1 /* Parse options for the GNU linker.
2 Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000
3 Free Software Foundation, Inc.
5 This file is part of GLD, the Gnu Linker.
7 GLD is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GLD is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GLD; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
24 #include "libiberty.h"
42 #ifndef PATH_SEPARATOR
43 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
44 #define PATH_SEPARATOR ';'
46 #define PATH_SEPARATOR ':'
50 /* Somewhere above, sys/stat.h got included . . . . */
51 #if !defined(S_ISDIR) && defined(S_IFDIR)
52 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
55 /* Omit args to avoid the possibility of clashing with a system header
56 that might disagree about consts. */
57 unsigned long strtoul ();
59 static int is_num
PARAMS ((const char *, int, int, int));
60 static void set_default_dirlist
PARAMS ((char *dirlist_ptr
));
61 static void set_section_start
PARAMS ((char *sect
, char *valstr
));
62 static void help
PARAMS ((void));
64 /* Non-zero if we are processing a --defsym from the command line. */
65 int parsing_defsym
= 0;
67 /* Codes used for the long options with no short synonyms. 150 isn't
68 special; it's just an arbitrary non-ASCII char value. */
70 #define OPTION_ASSERT 150
71 #define OPTION_CALL_SHARED (OPTION_ASSERT + 1)
72 #define OPTION_CREF (OPTION_CALL_SHARED + 1)
73 #define OPTION_DEFSYM (OPTION_CREF + 1)
74 #define OPTION_DEMANGLE (OPTION_DEFSYM + 1)
75 #define OPTION_DYNAMIC_LINKER (OPTION_DEMANGLE + 1)
76 #define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
77 #define OPTION_EL (OPTION_EB + 1)
78 #define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1)
79 #define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
80 #define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
81 #define OPTION_IGNORE (OPTION_HELP + 1)
82 #define OPTION_MAP (OPTION_IGNORE + 1)
83 #define OPTION_NO_DEMANGLE (OPTION_MAP + 1)
84 #define OPTION_NO_KEEP_MEMORY (OPTION_NO_DEMANGLE + 1)
85 #define OPTION_NO_WARN_MISMATCH (OPTION_NO_KEEP_MEMORY + 1)
86 #define OPTION_NOINHIBIT_EXEC (OPTION_NO_WARN_MISMATCH + 1)
87 #define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
88 #define OPTION_NO_WHOLE_ARCHIVE (OPTION_NON_SHARED + 1)
89 #define OPTION_OFORMAT (OPTION_NO_WHOLE_ARCHIVE + 1)
90 #define OPTION_RELAX (OPTION_OFORMAT + 1)
91 #define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
92 #define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
93 #define OPTION_RPATH_LINK (OPTION_RPATH + 1)
94 #define OPTION_SHARED (OPTION_RPATH_LINK + 1)
95 #define OPTION_SONAME (OPTION_SHARED + 1)
96 #define OPTION_SORT_COMMON (OPTION_SONAME + 1)
97 #define OPTION_STATS (OPTION_SORT_COMMON + 1)
98 #define OPTION_SYMBOLIC (OPTION_STATS + 1)
99 #define OPTION_TASK_LINK (OPTION_SYMBOLIC + 1)
100 #define OPTION_TBSS (OPTION_TASK_LINK + 1)
101 #define OPTION_TDATA (OPTION_TBSS + 1)
102 #define OPTION_TTEXT (OPTION_TDATA + 1)
103 #define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
104 #define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
105 #define OPTION_VERBOSE (OPTION_UR + 1)
106 #define OPTION_VERSION (OPTION_VERBOSE + 1)
107 #define OPTION_VERSION_SCRIPT (OPTION_VERSION + 1)
108 #define OPTION_VERSION_EXPORTS_SECTION (OPTION_VERSION_SCRIPT + 1)
109 #define OPTION_WARN_COMMON (OPTION_VERSION_EXPORTS_SECTION + 1)
110 #define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1)
111 #define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_CONSTRUCTORS + 1)
112 #define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1)
113 #define OPTION_WARN_SECTION_ALIGN (OPTION_WARN_ONCE + 1)
114 #define OPTION_SPLIT_BY_RELOC (OPTION_WARN_SECTION_ALIGN + 1)
115 #define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
116 #define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
117 #define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1)
118 #define OPTION_FORCE_EXE_SUFFIX (OPTION_WRAP + 1)
119 #define OPTION_GC_SECTIONS (OPTION_FORCE_EXE_SUFFIX + 1)
120 #define OPTION_NO_GC_SECTIONS (OPTION_GC_SECTIONS + 1)
121 #define OPTION_CHECK_SECTIONS (OPTION_NO_GC_SECTIONS + 1)
122 #define OPTION_NO_CHECK_SECTIONS (OPTION_CHECK_SECTIONS + 1)
123 #define OPTION_MPC860C0 (OPTION_NO_CHECK_SECTIONS + 1)
