1 /* Parse options for the GNU linker.
2 Copyright (C) 1991-2014 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,
69 /* Use two dashes before long option name. */
70 TWO_DASHES,
71 /* Only accept two dashes before the long option name.
72 This is an overloading of the use of this enum, since originally it
73 was only intended to tell the --help display function how to display
74 the long option name. This feature was added in order to resolve
75 the confusion about the -omagic command line switch. Is it setting
76 the output file name to "magic" or is it setting the NMAGIC flag on
77 the output ? It has been decided that it is setting the output file
78 name, and that if you want to set the NMAGIC flag you should use -N
79 or --omagic. */
80 EXACTLY_TWO_DASHES,
81 /* Don't mention this option in --help output. */
82 NO_HELP
83 };
84
85 struct ld_option
86 {
87 /* The long option information. */
88 struct option opt;
89 /* The short option with the same meaning ('\0' if none). */
90 char shortopt;
91 /* The name of the argument (NULL if none). */
92 const char *arg;
93 /* The documentation string. If this is NULL, this is a synonym for
94 the previous option. */
95 const char *doc;
96 enum control_enum control;
97 };
98
99 static const struct ld_option ld_options[] =
100 {
101 { {NULL, required_argument, NULL, '\0'},
102 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
103 ONE_DASH },
104 { {"architecture", required_argument, NULL, 'A'},
105 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
106 { {"format", required_argument, NULL, 'b'},
107 'b', N_("TARGET"), N_("Specify target for following input files"),
108 TWO_DASHES },
109 { {"mri-script", required_argument, NULL, 'c'},
110 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
111 { {"dc", no_argument, NULL, 'd'},
112 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
113 { {"dp", no_argument, NULL, 'd'},
114 '\0', NULL, NULL, ONE_DASH },
115 { {"entry", required_argument, NULL, 'e'},
116 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
117 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
118 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
119 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
120 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
121 { {"EB", no_argument, NULL, OPTION_EB},
122 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
123 { {"EL", no_argument, NULL, OPTION_EL},
124 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
125 { {"auxiliary", required_argument, NULL, 'f'},
126 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
127 TWO_DASHES },
128 { {"filter", required_argument, NULL, 'F'},
129 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
130 TWO_DASHES },
131 { {NULL, no_argument, NULL, '\0'},
132 'g', NULL, N_("Ignored"), ONE_DASH },
133 { {"gpsize", required_argument, NULL, 'G'},
134 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
135 TWO_DASHES },
136 { {"soname", required_argument, NULL, OPTION_SONAME},
137 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
138 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
139 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
140 TWO_DASHES },
141 { {"library", required_argument, NULL, 'l'},
142 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
143 { {"library-path", required_argument, NULL, 'L'},
144 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
145 TWO_DASHES },
146 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
147 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
148 { {NULL, required_argument, NULL, '\0'},
149 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
150 { {"print-map", no_argument, NULL, 'M'},
151 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
152 { {"nmagic", no_argument, NULL, 'n'},
153 'n', NULL, N_("Do not page align data"), TWO_DASHES },
154 { {"omagic", no_argument, NULL, 'N'},
155 'N', NULL, N_("Do not page align data, do not make text readonly"),
156 EXACTLY_TWO_DASHES },
157 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
158 '\0', NULL, N_("Page align data, make text readonly"),
159 EXACTLY_TWO_DASHES },
160 { {"output", required_argument, NULL, 'o'},
161 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
162 { {NULL, required_argument, NULL, '\0'},
163 'O', NULL, N_("Optimize output file"), ONE_DASH },
164 #ifdef ENABLE_PLUGINS
165 { {"plugin", required_argument, NULL, OPTION_PLUGIN},
166 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
167 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
168 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
169 { {"flto", optional_argument, NULL, OPTION_IGNORE},
170 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
171 ONE_DASH },
172 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
173 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
174 ONE_DASH },
175 #endif /* ENABLE_PLUGINS */
176 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE},
177 '\0', NULL, N_("Ignored for GCC linker option compatibility"),
178 ONE_DASH },
179 { {"Qy", no_argument, NULL, OPTION_IGNORE},
180 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
181 { {"emit-relocs", no_argument, NULL, 'q'},
182 'q', NULL, "Generate relocations in final output", TWO_DASHES },
183 { {"relocatable", no_argument, NULL, 'r'},
184 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
185 { {NULL, no_argument, NULL, '\0'},
186 'i', NULL, NULL, ONE_DASH },
187 { {"just-symbols", required_argument, NULL, 'R'},
188 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
189 TWO_DASHES },
190 { {"strip-all", no_argument, NULL, 's'},
191 's', NULL, N_("Strip all symbols"), TWO_DASHES },
192 { {"strip-debug", no_argument, NULL, 'S'},
193 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
194 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
195 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
196 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
197 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
198 { {"trace", no_argument, NULL, 't'},
199 't', NULL, N_("Trace file opens"), TWO_DASHES },
200 { {"script", required_argument, NULL, 'T'},
201 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
202 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
203 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
204 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
205 '\0', NULL, NULL, ONE_DASH },
206 { {"undefined", required_argument, NULL, 'u'},
207 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
208 TWO_DASHES },
209 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
210 '\0', N_("[=SECTION]"),
211 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
212 { {"Ur", no_argument, NULL, OPTION_UR},
213 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
214 { {"version", no_argument, NULL, OPTION_VERSION},
215 'v', NULL, N_("Print version information"), TWO_DASHES },
216 { {NULL, no_argument, NULL, '\0'},
217 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
218 { {"discard-all", no_argument, NULL, 'x'},
219 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
220 { {"discard-locals", no_argument, NULL, 'X'},
221 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
222 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
223 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
224 { {"trace-symbol", required_argument, NULL, 'y'},
225 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
226 { {NULL, required_argument, NULL, '\0'},
227 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
228 ONE_DASH },
229 { {"start-group", no_argument, NULL, '('},
230 '(', NULL, N_("Start a group"), TWO_DASHES },
231 { {"end-group", no_argument, NULL, ')'},
232 ')', NULL, N_("End a group"), TWO_DASHES },
233 { {"accept-unknown-input-arch", no_argument, NULL,
234 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
235 '\0', NULL,
236 N_("Accept input files whose architecture cannot be determined"),
237 TWO_DASHES },
238 { {"no-accept-unknown-input-arch", no_argument, NULL,
239 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
240 '\0', NULL, N_("Reject input files whose architecture is unknown"),
241 TWO_DASHES },
242
243 /* The next two options are deprecated because of their similarity to
244 --as-needed and --no-as-needed. They have been replaced by
245 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */
246 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
247 '\0', NULL, NULL, NO_HELP },
248 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
249 '\0', NULL, NULL, NO_HELP },
250
251 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
252 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
253 TWO_DASHES },
254 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
255 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
256 " the command line"),
257 TWO_DASHES },
258 { {"assert", required_argument, NULL, OPTION_ASSERT},
