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Initial import of binutils 2.27 on vendor branch
[dragonfly.git] / contrib / binutils-2.27 / ld / lexsup.c
blob6d28e9142b090814dd9dd0637e4a44da5732a91a
1 /* Parse options for the GNU linker.
2 Copyright (C) 1991-2016 Free Software Foundation, Inc.
3
4 This file is part of the GNU Binutils.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
20
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "bfdver.h"
24 #include "libiberty.h"
25 #include <stdio.h>
26 #include <string.h>
27 #include "safe-ctype.h"
28 #include "getopt.h"
29 #include "bfdlink.h"
30 #include "ld.h"
31 #include "ldmain.h"
32 #include "ldmisc.h"
33 #include "ldexp.h"
34 #include "ldlang.h"
35 #include <ldgram.h>
36 #include "ldlex.h"
37 #include "ldfile.h"
38 #include "ldver.h"
39 #include "ldemul.h"
40 #include "demangle.h"
41 #ifdef ENABLE_PLUGINS
42 #include "plugin.h"
43 #endif /* ENABLE_PLUGINS */
44
45 #ifndef PATH_SEPARATOR
46 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
47 #define PATH_SEPARATOR ';'
48 #else
49 #define PATH_SEPARATOR ':'
50 #endif
51 #endif
52
53 /* Somewhere above, sys/stat.h got included . . . . */
54 #if !defined(S_ISDIR) && defined(S_IFDIR)
55 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
56 #endif
57
58 static void set_default_dirlist (char *);
59 static void set_section_start (char *, char *);
60 static void set_segment_start (const char *, char *);
61 static void help (void);
62
63 /* The long options. This structure is used for both the option
64 parsing and the help text. */
65
66 enum control_enum {
67 /* Use one dash before long option name. */
68 ONE_DASH = 1,
69 /* Use two dashes before long option name. */
70 TWO_DASHES = 2,
71 /* Only accept two dashes before the long option name.
72 This is an overloading of the use of this enum, since originally it
73 was only intended to tell the --help display function how to display
74 the long option name. This feature was added in order to resolve
75 the confusion about the -omagic command line switch. Is it setting
76 the output file name to "magic" or is it setting the NMAGIC flag on
77 the output ? It has been decided that it is setting the output file
78 name, and that if you want to set the NMAGIC flag you should use -N
79 or --omagic. */
80 EXACTLY_TWO_DASHES,
81 /* Don't mention this option in --help output. */
82 NO_HELP
83 };
84
85 struct ld_option
86 {
87 /* The long option information. */
88 struct option opt;
89 /* The short option with the same meaning ('\0' if none). */
90 char shortopt;
91 /* The name of the argument (NULL if none). */
92 const char *arg;
93 /* The documentation string. If this is NULL, this is a synonym for
94 the previous option. */
95 const char *doc;
96 enum control_enum control;
97 };
98
99 static const struct ld_option ld_options[] =
100 {
101 { {NULL, required_argument, NULL, '\0'},
102 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
103 ONE_DASH },
104 { {"architecture", required_argument, NULL, 'A'},
105 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
106 { {"format", required_argument, NULL, 'b'},
107 'b', N_("TARGET"), N_("Specify target for following input files"),
108 TWO_DASHES },
109 { {"mri-script", required_argument, NULL, 'c'},
110 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
111 { {"dc", no_argument, NULL, 'd'},
112 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
113 { {"dp", no_argument, NULL, 'd'},
114 '\0', NULL, NULL, ONE_DASH },
115 { {"entry", required_argument, NULL, 'e'},
116 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
117 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
118 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
119 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
120 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
121 { {"EB", no_argument, NULL, OPTION_EB},
122 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
123 { {"EL", no_argument, NULL, OPTION_EL},
124 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
125 { {"auxiliary", required_argument, NULL, 'f'},
126 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
127 TWO_DASHES },
128 { {"filter", required_argument, NULL, 'F'},
129 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
130 TWO_DASHES },
131 { {NULL, no_argument, NULL, '\0'},
132 'g', NULL, N_("Ignored"), ONE_DASH },
133 { {"gpsize", required_argument, NULL, 'G'},
134 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
135 TWO_DASHES },
136 { {"soname", required_argument, NULL, OPTION_SONAME},
137 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
138 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
139 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
140 TWO_DASHES },
141 { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER},
142 '\0', NULL, N_("Produce an executable with no program interpreter header"),
143 TWO_DASHES },
144 { {"library", required_argument, NULL, 'l'},
145 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
146 { {"library-path", required_argument, NULL, 'L'},
147 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
148 TWO_DASHES },
149 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
150 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
151 { {NULL, required_argument, NULL, '\0'},
152 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
153 { {"print-map", no_argument, NULL, 'M'},
154 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
155 { {"nmagic", no_argument, NULL, 'n'},
156 'n', NULL, N_("Do not page align data"), TWO_DASHES },
157 { {"omagic", no_argument, NULL, 'N'},
158 'N', NULL, N_("Do not page align data, do not make text readonly"),
159 EXACTLY_TWO_DASHES },
160 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
161 '\0', NULL, N_("Page align data, make text readonly"),
162 EXACTLY_TWO_DASHES },
163 { {"output", required_argument, NULL, 'o'},
164 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
165 { {NULL, required_argument, NULL, '\0'},
166 'O', NULL, N_("Optimize output file"), ONE_DASH },
167 #ifdef ENABLE_PLUGINS
168 { {"plugin", required_argument, NULL, OPTION_PLUGIN},
169 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
170 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
171 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
172 { {"flto", optional_argument, NULL, OPTION_IGNORE},
173 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
174 ONE_DASH },
175 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
176 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
177 ONE_DASH },
178 #endif /* ENABLE_PLUGINS */
179 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE},
180 '\0', NULL, N_("Ignored for GCC linker option compatibility"),
181 ONE_DASH },
182 { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE},
183 '\0', NULL, N_("Ignored for gold option compatibility"),
184 TWO_DASHES },
185 { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE},
186 '\0', NULL, N_("Ignored for gold option compatibility"),
187 TWO_DASHES },
188 { {"Qy", no_argument, NULL, OPTION_IGNORE},
189 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
190 { {"emit-relocs", no_argument, NULL, 'q'},
191 'q', NULL, "Generate relocations in final output", TWO_DASHES },
192 { {"relocatable", no_argument, NULL, 'r'},
193 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
194 { {NULL, no_argument, NULL, '\0'},
195 'i', NULL, NULL, ONE_DASH },
196 { {"just-symbols", required_argument, NULL, 'R'},
197 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
198 TWO_DASHES },
199 { {"strip-all", no_argument, NULL, 's'},
200 's', NULL, N_("Strip all symbols"), TWO_DASHES },
201 { {"strip-debug", no_argument, NULL, 'S'},
202 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
203 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
204 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
205 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
206 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
207 { {"trace", no_argument, NULL, 't'},
208 't', NULL, N_("Trace file opens"), TWO_DASHES },
209 { {"script", required_argument, NULL, 'T'},
210 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
211 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
212 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
213 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
214 '\0', NULL, NULL, ONE_DASH },
215 { {"undefined", required_argument, NULL, 'u'},
216 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
217 TWO_DASHES },
218 { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL},
219 '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"),
220 TWO_DASHES },
221 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
222 '\0', N_("[=SECTION]"),
223 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
224 { {"Ur", no_argument, NULL, OPTION_UR},
225 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
226 { {"version", no_argument, NULL, OPTION_VERSION},
227 'v', NULL, N_("Print version information"), TWO_DASHES },
228 { {NULL, no_argument, NULL, '\0'},
229 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
230 { {"discard-all", no_argument, NULL, 'x'},
231 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
232 { {"discard-locals", no_argument, NULL, 'X'},
233 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
234 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
235 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
236 { {"trace-symbol", required_argument, NULL, 'y'},
237 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
238 { {NULL, required_argument, NULL, '\0'},
239 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
240 ONE_DASH },
241 { {"start-group", no_argument, NULL, '('},
