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[PATCH 52/57][Arm][OBJDUMP] Add support for MVE instructions: vadc, vabav, vabd,...
[binutils-gdb.git] / ld / lexsup.c
blobdacb9623b404a766b8ac65e35eb538b999fa6446
1 /* Parse options for the GNU linker.
2 Copyright (C) 1991-2019 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 { {"print-map-discarded", no_argument, NULL, OPTION_PRINT_MAP_DISCARDED},
547 '\0', NULL, N_("Show discarded sections in map file output (default)"),
548 TWO_DASHES },
549 { {"no-print-map-discarded", no_argument, NULL, OPTION_NO_PRINT_MAP_DISCARDED},
550 '\0', NULL, N_("Do not show discarded sections in map file output"),
551 TWO_DASHES },
552 };
553
554 #define OPTION_COUNT ARRAY_SIZE (ld_options)
555
556 void
557 parse_args (unsigned argc, char **argv)
558 {
559 unsigned i;
560 int is, il, irl;
561 int ingroup = 0;
562 char *default_dirlist = NULL;
563 char *shortopts;
564 struct option *longopts;
565 struct option *really_longopts;
566 int last_optind;
567 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
568
569 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
570 longopts = (struct option *)
571 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
572 really_longopts = (struct option *)
573 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
574
575 /* Starting the short option string with '-' is for programs that
576 expect options and other ARGV-elements in any order and that care about
577 the ordering of the two. We describe each non-option ARGV-element
578 as if it were the argument of an option with character code 1. */
579 shortopts[0] = '-';
580 is = 1;
581 il = 0;
582 irl = 0;
583 for (i = 0; i < OPTION_COUNT; i++)
584 {
585 if (ld_options[i].shortopt != '\0')
586 {
587 shortopts[is] = ld_options[i].shortopt;
588 ++is;
589 if (ld_options[i].opt.has_arg == required_argument
590 || ld_options[i].opt.has_arg == optional_argument)
591 {
592 shortopts[is] = ':';
593 ++is;
594 if (ld_options[i].opt.has_arg == optional_argument)
595 {
596 shortopts[is] = ':';
597 ++is;
598 }
599 }
600 }
601 if (ld_options[i].opt.name != NULL)
602 {
603 if (ld_options[i].control == EXACTLY_TWO_DASHES)
604 {
605 really_longopts[irl] = ld_options[i].opt;
606 ++irl;
607 }
608 else
609 {
610 longopts[il] = ld_options[i].opt;
611 ++il;
612 }
613 }
614 }
615 shortopts[is] = '\0';
616 longopts[il].name = NULL;
617 really_longopts[irl].name = NULL;
618
619 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
620
621 /* The -G option is ambiguous on different platforms. Sometimes it
622 specifies the largest data size to put into the small data
623 section. Sometimes it is equivalent to --shared. Unfortunately,
624 the first form takes an argument, while the second does not.
625
626 We need to permit the --shared form because on some platforms,
627 such as Solaris, gcc -shared will pass -G to the linker.
628
629 To permit either usage, we look through the argument list. If we
630 find -G not followed by a number, we change it into --shared.
631 This will work for most normal cases. */
632 for (i = 1; i < argc; i++)
633 if (strcmp (argv[i], "-G") == 0
634 && (i + 1 >= argc
635 || ! ISDIGIT (argv[i + 1][0])))
636 argv[i] = (char *) "--shared";
637
638 /* Because we permit long options to start with a single dash, and
639 we have a --library option, and the -l option is conventionally
640 used with an immediately following argument, we can have bad
641 results if somebody tries to use -l with a library whose name
642 happens to start with "ibrary", as in -li. We avoid problems by
643 simply turning -l into --library. This means that users will
644 have to use two dashes in order to use --library, which is OK
645 since that's how it is documented.
646
647 FIXME: It's possible that this problem can arise for other short
648 options as well, although the user does always have the recourse
649 of adding a space between the option and the argument. */
650 for (i = 1; i < argc; i++)
651 {
652 if (argv[i][0] == '-'
653 && argv[i][1] == 'l'
654 && argv[i][2] != '\0')
655 {
656 char *n;
657
658 n = (char *) xmalloc (strlen (argv[i]) + 20);
659 sprintf (n, "--library=%s", argv[i] + 2);
660 argv[i] = n;
661 }
662 }
663
664 last_optind = -1;
665 while (1)
666 {
667 int longind;
668 int optc;
669 static unsigned int defsym_count;
670
671 /* Using last_optind lets us avoid calling ldemul_parse_args
672 multiple times on a single option, which would lead to
673 confusion in the internal static variables maintained by
674 getopt. This could otherwise happen for an argument like
675 -nx, in which the -n is parsed as a single option, and we
676 loop around to pick up the -x. */
677 if (optind != last_optind)
678 if (ldemul_parse_args (argc, argv))
679 continue;
680
681 /* getopt_long_only is like getopt_long, but '-' as well as '--'
682 can indicate a long option. */
683 opterr = 0;
684 last_optind = optind;
685 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
686 if (optc == '?')
687 {
688 optind = last_optind;
689 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
690 }
691
692 if (ldemul_handle_option (optc))
693 continue;
694
695 if (optc == -1)
696 break;
697
698 switch (optc)
699 {
700 case '?':
701 {
702 /* If the last word on the command line is an option that
703 requires an argument, getopt will refuse to recognise it.
704 Try to catch such options here and issue a more helpful
705 error message than just "unrecognized option". */
706 int opt;
707
708 for (opt = ARRAY_SIZE (ld_options); opt--;)
709 if (ld_options[opt].opt.has_arg == required_argument
710 /* FIXME: There are a few short options that do not
711 have long equivalents, but which require arguments.
