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Delete test target descriptions when exiting
[thirdparty/binutils-gdb.git] / ld / lexsup.c
1 /* Parse options for the GNU linker.
2 Copyright (C) 1991-2018 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 { {"force-group-allocation", no_argument, NULL,
116 OPTION_FORCE_GROUP_ALLOCATION},
117 '\0', NULL, N_("Force group members out of groups"), TWO_DASHES },
118 { {"entry", required_argument, NULL, 'e'},
119 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
120 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
121 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
122 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
123 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
124 { {"EB", no_argument, NULL, OPTION_EB},
125 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
126 { {"EL", no_argument, NULL, OPTION_EL},
127 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
128 { {"auxiliary", required_argument, NULL, 'f'},
129 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
130 TWO_DASHES },
131 { {"filter", required_argument, NULL, 'F'},
132 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
133 TWO_DASHES },
134 { {NULL, no_argument, NULL, '\0'},
135 'g', NULL, N_("Ignored"), ONE_DASH },
136 { {"gpsize", required_argument, NULL, 'G'},
137 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
138 TWO_DASHES },
139 { {"soname", required_argument, NULL, OPTION_SONAME},
140 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
141 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
142 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
143 TWO_DASHES },
144 { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER},
145 '\0', NULL, N_("Produce an executable with no program interpreter header"),
146 TWO_DASHES },
147 { {"library", required_argument, NULL, 'l'},
148 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
149 { {"library-path", required_argument, NULL, 'L'},
150 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
151 TWO_DASHES },
152 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
153 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
154 { {NULL, required_argument, NULL, '\0'},
155 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
156 { {"print-map", no_argument, NULL, 'M'},
157 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
158 { {"nmagic", no_argument, NULL, 'n'},
159 'n', NULL, N_("Do not page align data"), TWO_DASHES },
160 { {"omagic", no_argument, NULL, 'N'},
161 'N', NULL, N_("Do not page align data, do not make text readonly"),
162 EXACTLY_TWO_DASHES },
163 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
164 '\0', NULL, N_("Page align data, make text readonly"),
165 EXACTLY_TWO_DASHES },
166 { {"output", required_argument, NULL, 'o'},
167 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
168 { {NULL, required_argument, NULL, '\0'},
169 'O', NULL, N_("Optimize output file"), ONE_DASH },
170 { {"out-implib", required_argument, NULL, OPTION_OUT_IMPLIB},
171 '\0', N_("FILE"), N_("Generate import library"), TWO_DASHES },
172 #ifdef ENABLE_PLUGINS
173 { {"plugin", required_argument, NULL, OPTION_PLUGIN},
174 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
175 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
176 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
177 { {"flto", optional_argument, NULL, OPTION_IGNORE},
178 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
179 ONE_DASH },
180 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
181 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
182 ONE_DASH },
183 #endif /* ENABLE_PLUGINS */
184 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE},
185 '\0', NULL, N_("Ignored for GCC linker option compatibility"),
186 ONE_DASH },
187 { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE},
188 '\0', NULL, N_("Ignored for gold option compatibility"),
189 TWO_DASHES },
190 { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE},
191 '\0', NULL, N_("Ignored for gold option compatibility"),
192 TWO_DASHES },
193 { {"Qy", no_argument, NULL, OPTION_IGNORE},
194 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
195 { {"emit-relocs", no_argument, NULL, 'q'},
196 'q', NULL, "Generate relocations in final output", TWO_DASHES },
197 { {"relocatable", no_argument, NULL, 'r'},
198 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
199 { {NULL, no_argument, NULL, '\0'},
200 'i', NULL, NULL, ONE_DASH },
201 { {"just-symbols", required_argument, NULL, 'R'},
202 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
203 TWO_DASHES },
204 { {"strip-all", no_argument, NULL, 's'},
205 's', NULL, N_("Strip all symbols"), TWO_DASHES },
206 { {"strip-debug", no_argument, NULL, 'S'},
207 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
208 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
209 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
210 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
211 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
212 { {"trace", no_argument, NULL, 't'},
213 't', NULL, N_("Trace file opens"), TWO_DASHES },
214 { {"script", required_argument, NULL, 'T'},
215 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
216 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
217 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
218 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
219 '\0', NULL, NULL, ONE_DASH },
220 { {"undefined", required_argument, NULL, 'u'},
221 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
222 TWO_DASHES },
223 { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL},
224 '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"),
225 TWO_DASHES },
226 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
227 '\0', N_("[=SECTION]"),
228 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
229 { {"Ur", no_argument, NULL, OPTION_UR},
230 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
231 { {"version", no_argument, NULL, OPTION_VERSION},
232 'v', NULL, N_("Print version information"), TWO_DASHES },
233 { {NULL, no_argument, NULL, '\0'},
234 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
235 { {"discard-all", no_argument, NULL, 'x'},
236 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
237 { {"discard-locals", no_argument, NULL, 'X'},
238 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
239 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
240 '\0', NULL, N_("Don't discard any 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"),
245 ONE_DASH },
246 { {"start-group", no_argument, NULL, '('},
247 '(', NULL, N_("Start a group"), TWO_DASHES },
248 { {"end-group", no_argument, NULL, ')'},
249 ')', NULL, N_("End a group"), TWO_DASHES },
250 { {"accept-unknown-input-arch", no_argument, NULL,
251 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
252 '\0', NULL,
253 N_("Accept input files whose architecture cannot be determined"),
254 TWO_DASHES },
255 { {"no-accept-unknown-input-arch", no_argument, NULL,
256 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
257 '\0', NULL, N_("Reject input files whose architecture is unknown"),
258 TWO_DASHES },
259
260 /* The next two options are deprecated because of their similarity to
261 --as-needed and --no-as-needed. They have been replaced by
262 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */
263 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
264 '\0', NULL, NULL, NO_HELP },
265 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
266 '\0', NULL, NULL, NO_HELP },
267
268 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
269 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
270 TWO_DASHES },
271 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
272 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
273 " the command line"),
274 TWO_DASHES },
275 { {"assert", required_argument, NULL, OPTION_ASSERT},
276 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
277 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
278 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
279 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
280 '\0', NULL, NULL, ONE_DASH },
281 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
282 '\0', NULL, NULL, ONE_DASH },
283 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
284 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
285 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
286 '\0', NULL, NULL, ONE_DASH },
287 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
288 '\0', NULL, NULL, ONE_DASH },
289 { {"static", no_argument, NULL, OPTION_NON_SHARED},
290 '\0', NULL, NULL, ONE_DASH },
291 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
292 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
293 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
294 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
295 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
296 '\0', NULL, N_("Check section addresses for overlaps (default)"),
297 TWO_DASHES },
298 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
299 '\0', NULL, N_("Do not check section addresses for overlaps"),
300 TWO_DASHES },
301 { {"copy-dt-needed-entries", no_argument, NULL,
302 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
303 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
304 TWO_DASHES },
305 { {"no-copy-dt-needed-entries", no_argument, NULL,
306 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
307 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
308 TWO_DASHES },
309
310 { {"cref", no_argument, NULL, OPTION_CREF},
311 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
312 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
313 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
314 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
315 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
316 TWO_DASHES },
317 { {"disable-multiple-abs-defs", no_argument, NULL,
318 OPTION_DISABLE_MULTIPLE_DEFS_ABS},
319 '\0', NULL, N_("Do not allow multiple definitions with symbols included\n"
320 " in filename invoked by -R or --just-symbols"),
321 TWO_DASHES},
322 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
323 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
324 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
325 '\0', NULL, N_("Treat warnings as errors"),
326 TWO_DASHES },
327 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
328 '\0', NULL, N_("Do not treat warnings as errors (default)"),
329 TWO_DASHES },
330 { {"fini", required_argument, NULL, OPTION_FINI},
331 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
332 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
333 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
334 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
335 '\0', NULL, N_("Remove unused sections (on some targets)"),
336 TWO_DASHES },
337 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
338 '\0', NULL, N_("Don't remove unused sections (default)"),
339 TWO_DASHES },
340 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
341 '\0', NULL, N_("List removed unused sections on stderr"),
342 TWO_DASHES },
343 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
344 '\0', NULL, N_("Do not list removed unused sections"),
345 TWO_DASHES },
346 { {"gc-keep-exported", no_argument, NULL, OPTION_GC_KEEP_EXPORTED},
347 '\0', NULL, N_("Keep exported symbols when removing unused sections"),
348 TWO_DASHES },
349 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
350 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
351 TWO_DASHES },
352 { {"help", no_argument, NULL, OPTION_HELP},
353 '\0', NULL, N_("Print option help"), TWO_DASHES },
354 { {"init", required_argument, NULL, OPTION_INIT},