242 '(', NULL, N_("Start a group"), TWO_DASHES },
243 { {"end-group", no_argument, NULL, ')'},
244 ')', NULL, N_("End a group"), TWO_DASHES },
245 { {"accept-unknown-input-arch", no_argument, NULL,
246 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
247 '\0', NULL,
248 N_("Accept input files whose architecture cannot be determined"),
249 TWO_DASHES },
250 { {"no-accept-unknown-input-arch", no_argument, NULL,
251 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
252 '\0', NULL, N_("Reject input files whose architecture is unknown"),
253 TWO_DASHES },
254
255 /* The next two options are deprecated because of their similarity to
256 --as-needed and --no-as-needed. They have been replaced by
257 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */
258 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
259 '\0', NULL, NULL, NO_HELP },
260 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
261 '\0', NULL, NULL, NO_HELP },
262
263 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
264 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
265 TWO_DASHES },
266 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
267 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
268 " the command line"),
269 TWO_DASHES },
270 { {"assert", required_argument, NULL, OPTION_ASSERT},
271 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
272 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
273 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
274 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
275 '\0', NULL, NULL, ONE_DASH },
276 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
277 '\0', NULL, NULL, ONE_DASH },
278 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
279 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
280 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
281 '\0', NULL, NULL, ONE_DASH },
282 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
283 '\0', NULL, NULL, ONE_DASH },
284 { {"static", no_argument, NULL, OPTION_NON_SHARED},
285 '\0', NULL, NULL, ONE_DASH },
286 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
287 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
288 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
289 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
290 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
291 '\0', NULL, N_("Check section addresses for overlaps (default)"),
292 TWO_DASHES },
293 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
294 '\0', NULL, N_("Do not check section addresses for overlaps"),
295 TWO_DASHES },
296 { {"copy-dt-needed-entries", no_argument, NULL,
297 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
298 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
299 TWO_DASHES },
300 { {"no-copy-dt-needed-entries", no_argument, NULL,
301 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
302 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
303 TWO_DASHES },
304
305 { {"cref", no_argument, NULL, OPTION_CREF},
306 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
307 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
308 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
309 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
310 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
311 TWO_DASHES },
312 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
313 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
314 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
315 '\0', NULL, N_("Treat warnings as errors"),
316 TWO_DASHES },
317 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
318 '\0', NULL, N_("Do not treat warnings as errors (default)"),
319 TWO_DASHES },
320 { {"fini", required_argument, NULL, OPTION_FINI},
321 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
322 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
323 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
324 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
325 '\0', NULL, N_("Remove unused sections (on some targets)"),
326 TWO_DASHES },
327 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
328 '\0', NULL, N_("Don't remove unused sections (default)"),
329 TWO_DASHES },
330 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
331 '\0', NULL, N_("List removed unused sections on stderr"),
332 TWO_DASHES },
333 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
334 '\0', NULL, N_("Do not list removed unused sections"),
335 TWO_DASHES },
336 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
337 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
338 TWO_DASHES },
339 { {"help", no_argument, NULL, OPTION_HELP},
340 '\0', NULL, N_("Print option help"), TWO_DASHES },
341 { {"init", required_argument, NULL, OPTION_INIT},
342 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
343 { {"Map", required_argument, NULL, OPTION_MAP},
344 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
345 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
346 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
347 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
348 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
349 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
350 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
351 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
352 '\0', NULL, N_("Do not allow unresolved references in object files"),
353 TWO_DASHES },
354 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
355 '\0', NULL, N_("Allow unresolved references in shared libraries"),
356 TWO_DASHES },
357 { {"no-allow-shlib-undefined", no_argument, NULL,
358 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
359 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
360 TWO_DASHES },
361 { {"allow-multiple-definition", no_argument, NULL,
362 OPTION_ALLOW_MULTIPLE_DEFINITION},
363 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
364 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
365 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
366 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
367 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
368 { {"default-imported-symver", no_argument, NULL,
369 OPTION_DEFAULT_IMPORTED_SYMVER},
370 '\0', NULL, N_("Create default symbol version for imported symbols"),
371 TWO_DASHES },
372 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
373 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
374 { {"no-warn-search-mismatch", no_argument, NULL,
375 OPTION_NO_WARN_SEARCH_MISMATCH},
376 '\0', NULL, N_("Don't warn on finding an incompatible library"),
377 TWO_DASHES},
378 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
379 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
380 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
381 '\0', NULL, N_("Create an output file even if errors occur"),
382 TWO_DASHES },
383 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
384 '\0', NULL, NULL, NO_HELP },
385 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
386 '\0', NULL, N_("Only use library directories specified on\n"
387 " the command line"),
388 ONE_DASH },
389 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
390 '\0', N_("TARGET"), N_("Specify target of output file"),
391 EXACTLY_TWO_DASHES },
392 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
393 '\0', NULL, N_("Print default output format"), TWO_DASHES },
394 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT},
395 '\0', NULL, N_("Print current sysroot"), TWO_DASHES },
396 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
397 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
398 { {"reduce-memory-overheads", no_argument, NULL,
399 OPTION_REDUCE_MEMORY_OVERHEADS},
400 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
401 TWO_DASHES },
402 { {"relax", no_argument, NULL, OPTION_RELAX},
403 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
404 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
405 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
406 { {"retain-symbols-file", required_argument, NULL,
407 OPTION_RETAIN_SYMBOLS_FILE},
408 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
409 { {"rpath", required_argument, NULL, OPTION_RPATH},
410 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
411 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
412 '\0', N_("PATH"), N_("Set link time shared library search path"),
413 ONE_DASH },
414 { {"shared", no_argument, NULL, OPTION_SHARED},
415 '\0', NULL, N_("Create a shared library"), ONE_DASH },
416 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
417 '\0', NULL, NULL, ONE_DASH },
418 { {"pie", no_argument, NULL, OPTION_PIE},
419 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
420 { {"pic-executable", no_argument, NULL, OPTION_PIE},
421 '\0', NULL, NULL, TWO_DASHES },
422 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
423 '\0', N_("[=ascending|descending]"),
424 N_("Sort common symbols by alignment [in specified order]"),
425 TWO_DASHES },
426 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
427 '\0', NULL, NULL, NO_HELP },
428 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
429 '\0', N_("name|alignment"),
430 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
431 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
432 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
433 TWO_DASHES },
434 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
435 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
436 TWO_DASHES },
437 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
438 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
439 TWO_DASHES },
440 { {"stats", no_argument, NULL, OPTION_STATS},
