OPTION_SECTION_START + 1)
127 #define OPTION_TARGET_HELP (OPTION_UNIQUE + 1)
128 #define OPTION_ALLOW_SHLIB_UNDEFINED (OPTION_TARGET_HELP + 1)
129 #define OPTION_DISCARD_NONE (OPTION_ALLOW_SHLIB_UNDEFINED + 1)
130 #define OPTION_SPARE_DYNAMIC_TAGS (OPTION_DISCARD_NONE + 1)
131 #define OPTION_NO_DEFINE_COMMON (OPTION_SPARE_DYNAMIC_TAGS + 1)
132 #define OPTION_NOSTDLIB (OPTION_NO_DEFINE_COMMON + 1)
134 /* The long options. This structure is used for both the option
135 parsing and the help text. */
139 /* The long option information. */
141 /* The short option with the same meaning ('\0' if none). */
143 /* The name of the argument (NULL if none). */
145 /* The documentation string. If this is NULL, this is a synonym for
146 the previous option. */
149 /* Use one dash before long option name. */
151 /* Use two dashes before long option name. */
153 /* Only accept two dashes before the long option name.
154 This is an overloading of the use of this enum, since originally it
155 was only intended to tell the --help display function how to display
156 the long option name. This feature was added in order to resolve
157 the confusion about the -omagic command line switch. Is it setting
158 the output file name to "magic" or is it setting the NMAGIC flag on
159 the output ? It has been decided that it is setting the output file
160 name, and that if you want to set the NMAGIC flag you should use -N
163 /* Don't mention this option in --help output. */
168 static const struct ld_option ld_options[] =
170 { {NULL, required_argument, NULL, '\0'},
171 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
173 { {"architecture", required_argument, NULL, 'A'},
174 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
175 { {"format", required_argument, NULL, 'b'},
176 'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES },
177 { {"mri-script", required_argument, NULL, 'c'},
178 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
179 { {"dc", no_argument, NULL, 'd'},
180 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
181 { {"dp", no_argument, NULL, 'd'},
182 '\0', NULL, NULL, ONE_DASH },
183 { {"entry", required_argument, NULL, 'e'},
184 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
185 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
186 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
187 { {"EB", no_argument, NULL, OPTION_EB},
188 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
189 { {"EL", no_argument, NULL, OPTION_EL},
190 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
191 { {"auxiliary", required_argument, NULL, 'f'},
192 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
194 { {"filter", required_argument, NULL, 'F'},
195 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES },
196 { {NULL, no_argument, NULL, '\0'},
197 'g', NULL, N_("Ignored"), ONE_DASH },
198 { {"gpsize", required_argument, NULL, 'G'},
199 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
201 { {"soname", required_argument, NULL, OPTION_SONAME},
202 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
203 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
204 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"), TWO_DASHES },
205 { {"library", required_argument, NULL, 'l'},
206 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
207 { {"library-path", required_argument, NULL, 'L'},
208 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES },
209 { {NULL, required_argument, NULL, '\0'},
210 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
211 { {"print-map", no_argument, NULL, 'M'},
212 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
213 { {"nmagic", no_argument, NULL, 'n'},
214 'n', NULL, N_("Do not page align data"), TWO_DASHES },
215 { {"omagic", no_argument, NULL, 'N'},
216 'N', NULL, N_("Do not page align data, do not make text readonly"),
217 EXACTLY_TWO_DASHES },
218 { {"output", required_argument, NULL, 'o'},
219 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
220 { {NULL, required_argument, NULL, '\0'},
221 'O', NULL, N_("Optimize output file"), ONE_DASH },
222 { {"Qy", no_argument, NULL, OPTION_IGNORE},
223 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
224 { {"emit-relocs", no_argument, NULL, 'q'},
225 'q', NULL, "Generate relocations in final output", TWO_DASHES },
226 { {"relocateable", no_argument, NULL, 'r'},
227 'r', NULL, N_("Generate relocateable output"), TWO_DASHES },
228 { {NULL, no_argument, NULL, '\0'},
229 'i', NULL, NULL, ONE_DASH },
230 { {"just-symbols", required_argument, NULL, 'R'},
231 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
233 { {"strip-all", no_argument, NULL, 's'},
234 's', NULL, N_("Strip all symbols"), TWO_DASHES },
235 { {"strip-debug", no_argument, NULL, 'S'},
236 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
237 { {"trace", no_argument, NULL, 't'},
238 't', NULL, N_("Trace file opens"), TWO_DASHES },
239 { {"script", required_argument, NULL, 'T'},
240 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
241 { {"undefined", required_argument, NULL, 'u'},
242 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES },
243 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
244 '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
245 { {"Ur", no_argument, NULL, OPTION_UR},
246 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
247 { {"version", no_argument, NULL, OPTION_VERSION},
248 'v', NULL, N_("Print version information"), TWO_DASHES },
249 { {NULL, no_argument, NULL, '\0'},