259 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
260 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
261 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
262 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
263 '\0', NULL, NULL, ONE_DASH },
264 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
265 '\0', NULL, NULL, ONE_DASH },
266 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
267 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
268 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
269 '\0', NULL, NULL, ONE_DASH },
270 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
271 '\0', NULL, NULL, ONE_DASH },
272 { {"static", no_argument, NULL, OPTION_NON_SHARED},
273 '\0', NULL, NULL, ONE_DASH },
274 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
275 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
276 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
277 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
278 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
279 '\0', NULL, N_("Check section addresses for overlaps (default)"),
280 TWO_DASHES },
281 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
282 '\0', NULL, N_("Do not check section addresses for overlaps"),
283 TWO_DASHES },
284 { {"copy-dt-needed-entries", no_argument, NULL,
285 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
286 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
287 TWO_DASHES },
288 { {"no-copy-dt-needed-entries", no_argument, NULL,
289 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
290 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
291 TWO_DASHES },
292
293 { {"cref", no_argument, NULL, OPTION_CREF},
294 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
295 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
296 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
297 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
298 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
299 TWO_DASHES },
300 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
301 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
302 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
303 '\0', NULL, N_("Treat warnings as errors"),
304 TWO_DASHES },
305 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
306 '\0', NULL, N_("Do not treat warnings as errors (default)"),
307 TWO_DASHES },
308 { {"fini", required_argument, NULL, OPTION_FINI},
309 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
310 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
311 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
312 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
313 '\0', NULL, N_("Remove unused sections (on some targets)"),
314 TWO_DASHES },
315 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
316 '\0', NULL, N_("Don't remove unused sections (default)"),
317 TWO_DASHES },
318 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
319 '\0', NULL, N_("List removed unused sections on stderr"),
320 TWO_DASHES },
321 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
322 '\0', NULL, N_("Do not list removed unused sections"),
323 TWO_DASHES },
324 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
325 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
326 TWO_DASHES },
327 { {"help", no_argument, NULL, OPTION_HELP},
328 '\0', NULL, N_("Print option help"), TWO_DASHES },
329 { {"init", required_argument, NULL, OPTION_INIT},
330 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
331 { {"Map", required_argument, NULL, OPTION_MAP},
332 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
333 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
334 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
335 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
336 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
337 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
338 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
339 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
340 '\0', NULL, N_("Do not allow unresolved references in object files"),
341 TWO_DASHES },
342 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
343 '\0', NULL, N_("Allow unresolved references in shared libraries"),
344 TWO_DASHES },
345 { {"no-allow-shlib-undefined", no_argument, NULL,
346 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
347 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
348 TWO_DASHES },
349 { {"allow-multiple-definition", no_argument, NULL,
350 OPTION_ALLOW_MULTIPLE_DEFINITION},
351 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
352 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
353 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
354 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
355 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
356 { {"default-imported-symver", no_argument, NULL,
357 OPTION_DEFAULT_IMPORTED_SYMVER},
358 '\0', NULL, N_("Create default symbol version for imported symbols"),
359 TWO_DASHES },
360 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
361 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
362 { {"no-warn-search-mismatch", no_argument, NULL,
363 OPTION_NO_WARN_SEARCH_MISMATCH},
364 '\0', NULL, N_("Don't warn on finding an incompatible library"),
365 TWO_DASHES},
366 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
367 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
368 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
369 '\0', NULL, N_("Create an output file even if errors occur"),
370 TWO_DASHES },
371 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
372 '\0', NULL, NULL, NO_HELP },
373 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
374 '\0', NULL, N_("Only use library directories specified on\n"
375 " the command line"),
376 ONE_DASH },
377 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
378 '\0', N_("TARGET"), N_("Specify target of output file"),
379 EXACTLY_TWO_DASHES },
380 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
381 '\0', NULL, N_("Print default output format"), TWO_DASHES },
382 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT},
383 '\0', NULL, N_("Print current sysroot"), TWO_DASHES },
384 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
385 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
386 { {"reduce-memory-overheads", no_argument, NULL,
387 OPTION_REDUCE_MEMORY_OVERHEADS},
388 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
389 TWO_DASHES },
390 { {"relax", no_argument, NULL, OPTION_RELAX},
391 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
392 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
393 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
394 { {"retain-symbols-file", required_argument, NULL,
395 OPTION_RETAIN_SYMBOLS_FILE},
396 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
397 { {"rpath", required_argument, NULL, OPTION_RPATH},
398 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
399 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
400 '\0', N_("PATH"), N_("Set link time shared library search path"),
401 ONE_DASH },
402 { {"shared", no_argument, NULL, OPTION_SHARED},
403 '\0', NULL, N_("Create a shared library"), ONE_DASH },
404 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
405 '\0', NULL, NULL, ONE_DASH },
406 { {"pie", no_argument, NULL, OPTION_PIE},
407 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
408 { {"pic-executable", no_argument, NULL, OPTION_PIE},
409 '\0', NULL, NULL, TWO_DASHES },
410 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
411 '\0', N_("[=ascending|descending]"),
412 N_("Sort common symbols by alignment [in specified order]"),
413 TWO_DASHES },
414 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
415 '\0', NULL, NULL, NO_HELP },
416 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
417 '\0', N_("name|alignment"),
418 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
419 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
420 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
421 TWO_DASHES },
422 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
423 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
424 TWO_DASHES },
425 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
426 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
427 TWO_DASHES },
428 { {"stats", no_argument, NULL, OPTION_STATS},
429 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
430 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
431 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
432 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
433 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
434 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
435 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
436 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
437 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