441 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
442 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
443 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
444 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
445 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
446 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
447 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
448 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
449 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
450 TWO_DASHES },
451 { {"Tbss", required_argument, NULL, OPTION_TBSS},
452 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
453 { {"Tdata", required_argument, NULL, OPTION_TDATA},
454 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
455 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
456 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
457 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
458 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
459 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT},
460 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH },
461 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT},
462 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH },
463 { {"unresolved-symbols=<method>", required_argument, NULL,
464 OPTION_UNRESOLVED_SYMBOLS},
465 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
466 " ignore-all, report-all, ignore-in-object-files,\n"
467 " ignore-in-shared-libs"),
468 TWO_DASHES },
469 { {"verbose", optional_argument, NULL, OPTION_VERBOSE},
470 '\0', N_("[=NUMBER]"),
471 N_("Output lots of information during link"), TWO_DASHES },
472 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
473 '\0', NULL, NULL, NO_HELP },
474 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
475 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
476 { {"version-exports-section", required_argument, NULL,
477 OPTION_VERSION_EXPORTS_SECTION },
478 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
479 " SYMBOL as the version."),
480 TWO_DASHES },
481 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
482 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
483 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
484 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
485 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
486 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
487 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
488 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
489 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
490 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
491 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
492 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
493 TWO_DASHES },
494 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
495 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
496 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
497 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
498 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
499 '\0', NULL, N_("Warn if start of section changes due to alignment"),
500 TWO_DASHES },
501 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
502 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
503 TWO_DASHES },
504 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
505 '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
506 TWO_DASHES },
507 { {"warn-unresolved-symbols", no_argument, NULL,
508 OPTION_WARN_UNRESOLVED_SYMBOLS},
509 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
510 { {"error-unresolved-symbols", no_argument, NULL,
511 OPTION_ERROR_UNRESOLVED_SYMBOLS},
512 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
513 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
514 '\0', NULL, N_("Include all objects from following archives"),
515 TWO_DASHES },
516 { {"wrap", required_argument, NULL, OPTION_WRAP},
517 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
518 { {"ignore-unresolved-symbol", required_argument, NULL,
519 OPTION_IGNORE_UNRESOLVED_SYMBOL},
520 '\0', N_("SYMBOL"),
521 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
522 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE},
523 '\0', NULL, N_("Push state of flags governing input file handling"),
524 TWO_DASHES },
525 { {"pop-state", no_argument, NULL, OPTION_POP_STATE},
526 '\0', NULL, N_("Pop state of flags governing input file handling"),
527 TWO_DASHES },
528 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE},
529 '\0', NULL, N_("Report target memory usage"), TWO_DASHES },
530 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING},
531 '\0', N_("=MODE"), N_("Control how orphan sections are handled."),
532 TWO_DASHES },
533 };
534
535 #define OPTION_COUNT ARRAY_SIZE (ld_options)
536
537 void
538 parse_args (unsigned argc, char **argv)
539 {
540 unsigned i;
541 int is, il, irl;
542 int ingroup = 0;
543 char *default_dirlist = NULL;
544 char *shortopts;
545 struct option *longopts;
546 struct option *really_longopts;
547 int last_optind;
548 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
549
550 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
551 longopts = (struct option *)
552 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
553 really_longopts = (struct option *)
554 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
555
556 /* Starting the short option string with '-' is for programs that
557 expect options and other ARGV-elements in any order and that care about
558 the ordering of the two. We describe each non-option ARGV-element
559 as if it were the argument of an option with character code 1. */
560 shortopts[0] = '-';
561 is = 1;
562 il = 0;
563 irl = 0;
564 for (i = 0; i < OPTION_COUNT; i++)
565 {
566 if (ld_options[i].shortopt != '\0')
567 {
568 shortopts[is] = ld_options[i].shortopt;
569 ++is;
570 if (ld_options[i].opt.has_arg == required_argument
571 || ld_options[i].opt.has_arg == optional_argument)
572 {
573 shortopts[is] = ':';
574 ++is;
575 if (ld_options[i].opt.has_arg == optional_argument)
576 {
577 shortopts[is] = ':';
578 ++is;
579 }
580 }
581 }
582 if (ld_options[i].opt.name != NULL)
583 {
584 if (ld_options[i].control == EXACTLY_TWO_DASHES)
585 {
586 really_longopts[irl] = ld_options[i].opt;
587 ++irl;
588 }
589 else
590 {
591 longopts[il] = ld_options[i].opt;
592 ++il;
593 }
594 }
595 }
596 shortopts[is] = '\0';
597 longopts[il].name = NULL;
598 really_longopts[irl].name = NULL;
599
600 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
601
602 /* The -G option is ambiguous on different platforms. Sometimes it
603 specifies the largest data size to put into the small data
604 section. Sometimes it is equivalent to --shared. Unfortunately,
605 the first form takes an argument, while the second does not.
606
607 We need to permit the --shared form because on some platforms,
608 such as Solaris, gcc -shared will pass -G to the linker.
609
610 To permit either usage, we look through the argument list. If we
611 find -G not followed by a number, we change it into --shared.
612 This will work for most normal cases. */
613 for (i = 1; i < argc; i++)
614 if (strcmp (argv[i], "-G") == 0
615 && (i + 1 >= argc
616 || ! ISDIGIT (argv[i + 1][0])))
617 argv[i] = (char *) "--shared";
618
619 /* Because we permit long options to start with a single dash, and
620 we have a --library option, and the -l option is conventionally
621 used with an immediately following argument, we can have bad
622 results if somebody tries to use -l with a library whose name
623 happens to start with "ibrary", as in -li. We avoid problems by
624 simply turning -l into --library. This means that users will
625 have to use two dashes in order to use --library, which is OK
626 since that's how it is documented.
627
628 FIXME: It's possible that this problem can arise for other short
629 options as well, although the user does always have the recourse
630 of adding a space between the option and the argument. */
631 for (i = 1; i < argc; i++)
632 {
633 if (argv[i][0] == '-'
634 && argv[i][1] == 'l'
635 && argv[i][2] != '\0')
636 {
637 char *n;
638
639 n = (char *) xmalloc (strlen (argv[i]) + 20);
640 sprintf (n, "--library=%s", argv[i] + 2);
641 argv[i] = n;
642 }
643 }
644
645 last_optind = -1;
646 while (1)
647 {
648 int longind;
649 int optc;
650 static unsigned int defsym_count;
651
652 /* Using last_optind lets us avoid calling ldemul_parse_args
653 multiple times on a single option, which would lead to
654 confusion in the internal static variables maintained by
655 getopt. This could otherwise happen for an argument like
656 -nx, in which the -n is parsed as a single option, and we
657 loop around to pick up the -x. */
658 if (optind != last_optind)
659 if (ldemul_parse_args (argc, argv))
660 continue;
661
662 /* getopt_long_only is like getopt_long, but '-' as well as '--'
663 can indicate a long option. */
664 opterr = 0;
665 last_optind = optind;
666 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
667 if (optc == '?')
668 {
669 optind = last_optind;
670 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
671 }
672
673 if (ldemul_handle_option (optc))
674 continue;
675
676 if (optc == -1)
677 break;
678
679 switch (optc)
680 {
681 case '?':
682 {
683 /* If the last word on the command line is an option that
684 requires an argument, getopt will refuse to recognise it.
685 Try to catch such options here and issue a more helpful
686 error message than just "unrecognized option". */
687 int opt;
688
689 for (opt = ARRAY_SIZE (ld_options); opt--;)
690 if (ld_options[opt].opt.has_arg == required_argument
691 /* FIXME: There are a few short options that do not
692 have long equivalents, but which require arguments.