124 #define OPTION_NO_UNDEFINED (OPTION_MPC860C0 + 1)
125 #define OPTION_INIT (OPTION_NO_UNDEFINED + 1)
126 #define OPTION_FINI (OPTION_INIT + 1)
127 #define OPTION_SECTION_START (OPTION_FINI + 1)
128 #define OPTION_UNIQUE (OPTION_SECTION_START + 1)
129 #define OPTION_TARGET_HELP (OPTION_UNIQUE + 1)
130 #define OPTION_ALLOW_SHLIB_UNDEFINED (OPTION_TARGET_HELP + 1)
132 /* The long options. This structure is used for both the option
133 parsing and the help text. */
137 /* The long option information. */
139 /* The short option with the same meaning ('\0' if none). */
141 /* The name of the argument (NULL if none). */
143 /* The documentation string. If this is NULL, this is a synonym for
144 the previous option. */
147 /* Use one dash before long option name. */
149 /* Use two dashes before long option name. */
151 /* Don't mention this option in --help output. */
156 static const struct ld_option ld_options
[] =
158 { {NULL
, required_argument
, NULL
, '\0'},
159 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
161 { {"architecture", required_argument
, NULL
, 'A'},
162 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES
},
163 { {"format", required_argument
, NULL
, 'b'},
164 'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES
},
165 { {"mri-script", required_argument
, NULL
, 'c'},
166 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES
},
167 { {"dc", no_argument
, NULL
, 'd'},
168 'd', NULL
, N_("Force common symbols to be defined"), ONE_DASH
},
169 { {"dp", no_argument
, NULL
, 'd'},
170 '\0', NULL
, NULL
, ONE_DASH
},
171 { {"entry", required_argument
, NULL
, 'e'},
172 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES
},
173 { {"export-dynamic", no_argument
, NULL
, OPTION_EXPORT_DYNAMIC
},
174 'E', NULL
, N_("Export all dynamic symbols"), TWO_DASHES
},
175 { {"EB", no_argument
, NULL
, OPTION_EB
},
176 '\0', NULL
, N_("Link big-endian objects"), ONE_DASH
},
177 { {"EL", no_argument
, NULL
, OPTION_EL
},
178 '\0', NULL
, N_("Link little-endian objects"), ONE_DASH
},
179 { {"auxiliary", required_argument
, NULL
, 'f'},
180 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
182 { {"filter", required_argument
, NULL
, 'F'},
183 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES
},
184 { {NULL
, no_argument
, NULL
, '\0'},
185 'g', NULL
, N_("Ignored"), ONE_DASH
},
186 { {"gpsize", required_argument
, NULL
, 'G'},
187 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
189 { {"soname", required_argument
, NULL
, OPTION_SONAME
},
190 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH
},
191 { {"library", required_argument
, NULL
, 'l'},
192 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES
},
193 { {"library-path", required_argument
, NULL
, 'L'},
194 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES
},
195 { {NULL
, required_argument
, NULL
, '\0'},
196 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH
},
197 { {"print-map", no_argument
, NULL
, 'M'},
198 'M', NULL
, N_("Print map file on standard output"), TWO_DASHES
},
199 { {"nmagic", no_argument
, NULL
, 'n'},
200 'n', NULL
, N_("Do not page align data"), TWO_DASHES
},
201 { {"omagic", no_argument
, NULL
, 'N'},
202 'N', NULL
, N_("Do not page align data, do not make text readonly"),
204 { {"output", required_argument
, NULL
, 'o'},
205 'o', N_("FILE"), N_("Set output file name"), TWO_DASHES
},
206 { {NULL
, required_argument
, NULL
, '\0'},
207 'O', NULL
, N_("Optimize output file"), ONE_DASH
},
208 { {"Qy", no_argument
, NULL
, OPTION_IGNORE
},
209 '\0', NULL
, N_("Ignored for SVR4 compatibility"), ONE_DASH
},
210 { {"emit-relocs", no_argument
, NULL
, 'q'},
211 'q', NULL
, "Generate relocations in final output", TWO_DASHES
},
212 { {"relocateable", no_argument
, NULL
, 'r'},
213 'r', NULL
, N_("Generate relocateable output"), TWO_DASHES
},
214 { {NULL
, no_argument
, NULL
, '\0'},
215 'i', NULL
, NULL
, ONE_DASH
},
216 { {"just-symbols", required_argument
, NULL
, 'R'},
217 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
219 { {"strip-all", no_argument
, NULL
, 's'},
220 's', NULL
, N_("Strip all symbols"), TWO_DASHES
},
221 { {"strip-debug", no_argument
, NULL
, 'S'},
222 'S', NULL
, N_("Strip debugging symbols"), TWO_DASHES
},
223 { {"trace", no_argument
, NULL