355 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
356 { {"Map", required_argument, NULL, OPTION_MAP},
357 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
358 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
359 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
360 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
361 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
362 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
363 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
364 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
365 '\0', NULL, N_("Do not allow unresolved references in object files"),
366 TWO_DASHES },
367 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
368 '\0', NULL, N_("Allow unresolved references in shared libraries"),
369 TWO_DASHES },
370 { {"no-allow-shlib-undefined", no_argument, NULL,
371 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
372 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
373 TWO_DASHES },
374 { {"allow-multiple-definition", no_argument, NULL,
375 OPTION_ALLOW_MULTIPLE_DEFINITION},
376 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
377 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
378 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
379 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
380 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
381 { {"default-imported-symver", no_argument, NULL,
382 OPTION_DEFAULT_IMPORTED_SYMVER},
383 '\0', NULL, N_("Create default symbol version for imported symbols"),
384 TWO_DASHES },
385 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
386 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
387 { {"no-warn-search-mismatch", no_argument, NULL,
388 OPTION_NO_WARN_SEARCH_MISMATCH},
389 '\0', NULL, N_("Don't warn on finding an incompatible library"),
390 TWO_DASHES},
391 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
392 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
393 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
394 '\0', NULL, N_("Create an output file even if errors occur"),
395 TWO_DASHES },
396 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
397 '\0', NULL, NULL, NO_HELP },
398 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
399 '\0', NULL, N_("Only use library directories specified on\n"
400 " the command line"),
401 ONE_DASH },
402 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
403 '\0', N_("TARGET"), N_("Specify target of output file"),
404 EXACTLY_TWO_DASHES },
405 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
406 '\0', NULL, N_("Print default output format"), TWO_DASHES },
407 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT},
408 '\0', NULL, N_("Print current sysroot"), TWO_DASHES },
409 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
410 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
411 { {"reduce-memory-overheads", no_argument, NULL,
412 OPTION_REDUCE_MEMORY_OVERHEADS},
413 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
414 TWO_DASHES },
415 { {"relax", no_argument, NULL, OPTION_RELAX},
416 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
417 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
418 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
419 { {"retain-symbols-file", required_argument, NULL,
420 OPTION_RETAIN_SYMBOLS_FILE},
421 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
422 { {"rpath", required_argument, NULL, OPTION_RPATH},
423 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
424 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
425 '\0', N_("PATH"), N_("Set link time shared library search path"),
426 ONE_DASH },
427 { {"shared", no_argument, NULL, OPTION_SHARED},
428 '\0', NULL, N_("Create a shared library"), ONE_DASH },
429 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
430 '\0', NULL, NULL, ONE_DASH },
431 { {"pie", no_argument, NULL, OPTION_PIE},
432 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
433 { {"pic-executable", no_argument, NULL, OPTION_PIE},
434 '\0', NULL, NULL, TWO_DASHES },
435 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
436 '\0', N_("[=ascending|descending]"),
437 N_("Sort common symbols by alignment [in specified order]"),
438 TWO_DASHES },
439 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
440 '\0', NULL, NULL, NO_HELP },
441 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
442 '\0', N_("name|alignment"),
443 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
444 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
445 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
446 TWO_DASHES },
447 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
448 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
449 TWO_DASHES },
450 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
451 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
452 TWO_DASHES },
453 { {"stats", no_argument, NULL, OPTION_STATS},
454 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
455 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
456 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
457 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
458 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
459 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
460 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
461 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
462 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
463 TWO_DASHES },
464 { {"Tbss", required_argument, NULL, OPTION_TBSS},
465 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
466 { {"Tdata", required_argument, NULL, OPTION_TDATA},
467 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
468 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
469 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
470 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
471 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
472 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT},
473 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH },
474 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT},
475 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH },
476 { {"unresolved-symbols=<method>", required_argument, NULL,
477 OPTION_UNRESOLVED_SYMBOLS},
478 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
479 " ignore-all, report-all, ignore-in-object-files,\n"
480 " ignore-in-shared-libs"),
481 TWO_DASHES },
482 { {"verbose", optional_argument, NULL, OPTION_VERBOSE},
483 '\0', N_("[=NUMBER]"),
484 N_("Output lots of information during link"), TWO_DASHES },
485 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
486 '\0', NULL, NULL, NO_HELP },
487 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
488 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
489 { {"version-exports-section", required_argument, NULL,
490 OPTION_VERSION_EXPORTS_SECTION },
491 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
492 " SYMBOL as the version."),
493 TWO_DASHES },
494 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
495 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
496 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
497 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
498 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
499 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
500 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
501 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
502 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
503 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
504 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
505 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
506 TWO_DASHES },
507 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
508 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
509 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
510 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
511 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
512 '\0', NULL, N_("Warn if start of section changes due to alignment"),
513 TWO_DASHES },
514 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
515 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
516 TWO_DASHES },
517 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
518 '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
519 TWO_DASHES },
520 { {"warn-unresolved-symbols", no_argument, NULL,
521 OPTION_WARN_UNRESOLVED_SYMBOLS},
522 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
523 { {"error-unresolved-symbols", no_argument, NULL,
524 OPTION_ERROR_UNRESOLVED_SYMBOLS},
525 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
526 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
527 '\0', NULL, N_("Include all objects from following archives"),
528 TWO_DASHES },
529 { {"wrap", required_argument, NULL, OPTION_WRAP},
530 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
531 { {"ignore-unresolved-symbol", required_argument, NULL,
532 OPTION_IGNORE_UNRESOLVED_SYMBOL},
533 '\0', N_("SYMBOL"),
534 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
535 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE},
536 '\0', NULL, N_("Push state of flags governing input file handling"),
537 TWO_DASHES },
538 { {"pop-state", no_argument, NULL, OPTION_POP_STATE},
539 '\0', NULL, N_("Pop state of flags governing input file handling"),
540 TWO_DASHES },
541 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE},
542 '\0', NULL, N_("Report target memory usage"), TWO_DASHES },
543 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING},
544 '\0', N_("=MODE"), N_("Control how orphan sections are handled."),
545 TWO_DASHES },
546 };
547
548 #define OPTION_COUNT ARRAY_SIZE (ld_options)
549
550 void
551 parse_args (unsigned argc, char **argv)
552 {
553 unsigned i;
554 int is, il, irl;
555 int ingroup = 0;
556 char *default_dirlist = NULL;
557 char *shortopts;
558 struct option *longopts;
559 struct option *really_longopts;
560 int last_optind;
561 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
562
563 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
564 longopts = (struct option *)
565 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
566 really_longopts = (struct option *)
567 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
568
569 /* Starting the short option string with '-' is for programs that
570 expect options and other ARGV-elements in any order and that care about
571 the ordering of the two. We describe each non-option ARGV-element
572 as if it were the argument of an option with character code 1. */
573 shortopts[0] = '-';
574 is = 1;
575 il = 0;
576 irl = 0;
577 for (i = 0; i < OPTION_COUNT; i++)
578 {
579 if (ld_options[i].shortopt != '\0')
580 {
581 shortopts[is] = ld_options[i].shortopt;
582 ++is;
583 if (ld_options[i].opt.has_arg == required_argument
584 || ld_options[i].opt.has_arg == optional_argument)
585 {
586 shortopts[is] = ':';
587 ++is;
588 if (ld_options[i].opt.has_arg == optional_argument)
589 {
590 shortopts[is] = ':';
591 ++is;
592 }
593 }
594 }
595 if (ld_options[i].opt.name != NULL)
596 {
597 if (ld_options[i].control == EXACTLY_TWO_DASHES)
598 {
599 really_longopts[irl] = ld_options[i].opt;
600 ++irl;
601 }
602 else
603 {
604 longopts[il] = ld_options[i].opt;
605 ++il;
606 }
607 }
608 }
609 shortopts[is] = '\0';
610 longopts[il].name = NULL;
611 really_longopts[irl].name = NULL;
612
613 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
614
615 /* The -G option is ambiguous on different platforms. Sometimes it
616 specifies the largest data size to put into the small data
617 section. Sometimes it is equivalent to --shared. Unfortunately,
618 the first form takes an argument, while the second does not.