250 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
251 { {"discard-all", no_argument, NULL, 'x'},
252 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
253 { {"discard-locals", no_argument, NULL, 'X'},
254 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
255 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
256 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
257 { {"trace-symbol", required_argument, NULL, 'y'},
258 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
259 { {NULL, required_argument, NULL, '\0'},
260 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH },
261 { {"start-group", no_argument, NULL, '('},
262 '(', NULL, N_("Start a group"), TWO_DASHES },
263 { {"end-group", no_argument, NULL, ')'},
264 ')', NULL, N_("End a group"), TWO_DASHES },
265 { {"assert", required_argument, NULL, OPTION_ASSERT},
266 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
267 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
268 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
269 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
270 '\0', NULL, NULL, ONE_DASH },
271 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
272 '\0', NULL, NULL, ONE_DASH },
273 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
274 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
275 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
276 '\0', NULL, NULL, ONE_DASH },
277 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
278 '\0', NULL, NULL, ONE_DASH },
279 { {"static", no_argument, NULL, OPTION_NON_SHARED},
280 '\0', NULL, NULL, ONE_DASH },
281 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
282 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
283 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
284 '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES },
285 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
286 '\0', NULL, N_("Do not check section addresses for overlaps"),
288 { {"cref", no_argument, NULL, OPTION_CREF},
289 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
290 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
291 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
292 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
293 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES },
294 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
295 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
296 { {"fini", required_argument, NULL, OPTION_FINI},
297 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
298 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
299 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
300 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
301 '\0', NULL, N_("Remove unused sections (on some targets)"),
303 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
304 '\0', NULL, N_("Don't remove unused sections (default)"),
306 { {"help", no_argument, NULL, OPTION_HELP},
307 '\0', NULL, N_("Print option help"), TWO_DASHES },
308 { {"init", required_argument, NULL, OPTION_INIT},
309 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
310 { {"Map", required_argument, NULL, OPTION_MAP},
311 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
312 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
313 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
314 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
315 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
316 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
317 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
318 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
319 '\0', NULL, N_("Allow no undefined symbols"), TWO_DASHES },
320 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
321 '\0', NULL, N_("Allow undefined symbols in shared objects"), TWO_DASHES },
322 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
323 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
324 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
325 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
326 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
327 '\0', NULL, N_("Create an output file even if errors occur"), TWO_DASHES },
328 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
329 '\0', NULL, NULL, NO_HELP },
330 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
331 '\0', NULL, N_("Only use library directories specified on\n\t\t\t\tthe command line"), ONE_DASH },
332 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
333 '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES },
334 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
335 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
336 { {"relax", no_argument, NULL, OPTION_RELAX},
337 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
338 { {"retain-symbols-file", required_argument, NULL,
339 OPTION_RETAIN_SYMBOLS_FILE},
340 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
341 { {"rpath", required_argument, NULL, OPTION_RPATH},
342 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
343 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
344 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH },
345 { {"shared", no_argument, NULL, OPTION_SHARED},
346 '\0', NULL, N_("Create a shared library"), ONE_DASH },
347 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
348 '\0', NULL, NULL, ONE_DASH },
349 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
350 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
351 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