, 't'},
224 't', NULL
, N_("Trace file opens"), TWO_DASHES
},
225 { {"script", required_argument
, NULL
, 'T'},
226 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES
},
227 { {"undefined", required_argument
, NULL
, 'u'},
228 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES
},
229 { {"unique", no_argument
, NULL
, OPTION_UNIQUE
},
230 '\0', NULL
, N_("Don't merge orphan sections with the same name"), TWO_DASHES
},
231 { {"Ur", no_argument
, NULL
, OPTION_UR
},
232 '\0', NULL
, N_("Build global constructor/destructor tables"), ONE_DASH
},
233 { {"version", no_argument
, NULL
, OPTION_VERSION
},
234 'v', NULL
, N_("Print version information"), TWO_DASHES
},
235 { {NULL
, no_argument
, NULL
, '\0'},
236 'V', NULL
, N_("Print version and emulation information"), ONE_DASH
},
237 { {"discard-all", no_argument
, NULL
, 'x'},
238 'x', NULL
, N_("Discard all local symbols"), TWO_DASHES
},
239 { {"discard-locals", no_argument
, NULL
, 'X'},
240 'X', NULL
, N_("Discard temporary local symbols"), TWO_DASHES
},
241 { {"trace-symbol", required_argument
, NULL
, 'y'},
242 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES
},
243 { {NULL
, required_argument
, NULL
, '\0'},
244 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH
},
245 { {"start-group", no_argument
, NULL
, '('},
246 '(', NULL
, N_("Start a group"), TWO_DASHES
},
247 { {"end-group", no_argument
, NULL
, ')'},
248 ')', NULL
, N_("End a group"), TWO_DASHES
},
249 { {"assert", required_argument
, NULL
, OPTION_ASSERT
},
250 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH
},
251 { {"Bdynamic", no_argument
, NULL
, OPTION_CALL_SHARED
},
252 '\0', NULL
, N_("Link against shared libraries"), ONE_DASH
},
253 { {"dy", no_argument
, NULL
, OPTION_CALL_SHARED
},
254 '\0', NULL
, NULL
, ONE_DASH
},
255 { {"call_shared", no_argument
, NULL
, OPTION_CALL_SHARED
},
256 '\0', NULL
, NULL
, ONE_DASH
},
257 { {"Bstatic", no_argument
, NULL
, OPTION_NON_SHARED
},
258 '\0', NULL
, N_("Do not link against shared libraries"), ONE_DASH
},
259 { {"dn", no_argument
, NULL
, OPTION_NON_SHARED
},
260 '\0', NULL
, NULL
, ONE_DASH
},
261 { {"non_shared", no_argument
, NULL
, OPTION_NON_SHARED
},
262 '\0', NULL
, NULL
, ONE_DASH
},
263 { {"static", no_argument
, NULL
, OPTION_NON_SHARED
},
264 '\0', NULL
, NULL
, ONE_DASH
},
265 { {"Bsymbolic", no_argument
, NULL
, OPTION_SYMBOLIC
},
266 '\0', NULL
, N_("Bind global references locally"), ONE_DASH
},
267 { {"check-sections", no_argument
, NULL
, OPTION_CHECK_SECTIONS
},
268 '\0', NULL
, N_("Check section addresses for overlaps (default)"), TWO_DASHES
},
269 { {"no-check-sections", no_argument
, NULL
, OPTION_NO_CHECK_SECTIONS
},
270 '\0', NULL
, N_("Do not check section addresses for overlaps"),
272 { {"cref", no_argument
, NULL
, OPTION_CREF
},
273 '\0', NULL
, N_("Output cross reference table"), TWO_DASHES
},
274 { {"defsym", required_argument
, NULL
, OPTION_DEFSYM
},
275 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES
},
276 { {"demangle", optional_argument
, NULL
, OPTION_DEMANGLE
},
277 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES
},
278 { {"dynamic-linker", required_argument
, NULL
, OPTION_DYNAMIC_LINKER
},
279 '\0', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES
},
280 { {"embedded-relocs", no_argument
, NULL
, OPTION_EMBEDDED_RELOCS
},
281 '\0', NULL
, N_("Generate embedded relocs"), TWO_DASHES
},
282 { {"fini", required_argument
, NULL
, OPTION_FINI
},
283 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH
},
284 { {"force-exe-suffix", no_argument
, NULL
, OPTION_FORCE_EXE_SUFFIX
},
285 '\0', NULL
, N_("Force generation of file with .exe suffix"), TWO_DASHES
},
286 { {"gc-sections", no_argument
, NULL
, OPTION_GC_SECTIONS
},
287 '\0', NULL
, N_("Remove unused sections (on some targets)"),
289 { {"no-gc-sections", no_argument
, NULL
, OPTION_NO_GC_SECTIONS
},
290 '\0', NULL
, N_("Don't remove unused sections (default)"),
292 { {"help", no_argument
, NULL
, OPTION_HELP
},
293 '\0', NULL
, N_("Print option help"), TWO_DASHES
},
294 { {"init", required_argument
, NULL
, OPTION_INIT
},
295 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH
},
296 { {"Map", required_argument
, NULL
, OPTION_MAP
},
297 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH
},