712 We should handle them too. */
713 && ld_options[opt].opt.name != NULL
714 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0)
715 {
716 einfo (_("%P: %s: missing argument\n"), argv[last_optind]);
717 break;
718 }
719
720 if (opt == -1)
721 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
722 }
723 /* Fall through. */
724
725 default:
726 einfo (_("%F%P: use the --help option for usage information\n"));
727 break;
728
729 case 1: /* File name. */
730 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
731 break;
732
733 case OPTION_IGNORE:
734 break;
735 case 'a':
736 /* For HP/UX compatibility. Actually -a shared should mean
737 ``use only shared libraries'' but, then, we don't
738 currently support shared libraries on HP/UX anyhow. */
739 if (strcmp (optarg, "archive") == 0)
740 input_flags.dynamic = FALSE;
741 else if (strcmp (optarg, "shared") == 0
742 || strcmp (optarg, "default") == 0)
743 input_flags.dynamic = TRUE;
744 else
745 einfo (_("%F%P: unrecognized -a option `%s'\n"), optarg);
746 break;
747 case OPTION_ASSERT:
748 /* FIXME: We just ignore these, but we should handle them. */
749 if (strcmp (optarg, "definitions") == 0)
750 ;
751 else if (strcmp (optarg, "nodefinitions") == 0)
752 ;
753 else if (strcmp (optarg, "nosymbolic") == 0)
754 ;
755 else if (strcmp (optarg, "pure-text") == 0)
756 ;
757 else
758 einfo (_("%F%P: unrecognized -assert option `%s'\n"), optarg);
759 break;
760 case 'A':
761 ldfile_add_arch (optarg);
762 break;
763 case 'b':
764 lang_add_target (optarg);
765 break;
766 case 'c':
767 ldfile_open_command_file (optarg);
768 parser_input = input_mri_script;
769 yyparse ();
770 break;
771 case OPTION_CALL_SHARED:
772 input_flags.dynamic = TRUE;
773 break;
774 case OPTION_NON_SHARED:
775 input_flags.dynamic = FALSE;
776 break;
777 case OPTION_CREF:
778 command_line.cref = TRUE;
779 link_info.notice_all = TRUE;
780 break;
781 case 'd':
782 command_line.force_common_definition = TRUE;
783 break;
784 case OPTION_FORCE_GROUP_ALLOCATION:
785 command_line.force_group_allocation = TRUE;
786 break;
787 case OPTION_DEFSYM:
788 lex_string = optarg;
789 lex_redirect (optarg, "--defsym", ++defsym_count);
790 parser_input = input_defsym;
791 yyparse ();
792 lex_string = NULL;
793 break;
794 case OPTION_DEMANGLE:
795 demangling = TRUE;
796 if (optarg != NULL)
797 {
798 enum demangling_styles style;
799
800 style = cplus_demangle_name_to_style (optarg);
801 if (style == unknown_demangling)
802 einfo (_("%F%P: unknown demangling style `%s'\n"),
803 optarg);
804
805 cplus_demangle_set_style (style);
806 }
807 break;
808 case 'I': /* Used on Solaris. */
809 case OPTION_DYNAMIC_LINKER:
810 command_line.interpreter = optarg;
811 link_info.nointerp = 0;
812 break;
813 case OPTION_NO_DYNAMIC_LINKER:
814 link_info.nointerp = 1;
815 break;
816 case OPTION_SYSROOT:
817 /* Already handled in ldmain.c. */
818 break;
819 case OPTION_EB:
820 command_line.endian = ENDIAN_BIG;
821 break;
822 case OPTION_EL:
823 command_line.endian = ENDIAN_LITTLE;
824 break;
825 case OPTION_EMBEDDED_RELOCS:
826 command_line.embedded_relocs = TRUE;
827 break;
828 case OPTION_EXPORT_DYNAMIC:
829 case 'E': /* HP/UX compatibility. */
830 link_info.export_dynamic = TRUE;
831 break;
832 case OPTION_NO_EXPORT_DYNAMIC:
833 link_info.export_dynamic = FALSE;
834 break;
835 case 'e':
836 lang_add_entry (optarg, TRUE);
837 break;
838 case 'f':
839 if (command_line.auxiliary_filters == NULL)
840 {
841 command_line.auxiliary_filters = (char **)
842 xmalloc (2 * sizeof (char *));
843 command_line.auxiliary_filters[0] = optarg;
844 command_line.auxiliary_filters[1] = NULL;
845 }
846 else
847 {
848 int c;
849 char **p;
850
851 c = 0;
852 for (p = command_line.auxiliary_filters; *p != NULL; p++)
853 ++c;
854 command_line.auxiliary_filters = (char **)
855 xrealloc (command_line.auxiliary_filters,
856 (c + 2) * sizeof (char *));
857 command_line.auxiliary_filters[c] = optarg;
858 command_line.auxiliary_filters[c + 1] = NULL;
859 }
860 break;
861 case 'F':
862 command_line.filter_shlib = optarg;
863 break;
864 case OPTION_FORCE_EXE_SUFFIX:
865 command_line.force_exe_suffix = TRUE;
866 break;
867 case 'G':
868 {
869 char *end;
870 g_switch_value = strtoul (optarg, &end, 0);
871 if (*end)
872 einfo (_("%F%P: invalid number `%s'\n"), optarg);
873 }
874 break;
875 case 'g':
876 /* Ignore. */
877 break;
878 case OPTION_GC_SECTIONS:
879 link_info.gc_sections = TRUE;
880 break;
881 case OPTION_PRINT_GC_SECTIONS:
882 link_info.print_gc_sections = TRUE;
883 break;
884 case OPTION_GC_KEEP_EXPORTED:
885 link_info.gc_keep_exported = TRUE;
886 break;
887 case OPTION_HELP:
888 help ();
889 xexit (0);
890 break;
891 case 'L':
892 ldfile_add_library_path (optarg, TRUE);
893 break;
894 case 'l':
895 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
896 break;
897 case 'M':
898 config.map_filename = "-";
899 break;
900 case 'm':
901 /* Ignore. Was handled in a pre-parse. */
902 break;
903 case OPTION_MAP:
904 config.map_filename = optarg;
905 break;
906 case 'N':
907 config.text_read_only = FALSE;
908 config.magic_demand_paged = FALSE;
909 input_flags.dynamic = FALSE;
910 break;
911 case OPTION_NO_OMAGIC:
912 config.text_read_only = TRUE;
913 config.magic_demand_paged = TRUE;
914 /* NB/ Does not set input_flags.dynamic to TRUE.