352 '\0', NULL, NULL, NO_HELP },
353 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
354 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), TWO_DASHES },
355 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
356 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES },
357 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
358 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES },
359 { {"stats", no_argument, NULL, OPTION_STATS},
360 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
361 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
362 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
363 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
364 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
365 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
366 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
367 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
368 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES },
369 { {"Tbss", required_argument, NULL, OPTION_TBSS},
370 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
371 { {"Tdata", required_argument, NULL, OPTION_TDATA},
372 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
373 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
374 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
375 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
376 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
377 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
378 '\0', NULL, NULL, NO_HELP },
379 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
380 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
381 { {"version-exports-section", required_argument, NULL,
382 OPTION_VERSION_EXPORTS_SECTION },
383 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
385 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
386 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
387 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
388 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
390 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
391 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
392 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
393 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
394 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
395 '\0', NULL, N_("Warn if start of section changes due to alignment"),
397 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
398 '\0', NULL, N_("Treat warnings as errors"),
400 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
401 '\0', NULL, N_("Include all objects from following archives"), TWO_DASHES },
402 { {"wrap", required_argument, NULL, OPTION_WRAP},
403 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
404 { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0},
405 '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES }
408 #define OPTION_COUNT ARRAY_SIZE (ld_options)
410 /* Test STRING for containing a string of digits that form a number
411 between MIN and MAX. The return value is the number or ERR. */
414 is_num (string, min, max, err)
422 for (; *string; ++string)
424 if (! ISDIGIT (*string))
429 result = result * 10 + (*string - '0');
431 if (result < min || result > max)
438 parse_args (argc, argv)
445 char *default_dirlist = NULL;
446 char shortopts[OPTION_COUNT * 3 + 2];
447 struct option longopts[OPTION_COUNT + 1];
448 struct option really_longopts[OPTION_COUNT + 1];
451 /* Starting the short option string with '-' is for programs that
452 expect options and other ARGV-elements in any order and that care about
453 the ordering of the two. We describe each non-option ARGV-element
454 as if it were the argument of an option with character code 1. */
459 for (i = 0; i < OPTION_COUNT; i++)
461 if (ld_options[i].shortopt != '\0')
463 shortopts[is] = ld_options[i].shortopt;
465 if (ld_options[i].opt.has_arg == required_argument
466 || ld_options[i].opt.has_arg == optional_argument)
470 if (ld_options[i].opt.has_arg == optional_argument)
477 if (ld_options[i].opt.name != NULL)
479 if (ld_options[i].control == EXACTLY_TWO_DASHES)
481 really_longopts[irl] = ld_options[i].opt;
486 longopts[il] = ld_options[i].opt;
491 shortopts[is] = '\0';
492 longopts[il].name = NULL;
493 really_longopts[irl].name = NULL;
495 /* The -G option is ambiguous on different platforms. Sometimes it
496 specifies the largest data size to put into the small data
497 section. Sometimes it is equivalent to --shared. Unfortunately,
498 the first form takes an argument, while the second does not.
500 We need to permit the --shared form because on some platforms,
501 such as Solaris, gcc -shared will pass -G to the linker.
503 To permit either usage, we look through the argument list. If we
504 find -G not followed by a number, we change it into --shared.
505 This will work for most normal cases. */
506 for (i = 1; i < argc; i++)
507 if (strcmp (argv[i], "-G") == 0
509 || ! ISDIGIT (argv[i + 1][0])))
510 argv[i] = (char *) "--shared";
512 /* Because we permit long options to start with a single dash, and
513 we have a --library option, and the -l option is conventionally
514 used with an immediately following argument, we can have bad
515 results if somebody tries to use -l with a library whose name
516 happens to start with "ibrary", as in -li. We avoid problems by
517 simply turning -l into --library. This means that users will
518 have to use two dashes in order to use --library, which is OK
519 since that's how it is documented.