298 { {"no-demangle", no_argument
, NULL
, OPTION_NO_DEMANGLE
},
299 '\0', NULL
, N_("Do not demangle symbol names"), TWO_DASHES
},
300 { {"no-keep-memory", no_argument
, NULL
, OPTION_NO_KEEP_MEMORY
},
301 '\0', NULL
, N_("Use less memory and more disk I/O"), TWO_DASHES
},
302 { {"no-undefined", no_argument
, NULL
, OPTION_NO_UNDEFINED
},
303 '\0', NULL
, N_("Allow no undefined symbols"), TWO_DASHES
},
304 { {"allow-shlib-undefined", no_argument
, NULL
, OPTION_ALLOW_SHLIB_UNDEFINED
},
305 '\0', NULL
, N_("Allow undefined symbols in shared objects"), TWO_DASHES
},
306 { {"no-warn-mismatch", no_argument
, NULL
, OPTION_NO_WARN_MISMATCH
},
307 '\0', NULL
, N_("Don't warn about mismatched input files"), TWO_DASHES
},
308 { {"no-whole-archive", no_argument
, NULL
, OPTION_NO_WHOLE_ARCHIVE
},
309 '\0', NULL
, N_("Turn off --whole-archive"), TWO_DASHES
},
310 { {"noinhibit-exec", no_argument
, NULL
, OPTION_NOINHIBIT_EXEC
},
311 '\0', NULL
, N_("Create an output file even if errors occur"), TWO_DASHES
},
312 { {"noinhibit_exec", no_argument
, NULL
, OPTION_NOINHIBIT_EXEC
},
313 '\0', NULL
, NULL
, NO_HELP
},
314 { {"oformat", required_argument
, NULL
, OPTION_OFORMAT
},
315 '\0', N_("TARGET"), N_("Specify target of output file"), TWO_DASHES
},
316 { {"qmagic", no_argument
, NULL
, OPTION_IGNORE
},
317 '\0', NULL
, N_("Ignored for Linux compatibility"), ONE_DASH
},
318 { {"relax", no_argument
, NULL
, OPTION_RELAX
},
319 '\0', NULL
, N_("Relax branches on certain targets"), TWO_DASHES
},
320 { {"retain-symbols-file", required_argument
, NULL
,
321 OPTION_RETAIN_SYMBOLS_FILE
},
322 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES
},
323 { {"rpath", required_argument
, NULL
, OPTION_RPATH
},
324 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH
},
325 { {"rpath-link", required_argument
, NULL
, OPTION_RPATH_LINK
},
326 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH
},
327 { {"shared", no_argument
, NULL
, OPTION_SHARED
},
328 '\0', NULL
, N_("Create a shared library"), ONE_DASH
},
329 { {"Bshareable", no_argument
, NULL
, OPTION_SHARED
}, /* FreeBSD. */
330 '\0', NULL
, NULL
, ONE_DASH
},
331 { {"sort-common", no_argument
, NULL
, OPTION_SORT_COMMON
},
332 '\0', NULL
, N_("Sort common symbols by size"), TWO_DASHES
},
333 { {"sort_common", no_argument
, NULL
, OPTION_SORT_COMMON
},
334 '\0', NULL
, NULL
, NO_HELP
},
335 { {"split-by-file", optional_argument
, NULL
, OPTION_SPLIT_BY_FILE
},
336 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES
},
337 { {"split-by-reloc", optional_argument
, NULL
, OPTION_SPLIT_BY_RELOC
},
338 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES
},
339 { {"stats", no_argument
, NULL
, OPTION_STATS
},
340 '\0', NULL
, N_("Print memory usage statistics"), TWO_DASHES
},
341 { {"target-help", no_argument
, NULL
, OPTION_TARGET_HELP
},
342 '\0', NULL
, N_("Display target specific options"), TWO_DASHES
},
343 { {"task-link", required_argument
, NULL
, OPTION_TASK_LINK
},
344 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES
},
345 { {"traditional-format", no_argument
, NULL
, OPTION_TRADITIONAL_FORMAT
},
346 '\0', NULL
, N_("Use same format as native linker"), TWO_DASHES
},
347 { {"section-start", required_argument
, NULL
, OPTION_SECTION_START
},
348 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES
},
349 { {"Tbss", required_argument
, NULL
, OPTION_TBSS
},
350 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH
},
351 { {"Tdata", required_argument
, NULL
, OPTION_TDATA
},
352 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH
},
353 { {"Ttext", required_argument
, NULL
, OPTION_TTEXT
},
354 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH
},
355 { {"verbose", no_argument
, NULL
, OPTION_VERBOSE
},
356 '\0', NULL
, N_("Output lots of information during link"), TWO_DASHES
},
357 { {"dll-verbose", no_argument
, NULL
, OPTION_VERBOSE
}, /* Linux. */
358 '\0', NULL
, NULL
, NO_HELP
},
359 { {"version-script", required_argument
, NULL
, OPTION_VERSION_SCRIPT
},
360 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES
},
361 { {"version-exports-section", required_argument
, NULL
,
362 OPTION_VERSION_EXPORTS_SECTION
},
363 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
365 { {"warn-common", no_argument
, NULL
, OPTION_WARN_COMMON
},
366 '\0', NULL
