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bae7f79e ILT |
1 | // options.c -- handle command line options for gold |
2 | ||
e5756efb | 3 | // Copyright 2006, 2007, 2008 Free Software Foundation, Inc. |
6cb15b7f ILT |
4 | // Written by Ian Lance Taylor <iant@google.com>. |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
ad2d6943 ILT |
23 | #include "gold.h" |
24 | ||
a2b1aa12 | 25 | #include <cstdlib> |
bae7f79e | 26 | #include <iostream> |
ad2d6943 ILT |
27 | #include <sys/stat.h> |
28 | #include "filenames.h" | |
29 | #include "libiberty.h" | |
bae7f79e | 30 | |
c7912668 | 31 | #include "debug.h" |
e5756efb | 32 | #include "script.h" |
bae7f79e ILT |
33 | #include "options.h" |
34 | ||
61ba1cf9 ILT |
35 | namespace gold |
36 | { | |
37 | ||
bae7f79e ILT |
38 | // The information we keep for a single command line option. |
39 | ||
61ba1cf9 | 40 | struct options::One_option |
bae7f79e ILT |
41 | { |
42 | // The single character option name, or '\0' if this is only a long | |
43 | // option. | |
44 | char short_option; | |
45 | ||
46 | // The long option name, or NULL if this is only a short option. | |
47 | const char* long_option; | |
48 | ||
49 | // Description of the option for --help output, or NULL if there is none. | |
50 | const char* doc; | |
51 | ||
52 | // How to print the option name in --help output, or NULL to use the | |
53 | // default. | |
54 | const char* help_output; | |
55 | ||
56 | // Long option dash control. This is ignored if long_option is | |
57 | // NULL. | |
58 | enum | |
59 | { | |
60 | // Long option normally takes one dash; two dashes are also | |
61 | // accepted. | |
62 | ONE_DASH, | |
63 | // Long option normally takes two dashes; one dash is also | |
64 | // accepted. | |
65 | TWO_DASHES, | |
66 | // Long option always takes two dashes. | |
67 | EXACTLY_TWO_DASHES | |
68 | } dash; | |
69 | ||
70 | // Function for special handling, or NULL. Returns the number of | |
71 | // arguments to skip. This will normally be at least 1, but it may | |
72 | // be 0 if this function changes *argv. ARG points to the location | |
73 | // in *ARGV where the option starts, which may be helpful for a | |
74 | // short option. | |
3c2fafa5 ILT |
75 | int (*special)(int argc, char** argv, char *arg, bool long_option, |
76 | Command_line*); | |
bae7f79e ILT |
77 | |
78 | // If this is a position independent option which does not take an | |
45aa233b ILT |
79 | // argument, this is the member function to call to record it. (In |
80 | // this file, the bool will always be 'true' to indicate the option | |
81 | // is set.) | |
82 | void (General_options::*general_noarg)(bool); | |
bae7f79e ILT |
83 | |
84 | // If this is a position independent function which takes an | |
85 | // argument, this is the member function to call to record it. | |
61ba1cf9 | 86 | void (General_options::*general_arg)(const char*); |
bae7f79e ILT |
87 | |
88 | // If this is a position dependent option which does not take an | |
45aa233b ILT |
89 | // argument, this is the member function to call to record it. (In |
90 | // this file, the bool will always be 'true' to indicate the option | |
91 | // is set.) | |
92 | void (Position_dependent_options::*dependent_noarg)(bool); | |
bae7f79e ILT |
93 | |
94 | // If this is a position dependent option which takes an argument, | |
95 | // this is the member function to record it. | |
61ba1cf9 | 96 | void (Position_dependent_options::*dependent_arg)(const char*); |
bae7f79e ILT |
97 | |
98 | // Return whether this option takes an argument. | |
99 | bool | |
100 | takes_argument() const | |
101 | { return this->general_arg != NULL || this->dependent_arg != NULL; } | |
102 | }; | |
103 | ||
35cdfc9a ILT |
104 | // We have a separate table for -z options. |
105 | ||
106 | struct options::One_z_option | |
107 | { | |
108 | // The name of the option. | |
109 | const char* name; | |
110 | ||
cd72c291 ILT |
111 | // The member function in General_options called to record an option |
112 | // which does not take an argument. | |
113 | void (General_options::*set_noarg)(bool); | |
114 | ||
115 | // The member function in General_options called to record an option | |
116 | // which does take an argument. | |
117 | void (General_options::*set_arg)(const char*); | |
35cdfc9a ILT |
118 | }; |
119 | ||
c7912668 ILT |
120 | // We have a separate table for --debug options. |
121 | ||
122 | struct options::One_debug_option | |
123 | { | |
124 | // The name of the option. | |
125 | const char* name; | |
126 | ||
127 | // The flags to turn on. | |
128 | unsigned int debug_flags; | |
129 | }; | |
130 | ||
61ba1cf9 | 131 | class options::Command_line_options |
bae7f79e ILT |
132 | { |
133 | public: | |
134 | static const One_option options[]; | |
135 | static const int options_size; | |
35cdfc9a ILT |
136 | static const One_z_option z_options[]; |
137 | static const int z_options_size; | |
c7912668 ILT |
138 | static const One_debug_option debug_options[]; |
139 | static const int debug_options_size; | |
bae7f79e ILT |
140 | }; |
141 | ||
61ba1cf9 ILT |
142 | } // End namespace gold. |
143 | ||
bae7f79e ILT |
144 | namespace |
145 | { | |
146 | ||
bc644c6c ILT |
147 | // Recognize input and output target names. The GNU linker accepts |
148 | // these with --format and --oformat. This code is intended to be | |
149 | // minimally compatible. In practice for an ELF target this would be | |
150 | // the same target as the input files; that name always start with | |
151 | // "elf". Non-ELF targets would be "srec", "symbolsrec", "tekhex", | |
0daa6f62 ILT |
152 | // "binary", "ihex". See also |
153 | // General_options::default_target_settings. | |
bc644c6c ILT |
154 | |
155 | gold::General_options::Object_format | |
156 | string_to_object_format(const char* arg) | |
157 | { | |
158 | if (strncmp(arg, "elf", 3) == 0) | |