521 FIXME: It's possible that this problem can arise for other short
522 options as well, although the user does always have the recourse
523 of adding a space between the option and the argument. */
524 for (i = 1; i < argc; i++)
526 if (argv[i][0] == '-'
528 && argv[i][2] != '\0')
532 n = (char *) xmalloc (strlen (argv[i]) + 20);
533 sprintf (n, "--library=%s", argv[i] + 2);
544 /* Using last_optind lets us avoid calling ldemul_parse_args
545 multiple times on a single option, which would lead to
546 confusion in the internal static variables maintained by
547 getopt. This could otherwise happen for an argument like
548 -nx, in which the -n is parsed as a single option, and we
549 loop around to pick up the -x. */
550 if (optind != last_optind)
551 if (ldemul_parse_args (argc, argv))
554 /* getopt_long_only is like getopt_long, but '-' as well as '--'
555 can indicate a long option. */
557 last_optind = optind;
558 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
561 optind = last_optind;
562 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
571 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
573 einfo (_("%P%F: use the --help option for usage information\n"));
575 case 1: /* File name. */
576 lang_add_input_file (optarg, lang_input_file_is_file_enum,
583 /* For HP/UX compatibility. Actually -a shared should mean
584 ``use only shared libraries'' but, then, we don't
585 currently support shared libraries on HP/UX anyhow. */
586 if (strcmp (optarg, "archive") == 0)
587 config.dynamic_link = false;
588 else if (strcmp (optarg, "shared") == 0
589 || strcmp (optarg, "default") == 0)
590 config.dynamic_link = true;
592 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
595 /* FIXME: We just ignore these, but we should handle them. */
596 if (strcmp (optarg, "definitions") == 0)
598 else if (strcmp (optarg, "nodefinitions") == 0)
600 else if (strcmp (optarg, "nosymbolic") == 0)
602 else if (strcmp (optarg, "pure-text") == 0)
605 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
608 ldfile_add_arch (optarg);
611 lang_add_target (optarg);
614 ldfile_open_command_file (optarg);
615 parser_input = input_mri_script;
618 case OPTION_CALL_SHARED:
619 config.dynamic_link = true;
621 case OPTION_NON_SHARED:
622 config.dynamic_link = false;
625 command_line.cref = true;
626 link_info.notice_all = true;
629 command_line.force_common_definition = true;
633 lex_redirect (optarg);
634 parser_input = input_defsym;
640 case OPTION_DEMANGLE:
644 enum demangling_styles style;
646 style = cplus_demangle_name_to_style (optarg);
647 if (style == unknown_demangling)
648 einfo (_("%F%P: unknown demangling style `%s'"),
651 cplus_demangle_set_style (style);
654 case 'I': /* Used on Solaris. */
655 case OPTION_DYNAMIC_LINKER:
656 command_line.interpreter = optarg;
659 command_line.endian = ENDIAN_BIG;
662 command_line.endian = ENDIAN_LITTLE;
664 case OPTION_EMBEDDED_RELOCS:
665 command_line.embedded_relocs = true;
667 case OPTION_EXPORT_DYNAMIC:
668 case 'E': /* HP/UX compatibility. */
669 link_info.export_dynamic = true;
672 lang_add_entry (optarg, true);
675 if (command_line.auxiliary_filters == NULL)
677 command_line.auxiliary_filters =
678 (char **) xmalloc (2 * sizeof (char *));
679 command_line.auxiliary_filters[0] = optarg;
680 command_line.auxiliary_filters[1] = NULL;
688 for (p = command_line.auxiliary_filters; *p != NULL; p++)
690 command_line.auxiliary_filters =
691 (char **) xrealloc (command_line.auxiliary_filters,
692 (c + 2) * sizeof (char *));
693 command_line.auxiliary_filters[c] = optarg;
694 command_line.auxiliary_filters[c + 1] = NULL;
698 command_line.filter_shlib = optarg;