, N_("Warn about duplicate common symbols"), TWO_DASHES
},
367 { {"warn-constructors", no_argument
, NULL
, OPTION_WARN_CONSTRUCTORS
},
368 '\0', NULL
, N_("Warn if global constructors/destructors are seen"),
370 { {"warn-multiple-gp", no_argument
, NULL
, OPTION_WARN_MULTIPLE_GP
},
371 '\0', NULL
, N_("Warn if the multiple GP values are used"), TWO_DASHES
},
372 { {"warn-once", no_argument
, NULL
, OPTION_WARN_ONCE
},
373 '\0', NULL
, N_("Warn only once per undefined symbol"), TWO_DASHES
},
374 { {"warn-section-align", no_argument
, NULL
, OPTION_WARN_SECTION_ALIGN
},
375 '\0', NULL
, N_("Warn if start of section changes due to alignment"),
377 { {"whole-archive", no_argument
, NULL
, OPTION_WHOLE_ARCHIVE
},
378 '\0', NULL
, N_("Include all objects from following archives"), TWO_DASHES
},
379 { {"wrap", required_argument
, NULL
, OPTION_WRAP
},
380 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES
},
381 { {"mpc860c0", optional_argument
, NULL
, OPTION_MPC860C0
},
382 '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES
}
385 #define OPTION_COUNT ((int) (sizeof ld_options / sizeof ld_options[0]))
387 /* Test STRING for containing a string of digits that form a number
388 between MIN and MAX. The return value is the number or ERR. */
391 is_num (string
, min
, max
, err
)
399 for (; *string
; ++string
)
401 if (! isdigit (*string
))
406 result
= result
* 10 + (*string
- '0');
408 if (result
< min
|| result
> max
)
415 parse_args (argc
, argv
)
421 char *default_dirlist
= NULL
;
422 char shortopts
[OPTION_COUNT
* 3 + 2];
423 struct option longopts
[OPTION_COUNT
+ 1];
426 /* Starting the short option string with '-' is for programs that
427 expect options and other ARGV-elements in any order and that care about
428 the ordering of the two. We describe each non-option ARGV-element
429 as if it were the argument of an option with character code 1. */
433 for (i
= 0; i
< OPTION_COUNT
; i
++)
435 if (ld_options
[i
].shortopt
!= '\0')
437 shortopts
[is
] = ld_options
[i
].shortopt
;
439 if (ld_options
[i
].opt
.has_arg
== required_argument
440 || ld_options
[i
].opt
.has_arg
== optional_argument
)
444 if (ld_options
[i
].opt
.has_arg
== optional_argument
)
451 if (ld_options
[i
].opt
.name
!= NULL
)
453 longopts
[il
] = ld_options
[i
].opt
;
457 shortopts
[is
] = '\0';
458 longopts
[il
].name
= NULL
;
460 /* The -G option is ambiguous on different platforms. Sometimes it
461 specifies the largest data size to put into the small data
462 section. Sometimes it is equivalent to --shared. Unfortunately,
463 the first form takes an argument, while the second does not.
465 We need to permit the --shared form because on some platforms,
466 such as Solaris, gcc -shared will pass -G to the linker.
468 To permit either usage, we look through the argument list. If we
469 find -G not followed by a number, we change it into --shared.
470 This will work for most normal cases. */
471 for (i
= 1; i
< argc
; i
++)
472 if (strcmp (argv
[i
], "-G") == 0
474 || ! isdigit ((unsigned char) argv
[i
+ 1][0])))
475 argv
[i
] = (char *) "--shared";
477 /* Because we permit long options to start with a single dash, and
478 we have a --library option, and the -l option is conventionally
479 used with an immediately following argument, we can have bad
480 results if somebody tries to use -l with a library whose name
481 happens to start with "ibrary", as in -li. We avoid problems by
482 simply turning -l into --library. This means that users will
483 have to use two dashes in order to use --library, which is OK
484 since that's how it is documented.
486 FIXME: It's possible that this problem can arise for other short
487 options as well, although the user does always have the recourse
488 of adding a space between the option and the argument. */
489 for (i
= 1; i
< argc
; i
++)
491 if (argv
[i
][0] == '-'
493 && argv
[i
][2] != '\0')
497 n
= (char *) xmalloc (strlen (argv
[i
]) + 20);
498 sprintf (n
, "--library=%s", argv
[i
] + 2);
509 /* Using last_optind lets us avoid calling ldemul_parse_args
510 multiple times on a single option, which would lead to
511 confusion in the internal static variables maintained by
512 getopt. This could otherwise happen for an argument like
513 -nx, in which the -n is parsed as a single option, and we