159 | return gold::General_options::OBJECT_FORMAT_ELF; | |
160 | else if (strcmp(arg, "binary") == 0) | |
161 | return gold::General_options::OBJECT_FORMAT_BINARY; | |
162 | else | |
163 | { | |
164 | gold::gold_error(_("format '%s' not supported " | |
165 | "(supported formats: elf, binary)"), | |
166 | arg); | |
167 | return gold::General_options::OBJECT_FORMAT_ELF; | |
168 | } | |
169 | } | |
170 | ||
a5dc0706 ILT |
171 | // Handle the special -defsym option, which defines a symbol. |
172 | ||
173 | int | |
174 | add_to_defsym(int argc, char** argv, char* arg, bool long_option, | |
175 | gold::Command_line* cmdline) | |
176 | { | |
177 | int ret; | |
178 | const char* val = cmdline->get_special_argument("defsym", argc, argv, arg, | |
179 | long_option, &ret); | |
180 | cmdline->script_options().define_symbol(val); | |
181 | return ret; | |
182 | } | |
183 | ||
61ba1cf9 ILT |
184 | // Handle the special -l option, which adds an input file. |
185 | ||
186 | int | |
3c2fafa5 ILT |
187 | library(int argc, char** argv, char* arg, bool long_option, |
188 | gold::Command_line* cmdline) | |
61ba1cf9 | 189 | { |
3c2fafa5 ILT |
190 | return cmdline->process_l_option(argc, argv, arg, long_option); |
191 | } | |
192 | ||
88dd47ac ILT |
193 | // Handle the -R option. Historically the GNU linker made -R a |
194 | // synonym for --just-symbols. ELF linkers have traditionally made -R | |
195 | // a synonym for -rpath. When ELF support was added to the GNU | |
196 | // linker, -R was changed to switch based on the argument: if the | |
197 | // argument is an ordinary file, we treat it as --just-symbols, | |
198 | // otherwise we treat it as -rpath. We need to be compatible with | |
199 | // this, because existing build scripts rely on it. | |
200 | ||
201 | int | |
202 | handle_r_option(int argc, char** argv, char* arg, bool long_option, | |
203 | gold::Command_line* cmdline) | |
204 | { | |
205 | int ret; | |
206 | const char* val = cmdline->get_special_argument("R", argc, argv, arg, | |
207 | long_option, &ret); | |
208 | struct stat s; | |
209 | if (::stat(val, &s) != 0 || S_ISDIR(s.st_mode)) | |
210 | cmdline->add_to_rpath(val); | |
211 | else | |
212 | cmdline->add_just_symbols_file(val); | |
213 | return ret; | |
214 | } | |
215 | ||
216 | // Handle the --just-symbols option. | |
217 | ||
218 | int | |
219 | handle_just_symbols_option(int argc, char** argv, char* arg, | |
220 | bool long_option, gold::Command_line* cmdline) | |
221 | { | |
222 | int ret; | |
223 | const char* val = cmdline->get_special_argument("just-symbols", argc, argv, | |
224 | arg, long_option, &ret); | |
225 | cmdline->add_just_symbols_file(val); | |
226 | return ret; | |
227 | } | |
228 | ||
3c2fafa5 ILT |
229 | // Handle the special -T/--script option, which reads a linker script. |
230 | ||
231 | int | |
232 | invoke_script(int argc, char** argv, char* arg, bool long_option, | |
233 | gold::Command_line* cmdline) | |
234 | { | |
235 | int ret; | |
236 | const char* script_name = cmdline->get_special_argument("script", argc, argv, | |
237 | arg, long_option, | |
238 | &ret); | |
239 | if (!read_commandline_script(script_name, cmdline)) | |
09124467 ILT |
240 | gold::gold_fatal(_("unable to parse script file %s"), script_name); |
241 | return ret; | |
242 | } | |
243 | ||
244 | // Handle the special --version-script option, which reads a version script. | |
245 | ||
246 | int | |
247 | invoke_version_script(int argc, char** argv, char* arg, bool long_option, | |
248 | gold::Command_line* cmdline) | |
249 | { | |
250 | int ret; | |
251 | const char* script_name = cmdline->get_special_argument("version-script", | |
252 | argc, argv, | |
253 | arg, long_option, | |
254 | &ret); | |
255 | if (!read_version_script(script_name, cmdline)) | |
256 | gold::gold_fatal(_("unable to parse version script file %s"), script_name); | |
3c2fafa5 | 257 | return ret; |
61ba1cf9 ILT |
258 | } |
259 | ||
ead1e424 ILT |
260 | // Handle the special --start-group option. |
261 | ||
262 | int | |
3c2fafa5 | 263 | start_group(int, char**, char* arg, bool, gold::Command_line* cmdline) |
ead1e424 ILT |
264 | { |
265 | cmdline->start_group(arg); | |
266 | return 1; | |
267 | } | |
268 | ||
269 | // Handle the special --end-group option. | |
270 | ||
271 | int | |
3c2fafa5 | 272 | end_group(int, char**, char* arg, bool, gold::Command_line* cmdline) |
ead1e424 ILT |
273 | { |
274 | cmdline->end_group(arg); | |
275 | return 1; | |
276 | } | |
277 | ||
bae7f79e ILT |
278 | // Report usage information for ld --help, and exit. |
279 | ||
280 | int | |
3c2fafa5 | 281 | help(int, char**, char*, bool, gold::Command_line*) |
bae7f79e ILT |
282 | { |
283 | printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name); | |
284 | ||
285 | const int options_size = gold::options::Command_line_options::options_size; | |
286 | const gold::options::One_option* options = | |
287 | gold::options::Command_line_options::options; | |
288 | for (int i = 0; i < options_size; ++i) | |
289 | { | |
290 | if (options[i].doc == NULL) | |
291 | continue; | |
292 | ||
293 | printf(" "); | |
294 | int len = 2; | |
295 | bool comma = false; | |
296 | ||
297 | int j = i; | |
298 | do | |
299 | { | |
300 | if (options[j].help_output != NULL) | |
301 | { | |
302 | if (comma) | |
303 | { | |
304 | printf(", "); | |
305 | len += 2; | |
306 | } | |
307 | printf(options[j].help_output); | |
88dd47ac | 308 | len += std::strlen(options[j].help_output); |
a6badf5a | 309 | comma = true; |
bae7f79e ILT |
310 | } |
311 | else | |
312 | { | |
313 | if (options[j].short_option != '\0') | |
314 | { | |
315 | if (comma) | |
316 | { | |
317 | printf(", "); | |
318 | len += 2; | |
319 | } | |
320 | printf("-%c", options[j].short_option); | |
321 | len += 2; | |
a6badf5a | 322 | comma = true; |
bae7f79e ILT |
323 | } |