915 Use --call-shared or -Bdynamic for this. */
916 break;
917 case 'n':
918 config.magic_demand_paged = FALSE;
919 input_flags.dynamic = FALSE;
920 break;
921 case OPTION_NO_DEFINE_COMMON:
922 link_info.inhibit_common_definition = TRUE;
923 break;
924 case OPTION_NO_DEMANGLE:
925 demangling = FALSE;
926 break;
927 case OPTION_NO_GC_SECTIONS:
928 link_info.gc_sections = FALSE;
929 break;
930 case OPTION_NO_PRINT_GC_SECTIONS:
931 link_info.print_gc_sections = FALSE;
932 break;
933 case OPTION_NO_KEEP_MEMORY:
934 link_info.keep_memory = FALSE;
935 break;
936 case OPTION_NO_UNDEFINED:
937 link_info.unresolved_syms_in_objects
938 = how_to_report_unresolved_symbols;
939 break;
940 case OPTION_ALLOW_SHLIB_UNDEFINED:
941 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
942 break;
943 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
944 link_info.unresolved_syms_in_shared_libs
945 = how_to_report_unresolved_symbols;
946 break;
947 case OPTION_UNRESOLVED_SYMBOLS:
948 if (strcmp (optarg, "ignore-all") == 0)
949 {
950 link_info.unresolved_syms_in_objects = RM_IGNORE;
951 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
952 }
953 else if (strcmp (optarg, "report-all") == 0)
954 {
955 link_info.unresolved_syms_in_objects
956 = how_to_report_unresolved_symbols;
957 link_info.unresolved_syms_in_shared_libs
958 = how_to_report_unresolved_symbols;
959 }
960 else if (strcmp (optarg, "ignore-in-object-files") == 0)
961 {
962 link_info.unresolved_syms_in_objects = RM_IGNORE;
963 link_info.unresolved_syms_in_shared_libs
964 = how_to_report_unresolved_symbols;
965 }
966 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
967 {
968 link_info.unresolved_syms_in_objects
969 = how_to_report_unresolved_symbols;
970 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
971 }
972 else
973 einfo (_("%F%P: bad --unresolved-symbols option: %s\n"), optarg);
974 break;
975 case OPTION_WARN_UNRESOLVED_SYMBOLS:
976 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
977 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
978 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
979 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
980 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
981 break;
982
983 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
984 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
985 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
986 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
987 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
988 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
989 break;
990 case OPTION_ALLOW_MULTIPLE_DEFINITION:
991 link_info.allow_multiple_definition = TRUE;
992 break;
993 case OPTION_NO_UNDEFINED_VERSION:
994 link_info.allow_undefined_version = FALSE;
995 break;
996 case OPTION_DEFAULT_SYMVER:
997 link_info.create_default_symver = TRUE;
998 break;
999 case OPTION_DEFAULT_IMPORTED_SYMVER:
1000 link_info.default_imported_symver = TRUE;
1001 break;
1002 case OPTION_NO_WARN_MISMATCH:
1003 command_line.warn_mismatch = FALSE;
1004 break;
1005 case OPTION_NO_WARN_SEARCH_MISMATCH:
1006 command_line.warn_search_mismatch = FALSE;
1007 break;
1008 case OPTION_NOINHIBIT_EXEC:
1009 force_make_executable = TRUE;
1010 break;
1011 case OPTION_NOSTDLIB:
1012 config.only_cmd_line_lib_dirs = TRUE;
1013 break;
1014 case OPTION_NO_WHOLE_ARCHIVE:
1015 input_flags.whole_archive = FALSE;
1016 break;
1017 case 'O':
1018 /* FIXME "-O<non-digits> <value>" used to set the address of
1019 section <non-digits>. Was this for compatibility with
1020 something, or can we create a new option to do that
1021 (with a syntax similar to -defsym)?
1022 getopt can't handle two args to an option without kludges. */
1023
1024 /* Enable optimizations of output files. */
1025 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1026 break;
1027 case 'o':
1028 lang_add_output (optarg, 0);
1029 break;
1030 case OPTION_OFORMAT:
1031 lang_add_output_format (optarg, NULL, NULL, 0);
1032 break;
1033 case OPTION_OUT_IMPLIB:
1034 command_line.out_implib_filename = xstrdup (optarg);
1035 break;
1036 case OPTION_PRINT_SYSROOT:
1037 if (*ld_sysroot)
1038 puts (ld_sysroot);
1039 xexit (0);
1040 break;
1041 case OPTION_PRINT_OUTPUT_FORMAT:
1042 command_line.print_output_format = TRUE;
1043 break;
1044 #ifdef ENABLE_PLUGINS
1045 case OPTION_PLUGIN:
1046 plugin_opt_plugin (optarg);
1047 break;
1048 case OPTION_PLUGIN_OPT:
1049 if (plugin_opt_plugin_arg (optarg))
1050 einfo (_("%F%P: bad -plugin-opt option\n"));
1051 break;
1052 #endif /* ENABLE_PLUGINS */
1053 case 'q':
1054 link_info.emitrelocations = TRUE;
1055 break;
1056 case 'i':
1057 case 'r':
1058 if (optind == last_optind)
1059 /* This can happen if the user put "-rpath,a" on the command
1060 line. (Or something similar. The comma is important).