514 loop around to pick up the -x. */
515 if (optind
!= last_optind
)
517 if (ldemul_parse_args (argc
, argv
))
519 last_optind
= optind
;
522 /* getopt_long_only is like getopt_long, but '-' as well as '--'
523 can indicate a long option. */
524 optc
= getopt_long_only (argc
, argv
, shortopts
, longopts
, &longind
);
532 _("%s: use the --help option for usage information\n"),
535 case 1: /* File name. */
536 lang_add_input_file (optarg
, lang_input_file_is_file_enum
,
543 /* For HP/UX compatibility. Actually -a shared should mean
544 ``use only shared libraries'' but, then, we don't
545 currently support shared libraries on HP/UX anyhow. */
546 if (strcmp (optarg
, "archive") == 0)
547 config
.dynamic_link
= false;
548 else if (strcmp (optarg
, "shared") == 0
549 || strcmp (optarg
, "default") == 0)
550 config
.dynamic_link
= true;
552 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg
);
555 /* FIXME: We just ignore these, but we should handle them. */
556 if (strcmp (optarg
, "definitions") == 0)
558 else if (strcmp (optarg
, "nodefinitions") == 0)
560 else if (strcmp (optarg
, "nosymbolic") == 0)
562 else if (strcmp (optarg
, "pure-text") == 0)
565 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg
);
568 ldfile_add_arch (optarg
);
571 lang_add_target (optarg
);
574 ldfile_open_command_file (optarg
);
575 parser_input
= input_mri_script
;
578 case OPTION_CALL_SHARED
:
579 config
.dynamic_link
= true;
581 case OPTION_NON_SHARED
:
582 config
.dynamic_link
= false;
585 command_line
.cref
= true;
586 link_info
.notice_all
= true;
589 command_line
.force_common_definition
= true;
593 lex_redirect (optarg
);
594 parser_input
= input_defsym
;
600 case OPTION_DEMANGLE
:
604 enum demangling_styles style
;
606 style
= cplus_demangle_name_to_style (optarg
);
607 if (style
== unknown_demangling
)
608 einfo (_("%F%P: unknown demangling style `%s'"),
611 cplus_demangle_set_style (style
);
614 case OPTION_DYNAMIC_LINKER
:
615 command_line
.interpreter
= optarg
;
618 command_line
.endian
= ENDIAN_BIG
;
621 command_line
.endian
= ENDIAN_LITTLE
;
623 case OPTION_EMBEDDED_RELOCS
:
624 command_line
.embedded_relocs
= true;
626 case OPTION_EXPORT_DYNAMIC
:
627 case 'E': /* HP/UX compatibility. */
628 command_line
.export_dynamic
= true;
631 lang_add_entry (optarg
, true);
634 if (command_line
.auxiliary_filters
== NULL
)
636 command_line
.auxiliary_filters
=
637 (char **) xmalloc (2 * sizeof (char *));
638 command_line
.auxiliary_filters
[0] = optarg
;
639 command_line
.auxiliary_filters
[1] = NULL
;
647 for (p
= command_line
.auxiliary_filters
; *p
!= NULL
; p
++)
649 command_line
.auxiliary_filters
=
650 (char **) xrealloc (command_line
.auxiliary_filters
,
651 (c
+ 2) * sizeof (char *));
652 command_line
.auxiliary_filters
[c
] = optarg
;
653 command_line
.auxiliary_filters
[c
+ 1] = NULL
;
657 command_line
.filter_shlib
= optarg
;
659 case OPTION_FORCE_EXE_SUFFIX
:
660 command_line
.force_exe_suffix
= true;
665 g_switch_value
= strtoul (optarg
, &end
, 0);
667 einfo (_("%P%F: invalid number `%s'\n"), optarg
);
673 case OPTION_GC_SECTIONS
:
674 command_line
.gc_sections
= true;
681 ldfile_add_library_path (optarg
, true);
684 lang_add_input_file (optarg
, lang_input_file_is_l_enum
,
688 config
.map_filename
= "-";
691 /* Ignore. Was handled in a pre-parse. */
694 config
.map_filename
= optarg
;
697 config
.text_read_only
= false;
698 config
.magic_demand_paged
= false;
699 config
.dynamic_link
= false;
702 config
.magic_demand_paged
= false;
703 config
.dynamic_link
= false;
705 case OPTION_NO_DEMANGLE
:
708 case OPTION_NO_GC_SECTIONS
:
709 command_line
.gc_sections
= false;
711 case OPTION_NO_KEEP_MEMORY
:
712 link_info
.keep_memory
= false;
714 case OPTION_NO_UNDEFINED
:
715 link_info
.no_undefined
= true;
717 case OPTION_ALLOW_SHLIB_UNDEFINED
:
718 link_info
.allow_shlib_undefined
= true;
720 case OPTION_NO_WARN_MISMATCH
:
721 command_line
.warn_mismatch
= false;
723 case OPTION_NOINHIBIT_EXEC
:
724 force_make_executable
= true;
726 case OPTION_NO_WHOLE_ARCHIVE
:
727 whole_archive
= false;
730 /* FIXME "-O<non-digits> <value>" used to set the address of
731 section <non-digits>. Was this for compatibility with
732 something, or can we create a new option to do that
733 (with a syntax similar to -defsym)?