693 We should handle them too. */
694 && ld_options[opt].opt.name != NULL
695 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0)
696 {
697 einfo (_("%P: %s: missing argument\n"), argv[last_optind]);
698 break;
699 }
700
701 if (opt == -1)
702 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
703 }
704 /* Fall through. */
705
706 default:
707 einfo (_("%P%F: use the --help option for usage information\n"));
708
709 case 1: /* File name. */
710 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
711 break;
712
713 case OPTION_IGNORE:
714 break;
715 case 'a':
716 /* For HP/UX compatibility. Actually -a shared should mean
717 ``use only shared libraries'' but, then, we don't
718 currently support shared libraries on HP/UX anyhow. */
719 if (strcmp (optarg, "archive") == 0)
720 input_flags.dynamic = FALSE;
721 else if (strcmp (optarg, "shared") == 0
722 || strcmp (optarg, "default") == 0)
723 input_flags.dynamic = TRUE;
724 else
725 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
726 break;
727 case OPTION_ASSERT:
728 /* FIXME: We just ignore these, but we should handle them. */
729 if (strcmp (optarg, "definitions") == 0)
730 ;
731 else if (strcmp (optarg, "nodefinitions") == 0)
732 ;
733 else if (strcmp (optarg, "nosymbolic") == 0)
734 ;
735 else if (strcmp (optarg, "pure-text") == 0)
736 ;
737 else
738 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
739 break;
740 case 'A':
741 ldfile_add_arch (optarg);
742 break;
743 case 'b':
744 lang_add_target (optarg);
745 break;
746 case 'c':
747 ldfile_open_command_file (optarg);
748 parser_input = input_mri_script;
749 yyparse ();
750 break;
751 case OPTION_CALL_SHARED:
752 input_flags.dynamic = TRUE;
753 break;
754 case OPTION_NON_SHARED:
755 input_flags.dynamic = FALSE;
756 break;
757 case OPTION_CREF:
758 command_line.cref = TRUE;
759 link_info.notice_all = TRUE;
760 break;
761 case 'd':
762 command_line.force_common_definition = TRUE;
763 break;
764 case OPTION_DEFSYM:
765 lex_string = optarg;
766 lex_redirect (optarg, "--defsym", ++defsym_count);
767 parser_input = input_defsym;
768 yyparse ();
769 lex_string = NULL;
770 break;
771 case OPTION_DEMANGLE:
772 demangling = TRUE;
773 if (optarg != NULL)
774 {
775 enum demangling_styles style;
776
777 style = cplus_demangle_name_to_style (optarg);
778 if (style == unknown_demangling)
779 einfo (_("%F%P: unknown demangling style `%s'\n"),
780 optarg);
781
782 cplus_demangle_set_style (style);
783 }
784 break;
785 case 'I': /* Used on Solaris. */
786 case OPTION_DYNAMIC_LINKER:
787 command_line.interpreter = optarg;
788 link_info.nointerp = 0;
789 break;
790 case OPTION_NO_DYNAMIC_LINKER:
791 link_info.nointerp = 1;
792 break;
793 case OPTION_SYSROOT:
794 /* Already handled in ldmain.c. */
795 break;
796 case OPTION_EB:
797 command_line.endian = ENDIAN_BIG;
798 break;
799 case OPTION_EL:
800 command_line.endian = ENDIAN_LITTLE;
801 break;
802 case OPTION_EMBEDDED_RELOCS:
803 command_line.embedded_relocs = TRUE;
804 break;
805 case OPTION_EXPORT_DYNAMIC:
806 case 'E': /* HP/UX compatibility. */
807 link_info.export_dynamic = TRUE;
808 break;
809 case OPTION_NO_EXPORT_DYNAMIC:
810 link_info.export_dynamic = FALSE;
811 break;
812 case 'e':
813 lang_add_entry (optarg, TRUE);
814 break;
815 case 'f':
816 if (command_line.auxiliary_filters == NULL)
817 {
818 command_line.auxiliary_filters = (char **)
819 xmalloc (2 * sizeof (char *));
820 command_line.auxiliary_filters[0] = optarg;
821 command_line.auxiliary_filters[1] = NULL;
822 }
823 else
824 {
825 int c;
826 char **p;
827
828 c = 0;
829 for (p = command_line.auxiliary_filters; *p != NULL; p++)
830 ++c;
831 command_line.auxiliary_filters = (char **)
832 xrealloc (command_line.auxiliary_filters,
833 (c + 2) * sizeof (char *));
834 command_line.auxiliary_filters[c] = optarg;
835 command_line.auxiliary_filters[c + 1] = NULL;
836 }
837 break;
838 case 'F':
839 command_line.filter_shlib = optarg;
840 break;
841 case OPTION_FORCE_EXE_SUFFIX:
842 command_line.force_exe_suffix = TRUE;
843 break;
844 case 'G':
845 {
846 char *end;
847 g_switch_value = strtoul (optarg, &end, 0);
848 if (*end)
849 einfo (_("%P%F: invalid number `%s'\n"), optarg);
850 }
851 break;
852 case 'g':
853 /* Ignore. */
854 break;
855 case OPTION_GC_SECTIONS:
856 link_info.gc_sections = TRUE;
857 break;
858 case OPTION_PRINT_GC_SECTIONS:
859 link_info.print_gc_sections = TRUE;
860 break;
861 case OPTION_HELP:
862 help ();
863 xexit (0);
864 break;
865 case 'L':
866 ldfile_add_library_path (optarg, TRUE);
867 break;
868 case 'l':
869 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
870 break;
871 case 'M':
872 config.map_filename = "-";
873 break;
874 case 'm':
875 /* Ignore. Was handled in a pre-parse. */
876 break;
877 case OPTION_MAP:
878 config.map_filename = optarg;
879 break;
880 case 'N':
881 config.text_read_only = FALSE;
882 config.magic_demand_paged = FALSE;
883 input_flags.dynamic = FALSE;
884 break;
885 case OPTION_NO_OMAGIC:
886 config.text_read_only = TRUE;
887 config.magic_demand_paged = TRUE;
888 /* NB/ Does not set input_flags.dynamic to TRUE.
889 Use --call-shared or -Bdynamic for this. */
890 break;
891 case 'n':
892 config.magic_demand_paged = FALSE;
893 input_flags.dynamic = FALSE;
894 break;
895 case OPTION_NO_DEFINE_COMMON:
896 command_line.inhibit_common_definition = TRUE;
897 break;
898 case OPTION_NO_DEMANGLE:
899 demangling = FALSE;
900 break;
901 case OPTION_NO_GC_SECTIONS:
902 link_info.gc_sections = FALSE;
903 break;
904 case OPTION_NO_PRINT_GC_SECTIONS:
905 link_info.print_gc_sections = FALSE;
906 break;
907 case OPTION_NO_KEEP_MEMORY:
908 link_info.keep_memory = FALSE;
909 break;
910 case OPTION_NO_UNDEFINED:
911 link_info.unresolved_syms_in_objects
912 = how_to_report_unresolved_symbols;
913 break;
914 case OPTION_ALLOW_SHLIB_UNDEFINED:
915 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
916 break;
917 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
918 link_info.unresolved_syms_in_shared_libs
919 = how_to_report_unresolved_symbols;
920 break;
921 case OPTION_UNRESOLVED_SYMBOLS:
922 if (strcmp (optarg, "ignore-all") == 0)
923 {
924 link_info.unresolved_syms_in_objects = RM_IGNORE;
925 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
926 }
927 else if (strcmp (optarg, "report-all") == 0)
928 {
929 link_info.unresolved_syms_in_objects
930 = how_to_report_unresolved_symbols;
931 link_info.unresolved_syms_in_shared_libs
932 = how_to_report_unresolved_symbols;
933 }
934 else if (strcmp (optarg, "ignore-in-object-files") == 0)
935 {
936 link_info.unresolved_syms_in_objects = RM_IGNORE;
937 link_info.unresolved_syms_in_shared_libs
938 = how_to_report_unresolved_symbols;
939 }
940 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
941 {
942 link_info.unresolved_syms_in_objects
943 = how_to_report_unresolved_symbols;
944 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
945 }
946 else
947 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
948 break;
949 case OPTION_WARN_UNRESOLVED_SYMBOLS:
950 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
951 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
952 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
953 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
954 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
955 break;
956
957 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
958 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
959 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
960 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
961 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
962 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
963 break;
964 case OPTION_ALLOW_MULTIPLE_DEFINITION:
965 link_info.allow_multiple_definition = TRUE;
966 break;
967 case OPTION_NO_UNDEFINED_VERSION:
968 link_info.allow_undefined_version = FALSE;
969 break;
970 case OPTION_DEFAULT_SYMVER:
971 link_info.create_default_symver = TRUE;
972 break;
973 case OPTION_DEFAULT_IMPORTED_SYMVER:
974 link_info.default_imported_symver = TRUE;
975 break;
976 case OPTION_NO_WARN_MISMATCH:
977 command_line.warn_mismatch = FALSE;
978 break;
979 case OPTION_NO_WARN_SEARCH_MISMATCH:
980 command_line.warn_search_mismatch = FALSE;
981 break;
982 case OPTION_NOINHIBIT_EXEC:
983 force_make_executable = TRUE;
984 break;
985 case OPTION_NOSTDLIB:
986 config.only_cmd_line_lib_dirs = TRUE;
987 break;
988 case OPTION_NO_WHOLE_ARCHIVE:
989 input_flags.whole_archive = FALSE;
990 break;
991 case 'O':
992 /* FIXME "-O<non-digits> <value>" used to set the address of
993 section <non-digits>. Was this for compatibility with
994 something, or can we create a new option to do that
995 (with a syntax similar to -defsym)?
996 getopt can't handle two args to an option without kludges. */
997
998 /* Enable optimizations of output files. */
999 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1000 break;
1001 case 'o':
1002 lang_add_output (optarg, 0);
1003 break;
1004 case OPTION_OFORMAT:
1005 lang_add_output_format (optarg, NULL, NULL, 0);
1006 break;
1007 case OPTION_PRINT_SYSROOT:
1008 if (*ld_sysroot)
1009 puts (ld_sysroot);
1010 xexit (0);
1011 break;
1012 case OPTION_PRINT_OUTPUT_FORMAT:
1013 command_line.print_output_format = TRUE;
1014 break;
1015 #ifdef ENABLE_PLUGINS
1016 case OPTION_PLUGIN:
1017 plugin_opt_plugin (optarg);
1018 break;
1019 case OPTION_PLUGIN_OPT:
1020 if (plugin_opt_plugin_arg (optarg))
1021 einfo (_("%P%F: bad -plugin-opt option\n"));
1022 break;
1023 #endif /* ENABLE_PLUGINS */
1024 case 'q':
1025 link_info.emitrelocations = TRUE;
1026 break;
1027 case 'i':
1028 case 'r':
1029 if (optind == last_optind)
1030 /* This can happen if the user put "-rpath,a" on the command
1031 line. (Or something similar. The comma is important).