324 | ||
325 | if (options[j].long_option != NULL) | |
326 | { | |
327 | if (comma) | |
328 | { | |
329 | printf(", "); | |
330 | len += 2; | |
331 | } | |
332 | if (options[j].dash == gold::options::One_option::ONE_DASH) | |
333 | { | |
334 | printf("-"); | |
335 | ++len; | |
336 | } | |
337 | else | |
338 | { | |
339 | printf("--"); | |
340 | len += 2; | |
341 | } | |
342 | printf("%s", options[j].long_option); | |
343 | len += std::strlen(options[j].long_option); | |
a6badf5a | 344 | comma = true; |
bae7f79e ILT |
345 | } |
346 | } | |
347 | ++j; | |
348 | } | |
349 | while (j < options_size && options[j].doc == NULL); | |
350 | ||
a6badf5a | 351 | if (len >= 30) |
bae7f79e ILT |
352 | { |
353 | printf("\n"); | |
354 | len = 0; | |
355 | } | |
356 | for (; len < 30; ++len) | |
357 | std::putchar(' '); | |
358 | ||
359 | std::puts(options[i].doc); | |
360 | } | |
361 | ||
c7912668 | 362 | ::exit(EXIT_SUCCESS); |
bae7f79e ILT |
363 | |
364 | return 0; | |
365 | } | |
366 | ||
8486ee48 ILT |
367 | // Report version information. |
368 | ||
369 | int | |
3c2fafa5 | 370 | version(int, char**, char* opt, bool, gold::Command_line*) |
8486ee48 ILT |
371 | { |
372 | gold::print_version(opt[0] == 'v' && opt[1] == '\0'); | |
c7912668 | 373 | ::exit(EXIT_SUCCESS); |
8486ee48 ILT |
374 | return 0; |
375 | } | |
376 | ||
ad2d6943 ILT |
377 | // If the default sysroot is relocatable, try relocating it based on |
378 | // the prefix FROM. | |
379 | ||
380 | char* | |
381 | get_relative_sysroot(const char* from) | |
382 | { | |
383 | char* path = make_relative_prefix(gold::program_name, from, | |
384 | TARGET_SYSTEM_ROOT); | |
385 | if (path != NULL) | |
386 | { | |
387 | struct stat s; | |
388 | if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode)) | |
389 | return path; | |
390 | free(path); | |
391 | } | |
392 | ||
393 | return NULL; | |
394 | } | |
395 | ||
396 | // Return the default sysroot. This is set by the --with-sysroot | |
397 | // option to configure. | |
398 | ||
399 | std::string | |
400 | get_default_sysroot() | |
401 | { | |
402 | const char* sysroot = TARGET_SYSTEM_ROOT; | |
403 | if (*sysroot == '\0') | |
404 | return ""; | |
405 | ||
406 | if (TARGET_SYSTEM_ROOT_RELOCATABLE) | |
407 | { | |
408 | char* path = get_relative_sysroot (BINDIR); | |
409 | if (path == NULL) | |
410 | path = get_relative_sysroot (TOOLBINDIR); | |
411 | if (path != NULL) | |
412 | { | |
413 | std::string ret = path; | |
414 | free(path); | |
415 | return ret; | |
416 | } | |
417 | } | |
418 | ||
419 | return sysroot; | |
420 | } | |
421 | ||
61ba1cf9 ILT |
422 | } // End anonymous namespace. |
423 | ||
424 | namespace gold | |
425 | { | |
bae7f79e ILT |
426 | |
427 | // Helper macros used to specify the options. We could also do this | |
428 | // using constructors, but then g++ would generate code to initialize | |
429 | // the array. We want the array to be initialized statically so that | |
430 | // we get better startup time. | |
431 | ||
432 | #define GENERAL_NOARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 433 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
434 | NULL, func, NULL, NULL, NULL } |
435 | #define GENERAL_ARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 436 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
437 | NULL, NULL, func, NULL, NULL } |
438 | #define POSDEP_NOARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 439 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
440 | NULL, NULL, NULL, func, NULL } |
441 | #define POSDEP_ARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 442 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
443 | NULL, NULL, NULL, NULL, func } |
444 | #define SPECIAL(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 445 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
446 | func, NULL, NULL, NULL, NULL } |
447 | ||
448 | // Here is the actual list of options which we accept. | |
449 | ||
61ba1cf9 ILT |
450 | const options::One_option |
451 | options::Command_line_options::options[] = | |
bae7f79e | 452 | { |
e2827e5f ILT |
453 | GENERAL_NOARG('\0', "allow-shlib-undefined", |
454 | N_("Allow unresolved references in shared libraries"), | |
455 | NULL, TWO_DASHES, | |
456 | &General_options::set_allow_shlib_undefined), | |
457 | GENERAL_NOARG('\0', "no-allow-shlib-undefined", | |
458 | N_("Do not allow unresolved references in shared libraries"), | |
459 | NULL, TWO_DASHES, | |
460 | &General_options::set_no_allow_shlib_undefined), | |
0c5e9c22 ILT |
461 | POSDEP_NOARG('\0', "as-needed", |
462 | N_("Only set DT_NEEDED for dynamic libs if used"), | |
463 | NULL, TWO_DASHES, &Position_dependent_options::set_as_needed), | |
464 | POSDEP_NOARG('\0', "no-as-needed", | |
465 | N_("Always DT_NEEDED for dynamic libs (default)"), | |
45aa233b | 466 | NULL, TWO_DASHES, &Position_dependent_options::set_no_as_needed), |
61611222 ILT |
467 | POSDEP_NOARG('\0', "Bdynamic", |
468 | N_("-l searches for shared libraries"), | |
469 | NULL, ONE_DASH, | |
45aa233b | 470 | &Position_dependent_options::set_Bdynamic), |
61611222 ILT |
471 | POSDEP_NOARG('\0', "Bstatic", |
472 | N_("-l does not search for shared libraries"), | |
473 | NULL, ONE_DASH, | |
45aa233b | 474 | &Position_dependent_options::set_Bstatic), |
51b08ebe | 475 | GENERAL_NOARG('\0', "Bsymbolic", N_("Bind defined symbols locally"), |
45aa233b | 476 | NULL, ONE_DASH, &General_options::set_Bsymbolic), |
bc644c6c ILT |
477 | POSDEP_ARG('b', "format", N_("Set input format (elf, binary)"), |
478 | N_("-b FORMAT, --format FORMAT"), TWO_DASHES, | |
45aa233b | 479 | &Position_dependent_options::set_format), |
9a0910c3 ILT |
480 | #ifdef HAVE_ZLIB_H |
481 | # define ZLIB_STR ",zlib" | |
482 | #else | |
483 | # define ZLIB_STR "" | |
484 | #endif | |
485 | GENERAL_ARG('\0', "compress-debug-sections", | |