700 case OPTION_FORCE_EXE_SUFFIX:
701 command_line.force_exe_suffix = true;
706 g_switch_value = strtoul (optarg, &end, 0);
708 einfo (_("%P%F: invalid number `%s'\n"), optarg);
714 case OPTION_GC_SECTIONS:
715 command_line.gc_sections = true;
722 ldfile_add_library_path (optarg, true);
725 lang_add_input_file (optarg, lang_input_file_is_l_enum,
729 config.map_filename = "-";
732 /* Ignore. Was handled in a pre-parse. */
735 config.map_filename = optarg;
738 config.text_read_only = false;
739 config.magic_demand_paged = false;
740 config.dynamic_link = false;
743 config.magic_demand_paged = false;
744 config.dynamic_link = false;
746 case OPTION_NO_DEFINE_COMMON:
747 command_line.inhibit_common_definition = true;
749 case OPTION_NO_DEMANGLE:
752 case OPTION_NO_GC_SECTIONS:
753 command_line.gc_sections = false;
755 case OPTION_NO_KEEP_MEMORY:
756 link_info.keep_memory = false;
758 case OPTION_NO_UNDEFINED:
759 link_info.no_undefined = true;
761 case OPTION_ALLOW_SHLIB_UNDEFINED:
762 link_info.allow_shlib_undefined = true;
764 case OPTION_NO_WARN_MISMATCH:
765 command_line.warn_mismatch = false;
767 case OPTION_NOINHIBIT_EXEC:
768 force_make_executable = true;
770 case OPTION_NOSTDLIB:
771 config.only_cmd_line_lib_dirs = true;
773 case OPTION_NO_WHOLE_ARCHIVE:
774 whole_archive = false;
777 /* FIXME "-O<non-digits> <value>" used to set the address of
778 section <non-digits>. Was this for compatibility with
779 something, or can we create a new option to do that
780 (with a syntax similar to -defsym)?
781 getopt can't handle two args to an option without kludges. */
783 /* Enable optimizations of output files. */
784 link_info.optimize = strtoul (optarg, NULL, 0) ? true : false;
787 lang_add_output (optarg, 0);
790 lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
793 link_info.emitrelocations = true;
797 if (optind == last_optind)
798 /* This can happen if the user put "-rpath,a" on the command
799 line. (Or something similar. The comma is important).
800 Getopt becomes confused and thinks that this is a -r option
801 but it cannot parse the text after the -r so it refuses to
802 increment the optind counter. Detect this case and issue
803 an error message here. We cannot just make this a warning,
804 increment optind, and continue because getopt is too confused
805 and will seg-fault the next time around. */
806 einfo(_("%P%F: bad -rpath option\n"));
808 link_info.relocateable = true;
809 config.build_constructors = false;
810 config.magic_demand_paged = false;
811 config.text_read_only = false;
812 config.dynamic_link = false;
815 /* The GNU linker traditionally uses -R to mean to include
816 only the symbols from a file. The Solaris linker uses -R
817 to set the path used by the runtime linker to find
818 libraries. This is the GNU linker -rpath argument. We
819 try to support both simultaneously by checking the file
820 named. If it is a directory, rather than a regular file,
821 we assume -rpath was meant. */
825 if (stat (optarg, &s) >= 0
826 && ! S_ISDIR (s.st_mode))
828 lang_add_input_file (optarg,
829 lang_input_file_is_symbols_only_enum,
836 if (command_line.rpath == NULL)
837 command_line.rpath = xstrdup (optarg);
840 size_t rpath_len = strlen (command_line.rpath);
841 size_t optarg_len = strlen (optarg);
843 char *cp = command_line.rpath;
845 /* First see whether OPTARG is already in the path. */
850 while (optarg[idx] != '\0' && optarg[idx] == cp[idx])
852 if (optarg[idx] == '\0'
853 && (cp[idx] == '\0' || cp[idx] == ':'))
858 cp = strchr (cp, ':');
866 buf = xmalloc (rpath_len + optarg_len + 2);
867 sprintf (buf, "%s:%s", command_line.rpath, optarg);