619
620 We need to permit the --shared form because on some platforms,
621 such as Solaris, gcc -shared will pass -G to the linker.
622
623 To permit either usage, we look through the argument list. If we
624 find -G not followed by a number, we change it into --shared.
625 This will work for most normal cases. */
626 for (i = 1; i < argc; i++)
627 if (strcmp (argv[i], "-G") == 0
628 && (i + 1 >= argc
629 || ! ISDIGIT (argv[i + 1][0])))
630 argv[i] = (char *) "--shared";
631
632 /* Because we permit long options to start with a single dash, and
633 we have a --library option, and the -l option is conventionally
634 used with an immediately following argument, we can have bad
635 results if somebody tries to use -l with a library whose name
636 happens to start with "ibrary", as in -li. We avoid problems by
637 simply turning -l into --library. This means that users will
638 have to use two dashes in order to use --library, which is OK
639 since that's how it is documented.
640
641 FIXME: It's possible that this problem can arise for other short
642 options as well, although the user does always have the recourse
643 of adding a space between the option and the argument. */
644 for (i = 1; i < argc; i++)
645 {
646 if (argv[i][0] == '-'
647 && argv[i][1] == 'l'
648 && argv[i][2] != '\0')
649 {
650 char *n;
651
652 n = (char *) xmalloc (strlen (argv[i]) + 20);
653 sprintf (n, "--library=%s", argv[i] + 2);
654 argv[i] = n;
655 }
656 }
657
658 last_optind = -1;
659 while (1)
660 {
661 int longind;
662 int optc;
663 static unsigned int defsym_count;
664
665 /* Using last_optind lets us avoid calling ldemul_parse_args
666 multiple times on a single option, which would lead to
667 confusion in the internal static variables maintained by
668 getopt. This could otherwise happen for an argument like
669 -nx, in which the -n is parsed as a single option, and we
670 loop around to pick up the -x. */
671 if (optind != last_optind)
672 if (ldemul_parse_args (argc, argv))
673 continue;
674
675 /* getopt_long_only is like getopt_long, but '-' as well as '--'
676 can indicate a long option. */
677 opterr = 0;
678 last_optind = optind;
679 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
680 if (optc == '?')
681 {
682 optind = last_optind;
683 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
684 }
685
686 if (ldemul_handle_option (optc))
687 continue;
688
689 if (optc == -1)
690 break;
691
692 switch (optc)
693 {
694 case '?':
695 {
696 /* If the last word on the command line is an option that
697 requires an argument, getopt will refuse to recognise it.
698 Try to catch such options here and issue a more helpful
699 error message than just "unrecognized option". */
700 int opt;
701
702 for (opt = ARRAY_SIZE (ld_options); opt--;)
703 if (ld_options[opt].opt.has_arg == required_argument
704 /* FIXME: There are a few short options that do not
705 have long equivalents, but which require arguments.
706 We should handle them too. */
707 && ld_options[opt].opt.name != NULL
708 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0)
709 {
710 einfo (_("%P: %s: missing argument\n"), argv[last_optind]);
711 break;
712 }
713
714 if (opt == -1)
715 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
716 }
717 /* Fall through. */
718
719 default:
720 einfo (_("%F%P: use the --help option for usage information\n"));
721 break;
722
723 case 1: /* File name. */
724 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
725 break;
726
727 case OPTION_IGNORE:
728 break;
729 case 'a':
730 /* For HP/UX compatibility. Actually -a shared should mean
731 ``use only shared libraries'' but, then, we don't
732 currently support shared libraries on HP/UX anyhow. */
733 if (strcmp (optarg, "archive") == 0)
734 input_flags.dynamic = FALSE;
735 else if (strcmp (optarg, "shared") == 0
736 || strcmp (optarg, "default") == 0)
737 input_flags.dynamic = TRUE;
738 else
739 einfo (_("%F%P: unrecognized -a option `%s'\n"), optarg);
740 break;
741 case OPTION_ASSERT:
742 /* FIXME: We just ignore these, but we should handle them. */
743 if (strcmp (optarg, "definitions") == 0)
744 ;
745 else if (strcmp (optarg, "nodefinitions") == 0)
746 ;
747 else if (strcmp (optarg, "nosymbolic") == 0)
748 ;
749 else if (strcmp (optarg, "pure-text") == 0)
750 ;
751 else
752 einfo (_("%F%P: unrecognized -assert option `%s'\n"), optarg);
753 break;
754 case 'A':
755 ldfile_add_arch (optarg);
756 break;
757 case 'b':
758 lang_add_target (optarg);
759 break;
760 case 'c':
761 ldfile_open_command_file (optarg);
762 parser_input = input_mri_script;
763 yyparse ();
764 break;
765 case OPTION_CALL_SHARED:
766 input_flags.dynamic = TRUE;
767 break;
768 case OPTION_NON_SHARED:
769 input_flags.dynamic = FALSE;
770 break;
771 case OPTION_CREF:
772 command_line.cref = TRUE;
773 link_info.notice_all = TRUE;
774 break;
775 case 'd':
776 command_line.force_common_definition = TRUE;
777 break;
778 case OPTION_FORCE_GROUP_ALLOCATION:
779 command_line.force_group_allocation = TRUE;
780 break;
781 case OPTION_DEFSYM:
782 lex_string = optarg;
783 lex_redirect (optarg, "--defsym", ++defsym_count);
784 parser_input = input_defsym;
785 yyparse ();
786 lex_string = NULL;
787 break;
788 case OPTION_DEMANGLE:
789 demangling = TRUE;
790 if (optarg != NULL)
791 {
792 enum demangling_styles style;
793
794 style = cplus_demangle_name_to_style (optarg);
795 if (style == unknown_demangling)
796 einfo (_("%F%P: unknown demangling style `%s'\n"),
797 optarg);
798
799 cplus_demangle_set_style (style);
800 }
801 break;
802 case 'I': /* Used on Solaris. */
803 case OPTION_DYNAMIC_LINKER:
804 command_line.interpreter = optarg;
805 link_info.nointerp = 0;
806 break;
807 case OPTION_NO_DYNAMIC_LINKER:
808 link_info.nointerp = 1;
809 break;
810 case OPTION_SYSROOT:
811 /* Already handled in ldmain.c. */
812 break;
813 case OPTION_EB:
814 command_line.endian = ENDIAN_BIG;
815 break;
816 case OPTION_EL:
817 command_line.endian = ENDIAN_LITTLE;
818 break;
819 case OPTION_EMBEDDED_RELOCS:
820 command_line.embedded_relocs = TRUE;
821 break;
822 case OPTION_EXPORT_DYNAMIC:
823 case 'E': /* HP/UX compatibility. */
824 link_info.export_dynamic = TRUE;
825 break;
826 case OPTION_NO_EXPORT_DYNAMIC:
827 link_info.export_dynamic = FALSE;
828 break;
829 case 'e':
830 lang_add_entry (optarg, TRUE);
831 break;
832 case 'f':
833 if (command_line.auxiliary_filters == NULL)
834 {
835 command_line.auxiliary_filters = (char **)
836 xmalloc (2 * sizeof (char *));
837 command_line.auxiliary_filters[0] = optarg;
838 command_line.auxiliary_filters[1] = NULL;
839 }
840 else
841 {
842 int c;
843 char **p;
844
845 c = 0;
846 for (p = command_line.auxiliary_filters; *p != NULL; p++)
847 ++c;
848 command_line.auxiliary_filters = (char **)
849 xrealloc (command_line.auxiliary_filters,
850 (c + 2) * sizeof (char *));
851 command_line.auxiliary_filters[c] = optarg;
852 command_line.auxiliary_filters[c + 1] = NULL;
853 }
854 break;
855 case 'F':
856 command_line.filter_shlib = optarg;
857 break;
858 case OPTION_FORCE_EXE_SUFFIX:
859 command_line.force_exe_suffix = TRUE;
860 break;
861 case 'G':
862 {
863 char *end;
864 g_switch_value = strtoul (optarg, &end, 0);
865 if (*end)
866 einfo (_("%F%P: invalid number `%s'\n"), optarg);
867 }
868 break;
869 case 'g':
870 /* Ignore. */
871 break;
872 case OPTION_GC_SECTIONS:
873 link_info.gc_sections = TRUE;
874 break;
875 case OPTION_PRINT_GC_SECTIONS:
876 link_info.print_gc_sections = TRUE;
877 break;
878 case OPTION_GC_KEEP_EXPORTED:
879 link_info.gc_keep_exported = TRUE;
880 break;
881 case OPTION_HELP:
882 help ();
883 xexit (0);
884 break;
885 case 'L':
886 ldfile_add_library_path (optarg, TRUE);
887 break;
888 case 'l':
889 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
890 break;
891 case 'M':
892 config.map_filename = "-";
893 break;
894 case 'm':
895 /* Ignore. Was handled in a pre-parse. */
896 break;
897 case OPTION_MAP:
898 config.map_filename = optarg;
899 break;
900 case 'N':
901 config.text_read_only = FALSE;
902 config.magic_demand_paged = FALSE;
903 input_flags.dynamic = FALSE;
904 break;
905 case OPTION_NO_OMAGIC:
906 config.text_read_only = TRUE;
907 config.magic_demand_paged = TRUE;
908 /* NB/ Does not set input_flags.dynamic to TRUE.