486 | N_("Compress .debug_* sections in the output file " | |
487 | "(default is none)"), | |
488 | N_("--compress-debug-sections=[none" ZLIB_STR "]"), | |
489 | TWO_DASHES, | |
bc2c67ff | 490 | &General_options::set_compress_debug_sections), |
0dfbdef4 ILT |
491 | GENERAL_NOARG('d', "define-common", N_("Define common symbols"), |
492 | NULL, TWO_DASHES, &General_options::set_define_common), | |
493 | GENERAL_NOARG('\0', "dc", NULL, NULL, ONE_DASH, | |
494 | &General_options::set_define_common), | |
495 | GENERAL_NOARG('\0', "dp", NULL, NULL, ONE_DASH, | |
496 | &General_options::set_define_common), | |
497 | GENERAL_NOARG('\0', "no-define-common", N_("Do not define common symbols"), | |
498 | NULL, TWO_DASHES, &General_options::set_no_define_common), | |
a5dc0706 ILT |
499 | SPECIAL('\0', "defsym", N_("Define a symbol"), |
500 | N_("--defsym SYMBOL=EXPRESSION"), TWO_DASHES, | |
501 | &add_to_defsym), | |
a2b1aa12 ILT |
502 | GENERAL_NOARG('\0', "demangle", N_("Demangle C++ symbols in log messages"), |
503 | NULL, TWO_DASHES, &General_options::set_demangle), | |
504 | GENERAL_NOARG('\0', "no-demangle", | |
505 | N_("Do not demangle C++ symbols in log messages"), | |
45aa233b | 506 | NULL, TWO_DASHES, &General_options::set_no_demangle), |
a55ce7fe ILT |
507 | GENERAL_NOARG('\0', "detect-odr-violations", |
508 | N_("Try to detect violations of the One Definition Rule"), | |
509 | NULL, TWO_DASHES, &General_options::set_detect_odr_violations), | |
d391083d ILT |
510 | GENERAL_ARG('e', "entry", N_("Set program start address"), |
511 | N_("-e ADDRESS, --entry ADDRESS"), TWO_DASHES, | |
512 | &General_options::set_entry), | |
a6badf5a ILT |
513 | GENERAL_NOARG('E', "export-dynamic", N_("Export all dynamic symbols"), |
514 | NULL, TWO_DASHES, &General_options::set_export_dynamic), | |
0c5e9c22 | 515 | GENERAL_NOARG('\0', "eh-frame-hdr", N_("Create exception frame header"), |
45aa233b | 516 | NULL, TWO_DASHES, &General_options::set_eh_frame_hdr), |
fced7afd | 517 | GENERAL_ARG('h', "soname", N_("Set shared library name"), |
d391083d | 518 | N_("-h FILENAME, -soname FILENAME"), ONE_DASH, |
fced7afd | 519 | &General_options::set_soname), |
dbe717ef ILT |
520 | GENERAL_ARG('I', "dynamic-linker", N_("Set dynamic linker path"), |
521 | N_("-I PROGRAM, --dynamic-linker PROGRAM"), TWO_DASHES, | |
522 | &General_options::set_dynamic_linker), | |
0c5e9c22 ILT |
523 | SPECIAL('l', "library", N_("Search for library LIBNAME"), |
524 | N_("-lLIBNAME, --library LIBNAME"), TWO_DASHES, | |
525 | &library), | |
bae7f79e ILT |
526 | GENERAL_ARG('L', "library-path", N_("Add directory to search path"), |
527 | N_("-L DIR, --library-path DIR"), TWO_DASHES, | |
61ba1cf9 | 528 | &General_options::add_to_search_path), |
652ec9bd ILT |
529 | GENERAL_ARG('m', NULL, N_("Ignored for compatibility"), NULL, ONE_DASH, |
530 | &General_options::ignore), | |
61ba1cf9 ILT |
531 | GENERAL_ARG('o', "output", N_("Set output file name"), |
532 | N_("-o FILE, --output FILE"), TWO_DASHES, | |
45aa233b ILT |
533 | &General_options::set_output), |
534 | GENERAL_ARG('O', "optimize", N_("Optimize output file size"), | |
0c5e9c22 | 535 | N_("-O level"), ONE_DASH, |
45aa233b | 536 | &General_options::set_optimize), |
516cb3d0 ILT |
537 | GENERAL_ARG('\0', "oformat", N_("Set output format (only binary supported)"), |
538 | N_("--oformat FORMAT"), EXACTLY_TWO_DASHES, | |
45aa233b | 539 | &General_options::set_oformat), |
7019cd25 ILT |
540 | GENERAL_NOARG('q', "emit-relocs", N_("Generate relocations in output"), |
541 | NULL, TWO_DASHES, &General_options::set_emit_relocs), | |
45aa233b | 542 | GENERAL_NOARG('r', "relocatable", N_("Generate relocatable output"), NULL, |
7019cd25 | 543 | TWO_DASHES, &General_options::set_relocatable), |
88dd47ac ILT |
544 | // -R really means -rpath, but can mean --just-symbols for |
545 | // compatibility with GNU ld. -rpath is always -rpath, so we list | |
546 | // it separately. | |
547 | SPECIAL('R', NULL, N_("Add DIR to runtime search path"), | |
548 | N_("-R DIR"), ONE_DASH, &handle_r_option), | |
549 | GENERAL_ARG('\0', "rpath", NULL, N_("-rpath DIR"), ONE_DASH, | |
550 | &General_options::add_to_rpath), | |
551 | SPECIAL('\0', "just-symbols", N_("Read only symbol values from file"), | |
552 | N_("-R FILE, --just-symbols FILE"), TWO_DASHES, | |
553 | &handle_just_symbols_option), | |
15b3cfae ILT |
554 | GENERAL_ARG('\0', "rpath-link", |
555 | N_("Add DIR to link time shared library search path"), | |
556 | N_("--rpath-link DIR"), TWO_DASHES, | |
557 | &General_options::add_to_rpath_link), | |
0c5e9c22 ILT |
558 | GENERAL_NOARG('s', "strip-all", N_("Strip all symbols"), NULL, |
559 | TWO_DASHES, &General_options::set_strip_all), | |
02d2ba74 ILT |
560 | GENERAL_NOARG('\0', "strip-debug-gdb", |
561 | N_("Strip debug symbols that are unused by gdb " | |
562 | "(at least versions <= 6.7)"), | |
563 | NULL, TWO_DASHES, &General_options::set_strip_debug_gdb), | |
564 | // This must come after -Sdebug since it's a prefix of it. | |
0c5e9c22 ILT |
565 | GENERAL_NOARG('S', "strip-debug", N_("Strip debugging information"), NULL, |
566 | TWO_DASHES, &General_options::set_strip_debug), | |
92e059d8 ILT |
567 | GENERAL_NOARG('\0', "shared", N_("Generate shared library"), |
568 | NULL, ONE_DASH, &General_options::set_shared), | |
bae7f79e | 569 | GENERAL_NOARG('\0', "static", N_("Do not link against shared libraries"), |
61ba1cf9 | 570 | NULL, ONE_DASH, &General_options::set_static), |
e44fcf3b ILT |
571 | GENERAL_NOARG('\0', "stats", N_("Print resource usage statistics"), |
572 | NULL, TWO_DASHES, &General_options::set_stats), | |
ad2d6943 ILT |
573 | GENERAL_ARG('\0', "sysroot", N_("Set target system root directory"), |
574 | N_("--sysroot DIR"), TWO_DASHES, &General_options::set_sysroot), | |
756ac4a8 ILT |
575 | GENERAL_ARG('\0', "Tbss", N_("Set the address of the bss segment"), |