1061 Getopt becomes confused and thinks that this is a -r option
1062 but it cannot parse the text after the -r so it refuses to
1063 increment the optind counter. Detect this case and issue
1064 an error message here. We cannot just make this a warning,
1065 increment optind, and continue because getopt is too confused
1066 and will seg-fault the next time around. */
1067 einfo(_("%F%P: unrecognised option: %s\n"), argv[optind]);
1068
1069 if (bfd_link_pic (&link_info))
1070 einfo (_("%F%P: -r and %s may not be used together\n"),
1071 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1072
1073 link_info.type = type_relocatable;
1074 config.build_constructors = FALSE;
1075 config.magic_demand_paged = FALSE;
1076 config.text_read_only = FALSE;
1077 input_flags.dynamic = FALSE;
1078 break;
1079 case 'R':
1080 /* The GNU linker traditionally uses -R to mean to include
1081 only the symbols from a file. The Solaris linker uses -R
1082 to set the path used by the runtime linker to find
1083 libraries. This is the GNU linker -rpath argument. We
1084 try to support both simultaneously by checking the file
1085 named. If it is a directory, rather than a regular file,
1086 we assume -rpath was meant. */
1087 {
1088 struct stat s;
1089
1090 if (stat (optarg, &s) >= 0
1091 && ! S_ISDIR (s.st_mode))
1092 {
1093 lang_add_input_file (optarg,
1094 lang_input_file_is_symbols_only_enum,
1095 NULL);
1096 break;
1097 }
1098 }
1099 /* Fall through. */
1100 case OPTION_RPATH:
1101 if (command_line.rpath == NULL)
1102 command_line.rpath = xstrdup (optarg);
1103 else
1104 {
1105 size_t rpath_len = strlen (command_line.rpath);
1106 size_t optarg_len = strlen (optarg);
1107 char *buf;
1108 char *cp = command_line.rpath;
1109
1110 /* First see whether OPTARG is already in the path. */
1111 do
1112 {
1113 if (strncmp (optarg, cp, optarg_len) == 0
1114 && (cp[optarg_len] == 0
1115 || cp[optarg_len] == config.rpath_separator))
1116 /* We found it. */
1117 break;
1118
1119 /* Not yet found. */
1120 cp = strchr (cp, config.rpath_separator);
1121 if (cp != NULL)
1122 ++cp;
1123 }
1124 while (cp != NULL);
1125
1126 if (cp == NULL)
1127 {
1128 buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1129 sprintf (buf, "%s%c%s", command_line.rpath,
1130 config.rpath_separator, optarg);
1131 free (command_line.rpath);
1132 command_line.rpath = buf;
1133 }
1134 }
1135 break;
1136 case OPTION_RPATH_LINK:
1137 if (command_line.rpath_link == NULL)
1138 command_line.rpath_link = xstrdup (optarg);
1139 else
1140 {
1141 char *buf;
1142
1143 buf = (char *) xmalloc (strlen (command_line.rpath_link)
1144 + strlen (optarg)
1145 + 2);
1146 sprintf (buf, "%s%c%s", command_line.rpath_link,
1147 config.rpath_separator, optarg);
1148 free (command_line.rpath_link);
1149 command_line.rpath_link = buf;
1150 }
1151 break;
1152 case OPTION_NO_RELAX:
1153 DISABLE_RELAXATION;
1154 break;
1155 case OPTION_RELAX:
1156 ENABLE_RELAXATION;
1157 break;
1158 case OPTION_RETAIN_SYMBOLS_FILE:
1159 add_keepsyms_file (optarg);
1160 break;
1161 case 'S':
1162 link_info.strip = strip_debugger;
1163 break;
1164 case 's':
1165 link_info.strip = strip_all;
1166 break;
1167 case OPTION_STRIP_DISCARDED:
1168 link_info.strip_discarded = TRUE;
1169 break;
1170 case OPTION_NO_STRIP_DISCARDED:
1171 link_info.strip_discarded = FALSE;
1172 break;
1173 case OPTION_DISABLE_MULTIPLE_DEFS_ABS:
1174 link_info.prohibit_multiple_definition_absolute = TRUE;
1175 break;
1176 case OPTION_SHARED:
1177 if (config.has_shared)
1178 {
1179 if (bfd_link_relocatable (&link_info))
1180 einfo (_("%F%P: -r and %s may not be used together\n"),
1181 "-shared");
1182
1183 link_info.type = type_dll;
1184 /* When creating a shared library, the default
1185 behaviour is to ignore any unresolved references. */
1186 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1187 link_info.unresolved_syms_in_objects = RM_IGNORE;
1188 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1189 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1190 }
1191 else
1192 einfo (_("%F%P: -shared not supported\n"));
1193 break;
1194 case OPTION_PIE:
1195 if (config.has_shared)
1196 {
1197 if (bfd_link_relocatable (&link_info))
1198 einfo (_("%F%P: -r and %s may not be used together\n"), "-pie");
1199
1200 link_info.type = type_pie;
1201 }
1202 else
1203 einfo (_("%F%P: -pie not supported\n"));
1204 break;
1205 case 'h': /* Used on Solaris. */
1206 case OPTION_SONAME:
1207 if (optarg[0] == '\0' && command_line.soname
1208 && command_line.soname[0])
1209 einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
1210 else
1211 command_line.soname = optarg;
1212 break;
1213 case OPTION_SORT_COMMON:
1214 if (optarg == NULL
1215 || strcmp (optarg, N_("descending")) == 0)
1216 config.sort_common = sort_descending;
1217 else if (strcmp (optarg, N_("ascending")) == 0)
1218 config.sort_common = sort_ascending;
1219 else
1220 einfo (_("%F%P: invalid common section sorting option: %s\n"),
1221 optarg);
1222 break;
1223 case OPTION_SORT_SECTION:
1224 if (strcmp (optarg, N_("name")) == 0)
1225 sort_section = by_name;
1226 else if (strcmp (optarg, N_("alignment")) == 0)
1227 sort_section = by_alignment;
1228 else
1229 einfo (_("%F%P: invalid section sorting option: %s\n"),
1230 optarg);
1231 break;
1232 case OPTION_STATS:
1233 config.stats = TRUE;
1234 break;
1235 case OPTION_SYMBOLIC:
1236 command_line.symbolic = symbolic;
1237 break;
1238 case OPTION_SYMBOLIC_FUNCTIONS:
1239 command_line.symbolic = symbolic_functions;
1240 break;
1241 case 't':
1242 ++trace_files;
1243 break;
1244 case 'T':
1245 previous_script_handle = saved_script_handle;
1246 ldfile_open_command_file (optarg);
1247 parser_input = input_script;
1248 yyparse ();
1249 previous_script_handle = NULL;
1250 break;