909 Use --call-shared or -Bdynamic for this. */
910 break;
911 case 'n':
912 config.magic_demand_paged = FALSE;
913 input_flags.dynamic = FALSE;
914 break;
915 case OPTION_NO_DEFINE_COMMON:
916 link_info.inhibit_common_definition = TRUE;
917 break;
918 case OPTION_NO_DEMANGLE:
919 demangling = FALSE;
920 break;
921 case OPTION_NO_GC_SECTIONS:
922 link_info.gc_sections = FALSE;
923 break;
924 case OPTION_NO_PRINT_GC_SECTIONS:
925 link_info.print_gc_sections = FALSE;
926 break;
927 case OPTION_NO_KEEP_MEMORY:
928 link_info.keep_memory = FALSE;
929 break;
930 case OPTION_NO_UNDEFINED:
931 link_info.unresolved_syms_in_objects
932 = how_to_report_unresolved_symbols;
933 break;
934 case OPTION_ALLOW_SHLIB_UNDEFINED:
935 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
936 break;
937 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
938 link_info.unresolved_syms_in_shared_libs
939 = how_to_report_unresolved_symbols;
940 break;
941 case OPTION_UNRESOLVED_SYMBOLS:
942 if (strcmp (optarg, "ignore-all") == 0)
943 {
944 link_info.unresolved_syms_in_objects = RM_IGNORE;
945 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
946 }
947 else if (strcmp (optarg, "report-all") == 0)
948 {
949 link_info.unresolved_syms_in_objects
950 = how_to_report_unresolved_symbols;
951 link_info.unresolved_syms_in_shared_libs
952 = how_to_report_unresolved_symbols;
953 }
954 else if (strcmp (optarg, "ignore-in-object-files") == 0)
955 {
956 link_info.unresolved_syms_in_objects = RM_IGNORE;
957 link_info.unresolved_syms_in_shared_libs
958 = how_to_report_unresolved_symbols;
959 }
960 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
961 {
962 link_info.unresolved_syms_in_objects
963 = how_to_report_unresolved_symbols;
964 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
965 }
966 else
967 einfo (_("%F%P: bad --unresolved-symbols option: %s\n"), optarg);
968 break;
969 case OPTION_WARN_UNRESOLVED_SYMBOLS:
970 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
971 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
972 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
973 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
974 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
975 break;
976
977 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
978 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
979 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
980 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
981 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
982 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
983 break;
984 case OPTION_ALLOW_MULTIPLE_DEFINITION:
985 link_info.allow_multiple_definition = TRUE;
986 break;
987 case OPTION_NO_UNDEFINED_VERSION:
988 link_info.allow_undefined_version = FALSE;
989 break;
990 case OPTION_DEFAULT_SYMVER:
991 link_info.create_default_symver = TRUE;
992 break;
993 case OPTION_DEFAULT_IMPORTED_SYMVER:
994 link_info.default_imported_symver = TRUE;
995 break;
996 case OPTION_NO_WARN_MISMATCH:
997 command_line.warn_mismatch = FALSE;
998 break;
999 case OPTION_NO_WARN_SEARCH_MISMATCH:
1000 command_line.warn_search_mismatch = FALSE;
1001 break;
1002 case OPTION_NOINHIBIT_EXEC:
1003 force_make_executable = TRUE;
1004 break;
1005 case OPTION_NOSTDLIB:
1006 config.only_cmd_line_lib_dirs = TRUE;
1007 break;
1008 case OPTION_NO_WHOLE_ARCHIVE:
1009 input_flags.whole_archive = FALSE;
1010 break;
1011 case 'O':
1012 /* FIXME "-O<non-digits> <value>" used to set the address of
1013 section <non-digits>. Was this for compatibility with
1014 something, or can we create a new option to do that
1015 (with a syntax similar to -defsym)?
1016 getopt can't handle two args to an option without kludges. */
1017
1018 /* Enable optimizations of output files. */
1019 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1020 break;
1021 case 'o':
1022 lang_add_output (optarg, 0);
1023 break;
1024 case OPTION_OFORMAT:
1025 lang_add_output_format (optarg, NULL, NULL, 0);
1026 break;
1027 case OPTION_OUT_IMPLIB:
1028 command_line.out_implib_filename = xstrdup (optarg);
1029 break;
1030 case OPTION_PRINT_SYSROOT:
1031 if (*ld_sysroot)
1032 puts (ld_sysroot);
1033 xexit (0);
1034 break;
1035 case OPTION_PRINT_OUTPUT_FORMAT:
1036 command_line.print_output_format = TRUE;
1037 break;
1038 #ifdef ENABLE_PLUGINS
1039 case OPTION_PLUGIN:
1040 plugin_opt_plugin (optarg);
1041 break;
1042 case OPTION_PLUGIN_OPT:
1043 if (plugin_opt_plugin_arg (optarg))
1044 einfo (_("%F%P: bad -plugin-opt option\n"));
1045 break;
1046 #endif /* ENABLE_PLUGINS */
1047 case 'q':
1048 link_info.emitrelocations = TRUE;
1049 break;
1050 case 'i':
1051 case 'r':
1052 if (optind == last_optind)
1053 /* This can happen if the user put "-rpath,a" on the command
1054 line. (Or something similar. The comma is important).