438 TWO_DASHES },
439 { {"Tbss", required_argument, NULL, OPTION_TBSS},
440 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
441 { {"Tdata", required_argument, NULL, OPTION_TDATA},
442 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
443 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
444 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
445 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
446 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
447 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT},
448 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH },
449 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT},
450 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH },
451 { {"unresolved-symbols=<method>", required_argument, NULL,
452 OPTION_UNRESOLVED_SYMBOLS},
453 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
454 " ignore-all, report-all, ignore-in-object-files,\n"
455 " ignore-in-shared-libs"),
456 TWO_DASHES },
457 { {"verbose", optional_argument, NULL, OPTION_VERBOSE},
458 '\0', N_("[=NUMBER]"),
459 N_("Output lots of information during link"), TWO_DASHES },
460 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
461 '\0', NULL, NULL, NO_HELP },
462 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
463 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
464 { {"version-exports-section", required_argument, NULL,
465 OPTION_VERSION_EXPORTS_SECTION },
466 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
467 " SYMBOL as the version."),
468 TWO_DASHES },
469 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
470 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
471 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
472 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
473 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
474 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
475 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
476 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
477 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
478 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
479 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
480 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
481 TWO_DASHES },
482 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
483 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
484 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
485 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
486 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
487 '\0', NULL, N_("Warn if start of section changes due to alignment"),
488 TWO_DASHES },
489 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
490 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
491 TWO_DASHES },
492 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
493 '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
494 TWO_DASHES },
495 { {"warn-unresolved-symbols", no_argument, NULL,
496 OPTION_WARN_UNRESOLVED_SYMBOLS},
497 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
498 { {"error-unresolved-symbols", no_argument, NULL,
499 OPTION_ERROR_UNRESOLVED_SYMBOLS},
500 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
501 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
502 '\0', NULL, N_("Include all objects from following archives"),
503 TWO_DASHES },
504 { {"wrap", required_argument, NULL, OPTION_WRAP},
505 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
506 { {"ignore-unresolved-symbol", required_argument, NULL,
507 OPTION_IGNORE_UNRESOLVED_SYMBOL},
508 '\0', N_("SYMBOL"),
509 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
510 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE},
511 '\0', NULL, N_("Push state of flags governing input file handling"),
512 TWO_DASHES },
513 { {"pop-state", no_argument, NULL, OPTION_POP_STATE},
514 '\0', NULL, N_("Pop state of flags governing input file handling"),
515 TWO_DASHES },
516 { {"warn-poison-system-directories", no_argument, NULL,
517 OPTION_WARN_POISON_SYSTEM_DIRECTORIES},
518 '\0', NULL, N_("Warn for -L options using system directories"),
519 TWO_DASHES },
520 { {"no-warn-poison-system-directories", no_argument, NULL,
521 OPTION_NO_WARN_POISON_SYSTEM_DIRECTORIES},
522 '\0', NULL, N_("Do not warn for -L options using system directories"),
523 TWO_DASHES },
524 { {"error-poison-system-directories", no_argument, NULL,
525 OPTION_ERROR_POISON_SYSTEM_DIRECTORIES},
526 '\0', NULL, N_("Give an error for -L options using system directories"),
527 TWO_DASHES },
528 };
529
530 #define OPTION_COUNT ARRAY_SIZE (ld_options)
531
532 void
parse_args(unsigned argc,char ** argv)533 parse_args (unsigned argc, char **argv)
534 {
535 unsigned i;
536 int is, il, irl;
537 int ingroup = 0;
538 char *default_dirlist = NULL;
539 char *shortopts;
540 struct option *longopts;
541 struct option *really_longopts;
542 int last_optind;
543 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
544
545 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
546 longopts = (struct option *)
547 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
548 really_longopts = (struct option *)
549 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
550
551 /* Starting the short option string with '-' is for programs that
552 expect options and other ARGV-elements in any order and that care about
553 the ordering of the two. We describe each non-option ARGV-element
554 as if it were the argument of an option with character code 1. */
555 shortopts[0] = '-';
556 is = 1;
557 il = 0;
558 irl = 0;
559 for (i = 0; i < OPTION_COUNT; i++)
560 {
561 if (ld_options[i].shortopt != '\0')
562 {
563 shortopts[is] = ld_options[i].shortopt;
564 ++is;
565 if (ld_options[i].opt.has_arg == required_argument
566 || ld_options[i].opt.has_arg == optional_argument)
567 {
568 shortopts[is] = ':';
569 ++is;
570 if (ld_options[i].opt.has_arg == optional_argument)
571 {
572 shortopts[is] = ':';
573 ++is;
574 }
575 }
576 }
577 if (ld_options[i].opt.name != NULL)
578 {
579 if (ld_options[i].control == EXACTLY_TWO_DASHES)
580 {
581 really_longopts[irl] = ld_options[i].opt;
582 ++irl;
583 }
584 else
585 {
586 longopts[il] = ld_options[i].opt;
587 ++il;
588 }
589 }
590 }
591 shortopts[is] = '\0';
592 longopts[il].name = NULL;
593 really_longopts[irl].name = NULL;
594
595 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
596
597 /* The -G option is ambiguous on different platforms. Sometimes it
598 specifies the largest data size to put into the small data
599 section. Sometimes it is equivalent to --shared. Unfortunately,
600 the first form takes an argument, while the second does not.
601
602 We need to permit the --shared form because on some platforms,
603 such as Solaris, gcc -shared will pass -G to the linker.
604
605 To permit either usage, we look through the argument list. If we
606 find -G not followed by a number, we change it into --shared.
607 This will work for most normal cases. */
608 for (i = 1; i < argc; i++)
609 if (strcmp (argv[i], "-G") == 0
610 && (i + 1 >= argc
611 || ! ISDIGIT (argv[i + 1][0])))
612 argv[i] = (char *) "--shared";
613
614 /* Because we permit long options to start with a single dash, and
615 we have a --library option, and the -l option is conventionally
616 used with an immediately following argument, we can have bad
617 results if somebody tries to use -l with a library whose name
618 happens to start with "ibrary", as in -li. We avoid problems by
619 simply turning -l into --library. This means that users will
620 have to use two dashes in order to use --library, which is OK
621 since that's how it is documented.
622
623 FIXME: It's possible that this problem can arise for other short
624 options as well, although the user does always have the recourse
625 of adding a space between the option and the argument. */
626 for (i = 1; i < argc; i++)
627 {
628 if (argv[i][0] == '-'
629 && argv[i][1] == 'l'
630 && argv[i][2] != '\0')
631 {
632 char *n;
633
634 n = (char *) xmalloc (strlen (argv[i]) + 20);
635 sprintf (n, "--library=%s", argv[i] + 2);
636 argv[i] = n;
637 }
638 }
639
640 last_optind = -1;
641 while (1)
642 {
643 int longind;
644 int optc;
645 static unsigned int defsym_count;
646
647 /* Using last_optind lets us avoid calling ldemul_parse_args
648 multiple times on a single option, which would lead to
649 confusion in the internal static variables maintained by
650 getopt. This could otherwise happen for an argument like
651 -nx, in which the -n is parsed as a single option, and we
652 loop around to pick up the -x. */
653 if (optind != last_optind)
654 if (ldemul_parse_args (argc, argv))
655 continue;
656
657 /* getopt_long_only is like getopt_long, but '-' as well as '--'
658 can indicate a long option. */
659 opterr = 0;
660 last_optind = optind;
661 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
662 if (optc == '?')