576 | N_("-Tbss ADDRESS"), ONE_DASH, | |
45aa233b | 577 | &General_options::set_Tbss), |
756ac4a8 ILT |
578 | GENERAL_ARG('\0', "Tdata", N_("Set the address of the data segment"), |
579 | N_("-Tdata ADDRESS"), ONE_DASH, | |
45aa233b | 580 | &General_options::set_Tdata), |
756ac4a8 | 581 | GENERAL_ARG('\0', "Ttext", N_("Set the address of the text segment"), |
0c5e9c22 | 582 | N_("-Ttext ADDRESS"), ONE_DASH, |
45aa233b | 583 | &General_options::set_Ttext), |
756ac4a8 ILT |
584 | // This must come after -Ttext and friends since it's a prefix of |
585 | // them. | |
a0451b38 ILT |
586 | SPECIAL('T', "script", N_("Read linker script"), |
587 | N_("-T FILE, --script FILE"), TWO_DASHES, | |
588 | &invoke_script), | |
09124467 ILT |
589 | SPECIAL('\0', "version-script", N_("Read version script"), |
590 | N_("--version-script FILE"), TWO_DASHES, | |
591 | &invoke_version_script), | |
fe9a4c12 ILT |
592 | GENERAL_NOARG('\0', "threads", N_("Run the linker multi-threaded"), |
593 | NULL, TWO_DASHES, &General_options::set_threads), | |
594 | GENERAL_NOARG('\0', "no-threads", N_("Do not run the linker multi-threaded"), | |
45aa233b | 595 | NULL, TWO_DASHES, &General_options::set_no_threads), |
fe9a4c12 ILT |
596 | GENERAL_ARG('\0', "thread-count", N_("Number of threads to use"), |
597 | N_("--thread-count COUNT"), TWO_DASHES, | |
598 | &General_options::set_thread_count), | |
599 | GENERAL_ARG('\0', "thread-count-initial", | |
600 | N_("Number of threads to use in initial pass"), | |
601 | N_("--thread-count-initial COUNT"), TWO_DASHES, | |
602 | &General_options::set_thread_count_initial), | |
603 | GENERAL_ARG('\0', "thread-count-middle", | |
604 | N_("Number of threads to use in middle pass"), | |
605 | N_("--thread-count-middle COUNT"), TWO_DASHES, | |
606 | &General_options::set_thread_count_middle), | |
607 | GENERAL_ARG('\0', "thread-count-final", | |
608 | N_("Number of threads to use in final pass"), | |
609 | N_("--thread-count-final COUNT"), TWO_DASHES, | |
610 | &General_options::set_thread_count_final), | |
4973341a ILT |
611 | POSDEP_NOARG('\0', "whole-archive", |
612 | N_("Include all archive contents"), | |
613 | NULL, TWO_DASHES, | |
614 | &Position_dependent_options::set_whole_archive), | |
615 | POSDEP_NOARG('\0', "no-whole-archive", | |
616 | N_("Include only needed archive contents"), | |
617 | NULL, TWO_DASHES, | |
45aa233b | 618 | &Position_dependent_options::set_no_whole_archive), |
35cdfc9a ILT |
619 | |
620 | GENERAL_ARG('z', NULL, | |
621 | N_("Subcommands as follows:\n\ | |
622 | -z execstack Mark output as requiring executable stack\n\ | |
cd72c291 ILT |
623 | -z noexecstack Mark output as not requiring executable stack\n\ |
624 | -z max-page-size=SIZE Set maximum page size to SIZE\n\ | |
625 | -z common-page-size=SIZE Set common page size to SIZE"), | |
35cdfc9a ILT |
626 | N_("-z SUBCOMMAND"), ONE_DASH, |
627 | &General_options::handle_z_option), | |
628 | ||
0c5e9c22 ILT |
629 | SPECIAL('(', "start-group", N_("Start a library search group"), NULL, |
630 | TWO_DASHES, &start_group), | |
631 | SPECIAL(')', "end-group", N_("End a library search group"), NULL, | |
632 | TWO_DASHES, &end_group), | |
bae7f79e | 633 | SPECIAL('\0', "help", N_("Report usage information"), NULL, |
8486ee48 ILT |
634 | TWO_DASHES, &help), |
635 | SPECIAL('v', "version", N_("Report version information"), NULL, | |
c7912668 | 636 | TWO_DASHES, &version), |
494e05f4 | 637 | GENERAL_ARG('\0', "debug", N_("Turn on debugging (all,task,script)"), |
c7912668 ILT |
638 | N_("--debug=TYPE"), TWO_DASHES, |
639 | &General_options::handle_debug_option) | |
bae7f79e ILT |
640 | }; |
641 | ||
61ba1cf9 | 642 | const int options::Command_line_options::options_size = |
bae7f79e ILT |
643 | sizeof (options) / sizeof (options[0]); |
644 | ||
35cdfc9a ILT |
645 | // The -z options. |
646 | ||
647 | const options::One_z_option | |
648 | options::Command_line_options::z_options[] = | |
649 | { | |
cd72c291 ILT |
650 | { "execstack", &General_options::set_execstack, NULL }, |
651 | { "noexecstack", &General_options::set_noexecstack, NULL }, | |
652 | { "max-page-size", NULL, &General_options::set_max_page_size }, | |
653 | { "common-page-size", NULL, &General_options::set_common_page_size } | |
35cdfc9a ILT |
654 | }; |
655 | ||
656 | const int options::Command_line_options::z_options_size = | |
657 | sizeof(z_options) / sizeof(z_options[0]); | |
658 | ||
c7912668 ILT |
659 | // The --debug options. |
660 | ||
661 | const options::One_debug_option | |
662 | options::Command_line_options::debug_options[] = | |
663 | { | |
664 | { "all", DEBUG_ALL }, | |
665 | { "task", DEBUG_TASK }, | |
494e05f4 | 666 | { "script", DEBUG_SCRIPT } |
c7912668 ILT |
667 | }; |
668 | ||
669 | const int options::Command_line_options::debug_options_size = | |
670 | sizeof(debug_options) / sizeof(debug_options[0]); | |
671 | ||
bae7f79e ILT |
672 | // The default values for the general options. |
673 | ||
a5dc0706 | 674 | General_options::General_options() |
0dfbdef4 ILT |
675 | : define_common_(false), |
676 | user_set_define_common_(false), | |
677 | entry_(NULL), | |
a5dc0706 | 678 | export_dynamic_(false), |
fced7afd | 679 | soname_(NULL), |
a6badf5a | 680 | dynamic_linker_(NULL), |
dbe717ef | 681 | search_path_(), |
ca3a67a5 | 682 | optimization_level_(0), |
61ba1cf9 | 683 | output_file_name_("a.out"), |
45aa233b ILT |
684 | oformat_(OBJECT_FORMAT_ELF), |
685 | oformat_string_(NULL), | |
7019cd25 | 686 | emit_relocs_(false), |
61ba1cf9 | 687 | is_relocatable_(false), |
9e2dcb77 | 688 | strip_(STRIP_NONE), |
9a2d6984 | 689 | allow_shlib_undefined_(false), |
51b08ebe | 690 | symbolic_(false), |
9a0910c3 | 691 | compress_debug_sections_(NO_COMPRESSION), |
a55ce7fe | 692 | detect_odr_violations_(false), |
7da52175 | 693 | create_eh_frame_hdr_(false), |