1032 Getopt becomes confused and thinks that this is a -r option
1033 but it cannot parse the text after the -r so it refuses to
1034 increment the optind counter. Detect this case and issue
1035 an error message here. We cannot just make this a warning,
1036 increment optind, and continue because getopt is too confused
1037 and will seg-fault the next time around. */
1038 einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]);
1039
1040 if (bfd_link_pic (&link_info))
1041 einfo (_("%P%F: -r and %s may not be used together\n"),
1042 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1043
1044 link_info.type = type_relocatable;
1045 config.build_constructors = FALSE;
1046 config.magic_demand_paged = FALSE;
1047 config.text_read_only = FALSE;
1048 input_flags.dynamic = FALSE;
1049 break;
1050 case 'R':
1051 /* The GNU linker traditionally uses -R to mean to include
1052 only the symbols from a file. The Solaris linker uses -R
1053 to set the path used by the runtime linker to find
1054 libraries. This is the GNU linker -rpath argument. We
1055 try to support both simultaneously by checking the file
1056 named. If it is a directory, rather than a regular file,
1057 we assume -rpath was meant. */
1058 {
1059 struct stat s;
1060
1061 if (stat (optarg, &s) >= 0
1062 && ! S_ISDIR (s.st_mode))
1063 {
1064 lang_add_input_file (optarg,
1065 lang_input_file_is_symbols_only_enum,
1066 NULL);
1067 break;
1068 }
1069 }
1070 /* Fall through. */
1071 case OPTION_RPATH:
1072 if (command_line.rpath == NULL)
1073 command_line.rpath = xstrdup (optarg);
1074 else
1075 {
1076 size_t rpath_len = strlen (command_line.rpath);
1077 size_t optarg_len = strlen (optarg);
1078 char *buf;
1079 char *cp = command_line.rpath;
1080
1081 /* First see whether OPTARG is already in the path. */
1082 do
1083 {
1084 if (strncmp (optarg, cp, optarg_len) == 0
1085 && (cp[optarg_len] == 0
1086 || cp[optarg_len] == config.rpath_separator))
1087 /* We found it. */
1088 break;
1089
1090 /* Not yet found. */
1091 cp = strchr (cp, config.rpath_separator);
1092 if (cp != NULL)
1093 ++cp;
1094 }
1095 while (cp != NULL);
1096
1097 if (cp == NULL)
1098 {
1099 buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1100 sprintf (buf, "%s%c%s", command_line.rpath,
1101 config.rpath_separator, optarg);
1102 free (command_line.rpath);
1103 command_line.rpath = buf;
1104 }
1105 }
1106 break;
1107 case OPTION_RPATH_LINK:
1108 if (command_line.rpath_link == NULL)
1109 command_line.rpath_link = xstrdup (optarg);
1110 else
1111 {
1112 char *buf;
1113
1114 buf = (char *) xmalloc (strlen (command_line.rpath_link)
1115 + strlen (optarg)
1116 + 2);
1117 sprintf (buf, "%s%c%s", command_line.rpath_link,
1118 config.rpath_separator, optarg);
1119 free (command_line.rpath_link);
1120 command_line.rpath_link = buf;
1121 }
1122 break;
1123 case OPTION_NO_RELAX:
1124 DISABLE_RELAXATION;
1125 break;
1126 case OPTION_RELAX:
1127 ENABLE_RELAXATION;
1128 break;
1129 case OPTION_RETAIN_SYMBOLS_FILE:
1130 add_keepsyms_file (optarg);
1131 break;
1132 case 'S':
1133 link_info.strip = strip_debugger;
1134 break;
1135 case 's':
1136 link_info.strip = strip_all;
1137 break;
1138 case OPTION_STRIP_DISCARDED:
1139 link_info.strip_discarded = TRUE;
1140 break;
1141 case OPTION_NO_STRIP_DISCARDED:
1142 link_info.strip_discarded = FALSE;
1143 break;
1144 case OPTION_SHARED:
1145 if (config.has_shared)
1146 {
1147 if (bfd_link_relocatable (&link_info))
1148 einfo (_("%P%F: -r and -shared may not be used together\n"));
1149
1150 link_info.type = type_dll;
1151 /* When creating a shared library, the default
1152 behaviour is to ignore any unresolved references. */
1153 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1154 link_info.unresolved_syms_in_objects = RM_IGNORE;
1155 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1156 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1157 }
1158 else
1159 einfo (_("%P%F: -shared not supported\n"));
1160 break;
1161 case OPTION_PIE:
1162 if (config.has_shared)
1163 {
1164 if (bfd_link_relocatable (&link_info))
1165 einfo (_("%P%F: -r and -pie may not be used together\n"));
1166
1167 link_info.type = type_pie;
1168 }
1169 else
1170 einfo (_("%P%F: -pie not supported\n"));
1171 break;
1172 case 'h': /* Used on Solaris. */
1173 case OPTION_SONAME:
1174 if (optarg[0] == '\0' && command_line.soname
1175 && command_line.soname[0])
1176 einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
1177 else
1178 command_line.soname = optarg;
1179 break;
1180 case OPTION_SORT_COMMON:
1181 if (optarg == NULL
1182 || strcmp (optarg, N_("descending")) == 0)
1183 config.sort_common = sort_descending;
1184 else if (strcmp (optarg, N_("ascending")) == 0)
1185 config.sort_common = sort_ascending;
1186 else
1187 einfo (_("%P%F: invalid common section sorting option: %s\n"),
1188 optarg);
1189 break;
1190 case OPTION_SORT_SECTION:
1191 if (strcmp (optarg, N_("name")) == 0)
1192 sort_section = by_name;
1193 else if (strcmp (optarg, N_("alignment")) == 0)
1194 sort_section = by_alignment;
1195 else
1196 einfo (_("%P%F: invalid section sorting option: %s\n"),
1197 optarg);
1198 break;
1199 case OPTION_STATS:
1200 config.stats = TRUE;
1201 break;
1202 case OPTION_SYMBOLIC:
1203 command_line.symbolic = symbolic;
1204 break;
1205 case OPTION_SYMBOLIC_FUNCTIONS:
1206 command_line.symbolic = symbolic_functions;
1207 break;
1208 case 't':
1209 trace_files = TRUE;
1210 break;
1211 case 'T':
1212 previous_script_handle = saved_script_handle;
1213 ldfile_open_command_file (optarg);
1214 parser_input = input_script;
1215 yyparse ();
1216 previous_script_handle = NULL;
1217 break;
1218 case OPTION_DEFAULT_SCRIPT:
1219 command_line.default_script = optarg;
1220 break;
1221 case OPTION_SECTION_START:
1222 {
1223 char *optarg2;
1224 char *sec_name;
1225 int len;
1226
1227 /* Check for <something>=<somthing>... */
1228 optarg2 = strchr (optarg, '=');
1229 if (optarg2 == NULL)
1230 einfo (_("%P%F: invalid argument to option"
1231 " \"--section-start\"\n"));
1232
1233 optarg2++;
1234
1235 /* So far so good. Are all the args present? */
1236 if ((*optarg == '\0') || (*optarg2 == '\0'))
1237 einfo (_("%P%F: missing argument(s) to option"
1238 " \"--section-start\"\n"));
1239
1240 /* We must copy the section name as set_section_start
1241 doesn't do it for us. */
1242 len = optarg2 - optarg;
1243 sec_name = (char *) xmalloc (len);
1244 memcpy (sec_name, optarg, len - 1);
1245 sec_name[len - 1] = 0;
1246
1247 /* Then set it... */
1248 set_section_start (sec_name, optarg2);
1249 }
1250 break;
1251 case OPTION_TARGET_HELP:
1252 /* Mention any target specific options. */
1253 ldemul_list_emulation_options (stdout);
1254 exit (0);
1255 case OPTION_TBSS:
1256 set_segment_start (".bss", optarg);
1257 break;
1258 case OPTION_TDATA:
1259 set_segment_start (".data", optarg);
1260 break;
1261 case OPTION_TTEXT:
1262 set_segment_start (".text", optarg);
1263 break;
1264 case OPTION_TTEXT_SEGMENT:
1265 set_segment_start (".text-segment", optarg);
1266 break;
1267 case OPTION_TRODATA_SEGMENT:
1268 set_segment_start (".rodata-segment", optarg);
1269 break;
1270 case OPTION_TLDATA_SEGMENT:
1271 set_segment_start (".ldata-segment", optarg);
1272 break;
1273 case OPTION_TRADITIONAL_FORMAT:
1274 link_info.traditional_format = TRUE;
1275 break;
1276 case OPTION_TASK_LINK:
1277 link_info.task_link = TRUE;
1278 /* Fall through - do an implied -r option. */
1279 case OPTION_UR:
1280 if (bfd_link_pic (&link_info))
1281 einfo (_("%P%F: -r and %s may not be used together\n"),
1282 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1283
1284 link_info.type = type_relocatable;
1285 config.build_constructors = TRUE;
1286 config.magic_demand_paged = FALSE;
1287 config.text_read_only = FALSE;
1288 input_flags.dynamic = FALSE;
1289 break;
1290 case 'u':
1291 ldlang_add_undef (optarg, TRUE);
1292 break;
1293 case OPTION_REQUIRE_DEFINED_SYMBOL:
1294 ldlang_add_require_defined (optarg);
1295 break;
1296 case OPTION_UNIQUE:
1297 if (optarg != NULL)
1298 lang_add_unique (optarg);
1299 else
1300 config.unique_orphan_sections = TRUE;
1301 break;
1302 case OPTION_VERBOSE:
1303 ldversion (1);
1304 version_printed = TRUE;
1305 verbose = TRUE;
1306 overflow_cutoff_limit = -2;
1307 if (optarg != NULL)
1308 {
1309 char *end;
1310 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1311 if (*end)
1312 einfo (_("%P%F: invalid number `%s'\n"), optarg);
1313 #ifdef ENABLE_PLUGINS
1314 report_plugin_symbols = level > 1;
1315 #endif /* ENABLE_PLUGINS */
1316 }
1317 break;
1318 case 'v':
1319 ldversion (0);
1320 version_printed = TRUE;
1321 break;
1322 case 'V':
1323 ldversion (1);
1324 version_printed = TRUE;
1325 break;
1326 case OPTION_VERSION:
1327 ldversion (2);
1328 xexit (0);
1329 break;
1330 case OPTION_VERSION_SCRIPT:
1331 /* This option indicates a small script that only specifies
1332 version information. Read it, but don't assume that
1333 we've seen a linker script. */
1334 {
1335 FILE *hold_script_handle;
1336
1337 hold_script_handle = saved_script_handle;
1338 ldfile_open_command_file (optarg);
1339 saved_script_handle = hold_script_handle;
1340 parser_input = input_version_script;
1341 yyparse ();
1342 }
1343 break;
1344 case OPTION_VERSION_EXPORTS_SECTION:
1345 /* This option records a version symbol to be applied to the
1346 symbols listed for export to be found in the object files
1347 .exports sections. */
1348 command_line.version_exports_section = optarg;
1349 break;
1350 case OPTION_DYNAMIC_LIST_DATA:
1351 command_line.dynamic_list = dynamic_list_data;
1352 if (command_line.symbolic == symbolic)
1353 command_line.symbolic = symbolic_unset;
1354 break;
1355 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1356 lang_append_dynamic_list_cpp_typeinfo ();
1357 if (command_line.dynamic_list != dynamic_list_data)
1358 command_line.dynamic_list = dynamic_list;
1359 if (command_line.symbolic == symbolic)
1360 command_line.symbolic = symbolic_unset;
1361 break;
1362 case OPTION_DYNAMIC_LIST_CPP_NEW:
1363 lang_append_dynamic_list_cpp_new ();
1364 if (command_line.dynamic_list != dynamic_list_data)
1365 command_line.dynamic_list = dynamic_list;
1366 if (command_line.symbolic == symbolic)
1367 command_line.symbolic = symbolic_unset;
1368 break;
1369 case OPTION_DYNAMIC_LIST:
1370 /* This option indicates a small script that only specifies
1371 a dynamic list. Read it, but don't assume that we've
1372 seen a linker script. */
1373 {
1374 FILE *hold_script_handle;
1375
1376 hold_script_handle = saved_script_handle;
1377 ldfile_open_command_file (optarg);
1378 saved_script_handle = hold_script_handle;
1379 parser_input = input_dynamic_list;
1380 yyparse ();
1381 }
1382 if (command_line.dynamic_list != dynamic_list_data)
1383 command_line.dynamic_list = dynamic_list;
1384 if (command_line.symbolic == symbolic)
1385 command_line.symbolic = symbolic_unset;
1386 break;
1387 case OPTION_WARN_COMMON:
1388 config.warn_common = TRUE;
1389 break;
1390 case OPTION_WARN_CONSTRUCTORS:
1391 config.warn_constructors = TRUE;
1392 break;
1393 case OPTION_WARN_FATAL:
1394 config.fatal_warnings = TRUE;
1395 break;
1396 case OPTION_NO_WARN_FATAL:
1397 config.fatal_warnings = FALSE;
1398 break;
1399 case OPTION_WARN_MULTIPLE_GP:
1400 config.warn_multiple_gp = TRUE;
1401 break;
1402 case OPTION_WARN_ONCE:
1403 config.warn_once = TRUE;
1404 break;
1405 case OPTION_WARN_SECTION_ALIGN:
1406 config.warn_section_align = TRUE;
1407 break;
1408 case OPTION_WARN_SHARED_TEXTREL:
1409 link_info.warn_shared_textrel = TRUE;
1410 break;
1411 case OPTION_WARN_ALTERNATE_EM:
1412 link_info.warn_alternate_em = TRUE;
1413 break;
1414 case OPTION_WHOLE_ARCHIVE:
1415 input_flags.whole_archive = TRUE;
1416 break;
1417 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1418 input_flags.add_DT_NEEDED_for_dynamic = TRUE;
1419 break;
1420 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1421 input_flags.add_DT_NEEDED_for_dynamic = FALSE;
1422 break;
1423 case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1424 input_flags.add_DT_NEEDED_for_regular = TRUE;
1425 break;
1426 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1427 input_flags.add_DT_NEEDED_for_regular = FALSE;
1428 break;
1429 case OPTION_WRAP:
1430 add_wrap (optarg);
1431 break;
1432 case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1433 add_ignoresym (&link_info, optarg);
1434 break;
1435 case OPTION_DISCARD_NONE:
1436 link_info.discard = discard_none;
1437 break;
1438 case 'X':
1439 link_info.discard = discard_l;
1440 break;
1441 case 'x':
1442 link_info.discard = discard_all;
1443 break;
1444 case 'Y':
1445 if (CONST_STRNEQ (optarg, "P,"))
1446 optarg += 2;
1447 if (default_dirlist != NULL)
1448 free (default_dirlist);
1449 default_dirlist = xstrdup (optarg);
1450 break;
1451 case 'y':
1452 add_ysym (optarg);
1453 break;
1454 case OPTION_SPARE_DYNAMIC_TAGS:
1455 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1456 break;
1457 case OPTION_SPLIT_BY_RELOC:
1458 if (optarg != NULL)
1459 config.split_by_reloc = strtoul (optarg, NULL, 0);
1460 else
1461 config.split_by_reloc = 32768;
1462 break;
1463 case OPTION_SPLIT_BY_FILE:
1464 if (optarg != NULL)
1465 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1466 else
1467 config.split_by_file = 1;
1468 break;
1469 case OPTION_CHECK_SECTIONS:
1470 command_line.check_section_addresses = 1;
1471 break;
1472 case OPTION_NO_CHECK_SECTIONS:
1473 command_line.check_section_addresses = 0;
1474 break;
1475 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1476 command_line.accept_unknown_input_arch = TRUE;
1477 break;
1478 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1479 command_line.accept_unknown_input_arch = FALSE;
1480 break;
1481 case '(':
1482 lang_enter_group ();
1483 ingroup++;
1484 break;
1485 case ')':
1486 if (! ingroup)
1487 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1488
1489 lang_leave_group ();
1490 ingroup--;