663 {
664 optind = last_optind;
665 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
666 }
667
668 if (ldemul_handle_option (optc))
669 continue;
670
671 if (optc == -1)
672 break;
673
674 switch (optc)
675 {
676 case '?':
677 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
678 /* Fall through. */
679
680 default:
681 einfo (_("%P%F: use the --help option for usage information\n"));
682
683 case 1: /* File name. */
684 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
685 break;
686
687 case OPTION_IGNORE:
688 break;
689 case 'a':
690 /* For HP/UX compatibility. Actually -a shared should mean
691 ``use only shared libraries'' but, then, we don't
692 currently support shared libraries on HP/UX anyhow. */
693 if (strcmp (optarg, "archive") == 0)
694 input_flags.dynamic = FALSE;
695 else if (strcmp (optarg, "shared") == 0
696 || strcmp (optarg, "default") == 0)
697 input_flags.dynamic = TRUE;
698 else
699 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
700 break;
701 case OPTION_ASSERT:
702 /* FIXME: We just ignore these, but we should handle them. */
703 if (strcmp (optarg, "definitions") == 0)
704 ;
705 else if (strcmp (optarg, "nodefinitions") == 0)
706 ;
707 else if (strcmp (optarg, "nosymbolic") == 0)
708 ;
709 else if (strcmp (optarg, "pure-text") == 0)
710 ;
711 else
712 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
713 break;
714 case 'A':
715 ldfile_add_arch (optarg);
716 break;
717 case 'b':
718 lang_add_target (optarg);
719 break;
720 case 'c':
721 ldfile_open_command_file (optarg);
722 parser_input = input_mri_script;
723 yyparse ();
724 break;
725 case OPTION_CALL_SHARED:
726 input_flags.dynamic = TRUE;
727 break;
728 case OPTION_NON_SHARED:
729 input_flags.dynamic = FALSE;
730 break;
731 case OPTION_CREF:
732 command_line.cref = TRUE;
733 link_info.notice_all = TRUE;
734 break;
735 case 'd':
736 command_line.force_common_definition = TRUE;
737 break;
738 case OPTION_DEFSYM:
739 lex_string = optarg;
740 lex_redirect (optarg, "--defsym", ++defsym_count);
741 parser_input = input_defsym;
742 yyparse ();
743 lex_string = NULL;
744 break;
745 case OPTION_DEMANGLE:
746 demangling = TRUE;
747 if (optarg != NULL)
748 {
749 enum demangling_styles style;
750
751 style = cplus_demangle_name_to_style (optarg);
752 if (style == unknown_demangling)
753 einfo (_("%F%P: unknown demangling style `%s'\n"),
754 optarg);
755
756 cplus_demangle_set_style (style);
757 }
758 break;
759 case 'I': /* Used on Solaris. */
760 case OPTION_DYNAMIC_LINKER:
761 command_line.interpreter = optarg;
762 break;
763 case OPTION_SYSROOT:
764 /* Already handled in ldmain.c. */
765 break;
766 case OPTION_EB:
767 command_line.endian = ENDIAN_BIG;
768 break;
769 case OPTION_EL:
770 command_line.endian = ENDIAN_LITTLE;
771 break;
772 case OPTION_EMBEDDED_RELOCS:
773 command_line.embedded_relocs = TRUE;
774 break;
775 case OPTION_EXPORT_DYNAMIC:
776 case 'E': /* HP/UX compatibility. */
777 link_info.export_dynamic = TRUE;
778 break;
779 case OPTION_NO_EXPORT_DYNAMIC:
780 link_info.export_dynamic = FALSE;
781 break;
782 case 'e':
783 lang_add_entry (optarg, TRUE);
784 break;
785 case 'f':
786 if (command_line.auxiliary_filters == NULL)
787 {
788 command_line.auxiliary_filters = (char **)
789 xmalloc (2 * sizeof (char *));
790 command_line.auxiliary_filters[0] = optarg;
791 command_line.auxiliary_filters[1] = NULL;
792 }
793 else
794 {
795 int c;
796 char **p;
797
798 c = 0;
799 for (p = command_line.auxiliary_filters; *p != NULL; p++)
800 ++c;
801 command_line.auxiliary_filters = (char **)
802 xrealloc (command_line.auxiliary_filters,
803 (c + 2) * sizeof (char *));
804 command_line.auxiliary_filters[c] = optarg;
805 command_line.auxiliary_filters[c + 1] = NULL;
806 }
807 break;
808 case 'F':
809 command_line.filter_shlib = optarg;
810 break;
811 case OPTION_FORCE_EXE_SUFFIX:
812 command_line.force_exe_suffix = TRUE;
813 break;
814 case 'G':
815 {
816 char *end;
817 g_switch_value = strtoul (optarg, &end, 0);
818 if (*end)
819 einfo (_("%P%F: invalid number `%s'\n"), optarg);
820 }
821 break;
822 case 'g':
823 /* Ignore. */
824 break;
825 case OPTION_GC_SECTIONS:
826 link_info.gc_sections = TRUE;
827 break;
828 case OPTION_PRINT_GC_SECTIONS:
829 link_info.print_gc_sections = TRUE;
830 break;
831 case OPTION_HELP:
832 help ();
833 xexit (0);
834 break;
835 case 'L':
836 ldfile_add_library_path (optarg, TRUE);
837 break;
838 case 'l':
839 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
840 break;
841 case 'M':
842 config.map_filename = "-";
843 break;
844 case 'm':
845 /* Ignore. Was handled in a pre-parse. */
846 break;
847 case OPTION_MAP:
848 config.map_filename = optarg;
849 break;
850 case 'N':
851 config.text_read_only = FALSE;
852 config.magic_demand_paged = FALSE;
853 input_flags.dynamic = FALSE;
854 break;
855 case OPTION_NO_OMAGIC:
856 config.text_read_only = TRUE;
857 config.magic_demand_paged = TRUE;
858 /* NB/ Does not set input_flags.dynamic to TRUE.
859 Use --call-shared or -Bdynamic for this. */
860 break;
861 case 'n':
862 config.magic_demand_paged = FALSE;
863 input_flags.dynamic = FALSE;
864 break;
865 case OPTION_NO_DEFINE_COMMON:
866 command_line.inhibit_common_definition = TRUE;
867 break;
868 case OPTION_NO_DEMANGLE:
869 demangling = FALSE;
870 break;
871 case OPTION_NO_GC_SECTIONS:
872 link_info.gc_sections = FALSE;
873 break;
874 case OPTION_NO_PRINT_GC_SECTIONS:
875 link_info.print_gc_sections = FALSE;
876 break;
877 case OPTION_NO_KEEP_MEMORY:
878 link_info.keep_memory = FALSE;
879 break;
880 case OPTION_NO_UNDEFINED:
881 link_info.unresolved_syms_in_objects
882 = how_to_report_unresolved_symbols;
883 break;
884 case OPTION_ALLOW_SHLIB_UNDEFINED:
885 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
886 break;
887 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
888 link_info.unresolved_syms_in_shared_libs
889 = how_to_report_unresolved_symbols;
890 break;
891 case OPTION_UNRESOLVED_SYMBOLS:
892 if (strcmp (optarg, "ignore-all") == 0)
893 {
894 link_info.unresolved_syms_in_objects = RM_IGNORE;
895 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
896 }
897 else if (strcmp (optarg, "report-all") == 0)
898 {
899 link_info.unresolved_syms_in_objects
900 = how_to_report_unresolved_symbols;
901 link_info.unresolved_syms_in_shared_libs
902 = how_to_report_unresolved_symbols;
903 }
904 else if (strcmp (optarg, "ignore-in-object-files") == 0)
905 {
906 link_info.unresolved_syms_in_objects = RM_IGNORE;
907 link_info.unresolved_syms_in_shared_libs
908 = how_to_report_unresolved_symbols;
909 }
910 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
911 {
912 link_info.unresolved_syms_in_objects
913 = how_to_report_unresolved_symbols;
914 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
915 }
916 else
917 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
918 break;
919 case OPTION_WARN_UNRESOLVED_SYMBOLS:
920 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
921 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
922 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
923 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
924 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
925 break;
926
927 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
928 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
929 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
930 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
931 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
932 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
933 break;
934 case OPTION_ALLOW_MULTIPLE_DEFINITION:
935 link_info.allow_multiple_definition = TRUE;
936 break;
937 case OPTION_NO_UNDEFINED_VERSION:
938 link_info.allow_undefined_version = FALSE;
939 break;
940 case OPTION_DEFAULT_SYMVER:
941 link_info.create_default_symver = TRUE;
942 break;
943 case OPTION_DEFAULT_IMPORTED_SYMVER:
944 link_info.default_imported_symver = TRUE;
945 break;
946 case OPTION_NO_WARN_MISMATCH:
947 command_line.warn_mismatch = FALSE;
948 break;
949 case OPTION_NO_WARN_SEARCH_MISMATCH:
950 command_line.warn_search_mismatch = FALSE;
951 break;
952 case OPTION_NOINHIBIT_EXEC:
953 force_make_executable = TRUE;
954 break;
955 case OPTION_NOSTDLIB:
956 config.only_cmd_line_lib_dirs = TRUE;
957 break;
958 case OPTION_NO_WHOLE_ARCHIVE:
959 input_flags.whole_archive = FALSE;
960 break;
961 case 'O':
962 /* FIXME "-O<non-digits> <value>" used to set the address of
963 section <non-digits>. Was this for compatibility with
964 something, or can we create a new option to do that
965 (with a syntax similar to -defsym)?