1251 case OPTION_DEFAULT_SCRIPT:
1252 command_line.default_script = optarg;
1253 break;
1254 case OPTION_SECTION_START:
1255 {
1256 char *optarg2;
1257 char *sec_name;
1258 int len;
1259
1260 /* Check for <something>=<somthing>... */
1261 optarg2 = strchr (optarg, '=');
1262 if (optarg2 == NULL)
1263 einfo (_("%F%P: invalid argument to option"
1264 " \"--section-start\"\n"));
1265
1266 optarg2++;
1267
1268 /* So far so good. Are all the args present? */
1269 if ((*optarg == '\0') || (*optarg2 == '\0'))
1270 einfo (_("%F%P: missing argument(s) to option"
1271 " \"--section-start\"\n"));
1272
1273 /* We must copy the section name as set_section_start
1274 doesn't do it for us. */
1275 len = optarg2 - optarg;
1276 sec_name = (char *) xmalloc (len);
1277 memcpy (sec_name, optarg, len - 1);
1278 sec_name[len - 1] = 0;
1279
1280 /* Then set it... */
1281 set_section_start (sec_name, optarg2);
1282 }
1283 break;
1284 case OPTION_TARGET_HELP:
1285 /* Mention any target specific options. */
1286 ldemul_list_emulation_options (stdout);
1287 exit (0);
1288 case OPTION_TBSS:
1289 set_segment_start (".bss", optarg);
1290 break;
1291 case OPTION_TDATA:
1292 set_segment_start (".data", optarg);
1293 break;
1294 case OPTION_TTEXT:
1295 set_segment_start (".text", optarg);
1296 break;
1297 case OPTION_TTEXT_SEGMENT:
1298 set_segment_start (".text-segment", optarg);
1299 break;
1300 case OPTION_TRODATA_SEGMENT:
1301 set_segment_start (".rodata-segment", optarg);
1302 break;
1303 case OPTION_TLDATA_SEGMENT:
1304 set_segment_start (".ldata-segment", optarg);
1305 break;
1306 case OPTION_TRADITIONAL_FORMAT:
1307 link_info.traditional_format = TRUE;
1308 break;
1309 case OPTION_TASK_LINK:
1310 link_info.task_link = TRUE;
1311 /* Fall through. */
1312 case OPTION_UR:
1313 if (bfd_link_pic (&link_info))
1314 einfo (_("%F%P: -r and %s may not be used together\n"),
1315 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1316
1317 link_info.type = type_relocatable;
1318 config.build_constructors = TRUE;
1319 config.magic_demand_paged = FALSE;
1320 config.text_read_only = FALSE;
1321 input_flags.dynamic = FALSE;
1322 break;
1323 case 'u':
1324 ldlang_add_undef (optarg, TRUE);
1325 break;
1326 case OPTION_REQUIRE_DEFINED_SYMBOL:
1327 ldlang_add_require_defined (optarg);
1328 break;
1329 case OPTION_UNIQUE:
1330 if (optarg != NULL)
1331 lang_add_unique (optarg);
1332 else
1333 config.unique_orphan_sections = TRUE;
1334 break;
1335 case OPTION_VERBOSE:
1336 ldversion (1);
1337 version_printed = TRUE;
1338 verbose = TRUE;
1339 overflow_cutoff_limit = -2;
1340 if (optarg != NULL)
1341 {
1342 char *end;
1343 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1344 if (*end)
1345 einfo (_("%F%P: invalid number `%s'\n"), optarg);
1346 #ifdef ENABLE_PLUGINS
1347 report_plugin_symbols = level > 1;
1348 #endif /* ENABLE_PLUGINS */
1349 }
1350 break;
1351 case 'v':
1352 ldversion (0);
1353 version_printed = TRUE;
1354 break;
1355 case 'V':
1356 ldversion (1);
1357 version_printed = TRUE;
1358 break;
1359 case OPTION_VERSION:
1360 ldversion (2);
1361 xexit (0);
1362 break;
1363 case OPTION_VERSION_SCRIPT:
1364 /* This option indicates a small script that only specifies
1365 version information. Read it, but don't assume that
1366 we've seen a linker script. */
1367 {
1368 FILE *hold_script_handle;
1369
1370 hold_script_handle = saved_script_handle;
1371 ldfile_open_command_file (optarg);
1372 saved_script_handle = hold_script_handle;
1373 parser_input = input_version_script;
1374 yyparse ();
1375 }
1376 break;
1377 case OPTION_VERSION_EXPORTS_SECTION:
1378 /* This option records a version symbol to be applied to the
1379 symbols listed for export to be found in the object files
1380 .exports sections. */
1381 command_line.version_exports_section = optarg;
1382 break;
1383 case OPTION_DYNAMIC_LIST_DATA:
1384 command_line.dynamic_list = dynamic_list_data;
1385 if (command_line.symbolic == symbolic)
1386 command_line.symbolic = symbolic_unset;
1387 break;
1388 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1389 lang_append_dynamic_list_cpp_typeinfo ();
1390 if (command_line.dynamic_list != dynamic_list_data)
1391 command_line.dynamic_list = dynamic_list;
1392 if (command_line.symbolic == symbolic)
1393 command_line.symbolic = symbolic_unset;
1394 break;
1395 case OPTION_DYNAMIC_LIST_CPP_NEW:
1396 lang_append_dynamic_list_cpp_new ();
1397 if (command_line.dynamic_list != dynamic_list_data)
1398 command_line.dynamic_list = dynamic_list;
1399 if (command_line.symbolic == symbolic)
1400 command_line.symbolic = symbolic_unset;
1401 break;
1402 case OPTION_DYNAMIC_LIST:
1403 /* This option indicates a small script that only specifies
1404 a dynamic list. Read it, but don't assume that we've
1405 seen a linker script. */
1406 {
1407 FILE *hold_script_handle;
1408
1409 hold_script_handle = saved_script_handle;
1410 ldfile_open_command_file (optarg);
1411 saved_script_handle = hold_script_handle;
1412 parser_input = input_dynamic_list;
1413 yyparse ();
1414 }
1415 if (command_line.dynamic_list != dynamic_list_data)
1416 command_line.dynamic_list = dynamic_list;
1417 if (command_line.symbolic == symbolic)
1418 command_line.symbolic = symbolic_unset;
1419 break;
1420 case OPTION_WARN_COMMON:
1421 config.warn_common = TRUE;
1422 break;
1423 case OPTION_WARN_CONSTRUCTORS:
1424 config.warn_constructors = TRUE;
1425 break;
1426 case OPTION_WARN_FATAL:
1427 config.fatal_warnings = TRUE;
1428 break;
1429 case OPTION_NO_WARN_FATAL:
1430 config.fatal_warnings = FALSE;
1431 break;
1432 case OPTION_WARN_MULTIPLE_GP:
1433 config.warn_multiple_gp = TRUE;
1434 break;
1435 case OPTION_WARN_ONCE:
1436 config.warn_once = TRUE;
1437 break;
1438 case OPTION_WARN_SECTION_ALIGN:
1439 config.warn_section_align = TRUE;
1440 break;