4973341a | 694 | rpath_(), |
15b3cfae | 695 | rpath_link_(), |
92e059d8 | 696 | is_shared_(false), |
ad2d6943 | 697 | is_static_(false), |
e44fcf3b | 698 | print_stats_(false), |
0c5e9c22 | 699 | sysroot_(), |
756ac4a8 ILT |
700 | bss_segment_address_(-1U), // -1 indicates value not set by user |
701 | data_segment_address_(-1U), | |
702 | text_segment_address_(-1U), | |
fe9a4c12 ILT |
703 | threads_(false), |
704 | thread_count_initial_(0), | |
705 | thread_count_middle_(0), | |
35cdfc9a | 706 | thread_count_final_(0), |
c7912668 | 707 | execstack_(EXECSTACK_FROM_INPUT), |
cd72c291 ILT |
708 | max_page_size_(0), |
709 | common_page_size_(0), | |
a5dc0706 | 710 | debug_(0) |
bae7f79e | 711 | { |
a2b1aa12 ILT |
712 | // We initialize demangle_ based on the environment variable |
713 | // COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
714 | // output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
715 | // environment. Acting the same way here lets us provide the same | |
716 | // interface by default. | |
717 | this->demangle_ = getenv("COLLECT_NO_DEMANGLE") == NULL; | |
bae7f79e ILT |
718 | } |
719 | ||
bc644c6c | 720 | // Handle the --oformat option. |
516cb3d0 ILT |
721 | |
722 | void | |
45aa233b | 723 | General_options::set_oformat(const char* arg) |
516cb3d0 | 724 | { |
45aa233b ILT |
725 | this->oformat_string_ = arg; |
726 | this->oformat_ = string_to_object_format(arg); | |
516cb3d0 ILT |
727 | } |
728 | ||
35cdfc9a ILT |
729 | // Handle the -z option. |
730 | ||
731 | void | |
732 | General_options::handle_z_option(const char* arg) | |
733 | { | |
cd72c291 ILT |
734 | // ARG may be a word, like "noexec", or it may be an option in its |
735 | // own right, like "max-page-size=SIZE". | |
736 | const char* argarg = strchr(arg, '='); // the argument to the -z argument | |
737 | int arglen; | |
738 | if (argarg) | |
739 | { | |
740 | arglen = argarg - arg; | |
741 | argarg++; | |
742 | } | |
743 | else | |
744 | arglen = strlen(arg); | |
745 | ||
35cdfc9a ILT |
746 | const int z_options_size = options::Command_line_options::z_options_size; |
747 | const gold::options::One_z_option* z_options = | |
748 | gold::options::Command_line_options::z_options; | |
749 | for (int i = 0; i < z_options_size; ++i) | |
750 | { | |
cd72c291 ILT |
751 | if (memcmp(arg, z_options[i].name, arglen) == 0 |
752 | && z_options[i].name[arglen] == '\0') | |
35cdfc9a | 753 | { |
cd72c291 ILT |
754 | if (z_options[i].set_noarg && argarg) |
755 | gold::gold_fatal(_("-z subcommand does not take an argument: %s\n"), | |
756 | z_options[i].name); | |
757 | else if (z_options[i].set_arg && !argarg) | |
758 | gold::gold_fatal(_("-z subcommand requires an argument: %s\n"), | |
759 | z_options[i].name); | |
760 | else if (z_options[i].set_arg) | |
761 | (this->*(z_options[i].set_arg))(argarg); | |
762 | else | |
763 | (this->*(z_options[i].set_noarg))(true); | |
764 | return; | |
765 | } | |
35cdfc9a ILT |
766 | } |
767 | ||
cd72c291 ILT |
768 | gold::gold_fatal(_("%s: unrecognized -z subcommand: %s\n"), |
769 | program_name, arg); | |
c7912668 ILT |
770 | } |
771 | ||
772 | // Handle the --debug option. | |
773 | ||
774 | void | |
775 | General_options::handle_debug_option(const char* arg) | |
776 | { | |
777 | const int debug_options_size = | |
778 | options::Command_line_options::debug_options_size; | |
779 | const gold::options::One_debug_option* debug_options = | |
780 | options::Command_line_options::debug_options; | |
781 | for (int i = 0; i < debug_options_size; ++i) | |
782 | { | |
783 | if (strcmp(arg, debug_options[i].name) == 0) | |
784 | { | |
785 | this->set_debug(debug_options[i].debug_flags); | |
786 | return; | |
787 | } | |
788 | } | |
789 | ||
790 | fprintf(stderr, _("%s: unrecognized --debug subcommand: %s\n"), | |
791 | program_name, arg); | |
792 | ::exit(EXIT_FAILURE); | |
35cdfc9a ILT |
793 | } |
794 | ||
ad2d6943 ILT |
795 | // Add the sysroot, if any, to the search paths. |
796 | ||
797 | void | |
798 | General_options::add_sysroot() | |
799 | { | |
800 | if (this->sysroot_.empty()) | |
801 | { | |
802 | this->sysroot_ = get_default_sysroot(); | |
803 | if (this->sysroot_.empty()) | |
804 | return; | |
805 | } | |
806 | ||
807 | const char* sysroot = this->sysroot_.c_str(); | |
808 | char* canonical_sysroot = lrealpath(sysroot); | |
809 | ||
810 | for (Dir_list::iterator p = this->search_path_.begin(); | |
811 | p != this->search_path_.end(); | |
812 | ++p) | |
813 | p->add_sysroot(sysroot, canonical_sysroot); | |
814 | ||
815 | free(canonical_sysroot); | |
816 | } | |
817 | ||
e5756efb ILT |
818 | // The default values for the position dependent options. |
819 | ||
820 | Position_dependent_options::Position_dependent_options() | |
821 | : do_static_search_(false), | |
822 | as_needed_(false), | |
bc644c6c ILT |
823 | include_whole_archive_(false), |
824 | input_format_(General_options::OBJECT_FORMAT_ELF) | |
825 | { | |
826 | } | |
827 | ||
828 | // Set the input format. | |
829 | ||
830 | void | |
45aa233b | 831 | Position_dependent_options::set_format(const char* arg) |
e5756efb | 832 | { |
bc644c6c | 833 | this->input_format_ = string_to_object_format(arg); |
e5756efb ILT |
834 | } |
835 | ||
ad2d6943 ILT |
836 | // Search_directory methods. |
837 | ||
838 | // This is called if we have a sysroot. Apply the sysroot if | |
839 | // appropriate. Record whether the directory is in the sysroot. | |
840 | ||
841 | void | |
842 | Search_directory::add_sysroot(const char* sysroot, | |
843 | const char* canonical_sysroot) | |
844 | { | |
845 | gold_assert(*sysroot != '\0'); | |
846 | if (this->put_in_sysroot_) | |
847 | { | |
848 | if (!IS_DIR_SEPARATOR(this->name_[0]) | |
849 | && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1])) | |
850 | this->name_ = '/' + this->name_; | |
851 | this->name_ = sysroot + this->name_; | |