966 getopt can't handle two args to an option without kludges. */
967
968 /* Enable optimizations of output files. */
969 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
970 break;
971 case 'o':
972 lang_add_output (optarg, 0);
973 break;
974 case OPTION_OFORMAT:
975 lang_add_output_format (optarg, NULL, NULL, 0);
976 break;
977 case OPTION_PRINT_SYSROOT:
978 if (*ld_sysroot)
979 puts (ld_sysroot);
980 xexit (0);
981 break;
982 case OPTION_PRINT_OUTPUT_FORMAT:
983 command_line.print_output_format = TRUE;
984 break;
985 #ifdef ENABLE_PLUGINS
986 case OPTION_PLUGIN:
987 plugin_opt_plugin (optarg);
988 break;
989 case OPTION_PLUGIN_OPT:
990 if (plugin_opt_plugin_arg (optarg))
991 einfo(_("%P%F: bad -plugin-opt option\n"));
992 break;
993 #endif /* ENABLE_PLUGINS */
994 case 'q':
995 link_info.emitrelocations = TRUE;
996 break;
997 case 'i':
998 case 'r':
999 if (optind == last_optind)
1000 /* This can happen if the user put "-rpath,a" on the command
1001 line. (Or something similar. The comma is important).
1002 Getopt becomes confused and thinks that this is a -r option
1003 but it cannot parse the text after the -r so it refuses to
1004 increment the optind counter. Detect this case and issue
1005 an error message here. We cannot just make this a warning,
1006 increment optind, and continue because getopt is too confused
1007 and will seg-fault the next time around. */
1008 einfo(_("%P%F: bad -rpath option\n"));
1009
1010 link_info.relocatable = TRUE;
1011 config.build_constructors = FALSE;
1012 config.magic_demand_paged = FALSE;
1013 config.text_read_only = FALSE;
1014 input_flags.dynamic = FALSE;
1015 break;
1016 case 'R':
1017 /* The GNU linker traditionally uses -R to mean to include
1018 only the symbols from a file. The Solaris linker uses -R
1019 to set the path used by the runtime linker to find
1020 libraries. This is the GNU linker -rpath argument. We
1021 try to support both simultaneously by checking the file
1022 named. If it is a directory, rather than a regular file,
1023 we assume -rpath was meant. */
1024 {
1025 struct stat s;
1026
1027 if (stat (optarg, &s) >= 0
1028 && ! S_ISDIR (s.st_mode))
1029 {
1030 lang_add_input_file (optarg,
1031 lang_input_file_is_symbols_only_enum,
1032 NULL);
1033 break;
1034 }
1035 }
1036 /* Fall through. */
1037 case OPTION_RPATH:
1038 if (command_line.rpath == NULL)
1039 command_line.rpath = xstrdup (optarg);
1040 else
1041 {
1042 size_t rpath_len = strlen (command_line.rpath);
1043 size_t optarg_len = strlen (optarg);
1044 char *buf;
1045 char *cp = command_line.rpath;
1046
1047 /* First see whether OPTARG is already in the path. */
1048 do
1049 {
1050 if (strncmp (optarg, cp, optarg_len) == 0
1051 && (cp[optarg_len] == 0
1052 || cp[optarg_len] == config.rpath_separator))
1053 /* We found it. */
1054 break;
1055
1056 /* Not yet found. */
1057 cp = strchr (cp, config.rpath_separator);
1058 if (cp != NULL)
1059 ++cp;
1060 }
1061 while (cp != NULL);
1062
1063 if (cp == NULL)
1064 {
1065 buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1066 sprintf (buf, "%s%c%s", command_line.rpath,
1067 config.rpath_separator, optarg);
1068 free (command_line.rpath);
1069 command_line.rpath = buf;
1070 }
1071 }
1072 break;
1073 case OPTION_RPATH_LINK:
1074 if (command_line.rpath_link == NULL)
1075 command_line.rpath_link = xstrdup (optarg);
1076 else
1077 {
1078 char *buf;
1079
1080 buf = (char *) xmalloc (strlen (command_line.rpath_link)
1081 + strlen (optarg)
1082 + 2);
1083 sprintf (buf, "%s%c%s", command_line.rpath_link,
1084 config.rpath_separator, optarg);
1085 free (command_line.rpath_link);
1086 command_line.rpath_link = buf;
1087 }
1088 break;
1089 case OPTION_NO_RELAX:
1090 DISABLE_RELAXATION;
1091 break;
1092 case OPTION_RELAX:
1093 ENABLE_RELAXATION;
1094 break;
1095 case OPTION_RETAIN_SYMBOLS_FILE:
1096 add_keepsyms_file (optarg);
1097 break;
1098 case 'S':
1099 link_info.strip = strip_debugger;
1100 break;
1101 case 's':
1102 link_info.strip = strip_all;
1103 break;
1104 case OPTION_STRIP_DISCARDED:
1105 link_info.strip_discarded = TRUE;
1106 break;
1107 case OPTION_NO_STRIP_DISCARDED:
1108 link_info.strip_discarded = FALSE;
1109 break;
1110 case OPTION_SHARED:
1111 if (config.has_shared)
1112 {
1113 link_info.shared = TRUE;
1114 /* When creating a shared library, the default
1115 behaviour is to ignore any unresolved references. */
1116 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1117 link_info.unresolved_syms_in_objects = RM_IGNORE;
1118 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1119 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1120 }
1121 else
1122 einfo (_("%P%F: -shared not supported\n"));
1123 break;
1124 case OPTION_PIE:
1125 if (config.has_shared)
1126 {
1127 link_info.shared = TRUE;
1128 link_info.pie = TRUE;
1129 }
1130 else
1131 einfo (_("%P%F: -pie not supported\n"));
1132 break;
1133 case 'h': /* Used on Solaris. */
1134 case OPTION_SONAME:
1135 if (optarg[0] == '\0' && command_line.soname
1136 && command_line.soname[0])
1137 einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
1138 else
1139 command_line.soname = optarg;
1140 break;
1141 case OPTION_SORT_COMMON:
1142 if (optarg == NULL
1143 || strcmp (optarg, N_("descending")) == 0)
1144 config.sort_common = sort_descending;
1145 else if (strcmp (optarg, N_("ascending")) == 0)
1146 config.sort_common = sort_ascending;
1147 else
1148 einfo (_("%P%F: invalid common section sorting option: %s\n"),
1149 optarg);
1150 break;
1151 case OPTION_SORT_SECTION:
1152 if (strcmp (optarg, N_("name")) == 0)
1153 sort_section = by_name;
1154 else if (strcmp (optarg, N_("alignment")) == 0)
1155 sort_section = by_alignment;
1156 else
1157 einfo (_("%P%F: invalid section sorting option: %s\n"),
1158 optarg);
1159 break;
1160 case OPTION_STATS:
1161 config.stats = TRUE;
1162 break;
1163 case OPTION_SYMBOLIC:
1164 command_line.symbolic = symbolic;
1165 break;
1166 case OPTION_SYMBOLIC_FUNCTIONS:
1167 command_line.symbolic = symbolic_functions;
1168 break;
1169 case 't':
1170 trace_files = TRUE;
1171 break;
1172 case 'T':
1173 previous_script_handle = saved_script_handle;
1174 ldfile_open_command_file (optarg);
1175 parser_input = input_script;
1176 yyparse ();
1177 previous_script_handle = NULL;
1178 break;
1179 case OPTION_DEFAULT_SCRIPT:
1180 command_line.default_script = optarg;
1181 break;
1182 case OPTION_SECTION_START:
1183 {
1184 char *optarg2;
1185 char *sec_name;
1186 int len;
1187
1188 /* Check for <something>=<somthing>... */
1189 optarg2 = strchr (optarg, '=');
1190 if (optarg2 == NULL)
1191 einfo (_("%P%F: invalid argument to option"
1192 " \"--section-start\"\n"));
1193
1194 optarg2++;
1195
1196 /* So far so good. Are all the args present? */
1197 if ((*optarg == '\0') || (*optarg2 == '\0'))
1198 einfo (_("%P%F: missing argument(s) to option"
1199 " \"--section-start\"\n"));
1200
1201 /* We must copy the section name as set_section_start
1202 doesn't do it for us. */
1203 len = optarg2 - optarg;
1204 sec_name = (char *) xmalloc (len);
1205 memcpy (sec_name, optarg, len - 1);
1206 sec_name[len - 1] = 0;
1207
1208 /* Then set it... */
1209 set_section_start (sec_name, optarg2);
1210 }
1211 break;
1212 case OPTION_TARGET_HELP:
1213 /* Mention any target specific options. */
1214 ldemul_list_emulation_options (stdout);
1215 exit (0);
1216 case OPTION_TBSS:
1217 set_segment_start (".bss", optarg);
1218 break;
1219 case OPTION_TDATA:
1220 set_segment_start (".data", optarg);
1221 break;
1222 case OPTION_TTEXT:
1223 set_segment_start (".text", optarg);
1224 break;
1225 case OPTION_TTEXT_SEGMENT:
1226 set_segment_start (".text-segment", optarg);
1227 break;
1228 case OPTION_TRODATA_SEGMENT:
1229 set_segment_start (".rodata-segment", optarg);
1230 break;
1231 case OPTION_TLDATA_SEGMENT:
1232 set_segment_start (".ldata-segment", optarg);
1233 break;
1234 case OPTION_TRADITIONAL_FORMAT:
1235 link_info.traditional_format = TRUE;
1236 break;
1237 case OPTION_TASK_LINK:
1238 link_info.task_link = TRUE;
1239 /* Fall through - do an implied -r option. */
1240 case OPTION_UR:
1241 link_info.relocatable = TRUE;
1242 config.build_constructors = TRUE;
1243 config.magic_demand_paged = FALSE;
1244 config.text_read_only = FALSE;
1245 input_flags.dynamic = FALSE;
1246 break;
1247 case 'u':
1248 ldlang_add_undef (optarg, TRUE);
1249 break;
1250 case OPTION_UNIQUE:
1251 if (optarg != NULL)
1252 lang_add_unique (optarg);
1253 else
1254 config.unique_orphan_sections = TRUE;
1255 break;
1256 case OPTION_VERBOSE:
1257 ldversion (1);
1258 version_printed = TRUE;
1259 verbose = TRUE;
1260 overflow_cutoff_limit = -2;
1261 if (optarg != NULL)
1262 {
1263 char *end;
1264 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1265 if (*end)
1266 einfo (_("%P%F: invalid number `%s'\n"), optarg);
1267 #ifdef ENABLE_PLUGINS
1268 report_plugin_symbols = level > 1;
1269 #endif /* ENABLE_PLUGINS */
1270 }
1271 break;
1272 case 'v':
1273 ldversion (0);
1274 version_printed = TRUE;
1275 break;
1276 case 'V':
1277 ldversion (1);
1278 version_printed = TRUE;
1279 break;
1280 case OPTION_VERSION:
1281 ldversion (2);
1282 xexit (0);
1283 break;
1284 case OPTION_VERSION_SCRIPT:
1285 /* This option indicates a small script that only specifies
1286 version information. Read it, but don't assume that
1287 we've seen a linker script. */
1288 {
1289 FILE *hold_script_handle;
1290
1291 hold_script_handle = saved_script_handle;
1292 ldfile_open_command_file (optarg);
1293 saved_script_handle = hold_script_handle;
1294 parser_input = input_version_script;
1295 yyparse ();
1296 }
1297 break;
1298 case OPTION_VERSION_EXPORTS_SECTION:
1299 /* This option records a version symbol to be applied to the
1300 symbols listed for export to be found in the object files
1301 .exports sections. */
1302 command_line.version_exports_section = optarg;
1303 break;
1304 case OPTION_DYNAMIC_LIST_DATA:
1305 command_line.dynamic_list = dynamic_list_data;
1306 if (command_line.symbolic == symbolic)
1307 command_line.symbolic = symbolic_unset;
1308 break;
1309 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1310 lang_append_dynamic_list_cpp_typeinfo ();
1311 if (command_line.dynamic_list != dynamic_list_data)
1312 command_line.dynamic_list = dynamic_list;
1313 if (command_line.symbolic == symbolic)
1314 command_line.symbolic = symbolic_unset;
1315 break;
1316 case OPTION_DYNAMIC_LIST_CPP_NEW:
1317 lang_append_dynamic_list_cpp_new ();
1318 if (command_line.dynamic_list != dynamic_list_data)
1319 command_line.dynamic_list = dynamic_list;
1320 if (command_line.symbolic == symbolic)
1321 command_line.symbolic = symbolic_unset;
1322 break;
1323 case OPTION_DYNAMIC_LIST:
1324 /* This option indicates a small script that only specifies
1325 a dynamic list. Read it, but don't assume that we've
1326 seen a linker script. */
1327 {
1328 FILE *hold_script_handle;
1329
1330 hold_script_handle = saved_script_handle;
1331 ldfile_open_command_file (optarg);
1332 saved_script_handle = hold_script_handle;
1333 parser_input = input_dynamic_list;
1334 yyparse ();
1335 }
1336 if (command_line.dynamic_list != dynamic_list_data)
1337 command_line.dynamic_list = dynamic_list;
1338 if (command_line.symbolic == symbolic)
1339 command_line.symbolic = symbolic_unset;
1340 break;
1341 case OPTION_WARN_COMMON:
1342 config.warn_common = TRUE;
1343 break;
1344 case OPTION_WARN_CONSTRUCTORS:
1345 config.warn_constructors = TRUE;
1346 break;
1347 case OPTION_WARN_FATAL:
1348 config.fatal_warnings = TRUE;
1349 break;
1350 case OPTION_NO_WARN_FATAL:
1351 config.fatal_warnings = FALSE;
1352 break;
1353 case OPTION_WARN_MULTIPLE_GP:
1354 config.warn_multiple_gp = TRUE;
1355 break;
1356 case OPTION_WARN_ONCE:
1357 config.warn_once = TRUE;