1055 Getopt becomes confused and thinks that this is a -r option
1056 but it cannot parse the text after the -r so it refuses to
1057 increment the optind counter. Detect this case and issue
1058 an error message here. We cannot just make this a warning,
1059 increment optind, and continue because getopt is too confused
1060 and will seg-fault the next time around. */
1061 einfo(_("%F%P: unrecognised option: %s\n"), argv[optind]);
1062
1063 if (bfd_link_pic (&link_info))
1064 einfo (_("%F%P: -r and %s may not be used together\n"),
1065 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1066
1067 link_info.type = type_relocatable;
1068 config.build_constructors = FALSE;
1069 config.magic_demand_paged = FALSE;
1070 config.text_read_only = FALSE;
1071 input_flags.dynamic = FALSE;
1072 break;
1073 case 'R':
1074 /* The GNU linker traditionally uses -R to mean to include
1075 only the symbols from a file. The Solaris linker uses -R
1076 to set the path used by the runtime linker to find
1077 libraries. This is the GNU linker -rpath argument. We
1078 try to support both simultaneously by checking the file
1079 named. If it is a directory, rather than a regular file,
1080 we assume -rpath was meant. */
1081 {
1082 struct stat s;
1083
1084 if (stat (optarg, &s) >= 0
1085 && ! S_ISDIR (s.st_mode))
1086 {
1087 lang_add_input_file (optarg,
1088 lang_input_file_is_symbols_only_enum,
1089 NULL);
1090 break;
1091 }
1092 }
1093 /* Fall through. */
1094 case OPTION_RPATH:
1095 if (command_line.rpath == NULL)
1096 command_line.rpath = xstrdup (optarg);
1097 else
1098 {
1099 size_t rpath_len = strlen (command_line.rpath);
1100 size_t optarg_len = strlen (optarg);
1101 char *buf;
1102 char *cp = command_line.rpath;
1103
1104 /* First see whether OPTARG is already in the path. */
1105 do
1106 {
1107 if (strncmp (optarg, cp, optarg_len) == 0
1108 && (cp[optarg_len] == 0
1109 || cp[optarg_len] == config.rpath_separator))
1110 /* We found it. */
1111 break;
1112
1113 /* Not yet found. */
1114 cp = strchr (cp, config.rpath_separator);
1115 if (cp != NULL)
1116 ++cp;
1117 }
1118 while (cp != NULL);
1119
1120 if (cp == NULL)
1121 {
1122 buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1123 sprintf (buf, "%s%c%s", command_line.rpath,
1124 config.rpath_separator, optarg);
1125 free (command_line.rpath);
1126 command_line.rpath = buf;
1127 }
1128 }
1129 break;
1130 case OPTION_RPATH_LINK:
1131 if (command_line.rpath_link == NULL)
1132 command_line.rpath_link = xstrdup (optarg);
1133 else
1134 {
1135 char *buf;
1136
1137 buf = (char *) xmalloc (strlen (command_line.rpath_link)
1138 + strlen (optarg)
1139 + 2);
1140 sprintf (buf, "%s%c%s", command_line.rpath_link,
1141 config.rpath_separator, optarg);
1142 free (command_line.rpath_link);
1143 command_line.rpath_link = buf;
1144 }
1145 break;
1146 case OPTION_NO_RELAX:
1147 DISABLE_RELAXATION;
1148 break;
1149 case OPTION_RELAX:
1150 ENABLE_RELAXATION;
1151 break;
1152 case OPTION_RETAIN_SYMBOLS_FILE:
1153 add_keepsyms_file (optarg);
1154 break;
1155 case 'S':
1156 link_info.strip = strip_debugger;
1157 break;
1158 case 's':
1159 link_info.strip = strip_all;
1160 break;
1161 case OPTION_STRIP_DISCARDED:
1162 link_info.strip_discarded = TRUE;
1163 break;
1164 case OPTION_NO_STRIP_DISCARDED:
1165 link_info.strip_discarded = FALSE;
1166 break;
1167 case OPTION_DISABLE_MULTIPLE_DEFS_ABS:
1168 link_info.prohibit_multiple_definition_absolute = TRUE;
1169 break;
1170 case OPTION_SHARED:
1171 if (config.has_shared)
1172 {
1173 if (bfd_link_relocatable (&link_info))
1174 einfo (_("%F%P: -r and %s may not be used together\n"),
1175 "-shared");
1176
1177 link_info.type = type_dll;
1178 /* When creating a shared library, the default
1179 behaviour is to ignore any unresolved references. */
1180 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1181 link_info.unresolved_syms_in_objects = RM_IGNORE;
1182 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1183 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1184 }
1185 else
1186 einfo (_("%F%P: -shared not supported\n"));
1187 break;
1188 case OPTION_PIE:
1189 if (config.has_shared)
1190 {
1191 if (bfd_link_relocatable (&link_info))
1192 einfo (_("%F%P: -r and %s may not be used together\n"), "-pie");
1193
1194 link_info.type = type_pie;
1195 }
1196 else
1197 einfo (_("%F%P: -pie not supported\n"));
1198 break;
1199 case 'h': /* Used on Solaris. */
1200 case OPTION_SONAME:
1201 if (optarg[0] == '\0' && command_line.soname
1202 && command_line.soname[0])
1203 einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
1204 else
1205 command_line.soname = optarg;
1206 break;
1207 case OPTION_SORT_COMMON:
1208 if (optarg == NULL
1209 || strcmp (optarg, N_("descending")) == 0)
1210 config.sort_common = sort_descending;
1211 else if (strcmp (optarg, N_("ascending")) == 0)
1212 config.sort_common = sort_ascending;
1213 else
1214 einfo (_("%F%P: invalid common section sorting option: %s\n"),
1215 optarg);
1216 break;
1217 case OPTION_SORT_SECTION:
1218 if (strcmp (optarg, N_("name")) == 0)
1219 sort_section = by_name;
1220 else if (strcmp (optarg, N_("alignment")) == 0)
1221 sort_section = by_alignment;
1222 else
1223 einfo (_("%F%P: invalid section sorting option: %s\n"),
1224 optarg);
1225 break;
1226 case OPTION_STATS:
1227 config.stats = TRUE;
1228 break;
1229 case OPTION_SYMBOLIC:
1230 command_line.symbolic = symbolic;
1231 break;
1232 case OPTION_SYMBOLIC_FUNCTIONS:
1233 command_line.symbolic = symbolic_functions;
1234 break;
1235 case 't':
1236 trace_files = TRUE;
1237 break;
1238 case 'T':
1239 previous_script_handle = saved_script_handle;
1240 ldfile_open_command_file (optarg);
1241 parser_input = input_script;
1242 yyparse ();
1243 previous_script_handle = NULL;
1244 break;
1245 case OPTION_DEFAULT_SCRIPT:
1246 command_line.default_script = optarg;
1247 break;
1248 case OPTION_SECTION_START:
1249 {
1250 char *optarg2;
1251 char *sec_name;
1252 int len;
1253
1254 /* Check for <something>=<somthing>... */
1255 optarg2 = strchr (optarg, '=');
1256 if (optarg2 == NULL)
1257 einfo (_("%F%P: invalid argument to option"
1258 " \"--section-start\"\n"));
1259
1260 optarg2++;
1261
1262 /* So far so good. Are all the args present? */
1263 if ((*optarg == '\0') || (*optarg2 == '\0'))
1264 einfo (_("%F%P: missing argument(s) to option"
1265 " \"--section-start\"\n"));
1266
1267 /* We must copy the section name as set_section_start
1268 doesn't do it for us. */
1269 len = optarg2 - optarg;
1270 sec_name = (char *) xmalloc (len);
1271 memcpy (sec_name, optarg, len - 1);
1272 sec_name[len - 1] = 0;
1273
1274 /* Then set it... */
1275 set_section_start (sec_name, optarg2);
1276 }
1277 break;
1278 case OPTION_TARGET_HELP:
1279 /* Mention any target specific options. */
1280 ldemul_list_emulation_options (stdout);
1281 exit (0);
1282 case OPTION_TBSS:
1283 set_segment_start (".bss", optarg);
1284 break;
1285 case OPTION_TDATA:
1286 set_segment_start (".data", optarg);
1287 break;
1288 case OPTION_TTEXT:
1289 set_segment_start (".text", optarg);
1290 break;
1291 case OPTION_TTEXT_SEGMENT:
1292 set_segment_start (".text-segment", optarg);
1293 break;
1294 case OPTION_TRODATA_SEGMENT:
1295 set_segment_start (".rodata-segment", optarg);
1296 break;
1297 case OPTION_TLDATA_SEGMENT:
1298 set_segment_start (".ldata-segment", optarg);
1299 break;
1300 case OPTION_TRADITIONAL_FORMAT:
1301 link_info.traditional_format = TRUE;
1302 break;
1303 case OPTION_TASK_LINK:
1304 link_info.task_link = TRUE;
1305 /* Fall through. */
1306 case OPTION_UR:
1307 if (bfd_link_pic (&link_info))
1308 einfo (_("%F%P: -r and %s may not be used together\n"),
1309 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1310
1311 link_info.type = type_relocatable;
1312 config.build_constructors = TRUE;
1313 config.magic_demand_paged = FALSE;
1314 config.text_read_only = FALSE;
1315 input_flags.dynamic = FALSE;
1316 break;
1317 case 'u':
1318 ldlang_add_undef (optarg, TRUE);
1319 break;
1320 case OPTION_REQUIRE_DEFINED_SYMBOL:
1321 ldlang_add_require_defined (optarg);
1322 break;
1323 case OPTION_UNIQUE:
1324 if (optarg != NULL)
1325 lang_add_unique (optarg);
1326 else
1327 config.unique_orphan_sections = TRUE;
1328 break;
1329 case OPTION_VERBOSE:
1330 ldversion (1);
1331 version_printed = TRUE;
1332 verbose = TRUE;
1333 overflow_cutoff_limit = -2;
1334 if (optarg != NULL)
1335 {
1336 char *end;
1337 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1338 if (*end)
1339 einfo (_("%F%P: invalid number `%s'\n"), optarg);
1340 #ifdef ENABLE_PLUGINS
1341 report_plugin_symbols = level > 1;
1342 #endif /* ENABLE_PLUGINS */
1343 }
1344 break;
1345 case 'v':
1346 ldversion (0);
1347 version_printed = TRUE;
1348 break;
1349 case 'V':
1350 ldversion (1);
1351 version_printed = TRUE;
1352 break;
1353 case OPTION_VERSION:
1354 ldversion (2);
1355 xexit (0);
1356 break;
1357 case OPTION_VERSION_SCRIPT:
1358 /* This option indicates a small script that only specifies
1359 version information. Read it, but don't assume that
1360 we've seen a linker script. */
1361 {
1362 FILE *hold_script_handle;
1363
1364 hold_script_handle = saved_script_handle;
1365 ldfile_open_command_file (optarg);
1366 saved_script_handle = hold_script_handle;
1367 parser_input = input_version_script;
1368 yyparse ();
1369 }
1370 break;
1371 case OPTION_VERSION_EXPORTS_SECTION:
1372 /* This option records a version symbol to be applied to the
1373 symbols listed for export to be found in the object files
1374 .exports sections. */
1375 command_line.version_exports_section = optarg;
1376 break;
1377 case OPTION_DYNAMIC_LIST_DATA:
1378 command_line.dynamic_list = dynamic_list_data;
1379 if (command_line.symbolic == symbolic)
1380 command_line.symbolic = symbolic_unset;
1381 break;
1382 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1383 lang_append_dynamic_list_cpp_typeinfo ();
1384 if (command_line.dynamic_list != dynamic_list_data)
1385 command_line.dynamic_list = dynamic_list;
1386 if (command_line.symbolic == symbolic)
1387 command_line.symbolic = symbolic_unset;
1388 break;
1389 case OPTION_DYNAMIC_LIST_CPP_NEW:
1390 lang_append_dynamic_list_cpp_new ();
1391 if (command_line.dynamic_list != dynamic_list_data)
1392 command_line.dynamic_list = dynamic_list;
1393 if (command_line.symbolic == symbolic)
1394 command_line.symbolic = symbolic_unset;
1395 break;
1396 case OPTION_DYNAMIC_LIST:
1397 /* This option indicates a small script that only specifies
1398 a dynamic list. Read it, but don't assume that we've
1399 seen a linker script. */
1400 {
1401 FILE *hold_script_handle;
1402
1403 hold_script_handle = saved_script_handle;
1404 ldfile_open_command_file (optarg);
1405 saved_script_handle = hold_script_handle;
1406 parser_input = input_dynamic_list;
1407 yyparse ();
1408 }
1409 if (command_line.dynamic_list != dynamic_list_data)
1410 command_line.dynamic_list = dynamic_list;
1411 if (command_line.symbolic == symbolic)
1412 command_line.symbolic = symbolic_unset;
1413 break;
1414 case OPTION_WARN_COMMON:
1415 config.warn_common = TRUE;
1416 break;
1417 case OPTION_WARN_CONSTRUCTORS:
1418 config.warn_constructors = TRUE;
1419 break;
1420 case OPTION_WARN_FATAL:
1421 config.fatal_warnings = TRUE;
1422 break;
1423 case OPTION_NO_WARN_FATAL:
1424 config.fatal_warnings = FALSE;
1425 break;
1426 case OPTION_WARN_MULTIPLE_GP:
1427 config.warn_multiple_gp = TRUE;
1428 break;
1429 case OPTION_WARN_ONCE:
1430 config.warn_once = TRUE;
1431 break;
1432 case OPTION_WARN_SECTION_ALIGN:
1433 config.warn_section_align = TRUE;
1434 break;
1435 case OPTION_WARN_SHARED_TEXTREL:
1436 link_info.warn_shared_textrel = TRUE;
1437 break;
1438 case OPTION_WARN_ALTERNATE_EM:
1439 link_info.warn_alternate_em = TRUE;
1440 break;
1441 case OPTION_WHOLE_ARCHIVE:
1442 input_flags.whole_archive = TRUE;
1443 break;
1444 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1445 input_flags.add_DT_NEEDED_for_dynamic = TRUE;
1446 break;
1447 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1448 input_flags.add_DT_NEEDED_for_dynamic = FALSE;
1449 break;
1450 case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1451 input_flags.add_DT_NEEDED_for_regular = TRUE;
1452 break;
1453 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1454 input_flags.add_DT_NEEDED_for_regular = FALSE;
1455 break;
1456 case OPTION_WRAP:
1457 add_wrap (optarg);
1458 break;
1459 case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1460 add_ignoresym (&link_info, optarg);
1461 break;
1462 case OPTION_DISCARD_NONE:
1463 link_info.discard = discard_none;
1464 break;
1465 case 'X':
1466 link_info.discard = discard_l;
1467 break;
1468 case 'x':
1469 link_info.discard = discard_all;
1470 break;
1471 case 'Y':
1472 if (CONST_STRNEQ (optarg, "P,"))
1473 optarg += 2;
1474 if (default_dirlist != NULL)
1475 free (default_dirlist);
1476 default_dirlist = xstrdup (optarg);
1477 break;
1478 case 'y':
1479 add_ysym (optarg);
1480 break;
1481 case OPTION_SPARE_DYNAMIC_TAGS:
1482 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1483 break;
1484 case OPTION_SPLIT_BY_RELOC:
1485 if (optarg != NULL)
1486 config.split_by_reloc = strtoul (optarg, NULL, 0);
1487 else
1488 config.split_by_reloc = 32768;
1489 break;
1490 case OPTION_SPLIT_BY_FILE:
1491 if (optarg != NULL)
1492 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1493 else
1494 config.split_by_file = 1;
1495 break;
1496 case OPTION_CHECK_SECTIONS:
1497 command_line.check_section_addresses = 1;
1498 break;
1499 case OPTION_NO_CHECK_SECTIONS:
1500 command_line.check_section_addresses = 0;
1501 break;
1502 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1503 command_line.accept_unknown_input_arch = TRUE;
1504 break;
1505 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1506 command_line.accept_unknown_input_arch = FALSE;
1507 break;
1508 case '(':
1509 lang_enter_group ();
1510 ingroup++;
1511 break;
1512 case ')':
1513 if (! ingroup)
1514 einfo (_("%F%P: group ended before it began (--help for usage)\n"));
1515
1516 lang_leave_group ();
1517 ingroup--;
1518 break;
1519
1520 case OPTION_INIT:
1521 link_info.init_function = optarg;
1522 break;
1523
1524 case OPTION_FINI:
1525 link_info.fini_function = optarg;
1526 break;
1527
1528 case OPTION_REDUCE_MEMORY_OVERHEADS:
1529 link_info.reduce_memory_overheads = TRUE;
1530 if (config.hash_table_size == 0)