852 | this->is_in_sysroot_ = true; | |
853 | } | |
854 | else | |
855 | { | |
856 | // Check whether this entry is in the sysroot. To do this | |
857 | // correctly, we need to use canonical names. Otherwise we will | |
858 | // get confused by the ../../.. paths that gcc tends to use. | |
859 | char* canonical_name = lrealpath(this->name_.c_str()); | |
860 | int canonical_name_len = strlen(canonical_name); | |
861 | int canonical_sysroot_len = strlen(canonical_sysroot); | |
862 | if (canonical_name_len > canonical_sysroot_len | |
863 | && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len])) | |
864 | { | |
865 | canonical_name[canonical_sysroot_len] = '\0'; | |
866 | if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0) | |
867 | this->is_in_sysroot_ = true; | |
868 | } | |
869 | free(canonical_name); | |
870 | } | |
871 | } | |
872 | ||
dbe717ef ILT |
873 | // Input_arguments methods. |
874 | ||
875 | // Add a file to the list. | |
876 | ||
877 | void | |
878 | Input_arguments::add_file(const Input_file_argument& file) | |
879 | { | |
880 | if (!this->in_group_) | |
881 | this->input_argument_list_.push_back(Input_argument(file)); | |
882 | else | |
883 | { | |
a3ad94ed ILT |
884 | gold_assert(!this->input_argument_list_.empty()); |
885 | gold_assert(this->input_argument_list_.back().is_group()); | |
dbe717ef ILT |
886 | this->input_argument_list_.back().group()->add_file(file); |
887 | } | |
888 | } | |
889 | ||
890 | // Start a group. | |
891 | ||
892 | void | |
893 | Input_arguments::start_group() | |
894 | { | |
a3ad94ed | 895 | gold_assert(!this->in_group_); |
dbe717ef ILT |
896 | Input_file_group* group = new Input_file_group(); |
897 | this->input_argument_list_.push_back(Input_argument(group)); | |
898 | this->in_group_ = true; | |
899 | } | |
900 | ||
901 | // End a group. | |
902 | ||
903 | void | |
904 | Input_arguments::end_group() | |
905 | { | |
a3ad94ed | 906 | gold_assert(this->in_group_); |
dbe717ef ILT |
907 | this->in_group_ = false; |
908 | } | |
909 | ||
ead1e424 | 910 | // Command_line options. |
bae7f79e | 911 | |
a5dc0706 ILT |
912 | Command_line::Command_line() |
913 | : options_(), position_options_(), script_options_(), inputs_() | |
bae7f79e ILT |
914 | { |
915 | } | |
916 | ||
a0451b38 ILT |
917 | // Process the command line options. For process_one_option, |
918 | // i is the index of argv to process next, and the return value | |
919 | // is the index of the next option to process (i+1 or i+2, or argc | |
920 | // to indicate processing is done). no_more_options is set to true | |
921 | // if (and when) "--" is seen as an option. | |
bae7f79e | 922 | |
a0451b38 ILT |
923 | int |
924 | Command_line::process_one_option(int argc, char** argv, int i, | |
925 | bool* no_more_options) | |
bae7f79e | 926 | { |
61ba1cf9 | 927 | const int options_size = options::Command_line_options::options_size; |
a0451b38 ILT |
928 | const options::One_option* options = options::Command_line_options::options; |
929 | gold_assert(i < argc); | |
930 | ||
931 | if (argv[i][0] != '-' || *no_more_options) | |
bae7f79e | 932 | { |
a0451b38 ILT |
933 | this->add_file(argv[i], false); |
934 | return i + 1; | |
935 | } | |
bae7f79e | 936 | |
a0451b38 ILT |
937 | // Option starting with '-'. |
938 | int dashes = 1; | |
939 | if (argv[i][1] == '-') | |
940 | { | |
941 | dashes = 2; | |
942 | if (argv[i][2] == '\0') | |
943 | { | |
944 | *no_more_options = true; | |
945 | return i + 1; | |
946 | } | |
947 | } | |
bae7f79e | 948 | |
a0451b38 ILT |
949 | // Look for a long option match. |
950 | char* opt = argv[i] + dashes; | |
951 | char first = opt[0]; | |
952 | int skiparg = 0; | |
953 | char* arg = strchr(opt, '='); | |
954 | bool argument_with_equals = arg != NULL; | |
955 | if (arg != NULL) | |
956 | { | |
957 | *arg = '\0'; | |
958 | ++arg; | |
959 | } | |
960 | else if (i + 1 < argc) | |
961 | { | |
962 | arg = argv[i + 1]; | |
963 | skiparg = 1; | |
964 | } | |
bae7f79e | 965 | |
a0451b38 ILT |
966 | int j; |
967 | for (j = 0; j < options_size; ++j) | |
968 | { | |
969 | if (options[j].long_option != NULL | |
970 | && (dashes == 2 | |
516cb3d0 ILT |
971 | || (options[j].dash |
972 | != options::One_option::EXACTLY_TWO_DASHES)) | |
a0451b38 ILT |
973 | && first == options[j].long_option[0] |
974 | && strcmp(opt, options[j].long_option) == 0) | |
975 | { | |
976 | if (options[j].special) | |
977 | { | |
978 | // Restore the '=' we clobbered above. | |
979 | if (arg != NULL && skiparg == 0) | |
980 | arg[-1] = '='; | |
981 | i += options[j].special(argc - i, argv + i, opt, true, this); | |
982 | } | |
983 | else | |
984 | { | |
985 | if (!options[j].takes_argument()) | |
986 | { | |
987 | if (argument_with_equals) | |
988 | this->usage(_("unexpected argument"), argv[i]); | |
989 | arg = NULL; | |
990 | skiparg = 0; | |
991 | } | |
992 | else | |
993 | { | |
994 | if (arg == NULL) | |
995 | this->usage(_("missing argument"), argv[i]); | |
996 | } | |
997 | this->apply_option(options[j], arg); | |
998 | i += skiparg + 1; | |
999 | } | |
1000 | break; | |
1001 | } | |
1002 | } | |
1003 | if (j < options_size) | |
1004 | return i; | |
1005 | ||
1006 | // If we saw two dashes, we needed to have seen a long option. | |
1007 | if (dashes == 2) | |
1008 | this->usage(_("unknown option"), argv[i]); | |
1009 | ||
1010 | // Look for a short option match. There may be more than one | |
1011 | // short option in a given argument. | |
1012 | bool done = false; | |
1013 | char* s = argv[i] + 1; | |
1014 | ++i; | |
1015 | while (*s != '\0' && !done) | |
1016 | { | |
1017 | char opt = *s; | |
bae7f79e ILT |
1018 | int j; |
1019 | for (j = 0; j < options_size; ++j) | |
a0451b38 ILT |
1020 | { |
1021 | if (options[j].short_option == opt) | |
1022 | { | |
1023 | if (options[j].special) | |
1024 | { | |