1358 break;
1359 case OPTION_WARN_SECTION_ALIGN:
1360 config.warn_section_align = TRUE;
1361 break;
1362 case OPTION_WARN_SHARED_TEXTREL:
1363 link_info.warn_shared_textrel = TRUE;
1364 break;
1365 case OPTION_WARN_ALTERNATE_EM:
1366 link_info.warn_alternate_em = TRUE;
1367 break;
1368 case OPTION_WHOLE_ARCHIVE:
1369 input_flags.whole_archive = TRUE;
1370 break;
1371 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1372 input_flags.add_DT_NEEDED_for_dynamic = TRUE;
1373 break;
1374 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1375 input_flags.add_DT_NEEDED_for_dynamic = FALSE;
1376 break;
1377 case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1378 input_flags.add_DT_NEEDED_for_regular = TRUE;
1379 break;
1380 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1381 input_flags.add_DT_NEEDED_for_regular = FALSE;
1382 break;
1383 case OPTION_WRAP:
1384 add_wrap (optarg);
1385 break;
1386 case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1387 add_ignoresym (&link_info, optarg);
1388 break;
1389 case OPTION_DISCARD_NONE:
1390 link_info.discard = discard_none;
1391 break;
1392 case 'X':
1393 link_info.discard = discard_l;
1394 break;
1395 case 'x':
1396 link_info.discard = discard_all;
1397 break;
1398 case 'Y':
1399 if (CONST_STRNEQ (optarg, "P,"))
1400 optarg += 2;
1401 if (default_dirlist != NULL)
1402 free (default_dirlist);
1403 default_dirlist = xstrdup (optarg);
1404 break;
1405 case 'y':
1406 add_ysym (optarg);
1407 break;
1408 case OPTION_SPARE_DYNAMIC_TAGS:
1409 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1410 break;
1411 case OPTION_SPLIT_BY_RELOC:
1412 if (optarg != NULL)
1413 config.split_by_reloc = strtoul (optarg, NULL, 0);
1414 else
1415 config.split_by_reloc = 32768;
1416 break;
1417 case OPTION_SPLIT_BY_FILE:
1418 if (optarg != NULL)
1419 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1420 else
1421 config.split_by_file = 1;
1422 break;
1423 case OPTION_CHECK_SECTIONS:
1424 command_line.check_section_addresses = 1;
1425 break;
1426 case OPTION_NO_CHECK_SECTIONS:
1427 command_line.check_section_addresses = 0;
1428 break;
1429 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1430 command_line.accept_unknown_input_arch = TRUE;
1431 break;
1432 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1433 command_line.accept_unknown_input_arch = FALSE;
1434 break;
1435 case '(':
1436 lang_enter_group ();
1437 ingroup++;
1438 break;
1439 case ')':
1440 if (! ingroup)
1441 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1442
1443 lang_leave_group ();
1444 ingroup--;
1445 break;
1446
1447 case OPTION_INIT:
1448 link_info.init_function = optarg;
1449 break;
1450
1451 case OPTION_FINI:
1452 link_info.fini_function = optarg;
1453 break;
1454
1455 case OPTION_REDUCE_MEMORY_OVERHEADS:
1456 link_info.reduce_memory_overheads = TRUE;
1457 if (config.hash_table_size == 0)
1458 config.hash_table_size = 1021;
1459 break;
1460
1461 case OPTION_HASH_SIZE:
1462 {
1463 bfd_size_type new_size;
1464
1465 new_size = strtoul (optarg, NULL, 0);
1466 if (new_size)
1467 config.hash_table_size = new_size;
1468 else
1469 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1470 }
1471 break;
1472
1473 case OPTION_PUSH_STATE:
1474 input_flags.pushed = xmemdup (&input_flags,
1475 sizeof (input_flags),
1476 sizeof (input_flags));
1477 break;
1478
1479 case OPTION_POP_STATE:
1480 if (input_flags.pushed == NULL)
1481 einfo (_("%P%F: no state pushed before popping\n"));
1482 else
1483 {
1484 struct lang_input_statement_flags *oldp = input_flags.pushed;
1485 memcpy (&input_flags, oldp, sizeof (input_flags));
1486 free (oldp);
1487 }
1488 break;
1489
1490 case OPTION_WARN_POISON_SYSTEM_DIRECTORIES:
1491 command_line.warn_poison_system_directories = TRUE;
1492 break;
1493
1494 case OPTION_NO_WARN_POISON_SYSTEM_DIRECTORIES:
1495 command_line.warn_poison_system_directories = FALSE;
1496 break;
1497
1498 case OPTION_ERROR_POISON_SYSTEM_DIRECTORIES:
1499 command_line.error_poison_system_directories = TRUE;
1500 break;
1501 }
1502 }
1503
1504 if (command_line.soname && command_line.soname[0] == '\0')
1505 {
1506 einfo (_("%P: SONAME must not be empty string; ignored\n"));
1507 command_line.soname = NULL;
1508 }
1509
1510 while (ingroup)
1511 {
1512 lang_leave_group ();
1513 ingroup--;
1514 }
1515
1516 if (default_dirlist != NULL)
1517 {
1518 set_default_dirlist (default_dirlist);
1519 free (default_dirlist);
1520 }
1521
1522 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1523 /* FIXME: Should we allow emulations a chance to set this ? */
1524 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1525
1526 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1527 /* FIXME: Should we allow emulations a chance to set this ? */
1528 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1529
1530 if (link_info.relocatable)
1531 {
1532 if (command_line.check_section_addresses < 0)
1533 command_line.check_section_addresses = 0;
1534 if (link_info.shared)
1535 einfo (_("%P%F: -r and -shared may not be used together\n"));
1536 }
1537
1538 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1539 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1540 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
1541 for shared libraries. -Bsymbolic overrides all others and vice
1542 versa. */
1543 switch (command_line.symbolic)
1544 {
1545 case symbolic_unset:
1546 break;
1547 case symbolic:
1548 /* -Bsymbolic is for shared library only. */
1549 if (link_info.shared)
1550 {
1551 link_info.symbolic = TRUE;
1552 /* Should we free the unused memory? */
1553 link_info.dynamic_list = NULL;
1554 command_line.dynamic_list = dynamic_list_unset;
1555 }
1556 break;
1557 case symbolic_functions:
1558 /* -Bsymbolic-functions is for shared library only. */
1559 if (link_info.shared)
1560 command_line.dynamic_list = dynamic_list_data;
1561 break;