1531 config.hash_table_size = 1021;
1532 break;
1533
1534 case OPTION_HASH_SIZE:
1535 {
1536 bfd_size_type new_size;
1537
1538 new_size = strtoul (optarg, NULL, 0);
1539 if (new_size)
1540 config.hash_table_size = new_size;
1541 else
1542 einfo (_("%X%P: --hash-size needs a numeric argument\n"));
1543 }
1544 break;
1545
1546 case OPTION_PUSH_STATE:
1547 input_flags.pushed = xmemdup (&input_flags,
1548 sizeof (input_flags),
1549 sizeof (input_flags));
1550 break;
1551
1552 case OPTION_POP_STATE:
1553 if (input_flags.pushed == NULL)
1554 einfo (_("%F%P: no state pushed before popping\n"));
1555 else
1556 {
1557 struct lang_input_statement_flags *oldp = input_flags.pushed;
1558 memcpy (&input_flags, oldp, sizeof (input_flags));
1559 free (oldp);
1560 }
1561 break;
1562
1563 case OPTION_PRINT_MEMORY_USAGE:
1564 command_line.print_memory_usage = TRUE;
1565 break;
1566
1567 case OPTION_ORPHAN_HANDLING:
1568 if (strcasecmp (optarg, "place") == 0)
1569 config.orphan_handling = orphan_handling_place;
1570 else if (strcasecmp (optarg, "warn") == 0)
1571 config.orphan_handling = orphan_handling_warn;
1572 else if (strcasecmp (optarg, "error") == 0)
1573 config.orphan_handling = orphan_handling_error;
1574 else if (strcasecmp (optarg, "discard") == 0)
1575 config.orphan_handling = orphan_handling_discard;
1576 else
1577 einfo (_("%F%P: invalid argument to option"
1578 " \"--orphan-handling\"\n"));
1579 break;
1580 }
1581 }
1582
1583 if (command_line.soname && command_line.soname[0] == '\0')
1584 {
1585 einfo (_("%P: SONAME must not be empty string; ignored\n"));
1586 command_line.soname = NULL;
1587 }
1588
1589 while (ingroup)
1590 {
1591 lang_leave_group ();
1592 ingroup--;
1593 }
1594
1595 if (default_dirlist != NULL)
1596 {
1597 set_default_dirlist (default_dirlist);
1598 free (default_dirlist);
1599 }
1600
1601 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1602 /* FIXME: Should we allow emulations a chance to set this ? */
1603 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1604
1605 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1606 /* FIXME: Should we allow emulations a chance to set this ? */
1607 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1608
1609 if (bfd_link_relocatable (&link_info)
1610 && command_line.check_section_addresses < 0)
1611 command_line.check_section_addresses = 0;
1612
1613 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1614 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1615 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
1616 for PIC outputs. -Bsymbolic overrides all others and vice versa. */
1617 switch (command_line.symbolic)
1618 {
1619 case symbolic_unset:
1620 break;
1621 case symbolic:
1622 /* -Bsymbolic is for PIC output only. */
1623 if (bfd_link_pic (&link_info))
1624 {
1625 link_info.symbolic = TRUE;
1626 /* Should we free the unused memory? */
1627 link_info.dynamic_list = NULL;
1628 command_line.dynamic_list = dynamic_list_unset;
1629 }
1630 break;
1631 case symbolic_functions:
1632 /* -Bsymbolic-functions is for PIC output only. */
1633 if (bfd_link_pic (&link_info))
1634 command_line.dynamic_list = dynamic_list_data;
1635 break;
1636 }
1637
1638 switch (command_line.dynamic_list)
1639 {
1640 case dynamic_list_unset:
1641 break;
1642 case dynamic_list_data:
1643 link_info.dynamic_data = TRUE;
1644 /* Fall through. */
1645 case dynamic_list:
1646 link_info.dynamic = TRUE;
1647 break;
1648 }
1649
1650 if (!bfd_link_dll (&link_info))
1651 {
1652 if (command_line.filter_shlib)
1653 einfo (_("%F%P: -F may not be used without -shared\n"));
1654 if (command_line.auxiliary_filters)
1655 einfo (_("%F%P: -f may not be used without -shared\n"));
1656 }
1657
1658 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
1659 don't see how else this can be handled, since in this case we
1660 must preserve all externally visible symbols. */
1661 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all)
1662 {
1663 link_info.strip = strip_debugger;
1664 if (link_info.discard == discard_sec_merge)
1665 link_info.discard = discard_all;
1666 }
1667 }
1668
1669 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1670 library search path. */
1671
1672 static void
1673 set_default_dirlist (char *dirlist_ptr)
1674 {
1675 char *p;
1676
1677 while (1)
1678 {
1679 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1680 if (p != NULL)
1681 *p = '\0';
1682 if (*dirlist_ptr != '\0')
1683 ldfile_add_library_path (dirlist_ptr, TRUE);
1684 if (p == NULL)
1685 break;
1686 dirlist_ptr = p + 1;
1687 }
1688 }
1689
1690 static void
1691 set_section_start (char *sect, char *valstr)
1692 {
1693 const char *end;
1694 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1695 if (*end)
1696 einfo (_("%F%P: invalid hex number `%s'\n"), valstr);
1697 lang_section_start (sect, exp_intop (val), NULL);
1698 }
1699
1700 static void
1701 set_segment_start (const char *section, char *valstr)
1702 {
1703 const char *name;
1704 const char *end;
1705 segment_type *seg;
1706
1707 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1708 if (*end)
1709 einfo (_("%F%P: invalid hex number `%s'\n"), valstr);
1710 /* If we already have an entry for this segment, update the existing
1711 value. */
1712 name = section + 1;
1713 for (seg = segments; seg; seg = seg->next)
1714 if (strcmp (seg->name, name) == 0)
1715 {
1716 seg->value = val;
1717 lang_section_start (section, exp_intop (val), seg);
1718 return;
1719 }
1720 /* There was no existing value so we must create a new segment
1721 entry. */
1722 seg = (segment_type *) stat_alloc (sizeof (*seg));
1723 seg->name = name;
1724 seg->value = val;
1725 seg->used = FALSE;
1726 /* Add it to the linked list of segments. */
1727 seg->next = segments;
1728 segments = seg;
1729 /* Historically, -Ttext and friends set the base address of a
1730 particular section. For backwards compatibility, we still do
1731 that. If a SEGMENT_START directive is seen, the section address
1732 assignment will be disabled. */
1733 lang_section_start (section, exp_intop (val), seg);
1734 }
1735
1736 static void
1737 elf_shlib_list_options (FILE *file)
1738 {
1739 fprintf (file, _("\
1740 --audit=AUDITLIB Specify a library to use for auditing\n"));
1741 fprintf (file, _("\
1742 -Bgroup Selects group name lookup rules for DSO\n"));
1743 fprintf (file, _("\
1744 --disable-new-dtags Disable new dynamic tags\n"));
1745 fprintf (file, _("\
1746 --enable-new-dtags Enable new dynamic tags\n"));
1747 fprintf (file, _("\
1748 --eh-frame-hdr Create .eh_frame_hdr section\n"));
1749 fprintf (file, _("\
1750 --no-eh-frame-hdr Do not create .eh_frame_hdr section\n"));
1751 fprintf (file, _("\
1752 --exclude-libs=LIBS Make all symbols in LIBS hidden\n"));
1753 fprintf (file, _("\
1754 --hash-style=STYLE Set hash style to sysv, gnu or both\n"));
1755 fprintf (file, _("\
1756 -P AUDITLIB, --depaudit=AUDITLIB\n" "\
1757 Specify a library to use for auditing dependencies\n"));
1758 fprintf (file, _("\
1759 -z combreloc Merge dynamic relocs into one section and sort\n"));
1760 fprintf (file, _("\
1761 -z nocombreloc Don't merge dynamic relocs into one section\n"));
1762 fprintf (file, _("\