1491 break;
1492
1493 case OPTION_INIT:
1494 link_info.init_function = optarg;
1495 break;
1496
1497 case OPTION_FINI:
1498 link_info.fini_function = optarg;
1499 break;
1500
1501 case OPTION_REDUCE_MEMORY_OVERHEADS:
1502 link_info.reduce_memory_overheads = TRUE;
1503 if (config.hash_table_size == 0)
1504 config.hash_table_size = 1021;
1505 break;
1506
1507 case OPTION_HASH_SIZE:
1508 {
1509 bfd_size_type new_size;
1510
1511 new_size = strtoul (optarg, NULL, 0);
1512 if (new_size)
1513 config.hash_table_size = new_size;
1514 else
1515 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1516 }
1517 break;
1518
1519 case OPTION_PUSH_STATE:
1520 input_flags.pushed = xmemdup (&input_flags,
1521 sizeof (input_flags),
1522 sizeof (input_flags));
1523 break;
1524
1525 case OPTION_POP_STATE:
1526 if (input_flags.pushed == NULL)
1527 einfo (_("%P%F: no state pushed before popping\n"));
1528 else
1529 {
1530 struct lang_input_statement_flags *oldp = input_flags.pushed;
1531 memcpy (&input_flags, oldp, sizeof (input_flags));
1532 free (oldp);
1533 }
1534 break;
1535
1536 case OPTION_PRINT_MEMORY_USAGE:
1537 command_line.print_memory_usage = TRUE;
1538 break;
1539
1540 case OPTION_ORPHAN_HANDLING:
1541 if (strcasecmp (optarg, "place") == 0)
1542 config.orphan_handling = orphan_handling_place;
1543 else if (strcasecmp (optarg, "warn") == 0)
1544 config.orphan_handling = orphan_handling_warn;
1545 else if (strcasecmp (optarg, "error") == 0)
1546 config.orphan_handling = orphan_handling_error;
1547 else if (strcasecmp (optarg, "discard") == 0)
1548 config.orphan_handling = orphan_handling_discard;
1549 else
1550 einfo (_("%P%F: invalid argument to option"
1551 " \"--orphan-handling\"\n"));
1552 break;
1553 }
1554 }
1555
1556 if (command_line.soname && command_line.soname[0] == '\0')
1557 {
1558 einfo (_("%P: SONAME must not be empty string; ignored\n"));
1559 command_line.soname = NULL;
1560 }
1561
1562 while (ingroup)
1563 {
1564 lang_leave_group ();
1565 ingroup--;
1566 }
1567
1568 if (default_dirlist != NULL)
1569 {
1570 set_default_dirlist (default_dirlist);
1571 free (default_dirlist);
1572 }
1573
1574 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1575 /* FIXME: Should we allow emulations a chance to set this ? */
1576 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1577
1578 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1579 /* FIXME: Should we allow emulations a chance to set this ? */
1580 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1581
1582 if (bfd_link_relocatable (&link_info)
1583 && command_line.check_section_addresses < 0)
1584 command_line.check_section_addresses = 0;
1585
1586 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1587 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1588 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
1589 for PIC outputs. -Bsymbolic overrides all others and vice versa. */
1590 switch (command_line.symbolic)
1591 {
1592 case symbolic_unset:
1593 break;
1594 case symbolic:
1595 /* -Bsymbolic is for PIC output only. */
1596 if (bfd_link_pic (&link_info))
1597 {
1598 link_info.symbolic = TRUE;
1599 /* Should we free the unused memory? */
1600 link_info.dynamic_list = NULL;
1601 command_line.dynamic_list = dynamic_list_unset;
1602 }
1603 break;
1604 case symbolic_functions:
1605 /* -Bsymbolic-functions is for PIC output only. */
1606 if (bfd_link_pic (&link_info))
1607 command_line.dynamic_list = dynamic_list_data;
1608 break;
1609 }
1610
1611 switch (command_line.dynamic_list)
1612 {
1613 case dynamic_list_unset:
1614 break;
1615 case dynamic_list_data:
1616 link_info.dynamic_data = TRUE;
1617 case dynamic_list:
1618 link_info.dynamic = TRUE;
1619 break;
1620 }
1621
1622 if (!bfd_link_dll (&link_info))
1623 {
1624 if (command_line.filter_shlib)
1625 einfo (_("%P%F: -F may not be used without -shared\n"));
1626 if (command_line.auxiliary_filters)
1627 einfo (_("%P%F: -f may not be used without -shared\n"));
1628 }
1629
1630 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
1631 don't see how else this can be handled, since in this case we
1632 must preserve all externally visible symbols. */
1633 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all)
1634 {
1635 link_info.strip = strip_debugger;
1636 if (link_info.discard == discard_sec_merge)
1637 link_info.discard = discard_all;
1638 }
1639 }
1640
1641 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1642 library search path. */
1643
1644 static void
1645 set_default_dirlist (char *dirlist_ptr)
1646 {
1647 char *p;
1648
1649 while (1)
1650 {
1651 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1652 if (p != NULL)
1653 *p = '\0';
1654 if (*dirlist_ptr != '\0')
1655 ldfile_add_library_path (dirlist_ptr, TRUE);
1656 if (p == NULL)
1657 break;
1658 dirlist_ptr = p + 1;
1659 }
1660 }
1661
1662 static void
1663 set_section_start (char *sect, char *valstr)
1664 {
1665 const char *end;
1666 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1667 if (*end)
1668 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1669 lang_section_start (sect, exp_intop (val), NULL);
1670 }
1671
1672 static void
1673 set_segment_start (const char *section, char *valstr)
1674 {
1675 const char *name;
1676 const char *end;
1677 segment_type *seg;
1678
1679 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1680 if (*end)
1681 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1682 /* If we already have an entry for this segment, update the existing
1683 value. */
1684 name = section + 1;
1685 for (seg = segments; seg; seg = seg->next)
1686 if (strcmp (seg->name, name) == 0)
1687 {
1688 seg->value = val;
1689 lang_section_start (section, exp_intop (val), seg);
1690 return;
1691 }
1692 /* There was no existing value so we must create a new segment
1693 entry. */
1694 seg = (segment_type *) stat_alloc (sizeof (*seg));
1695 seg->name = name;
1696 seg->value = val;
1697 seg->used = FALSE;
1698 /* Add it to the linked list of segments. */
1699 seg->next = segments;
1700 segments = seg;
1701 /* Historically, -Ttext and friends set the base address of a
1702 particular section. For backwards compatibility, we still do
1703 that. If a SEGMENT_START directive is seen, the section address
1704 assignment will be disabled. */
1705 lang_section_start (section, exp_intop (val), seg);
1706 }
1707
1708 static void
1709 elf_shlib_list_options (FILE *file)
1710 {
1711 fprintf (file, _("\
1712 --audit=AUDITLIB Specify a library to use for auditing\n"));
1713 fprintf (file, _("\
1714 -Bgroup Selects group name lookup rules for DSO\n"));
1715 fprintf (file, _("\
1716 --disable-new-dtags Disable new dynamic tags\n"));
1717 fprintf (file, _("\
1718 --enable-new-dtags Enable new dynamic tags\n"));
1719 fprintf (file, _("\
1720 --eh-frame-hdr Create .eh_frame_hdr section\n"));
1721 fprintf (file, _("\
1722 --exclude-libs=LIBS Make all symbols in LIBS hidden\n"));
1723 fprintf (file, _("\
1724 --hash-style=STYLE Set hash style to sysv, gnu or both\n"));