868 free (command_line.rpath);
869 command_line.rpath = buf;
873 case OPTION_RPATH_LINK:
874 if (command_line.rpath_link == NULL)
875 command_line.rpath_link = xstrdup (optarg);
880 buf = xmalloc (strlen (command_line.rpath_link)
883 sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
884 free (command_line.rpath_link);
885 command_line.rpath_link = buf;
889 command_line.relax = true;
891 case OPTION_RETAIN_SYMBOLS_FILE:
892 add_keepsyms_file (optarg);
895 link_info.strip = strip_debugger;
898 link_info.strip = strip_all;
901 if (config.has_shared)
902 link_info.shared = true;
904 einfo (_("%P%F: -shared not supported\n"));
906 case 'h': /* Used on Solaris. */
908 command_line.soname = optarg;
910 case OPTION_SORT_COMMON:
911 config.sort_common = true;
916 case OPTION_SYMBOLIC:
917 link_info.symbolic = true;
923 ldfile_open_command_file (optarg);
924 parser_input = input_script;
927 case OPTION_SECTION_START:
933 /* Check for <something>=<somthing>... */
934 optarg2 = strchr (optarg, '=');
936 einfo (_("%P%F: invalid argument to option \"--section-start\"\n"));
940 /* So far so good. Are all the args present? */
941 if ((*optarg == '\0') || (*optarg2 == '\0'))
942 einfo (_("%P%F: missing argument(s) to option \"--section-start\"\n"));
944 /* We must copy the section name as set_section_start
945 doesn't do it for us. */
946 len = optarg2 - optarg;
947 sec_name = xmalloc (len);
948 memcpy (sec_name, optarg, len - 1);
949 sec_name[len - 1] = 0;
952 set_section_start (sec_name, optarg2);
955 case OPTION_TARGET_HELP:
956 /* Mention any target specific options. */
957 ldemul_list_emulation_options (stdout);
960 set_section_start (".bss", optarg);
963 set_section_start (".data", optarg);
966 set_section_start (".text", optarg);
968 case OPTION_TRADITIONAL_FORMAT:
969 link_info.traditional_format = true;
971 case OPTION_TASK_LINK:
972 link_info.task_link = true;
973 /* Fall through - do an implied -r option. */
975 link_info.relocateable = true;
976 config.build_constructors = true;
977 config.magic_demand_paged = false;
978 config.text_read_only = false;
979 config.dynamic_link = false;
982 ldlang_add_undef (optarg);
986 lang_add_unique (optarg);
988 config.unique_orphan_sections = true;
992 version_printed = true;
993 trace_file_tries = true;
997 version_printed = true;
1001 version_printed = true;
1003 case OPTION_VERSION:
1007 case OPTION_VERSION_SCRIPT:
1008 /* This option indicates a small script that only specifies
1009 version information. Read it, but don't assume that
1010 we've seen a linker script. */
1012 FILE *hold_script_handle;
1014 hold_script_handle = saved_script_handle;
1015 ldfile_open_command_file (optarg);
1016 saved_script_handle = hold_script_handle;
1017 parser_input = input_version_script;
1021 case OPTION_VERSION_EXPORTS_SECTION:
1022 /* This option records a version symbol to be applied to the
1023 symbols listed for export to be found in the object files
1024 .exports sections. */
1025 command_line.version_exports_section = optarg;
1027 case OPTION_WARN_COMMON:
1028 config.warn_common = true;
1030 case OPTION_WARN_CONSTRUCTORS:
1031 config.warn_constructors = true;
1033 case OPTION_WARN_FATAL:
1034 config.fatal_warnings = true;
1036 case OPTION_WARN_MULTIPLE_GP:
1037 config.warn_multiple_gp = true;
1039 case OPTION_WARN_ONCE:
1040 config.warn_once = true;
1042 case OPTION_WARN_SECTION_ALIGN:
1043 config.warn_section_align = true;
1045 case OPTION_WHOLE_ARCHIVE:
1046 whole_archive = true;
1051 case OPTION_DISCARD_NONE:
1052 link_info.discard = discard_none;
1055 link_info.discard = discard_l;
1058 link_info.discard = discard_all;