1441 case OPTION_WARN_SHARED_TEXTREL:
1442 link_info.warn_shared_textrel = TRUE;
1443 break;
1444 case OPTION_WARN_ALTERNATE_EM:
1445 link_info.warn_alternate_em = TRUE;
1446 break;
1447 case OPTION_WHOLE_ARCHIVE:
1448 input_flags.whole_archive = TRUE;
1449 break;
1450 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1451 input_flags.add_DT_NEEDED_for_dynamic = TRUE;
1452 break;
1453 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1454 input_flags.add_DT_NEEDED_for_dynamic = FALSE;
1455 break;
1456 case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1457 input_flags.add_DT_NEEDED_for_regular = TRUE;
1458 break;
1459 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1460 input_flags.add_DT_NEEDED_for_regular = FALSE;
1461 break;
1462 case OPTION_WRAP:
1463 add_wrap (optarg);
1464 break;
1465 case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1466 add_ignoresym (&link_info, optarg);
1467 break;
1468 case OPTION_DISCARD_NONE:
1469 link_info.discard = discard_none;
1470 break;
1471 case 'X':
1472 link_info.discard = discard_l;
1473 break;
1474 case 'x':
1475 link_info.discard = discard_all;
1476 break;
1477 case 'Y':
1478 if (CONST_STRNEQ (optarg, "P,"))
1479 optarg += 2;
1480 if (default_dirlist != NULL)
1481 free (default_dirlist);
1482 default_dirlist = xstrdup (optarg);
1483 break;
1484 case 'y':
1485 add_ysym (optarg);
1486 break;
1487 case OPTION_SPARE_DYNAMIC_TAGS:
1488 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1489 break;
1490 case OPTION_SPLIT_BY_RELOC:
1491 if (optarg != NULL)
1492 config.split_by_reloc = strtoul (optarg, NULL, 0);
1493 else
1494 config.split_by_reloc = 32768;
1495 break;
1496 case OPTION_SPLIT_BY_FILE:
1497 if (optarg != NULL)
1498 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1499 else
1500 config.split_by_file = 1;
1501 break;
1502 case OPTION_CHECK_SECTIONS:
1503 command_line.check_section_addresses = 1;
1504 break;
1505 case OPTION_NO_CHECK_SECTIONS:
1506 command_line.check_section_addresses = 0;
1507 break;
1508 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1509 command_line.accept_unknown_input_arch = TRUE;
1510 break;
1511 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1512 command_line.accept_unknown_input_arch = FALSE;
1513 break;
1514 case '(':
1515 lang_enter_group ();
1516 ingroup++;
1517 break;
1518 case ')':
1519 if (! ingroup)
1520 einfo (_("%F%P: group ended before it began (--help for usage)\n"));
1521
1522 lang_leave_group ();
1523 ingroup--;
1524 break;
1525
1526 case OPTION_INIT:
1527 link_info.init_function = optarg;
1528 break;
1529
1530 case OPTION_FINI:
1531 link_info.fini_function = optarg;
1532 break;
1533
1534 case OPTION_REDUCE_MEMORY_OVERHEADS:
1535 link_info.reduce_memory_overheads = TRUE;
1536 if (config.hash_table_size == 0)
1537 config.hash_table_size = 1021;
1538 break;
1539
1540 case OPTION_HASH_SIZE:
1541 {
1542 bfd_size_type new_size;
1543
1544 new_size = strtoul (optarg, NULL, 0);
1545 if (new_size)
1546 config.hash_table_size = new_size;
1547 else
1548 einfo (_("%X%P: --hash-size needs a numeric argument\n"));
1549 }
1550 break;
1551
1552 case OPTION_PUSH_STATE:
1553 input_flags.pushed = xmemdup (&input_flags,
1554 sizeof (input_flags),
1555 sizeof (input_flags));
1556 break;
1557
1558 case OPTION_POP_STATE:
1559 if (input_flags.pushed == NULL)
1560 einfo (_("%F%P: no state pushed before popping\n"));
1561 else
1562 {
1563 struct lang_input_statement_flags *oldp = input_flags.pushed;
1564 memcpy (&input_flags, oldp, sizeof (input_flags));
1565 free (oldp);
1566 }
1567 break;
1568
1569 case OPTION_PRINT_MEMORY_USAGE:
1570 command_line.print_memory_usage = TRUE;
1571 break;
1572
1573 case OPTION_ORPHAN_HANDLING:
1574 if (strcasecmp (optarg, "place") == 0)
1575 config.orphan_handling = orphan_handling_place;
1576 else if (strcasecmp (optarg, "warn") == 0)
1577 config.orphan_handling = orphan_handling_warn;
1578 else if (strcasecmp (optarg, "error") == 0)
1579 config.orphan_handling = orphan_handling_error;
1580 else if (strcasecmp (optarg, "discard") == 0)
1581 config.orphan_handling = orphan_handling_discard;
1582 else
1583 einfo (_("%F%P: invalid argument to option"
1584 " \"--orphan-handling\"\n"));
1585 break;
1586
1587 case OPTION_NO_PRINT_MAP_DISCARDED:
1588 config.print_map_discarded = FALSE;
1589 break;
1590
1591 case OPTION_PRINT_MAP_DISCARDED:
1592 config.print_map_discarded = TRUE;
1593 break;
1594 }
1595 }
1596
1597 if (command_line.soname && command_line.soname[0] == '\0')
1598 {
1599 einfo (_("%P: SONAME must not be empty string; ignored\n"));
1600 command_line.soname = NULL;
1601 }
1602
1603 while (ingroup)
1604 {
1605 lang_leave_group ();
1606 ingroup--;
1607 }
1608
1609 if (default_dirlist != NULL)
1610 {
1611 set_default_dirlist (default_dirlist);
1612 free (default_dirlist);
1613 }
1614
1615 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1616 /* FIXME: Should we allow emulations a chance to set this ? */
1617 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1618
1619 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1620 /* FIXME: Should we allow emulations a chance to set this ? */
1621 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1622
1623 if (bfd_link_relocatable (&link_info)
1624 && command_line.check_section_addresses < 0)
1625 command_line.check_section_addresses = 0;
1626
1627 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1628 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1629 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
1630 for PIC outputs. -Bsymbolic overrides all others and vice versa. */
1631 switch (command_line.symbolic)
1632 {
1633 case symbolic_unset:
1634 break;
1635 case symbolic:
1636 /* -Bsymbolic is for PIC output only. */
1637 if (bfd_link_pic (&link_info))
1638 {