734 getopt can't handle two args to an option without kludges. */
736 /* Enable optimizations of output files. */
737 link_info
.optimize
= strtoul (optarg
, NULL
, 0) ? true : false;
740 lang_add_output (optarg
, 0);
743 lang_add_output_format (optarg
, (char *) NULL
, (char *) NULL
, 0);
746 link_info
.emitrelocations
= true;
750 link_info
.relocateable
= true;
751 config
.build_constructors
= false;
752 config
.magic_demand_paged
= false;
753 config
.text_read_only
= false;
754 config
.dynamic_link
= false;
757 /* The GNU linker traditionally uses -R to mean to include
758 only the symbols from a file. The Solaris linker uses -R
759 to set the path used by the runtime linker to find
760 libraries. This is the GNU linker -rpath argument. We
761 try to support both simultaneously by checking the file
762 named. If it is a directory, rather than a regular file,
763 we assume -rpath was meant. */
767 if (stat (optarg
, &s
) >= 0
768 && ! S_ISDIR (s
.st_mode
))
770 lang_add_input_file (optarg
,
771 lang_input_file_is_symbols_only_enum
,
778 if (command_line
.rpath
== NULL
)
779 command_line
.rpath
= buystring (optarg
);
782 size_t rpath_len
= strlen (command_line
.rpath
);
783 size_t optarg_len
= strlen (optarg
);
785 char *cp
= command_line
.rpath
;
787 /* First see whether OPTARG is already in the path. */
791 while (optarg
[idx
] != '\0' && optarg
[idx
] == cp
[idx
])
793 if (optarg
[idx
] == '\0'
794 && (cp
[idx
] == '\0' || cp
[idx
] == ':'))
799 cp
= strchr (cp
, ':');
807 buf
= xmalloc (rpath_len
+ optarg_len
+ 2);
808 sprintf (buf
, "%s:%s", command_line
.rpath
, optarg
);
809 free (command_line
.rpath
);
810 command_line
.rpath
= buf
;
814 case OPTION_RPATH_LINK
:
815 if (command_line
.rpath_link
== NULL
)
816 command_line
.rpath_link
= buystring (optarg
);
821 buf
= xmalloc (strlen (command_line
.rpath_link
)
824 sprintf (buf
, "%s:%s", command_line
.rpath_link
, optarg
);
825 free (command_line
.rpath_link
);
826 command_line
.rpath_link
= buf
;
830 command_line
.relax
= true;
832 case OPTION_RETAIN_SYMBOLS_FILE
:
833 add_keepsyms_file (optarg
);
836 link_info
.strip
= strip_debugger
;
839 link_info
.strip
= strip_all
;
842 if (config
.has_shared
)
843 link_info
.shared
= true;
845 einfo (_("%P%F: -shared not supported\n"));
847 case 'h': /* Used on Solaris. */
849 command_line
.soname
= optarg
;
851 case OPTION_SORT_COMMON
:
852 config
.sort_common
= true;
857 case OPTION_SYMBOLIC
:
858 link_info
.symbolic
= true;
864 ldfile_open_command_file (optarg
);
865 parser_input
= input_script
;
868 case OPTION_SECTION_START
:
874 /* Check for <something>=<somthing>... */
875 optarg2
= strchr (optarg
, '=');
879 _("%s: Invalid argument to option \"--section-start\"\n"),
886 /* So far so good. Are all the args present? */
887 if ((*optarg
== '\0') || (*optarg2
== '\0'))
890 _("%s: Missing argument(s) to option \"--section-start\"\n"),
895 /* We must copy the section name as set_section_start
896 doesn't do it for us. */
897 len
= optarg2
- optarg
;
898 sec_name
= xmalloc (len
);
899 memcpy (sec_name
, optarg
, len
- 1);
900 sec_name
[len
- 1] = 0;
903 set_section_start (sec_name
, optarg2
);
906 case OPTION_TARGET_HELP
:
907 /* Mention any target specific options. */
908 ldemul_list_emulation_options (stdout
);
911 set_section_start (".bss", optarg
);
914 set_section_start (".data", optarg
);
917 set_section_start (".text", optarg
);
919 case OPTION_TRADITIONAL_FORMAT
:
920 link_info
.traditional_format
= true;
922 case OPTION_TASK_LINK
:
923 link_info
.task_link
= true;
924 /* Fall through - do an implied -r option. */
926 link_info
.relocateable
= true;
927 config
.build_constructors
= true;
928 config
.magic_demand_paged
= false;
929 config
.text_read_only
= false;
930 config
.dynamic_link
= false;
933 ldlang_add_undef (optarg
);
936 config
.unique_orphan_sections
= true;
940 version_printed
= true;
941 trace_file_tries
= true;
945 version_printed
= true;
949 version_printed
= true;
952 /* This output is intended to follow the GNU standards document. */
953 printf ("GNU ld %s\n", ld_program_version
);
954 printf (_("Copyright 2000 Free Software Foundation, Inc.\n"));
956 This program is free software; you may redistribute it under the terms of\n\
957 the GNU General Public License. This program has absolutely no warranty.\n"));
959 ld_emulation_xfer_type
**ptr
= ld_emulations
;
961 printf (_(" Supported emulations:\n"));
964 printf (" %s\n", (*ptr
)->emulation_name
);
970 case OPTION_VERSION_SCRIPT
:
971 /* This option indicates a small script that only specifies
972 version information. Read it, but don't assume that