1562 }
1563
1564 switch (command_line.dynamic_list)
1565 {
1566 case dynamic_list_unset:
1567 break;
1568 case dynamic_list_data:
1569 link_info.dynamic_data = TRUE;
1570 case dynamic_list:
1571 link_info.dynamic = TRUE;
1572 break;
1573 }
1574
1575 if (! link_info.shared)
1576 {
1577 if (command_line.filter_shlib)
1578 einfo (_("%P%F: -F may not be used without -shared\n"));
1579 if (command_line.auxiliary_filters)
1580 einfo (_("%P%F: -f may not be used without -shared\n"));
1581 }
1582
1583 if (! link_info.shared || link_info.pie)
1584 link_info.executable = TRUE;
1585
1586 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
1587 don't see how else this can be handled, since in this case we
1588 must preserve all externally visible symbols. */
1589 if (link_info.relocatable && link_info.strip == strip_all)
1590 {
1591 link_info.strip = strip_debugger;
1592 if (link_info.discard == discard_sec_merge)
1593 link_info.discard = discard_all;
1594 }
1595 }
1596
1597 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1598 library search path. */
1599
1600 static void
set_default_dirlist(char * dirlist_ptr)1601 set_default_dirlist (char *dirlist_ptr)
1602 {
1603 char *p;
1604
1605 while (1)
1606 {
1607 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1608 if (p != NULL)
1609 *p = '\0';
1610 if (*dirlist_ptr != '\0')
1611 ldfile_add_library_path (dirlist_ptr, TRUE);
1612 if (p == NULL)
1613 break;
1614 dirlist_ptr = p + 1;
1615 }
1616 }
1617
1618 static void
set_section_start(char * sect,char * valstr)1619 set_section_start (char *sect, char *valstr)
1620 {
1621 const char *end;
1622 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1623 if (*end)
1624 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1625 lang_section_start (sect, exp_intop (val), NULL);
1626 }
1627
1628 static void
set_segment_start(const char * section,char * valstr)1629 set_segment_start (const char *section, char *valstr)
1630 {
1631 const char *name;
1632 const char *end;
1633 segment_type *seg;
1634
1635 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1636 if (*end)
1637 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1638 /* If we already have an entry for this segment, update the existing
1639 value. */
1640 name = section + 1;
1641 for (seg = segments; seg; seg = seg->next)
1642 if (strcmp (seg->name, name) == 0)
1643 {
1644 seg->value = val;
1645 return;
1646 }
1647 /* There was no existing value so we must create a new segment
1648 entry. */
1649 seg = (segment_type *) stat_alloc (sizeof (*seg));
1650 seg->name = name;
1651 seg->value = val;
1652 seg->used = FALSE;
1653 /* Add it to the linked list of segments. */
1654 seg->next = segments;
1655 segments = seg;
1656 /* Historically, -Ttext and friends set the base address of a
1657 particular section. For backwards compatibility, we still do
1658 that. If a SEGMENT_START directive is seen, the section address
1659 assignment will be disabled. */
1660 lang_section_start (section, exp_intop (val), seg);
1661 }
1662
1663
1664 /* Print help messages for the options. */
1665
1666 static void
help(void)1667 help (void)
1668 {
1669 unsigned i;
1670 const char **targets, **pp;
1671 int len;
1672
1673 printf (_("Usage: %s [options] file...\n"), program_name);
1674
1675 printf (_("Options:\n"));
1676 for (i = 0; i < OPTION_COUNT; i++)
1677 {
1678 if (ld_options[i].doc != NULL)
1679 {
1680 bfd_boolean comma;
1681 unsigned j;
1682
1683 printf (" ");
1684
1685 comma = FALSE;
1686 len = 2;
1687
1688 j = i;
1689 do
1690 {
1691 if (ld_options[j].shortopt != '\0'
1692 && ld_options[j].control != NO_HELP)
1693 {
1694 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1695 len += (comma ? 2 : 0) + 2;
1696 if (ld_options[j].arg != NULL)
1697 {
1698 if (ld_options[j].opt.has_arg != optional_argument)
1699 {
1700 printf (" ");
1701 ++len;
1702 }
1703 printf ("%s", _(ld_options[j].arg));
1704 len += strlen (_(ld_options[j].arg));
1705 }
1706 comma = TRUE;
1707 }
1708 ++j;
1709 }
1710 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1711
1712 j = i;
1713 do
1714 {
1715 if (ld_options[j].opt.name != NULL
1716 && ld_options[j].control != NO_HELP)
1717 {
1718 int two_dashes =
1719 (ld_options[j].control == TWO_DASHES
1720 || ld_options[j].control == EXACTLY_TWO_DASHES);
1721
1722 printf ("%s-%s%s",
1723 comma ? ", " : "",
1724 two_dashes ? "-" : "",
1725 ld_options[j].opt.name);
1726 len += ((comma ? 2 : 0)
1727 + 1
1728 + (two_dashes ? 1 : 0)
1729 + strlen (ld_options[j].opt.name));
1730 if (ld_options[j].arg != NULL)
1731 {
1732 printf (" %s", _(ld_options[j].arg));
1733 len += 1 + strlen (_(ld_options[j].arg));
1734 }
1735 comma = TRUE;
1736 }
1737 ++j;
1738 }
1739 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1740
1741 if (len >= 30)
1742 {
1743 printf ("\n");
1744 len = 0;
1745 }
1746
1747 for (; len < 30; len++)
1748 putchar (' ');
1749
1750 printf ("%s\n", _(ld_options[i].doc));
1751 }
1752 }
1753 printf (_(" @FILE"));
1754 for (len = strlen (" @FILE"); len < 30; len++)
1755 putchar (' ');
1756 printf (_("Read options from FILE\n"));
1757
1758 /* Note: Various tools (such as libtool) depend upon the
1759 format of the listings below - do not change them. */
1760 /* xgettext:c-format */
1761 printf (_("%s: supported targets:"), program_name);
1762 targets = bfd_target_list ();
1763 for (pp = targets; *pp != NULL; pp++)
1764 printf (" %s", *pp);
1765 free (targets);
1766 printf ("\n");
1767
1768 /* xgettext:c-format */
1769 printf (_("%s: supported emulations: "), program_name);
1770 ldemul_list_emulations (stdout);
1771 printf ("\n");
1772
1773 /* xgettext:c-format */
1774 printf (_("%s: emulation specific options:\n"), program_name);
1775 ldemul_list_emulation_options (stdout);
1776 printf ("\n");
1777
1778 if (REPORT_BUGS_TO[0])
1779 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1780 }
1781