1725 fprintf (file, _("\
1726 -P AUDITLIB, --depaudit=AUDITLIB\n" "\
1727 Specify a library to use for auditing dependencies\n"));
1728 fprintf (file, _("\
1729 -z combreloc Merge dynamic relocs into one section and sort\n"));
1730 fprintf (file, _("\
1731 -z nocombreloc Don't merge dynamic relocs into one section\n"));
1732 fprintf (file, _("\
1733 -z global Make symbols in DSO available for subsequently\n\
1734 loaded objects\n"));
1735 fprintf (file, _("\
1736 -z initfirst Mark DSO to be initialized first at runtime\n"));
1737 fprintf (file, _("\
1738 -z interpose Mark object to interpose all DSOs but executable\n"));
1739 fprintf (file, _("\
1740 -z lazy Mark object lazy runtime binding (default)\n"));
1741 fprintf (file, _("\
1742 -z loadfltr Mark object requiring immediate process\n"));
1743 fprintf (file, _("\
1744 -z nocopyreloc Don't create copy relocs\n"));
1745 fprintf (file, _("\
1746 -z nodefaultlib Mark object not to use default search paths\n"));
1747 fprintf (file, _("\
1748 -z nodelete Mark DSO non-deletable at runtime\n"));
1749 fprintf (file, _("\
1750 -z nodlopen Mark DSO not available to dlopen\n"));
1751 fprintf (file, _("\
1752 -z nodump Mark DSO not available to dldump\n"));
1753 fprintf (file, _("\
1754 -z now Mark object non-lazy runtime binding\n"));
1755 fprintf (file, _("\
1756 -z origin Mark object requiring immediate $ORIGIN\n\
1757 processing at runtime\n"));
1758 #if DEFAULT_LD_Z_RELRO
1759 fprintf (file, _("\
1760 -z relro Create RELRO program header (default)\n"));
1761 fprintf (file, _("\
1762 -z norelro Don't create RELRO program header\n"));
1763 #else
1764 fprintf (file, _("\
1765 -z relro Create RELRO program header\n"));
1766 fprintf (file, _("\
1767 -z norelro Don't create RELRO program header (default)\n"));
1768 #endif
1769 fprintf (file, _("\
1770 -z common Generate common symbols with STT_COMMON type\n"));
1771 fprintf (file, _("\
1772 -z nocommon Generate common symbols with STT_OBJECT type\n"));
1773 fprintf (file, _("\
1774 -z stacksize=SIZE Set size of stack segment\n"));
1775 fprintf (file, _("\
1776 -z text Treat DT_TEXTREL in shared object as error\n"));
1777 fprintf (file, _("\
1778 -z notext Don't treat DT_TEXTREL in shared object as error\n"));
1779 fprintf (file, _("\
1780 -z textoff Don't treat DT_TEXTREL in shared object as error\n"));
1781 }
1782
1783 static void
1784 elf_static_list_options (FILE *file)
1785 {
1786 fprintf (file, _("\
1787 --build-id[=STYLE] Generate build ID note\n"));
1788 fprintf (file, _("\
1789 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\
1790 Compress DWARF debug sections using zlib\n"));
1791 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG
1792 fprintf (file, _("\
1793 Default: zlib-gabi\n"));
1794 #else
1795 fprintf (file, _("\
1796 Default: none\n"));
1797 #endif
1798 fprintf (file, _("\
1799 -z common-page-size=SIZE Set common page size to SIZE\n"));
1800 fprintf (file, _("\
1801 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
1802 fprintf (file, _("\
1803 -z defs Report unresolved symbols in object files.\n"));
1804 fprintf (file, _("\
1805 -z muldefs Allow multiple definitions\n"));
1806 fprintf (file, _("\
1807 -z execstack Mark executable as requiring executable stack\n"));
1808 fprintf (file, _("\
1809 -z noexecstack Mark executable as not requiring executable stack\n"));
1810 }
1811
1812 static void
1813 elf_plt_unwind_list_options (FILE *file)
1814 {
1815 fprintf (file, _("\
1816 --ld-generated-unwind-info Generate exception handling info for PLT\n\
1817 --no-ld-generated-unwind-info\n\
1818 Don't generate exception handling info for PLT\n"));
1819 }
1820
1821 static void
1822 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib,
1823 bfd_boolean plt_unwind)
1824 {
1825 if (!elf)
1826 return;
1827 printf (_("ELF emulations:\n"));
1828 if (plt_unwind)
1829 elf_plt_unwind_list_options (file);
1830 elf_static_list_options (file);
1831 if (shlib)
1832 elf_shlib_list_options (file);
1833 }
1834
1835 \f
1836 /* Print help messages for the options. */
1837
1838 static void
1839 help (void)
1840 {
1841 unsigned i;
1842 const char **targets, **pp;
1843 int len;
1844
1845 printf (_("Usage: %s [options] file...\n"), program_name);
1846
1847 printf (_("Options:\n"));
1848 for (i = 0; i < OPTION_COUNT; i++)
1849 {
1850 if (ld_options[i].doc != NULL)
1851 {
1852 bfd_boolean comma;
1853 unsigned j;
1854
1855 printf (" ");
1856
1857 comma = FALSE;
1858 len = 2;
1859
1860 j = i;
1861 do
1862 {
1863 if (ld_options[j].shortopt != '\0'
1864 && ld_options[j].control != NO_HELP)
1865 {
1866 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1867 len += (comma ? 2 : 0) + 2;
1868 if (ld_options[j].arg != NULL)
1869 {
1870 if (ld_options[j].opt.has_arg != optional_argument)
1871 {
1872 printf (" ");
1873 ++len;
1874 }
1875 printf ("%s", _(ld_options[j].arg));
1876 len += strlen (_(ld_options[j].arg));
1877 }
1878 comma = TRUE;
1879 }
1880 ++j;
1881 }
1882 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1883
1884 j = i;
1885 do
1886 {
1887 if (ld_options[j].opt.name != NULL
1888 && ld_options[j].control != NO_HELP)
1889 {
1890 int two_dashes =
1891 (ld_options[j].control == TWO_DASHES
1892 || ld_options[j].control == EXACTLY_TWO_DASHES);
1893
1894 printf ("%s-%s%s",
1895 comma ? ", " : "",
1896 two_dashes ? "-" : "",
1897 ld_options[j].opt.name);
1898 len += ((comma ? 2 : 0)
1899 + 1
1900 + (two_dashes ? 1 : 0)
1901 + strlen (ld_options[j].opt.name));
1902 if (ld_options[j].arg != NULL)
1903 {
1904 printf (" %s", _(ld_options[j].arg));
1905 len += 1 + strlen (_(ld_options[j].arg));
1906 }
1907 comma = TRUE;
1908 }
1909 ++j;
1910 }
1911 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1912
1913 if (len >= 30)
1914 {
1915 printf ("\n");
1916 len = 0;
1917 }
1918
1919 for (; len < 30; len++)
1920 putchar (' ');
1921
1922 printf ("%s\n", _(ld_options[i].doc));
1923 }
1924 }
1925 printf (_(" @FILE"));
1926 for (len = strlen (" @FILE"); len < 30; len++)
1927 putchar (' ');
1928 printf (_("Read options from FILE\n"));
1929
1930 /* Note: Various tools (such as libtool) depend upon the
1931 format of the listings below - do not change them. */
1932 /* xgettext:c-format */
1933 printf (_("%s: supported targets:"), program_name);
1934 targets = bfd_target_list ();
1935 for (pp = targets; *pp != NULL; pp++)
1936 printf (" %s", *pp);
1937 free (targets);
1938 printf ("\n");
1939
1940 /* xgettext:c-format */
1941 printf (_("%s: supported emulations: "), program_name);
1942 ldemul_list_emulations (stdout);
1943 printf ("\n");
1944
1945 /* xgettext:c-format */
1946 printf (_("%s: emulation specific options:\n"), program_name);
1947 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS,
1948 ELF_PLT_UNWIND_LIST_OPTIONS);
1949 ldemul_list_emulation_options (stdout);
1950 printf ("\n");
1951
1952 if (REPORT_BUGS_TO[0])
1953 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1954 }
DragonFly BSD