973 we've seen a linker script. */
975 boolean hold_had_script
;
977 hold_had_script
= had_script
;
978 ldfile_open_command_file (optarg
);
979 had_script
= hold_had_script
;
980 parser_input
= input_version_script
;
984 case OPTION_VERSION_EXPORTS_SECTION
:
985 /* This option records a version symbol to be applied to the
986 symbols listed for export to be found in the object files
987 .exports sections. */
988 command_line
.version_exports_section
= optarg
;
990 case OPTION_WARN_COMMON
:
991 config
.warn_common
= true;
993 case OPTION_WARN_CONSTRUCTORS
:
994 config
.warn_constructors
= true;
996 case OPTION_WARN_MULTIPLE_GP
:
997 config
.warn_multiple_gp
= true;
999 case OPTION_WARN_ONCE
:
1000 config
.warn_once
= true;
1002 case OPTION_WARN_SECTION_ALIGN
:
1003 config
.warn_section_align
= true;
1005 case OPTION_WHOLE_ARCHIVE
:
1006 whole_archive
= true;
1012 link_info
.discard
= discard_l
;
1015 link_info
.discard
= discard_all
;
1018 if (strncmp (optarg
, "P,", 2) == 0)
1020 default_dirlist
= xstrdup (optarg
);
1025 case OPTION_SPLIT_BY_RELOC
:
1027 config
.split_by_reloc
= strtoul (optarg
, NULL
, 0);
1029 config
.split_by_reloc
= 32768;
1031 case OPTION_SPLIT_BY_FILE
:
1033 config
.split_by_file
= bfd_scan_vma (optarg
, NULL
, 0);
1035 config
.split_by_file
= 1;
1037 case OPTION_CHECK_SECTIONS
:
1038 command_line
.check_section_addresses
= true;
1040 case OPTION_NO_CHECK_SECTIONS
:
1041 command_line
.check_section_addresses
= false;
1047 _("%s: may not nest groups (--help for usage)\n"),
1051 lang_enter_group ();
1058 _("%s: group ended before it began (--help for usage)\n"),
1062 lang_leave_group ();
1065 case OPTION_MPC860C0
:
1066 link_info
.mpc860c0
= 20; /* default value (in bytes) */
1071 words
= is_num (optarg
, 1, 10, 0);
1075 _("%s: Invalid argument to option \"mpc860c0\"\n"),
1079 link_info
.mpc860c0
= words
* 4; /* convert words to bytes */
1081 command_line
.relax
= true;
1085 link_info
.init_function
= optarg
;
1089 link_info
.fini_function
= optarg
;
1095 lang_leave_group ();
1097 if (default_dirlist
!= NULL
)
1098 set_default_dirlist (default_dirlist
);
1102 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1103 library search path. */
1106 set_default_dirlist (dirlist_ptr
)
1113 p
= strchr (dirlist_ptr
, PATH_SEPARATOR
);
1116 if (*dirlist_ptr
!= '\0')
1117 ldfile_add_library_path (dirlist_ptr
, true);
1120 dirlist_ptr
= p
+ 1;
1125 set_section_start (sect
, valstr
)
1126 char *sect
, *valstr
;
1129 bfd_vma val
= bfd_scan_vma (valstr
, &end
, 16);
1131 einfo (_("%P%F: invalid hex number `%s'\n"), valstr
);
1132 lang_section_start (sect
, exp_intop (val
));
1135 /* Print help messages for the options. */
1141 const char **targets
, **pp
;
1143 printf (_("Usage: %s [options] file...\n"), program_name
);
1145 printf (_("Options:\n"));
1146 for (i
= 0; i
< OPTION_COUNT
; i
++)
1148 if (ld_options
[i
].doc
!= NULL
)
1162 if (ld_options
[j
].shortopt
!= '\0'
1163 && ld_options
[j
].control
!= NO_HELP
)
1165 printf ("%s-%c", comma
? ", " : "", ld_options
[j
].shortopt
);
1166 len
+= (comma
? 2 : 0) + 2;
1167 if (ld_options
[j
].arg
!= NULL
)
1169 if (ld_options
[j
].opt
.has_arg
!= optional_argument
)
1174 printf ("%s", _(ld_options
[j
].arg
));
1175 len
+= strlen (_(ld_options
[j
].arg
));
1181 while (j
< OPTION_COUNT
&& ld_options
[j
].doc
== NULL
);
1186 if (ld_options
[j
].opt
.name
!= NULL
1187 && ld_options
[j
].control
!= NO_HELP
)
1191 ld_options
[j
].control
== TWO_DASHES
? "-" : "",
1192 ld_options
[j
].opt
.name
);
1193 len
+= ((comma
? 2 : 0)
1195 + (ld_options
[j
].control
== TWO_DASHES
? 1 : 0)
1196 + strlen (ld_options
[j
].opt
.name
));
1197 if (ld_options
[j
].arg
!= NULL
)
1199 printf (" %s", _(ld_options
[j
].arg
));
1200 len
+= 1 + strlen (_(ld_options
[j
].arg
));
1206 while (j
< OPTION_COUNT
&& ld_options
[j
].doc
== NULL
);
1214 for (; len
< 30; len
++)
1217 printf ("%s\n", _(ld_options
[i
].doc
));
1221 /* Note: Various tools (such as libtool) depend upon the
1222 format of the listings below - do not change them. */
1223 /* xgettext:c-format */
1224 printf (_("%s: supported targets:"), program_name
);
1225 targets
= bfd_target_list ();
1226 for (pp
= targets
; *pp
!= NULL
; pp
++)
1227 printf (" %s", *pp
);
1231 /* xgettext:c-format */
1232 printf (_("%s: supported emulations: "), program_name
);
1233 ldemul_list_emulations (stdout
);
1236 /* xgettext:c-format */
1237 printf (_("%s: emulation specific options:\n"), program_name
);
1238 ldemul_list_emulation_options (stdout
);
1241 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO
);