1639 link_info.symbolic = TRUE;
1640 /* Should we free the unused memory? */
1641 link_info.dynamic_list = NULL;
1642 command_line.dynamic_list = dynamic_list_unset;
1643 }
1644 break;
1645 case symbolic_functions:
1646 /* -Bsymbolic-functions is for PIC output only. */
1647 if (bfd_link_pic (&link_info))
1648 command_line.dynamic_list = dynamic_list_data;
1649 break;
1650 }
1651
1652 switch (command_line.dynamic_list)
1653 {
1654 case dynamic_list_unset:
1655 break;
1656 case dynamic_list_data:
1657 link_info.dynamic_data = TRUE;
1658 /* Fall through. */
1659 case dynamic_list:
1660 link_info.dynamic = TRUE;
1661 break;
1662 }
1663
1664 if (!bfd_link_dll (&link_info))
1665 {
1666 if (command_line.filter_shlib)
1667 einfo (_("%F%P: -F may not be used without -shared\n"));
1668 if (command_line.auxiliary_filters)
1669 einfo (_("%F%P: -f may not be used without -shared\n"));
1670 }
1671
1672 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
1673 don't see how else this can be handled, since in this case we
1674 must preserve all externally visible symbols. */
1675 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all)
1676 {
1677 link_info.strip = strip_debugger;
1678 if (link_info.discard == discard_sec_merge)
1679 link_info.discard = discard_all;
1680 }
1681 }
1682
1683 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1684 library search path. */
1685
1686 static void
1687 set_default_dirlist (char *dirlist_ptr)
1688 {
1689 char *p;
1690
1691 while (1)
1692 {
1693 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1694 if (p != NULL)
1695 *p = '\0';
1696 if (*dirlist_ptr != '\0')
1697 ldfile_add_library_path (dirlist_ptr, TRUE);
1698 if (p == NULL)
1699 break;
1700 dirlist_ptr = p + 1;
1701 }
1702 }
1703
1704 static void
1705 set_section_start (char *sect, char *valstr)
1706 {
1707 const char *end;
1708 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1709 if (*end)
1710 einfo (_("%F%P: invalid hex number `%s'\n"), valstr);
1711 lang_section_start (sect, exp_intop (val), NULL);
1712 }
1713
1714 static void
1715 set_segment_start (const char *section, char *valstr)
1716 {
1717 const char *name;
1718 const char *end;
1719 segment_type *seg;
1720
1721 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1722 if (*end)
1723 einfo (_("%F%P: invalid hex number `%s'\n"), valstr);
1724 /* If we already have an entry for this segment, update the existing
1725 value. */
1726 name = section + 1;
1727 for (seg = segments; seg; seg = seg->next)
1728 if (strcmp (seg->name, name) == 0)
1729 {
1730 seg->value = val;
1731 lang_section_start (section, exp_intop (val), seg);
1732 return;
1733 }
1734 /* There was no existing value so we must create a new segment
1735 entry. */
1736 seg = (segment_type *) stat_alloc (sizeof (*seg));
1737 seg->name = name;
1738 seg->value = val;
1739 seg->used = FALSE;
1740 /* Add it to the linked list of segments. */
1741 seg->next = segments;
1742 segments = seg;
1743 /* Historically, -Ttext and friends set the base address of a
1744 particular section. For backwards compatibility, we still do
1745 that. If a SEGMENT_START directive is seen, the section address
1746 assignment will be disabled. */
1747 lang_section_start (section, exp_intop (val), seg);
1748 }
1749
1750 static void
1751 elf_shlib_list_options (FILE *file)
1752 {
1753 fprintf (file, _("\
1754 --audit=AUDITLIB Specify a library to use for auditing\n"));
1755 fprintf (file, _("\
1756 -Bgroup Selects group name lookup rules for DSO\n"));
1757 fprintf (file, _("\
1758 --disable-new-dtags Disable new dynamic tags\n"));
1759 fprintf (file, _("\
1760 --enable-new-dtags Enable new dynamic tags\n"));
1761 fprintf (file, _("\
1762 --eh-frame-hdr Create .eh_frame_hdr section\n"));
1763 fprintf (file, _("\
1764 --no-eh-frame-hdr Do not create .eh_frame_hdr section\n"));
1765 fprintf (file, _("\
1766 --exclude-libs=LIBS Make all symbols in LIBS hidden\n"));
1767 fprintf (file, _("\
1768 --hash-style=STYLE Set hash style to sysv, gnu or both\n"));
1769 fprintf (file, _("\
1770 -P AUDITLIB, --depaudit=AUDITLIB\n" "\
1771 Specify a library to use for auditing dependencies\n"));
1772 fprintf (file, _("\
1773 -z combreloc Merge dynamic relocs into one section and sort\n"));
1774 fprintf (file, _("\
1775 -z nocombreloc Don't merge dynamic relocs into one section\n"));
1776 fprintf (file, _("\
1777 -z global Make symbols in DSO available for subsequently\n\
1778 loaded objects\n"));
1779 fprintf (file, _("\
1780 -z initfirst Mark DSO to be initialized first at runtime\n"));
1781 fprintf (file, _("\
1782 -z interpose Mark object to interpose all DSOs but executable\n"));
1783 fprintf (file, _("\
1784 -z lazy Mark object lazy runtime binding (default)\n"));
1785 fprintf (file, _("\
1786 -z loadfltr Mark object requiring immediate process\n"));
1787 fprintf (file, _("\
1788 -z nocopyreloc Don't create copy relocs\n"));
1789 fprintf (file, _("\
1790 -z nodefaultlib Mark object not to use default search paths\n"));
1791 fprintf (file, _("\
1792 -z nodelete Mark DSO non-deletable at runtime\n"));
1793 fprintf (file, _("\
1794 -z nodlopen Mark DSO not available to dlopen\n"));
1795 fprintf (file, _("\
1796 -z nodump Mark DSO not available to dldump\n"));
1797 fprintf (file, _("\
1798 -z now Mark object non-lazy runtime binding\n"));
1799 fprintf (file, _("\
1800 -z origin Mark object requiring immediate $ORIGIN\n\
1801 processing at runtime\n"));
1802 #if DEFAULT_LD_Z_RELRO
1803 fprintf (file, _("\
1804 -z relro Create RELRO program header (default)\n"));
1805 fprintf (file, _("\
1806 -z norelro Don't create RELRO program header\n"));
1807 #else
1808 fprintf (file, _("\
1809 -z relro Create RELRO program header\n"));
1810 fprintf (file, _("\
1811 -z norelro Don't create RELRO program header (default)\n"));