1763 -z global Make symbols in DSO available for subsequently\n\
1764 loaded objects\n"));
1765 fprintf (file, _("\
1766 -z initfirst Mark DSO to be initialized first at runtime\n"));
1767 fprintf (file, _("\
1768 -z interpose Mark object to interpose all DSOs but executable\n"));
1769 fprintf (file, _("\
1770 -z lazy Mark object lazy runtime binding (default)\n"));
1771 fprintf (file, _("\
1772 -z loadfltr Mark object requiring immediate process\n"));
1773 fprintf (file, _("\
1774 -z nocopyreloc Don't create copy relocs\n"));
1775 fprintf (file, _("\
1776 -z nodefaultlib Mark object not to use default search paths\n"));
1777 fprintf (file, _("\
1778 -z nodelete Mark DSO non-deletable at runtime\n"));
1779 fprintf (file, _("\
1780 -z nodlopen Mark DSO not available to dlopen\n"));
1781 fprintf (file, _("\
1782 -z nodump Mark DSO not available to dldump\n"));
1783 fprintf (file, _("\
1784 -z now Mark object non-lazy runtime binding\n"));
1785 fprintf (file, _("\
1786 -z origin Mark object requiring immediate $ORIGIN\n\
1787 processing at runtime\n"));
1788 #if DEFAULT_LD_Z_RELRO
1789 fprintf (file, _("\
1790 -z relro Create RELRO program header (default)\n"));
1791 fprintf (file, _("\
1792 -z norelro Don't create RELRO program header\n"));
1793 #else
1794 fprintf (file, _("\
1795 -z relro Create RELRO program header\n"));
1796 fprintf (file, _("\
1797 -z norelro Don't create RELRO program header (default)\n"));
1798 #endif
1799 #if DEFAULT_LD_Z_SEPARATE_CODE
1800 fprintf (file, _("\
1801 -z separate-code Create separate code program header (default)\n"));
1802 fprintf (file, _("\
1803 -z noseparate-code Don't create separate code program header\n"));
1804 #else
1805 fprintf (file, _("\
1806 -z separate-code Create separate code program header\n"));
1807 fprintf (file, _("\
1808 -z noseparate-code Don't create separate code program header (default)\n"));
1809 #endif
1810 fprintf (file, _("\
1811 -z common Generate common symbols with STT_COMMON type\n"));
1812 fprintf (file, _("\
1813 -z nocommon Generate common symbols with STT_OBJECT type\n"));
1814 fprintf (file, _("\
1815 -z stack-size=SIZE Set size of stack segment\n"));
1816 fprintf (file, _("\
1817 -z text Treat DT_TEXTREL in shared object as error\n"));
1818 fprintf (file, _("\
1819 -z notext Don't treat DT_TEXTREL in shared object as error\n"));
1820 fprintf (file, _("\
1821 -z textoff Don't treat DT_TEXTREL in shared object as error\n"));
1822 }
1823
1824 static void
1825 elf_static_list_options (FILE *file)
1826 {
1827 fprintf (file, _("\
1828 --build-id[=STYLE] Generate build ID note\n"));
1829 fprintf (file, _("\
1830 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\
1831 Compress DWARF debug sections using zlib\n"));
1832 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG
1833 fprintf (file, _("\
1834 Default: zlib-gabi\n"));
1835 #else
1836 fprintf (file, _("\
1837 Default: none\n"));
1838 #endif
1839 fprintf (file, _("\
1840 -z common-page-size=SIZE Set common page size to SIZE\n"));
1841 fprintf (file, _("\
1842 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
1843 fprintf (file, _("\
1844 -z defs Report unresolved symbols in object files\n"));
1845 fprintf (file, _("\
1846 -z muldefs Allow multiple definitions\n"));
1847 fprintf (file, _("\
1848 -z execstack Mark executable as requiring executable stack\n"));
1849 fprintf (file, _("\
1850 -z noexecstack Mark executable as not requiring executable stack\n"));
1851 fprintf (file, _("\
1852 -z globalaudit Mark executable requiring global auditing\n"));
1853 }
1854
1855 static void
1856 elf_plt_unwind_list_options (FILE *file)
1857 {
1858 fprintf (file, _("\
1859 --ld-generated-unwind-info Generate exception handling info for PLT\n"));
1860 fprintf (file, _("\
1861 --no-ld-generated-unwind-info\n\
1862 Don't generate exception handling info for PLT\n"));
1863 }
1864
1865 static void
1866 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib,
1867 bfd_boolean plt_unwind)
1868 {
1869 if (!elf)
1870 return;
1871 printf (_("ELF emulations:\n"));
1872 if (plt_unwind)
1873 elf_plt_unwind_list_options (file);
1874 elf_static_list_options (file);
1875 if (shlib)
1876 elf_shlib_list_options (file);
1877 }
1878
1879 \f
1880 /* Print help messages for the options. */
1881
1882 static void
1883 help (void)
1884 {
1885 unsigned i;
1886 const char **targets, **pp;
1887 int len;
1888
1889 printf (_("Usage: %s [options] file...\n"), program_name);
1890
1891 printf (_("Options:\n"));
1892 for (i = 0; i < OPTION_COUNT; i++)
1893 {
1894 if (ld_options[i].doc != NULL)
1895 {
1896 bfd_boolean comma;
1897 unsigned j;
1898
1899 printf (" ");
1900
1901 comma = FALSE;
1902 len = 2;
1903
1904 j = i;
1905 do
1906 {
1907 if (ld_options[j].shortopt != '\0'
1908 && ld_options[j].control != NO_HELP)
1909 {
1910 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1911 len += (comma ? 2 : 0) + 2;
1912 if (ld_options[j].arg != NULL)
1913 {
1914 if (ld_options[j].opt.has_arg != optional_argument)
1915 {
1916 printf (" ");
1917 ++len;
1918 }
1919 printf ("%s", _(ld_options[j].arg));
1920 len += strlen (_(ld_options[j].arg));
1921 }
1922 comma = TRUE;
1923 }
1924 ++j;
1925 }
1926 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1927
1928 j = i;
1929 do
1930 {
1931 if (ld_options[j].opt.name != NULL
1932 && ld_options[j].control != NO_HELP)
1933 {
1934 int two_dashes =
1935 (ld_options[j].control == TWO_DASHES
1936 || ld_options[j].control == EXACTLY_TWO_DASHES);
1937
1938 printf ("%s-%s%s",
1939 comma ? ", " : "",
1940 two_dashes ? "-" : "",
1941 ld_options[j].opt.name);
1942 len += ((comma ? 2 : 0)
1943 + 1
1944 + (two_dashes ? 1 : 0)
1945 + strlen (ld_options[j].opt.name));
1946 if (ld_options[j].arg != NULL)
1947 {
1948 printf (" %s", _(ld_options[j].arg));
1949 len += 1 + strlen (_(ld_options[j].arg));
1950 }
1951 comma = TRUE;
1952 }
1953 ++j;
1954 }
1955 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1956
1957 if (len >= 30)
1958 {
1959 printf ("\n");
1960 len = 0;
1961 }
1962
1963 for (; len < 30; len++)
1964 putchar (' ');
1965
1966 printf ("%s\n", _(ld_options[i].doc));
1967 }
1968 }
1969 printf (_(" @FILE"));
1970 for (len = strlen (" @FILE"); len < 30; len++)
1971 putchar (' ');
1972 printf (_("Read options from FILE\n"));
1973
1974 /* Note: Various tools (such as libtool) depend upon the
1975 format of the listings below - do not change them. */
1976 /* xgettext:c-format */
1977 printf (_("%s: supported targets:"), program_name);
1978 targets = bfd_target_list ();
1979 for (pp = targets; *pp != NULL; pp++)
1980 printf (" %s", *pp);
1981 free (targets);
1982 printf ("\n");
1983
1984 /* xgettext:c-format */
1985 printf (_("%s: supported emulations: "), program_name);
1986 ldemul_list_emulations (stdout);
1987 printf ("\n");
1988
1989 /* xgettext:c-format */
1990 printf (_("%s: emulation specific options:\n"), program_name);
1991 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS,
1992 ELF_PLT_UNWIND_LIST_OPTIONS);
1993 ldemul_list_emulation_options (stdout);
1994 printf ("\n");
1995
1996 if (REPORT_BUGS_TO[0])
1997 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1998 }
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