1061 if (strncmp (optarg, "P,", 2) == 0)
1063 default_dirlist = xstrdup (optarg);
1068 case OPTION_SPARE_DYNAMIC_TAGS:
1069 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1071 case OPTION_SPLIT_BY_RELOC:
1073 config.split_by_reloc = strtoul (optarg, NULL, 0);
1075 config.split_by_reloc = 32768;
1077 case OPTION_SPLIT_BY_FILE:
1079 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1081 config.split_by_file = 1;
1083 case OPTION_CHECK_SECTIONS:
1084 command_line.check_section_addresses = true;
1086 case OPTION_NO_CHECK_SECTIONS:
1087 command_line.check_section_addresses = false;
1091 einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1093 lang_enter_group ();
1098 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1100 lang_leave_group ();
1103 case OPTION_MPC860C0:
1104 /* Default value (in bytes). */
1105 link_info.mpc860c0 = 20;
1110 words = is_num (optarg, 1, 10, 0);
1112 einfo (_("%P%F: invalid argument to option \"mpc860c0\"\n"));
1114 /* Convert words to bytes. */
1115 link_info.mpc860c0 = words * 4;
1117 command_line.relax = true;
1121 link_info.init_function = optarg;
1125 link_info.fini_function = optarg;
1131 lang_leave_group ();
1133 if (default_dirlist != NULL)
1134 set_default_dirlist (default_dirlist);
1138 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1139 library search path. */
1142 set_default_dirlist (dirlist_ptr)
1149 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1152 if (*dirlist_ptr != '\0')
1153 ldfile_add_library_path (dirlist_ptr, true);
1156 dirlist_ptr = p + 1;
1161 set_section_start (sect, valstr)
1162 char *sect, *valstr;
1165 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1167 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1168 lang_section_start (sect, exp_intop (val));
1171 /* Print help messages for the options. */
1177 const char **targets, **pp;
1179 printf (_("Usage: %s [options] file...\n"), program_name);
1181 printf (_("Options:\n"));
1182 for (i = 0; i < OPTION_COUNT; i++)
1184 if (ld_options[i].doc != NULL)
1198 if (ld_options[j].shortopt != '\0'
1199 && ld_options[j].control != NO_HELP)
1201 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1202 len += (comma ? 2 : 0) + 2;
1203 if (ld_options[j].arg != NULL)
1205 if (ld_options[j].opt.has_arg != optional_argument)
1210 printf ("%s", _(ld_options[j].arg));
1211 len += strlen (_(ld_options[j].arg));
1217 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1222 if (ld_options[j].opt.name != NULL
1223 && ld_options[j].control != NO_HELP)
1226 (ld_options[j].control == TWO_DASHES
1227 || ld_options[j].control == EXACTLY_TWO_DASHES);
1231 two_dashes ? "-" : "",
1232 ld_options[j].opt.name);
1233 len += ((comma ? 2 : 0)
1235 + (two_dashes ? 1 : 0)
1236 + strlen (ld_options[j].opt.name));
1237 if (ld_options[j].arg != NULL)
1239 printf (" %s", _(ld_options[j].arg));
1240 len += 1 + strlen (_(ld_options[j].arg));
1246 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1254 for (; len < 30; len++)
1257 printf ("%s\n", _(ld_options[i].doc));
1261 /* Note: Various tools (such as libtool) depend upon the
1262 format of the listings below - do not change them. */
1263 /* xgettext:c-format */
1264 printf (_("%s: supported targets:"), program_name);
1265 targets = bfd_target_list ();
1266 for (pp = targets; *pp != NULL; pp++)
1267 printf (" %s", *pp);
1271 /* xgettext:c-format */
1272 printf (_("%s: supported emulations: "), program_name);
1273 ldemul_list_emulations (stdout);
1276 /* xgettext:c-format */
1277 printf (_("%s: emulation specific options:\n"), program_name);
1278 ldemul_list_emulation_options (stdout);
1281 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);