1812 #endif
1813 #if DEFAULT_LD_Z_SEPARATE_CODE
1814 fprintf (file, _("\
1815 -z separate-code Create separate code program header (default)\n"));
1816 fprintf (file, _("\
1817 -z noseparate-code Don't create separate code program header\n"));
1818 #else
1819 fprintf (file, _("\
1820 -z separate-code Create separate code program header\n"));
1821 fprintf (file, _("\
1822 -z noseparate-code Don't create separate code program header (default)\n"));
1823 #endif
1824 fprintf (file, _("\
1825 -z common Generate common symbols with STT_COMMON type\n"));
1826 fprintf (file, _("\
1827 -z nocommon Generate common symbols with STT_OBJECT type\n"));
1828 fprintf (file, _("\
1829 -z stack-size=SIZE Set size of stack segment\n"));
1830 fprintf (file, _("\
1831 -z text Treat DT_TEXTREL in shared object as error\n"));
1832 fprintf (file, _("\
1833 -z notext Don't treat DT_TEXTREL in shared object as error\n"));
1834 fprintf (file, _("\
1835 -z textoff Don't treat DT_TEXTREL in shared object as error\n"));
1836 }
1837
1838 static void
1839 elf_static_list_options (FILE *file)
1840 {
1841 fprintf (file, _("\
1842 --build-id[=STYLE] Generate build ID note\n"));
1843 fprintf (file, _("\
1844 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\
1845 Compress DWARF debug sections using zlib\n"));
1846 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG
1847 fprintf (file, _("\
1848 Default: zlib-gabi\n"));
1849 #else
1850 fprintf (file, _("\
1851 Default: none\n"));
1852 #endif
1853 fprintf (file, _("\
1854 -z common-page-size=SIZE Set common page size to SIZE\n"));
1855 fprintf (file, _("\
1856 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
1857 fprintf (file, _("\
1858 -z defs Report unresolved symbols in object files\n"));
1859 fprintf (file, _("\
1860 -z muldefs Allow multiple definitions\n"));
1861 fprintf (file, _("\
1862 -z execstack Mark executable as requiring executable stack\n"));
1863 fprintf (file, _("\
1864 -z noexecstack Mark executable as not requiring executable stack\n"));
1865 fprintf (file, _("\
1866 -z globalaudit Mark executable requiring global auditing\n"));
1867 }
1868
1869 static void
1870 elf_plt_unwind_list_options (FILE *file)
1871 {
1872 fprintf (file, _("\
1873 --ld-generated-unwind-info Generate exception handling info for PLT\n"));
1874 fprintf (file, _("\
1875 --no-ld-generated-unwind-info\n\
1876 Don't generate exception handling info for PLT\n"));
1877 }
1878
1879 static void
1880 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib,
1881 bfd_boolean plt_unwind)
1882 {
1883 if (!elf)
1884 return;
1885 printf (_("ELF emulations:\n"));
1886 if (plt_unwind)
1887 elf_plt_unwind_list_options (file);
1888 elf_static_list_options (file);
1889 if (shlib)
1890 elf_shlib_list_options (file);
1891 }
1892
1893 \f
1894 /* Print help messages for the options. */
1895
1896 static void
1897 help (void)
1898 {
1899 unsigned i;
1900 const char **targets, **pp;
1901 int len;
1902
1903 printf (_("Usage: %s [options] file...\n"), program_name);
1904
1905 printf (_("Options:\n"));
1906 for (i = 0; i < OPTION_COUNT; i++)
1907 {
1908 if (ld_options[i].doc != NULL)
1909 {
1910 bfd_boolean comma;
1911 unsigned j;
1912
1913 printf (" ");
1914
1915 comma = FALSE;
1916 len = 2;
1917
1918 j = i;
1919 do
1920 {
1921 if (ld_options[j].shortopt != '\0'
1922 && ld_options[j].control != NO_HELP)
1923 {
1924 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1925 len += (comma ? 2 : 0) + 2;
1926 if (ld_options[j].arg != NULL)
1927 {
1928 if (ld_options[j].opt.has_arg != optional_argument)
1929 {
1930 printf (" ");
1931 ++len;
1932 }
1933 printf ("%s", _(ld_options[j].arg));
1934 len += strlen (_(ld_options[j].arg));
1935 }
1936 comma = TRUE;
1937 }
1938 ++j;
1939 }
1940 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1941
1942 j = i;
1943 do
1944 {
1945 if (ld_options[j].opt.name != NULL
1946 && ld_options[j].control != NO_HELP)
1947 {
1948 int two_dashes =
1949 (ld_options[j].control == TWO_DASHES
1950 || ld_options[j].control == EXACTLY_TWO_DASHES);
1951
1952 printf ("%s-%s%s",
1953 comma ? ", " : "",
1954 two_dashes ? "-" : "",
1955 ld_options[j].opt.name);
1956 len += ((comma ? 2 : 0)
1957 + 1
1958 + (two_dashes ? 1 : 0)
1959 + strlen (ld_options[j].opt.name));
1960 if (ld_options[j].arg != NULL)
1961 {
1962 printf (" %s", _(ld_options[j].arg));
1963 len += 1 + strlen (_(ld_options[j].arg));
1964 }
1965 comma = TRUE;
1966 }
1967 ++j;
1968 }
1969 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1970
1971 if (len >= 30)
1972 {
1973 printf ("\n");
1974 len = 0;
1975 }
1976
1977 for (; len < 30; len++)
1978 putchar (' ');
1979
1980 printf ("%s\n", _(ld_options[i].doc));
1981 }
1982 }
1983 printf (_(" @FILE"));
1984 for (len = strlen (" @FILE"); len < 30; len++)
1985 putchar (' ');
1986 printf (_("Read options from FILE\n"));
1987
1988 /* Note: Various tools (such as libtool) depend upon the
1989 format of the listings below - do not change them. */
1990 /* xgettext:c-format */
1991 printf (_("%s: supported targets:"), program_name);
1992 targets = bfd_target_list ();
1993 for (pp = targets; *pp != NULL; pp++)
1994 printf (" %s", *pp);
1995 free (targets);
1996 printf ("\n");
1997
1998 /* xgettext:c-format */
1999 printf (_("%s: supported emulations: "), program_name);
2000 ldemul_list_emulations (stdout);
2001 printf ("\n");
2002
2003 /* xgettext:c-format */
2004 printf (_("%s: emulation specific options:\n"), program_name);
2005 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS,
2006 ELF_PLT_UNWIND_LIST_OPTIONS);
2007 ldemul_list_emulation_options (stdout);
2008 printf ("\n");
2009
2010 if (REPORT_BUGS_TO[0])
2011 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
2012 }
The GNU Binutils are a collection of binary tools.