1025 | // Undo the argument skip done above. | |
1026 | --i; | |
1027 | i += options[j].special(argc - i, argv + i, s, false, | |
1028 | this); | |
1029 | done = true; | |
1030 | } | |
1031 | else | |
1032 | { | |
1033 | arg = NULL; | |
1034 | if (options[j].takes_argument()) | |
1035 | { | |
1036 | if (s[1] != '\0') | |
1037 | { | |
1038 | arg = s + 1; | |
1039 | done = true; | |
1040 | } | |
1041 | else if (i < argc) | |
1042 | { | |
1043 | arg = argv[i]; | |
1044 | ++i; | |
1045 | } | |
1046 | else | |
1047 | this->usage(_("missing argument"), opt); | |
1048 | } | |
1049 | this->apply_option(options[j], arg); | |
1050 | } | |
1051 | break; | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | if (j >= options_size) | |
1056 | this->usage(_("unknown option"), *s); | |
1057 | ||
1058 | ++s; | |
1059 | } | |
1060 | return i; | |
1061 | } | |
bae7f79e | 1062 | |
bae7f79e | 1063 | |
a0451b38 ILT |
1064 | void |
1065 | Command_line::process(int argc, char** argv) | |
1066 | { | |
1067 | bool no_more_options = false; | |
1068 | int i = 0; | |
1069 | while (i < argc) | |
1070 | i = process_one_option(argc, argv, i, &no_more_options); | |
61ba1cf9 | 1071 | |
dbe717ef | 1072 | if (this->inputs_.in_group()) |
ead1e424 | 1073 | { |
35cdfc9a | 1074 | fprintf(stderr, _("%s: missing group end\n"), program_name); |
ead1e424 ILT |
1075 | this->usage(); |
1076 | } | |
1077 | ||
61ba1cf9 | 1078 | // FIXME: We should only do this when configured in native mode. |
ad2d6943 ILT |
1079 | this->options_.add_to_search_path_with_sysroot("/lib"); |
1080 | this->options_.add_to_search_path_with_sysroot("/usr/lib"); | |
1081 | ||
1082 | this->options_.add_sysroot(); | |
46738c9a ILT |
1083 | |
1084 | // Ensure options don't contradict each other and are otherwise kosher. | |
1085 | this->normalize_options(); | |
1086 | } | |
1087 | ||
3c2fafa5 ILT |
1088 | // Extract an option argument for a special option. LONGNAME is the |
1089 | // long name of the option. This sets *PRET to the return value for | |
1090 | // the special function handler to skip to the next option. | |
1091 | ||
1092 | const char* | |
1093 | Command_line::get_special_argument(const char* longname, int argc, char** argv, | |
1094 | const char* arg, bool long_option, | |
1095 | int *pret) | |
1096 | { | |
1097 | if (long_option) | |
1098 | { | |
1099 | size_t longlen = strlen(longname); | |
1100 | gold_assert(strncmp(arg, longname, longlen) == 0); | |
1101 | arg += longlen; | |
1102 | if (*arg == '=') | |
1103 | { | |
1104 | *pret = 1; | |
1105 | return arg + 1; | |
1106 | } | |
1107 | else if (argc > 1) | |
1108 | { | |
1109 | gold_assert(*arg == '\0'); | |
1110 | *pret = 2; | |
1111 | return argv[1]; | |
1112 | } | |
1113 | } | |
1114 | else | |
1115 | { | |
1116 | if (arg[1] != '\0') | |
1117 | { | |
1118 | *pret = 1; | |
1119 | return arg + 1; | |
1120 | } | |
1121 | else if (argc > 1) | |
1122 | { | |
1123 | *pret = 2; | |
1124 | return argv[1]; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | this->usage(_("missing argument"), arg); | |
1129 | } | |
1130 | ||
46738c9a ILT |
1131 | // Ensure options don't contradict each other and are otherwise kosher. |
1132 | ||
1133 | void | |
1134 | Command_line::normalize_options() | |
1135 | { | |
45aa233b | 1136 | if (this->options_.shared() && this->options_.relocatable()) |
6a74a719 ILT |
1137 | gold_fatal(_("-shared and -r are incompatible")); |
1138 | ||
45aa233b ILT |
1139 | if (this->options_.oformat() != General_options::OBJECT_FORMAT_ELF |
1140 | && (this->options_.shared() || this->options_.relocatable())) | |
516cb3d0 ILT |
1141 | gold_fatal(_("binary output format not compatible with -shared or -r")); |
1142 | ||
46738c9a ILT |
1143 | // If the user specifies both -s and -r, convert the -s as -S. |
1144 | // -r requires us to keep externally visible symbols! | |
45aa233b | 1145 | if (this->options_.strip_all() && this->options_.relocatable()) |
46738c9a ILT |
1146 | { |
1147 | // Clears the strip_all() status, replacing it with strip_debug(). | |
45aa233b | 1148 | this->options_.set_strip_debug(true); |
46738c9a ILT |
1149 | } |
1150 | ||
0dfbdef4 ILT |
1151 | // Set default value for define_common. |
1152 | if (!this->options_.user_set_define_common()) | |
1153 | this->options_.set_define_common(!this->options_.relocatable()); | |
1154 | ||
46738c9a | 1155 | // FIXME: we can/should be doing a lot more sanity checking here. |
bae7f79e ILT |
1156 | } |
1157 | ||
46738c9a | 1158 | |
bae7f79e ILT |
1159 | // Apply a command line option. |
1160 | ||
1161 | void | |
61ba1cf9 ILT |
1162 | Command_line::apply_option(const options::One_option& opt, |
1163 | const char* arg) | |
bae7f79e ILT |
1164 | { |
1165 | if (arg == NULL) | |
1166 | { | |
1167 | if (opt.general_noarg) | |
45aa233b | 1168 | (this->options_.*(opt.general_noarg))(true); |
bae7f79e | 1169 | else if (opt.dependent_noarg) |
45aa233b | 1170 | (this->position_options_.*(opt.dependent_noarg))(true); |
bae7f79e | 1171 | else |
61ba1cf9 | 1172 | gold_unreachable(); |
bae7f79e ILT |
1173 | } |
1174 | else | |
1175 | { | |
1176 | if (opt.general_arg) | |
1177 | (this->options_.*(opt.general_arg))(arg); | |
1178 | else if (opt.dependent_arg) | |
1179 | (this->position_options_.*(opt.dependent_arg))(arg); | |
1180 | else | |
61ba1cf9 | 1181 | gold_unreachable(); |
bae7f79e ILT |
1182 | } |
1183 | } | |
1184 | ||
ead1e424 ILT |
1185 | // Add an input file or library. |
1186 | ||
1187 | void | |
1188 | Command_line::add_file(const char* name, bool is_lib) | |
1189 | { | |
88dd47ac | 1190 | Input_file_argument file(name, is_lib, "", false, this->position_options_); |
dbe717ef | 1191 | this->inputs_.add_file(file); |
ead1e424 ILT |
1192 | } |
1193 | ||
61ba1cf9 ILT |
1194 | // Handle the -l option, which requires special treatment. |
1195 | ||
1196 | int | |
3c2fafa5 ILT |
1197 | Command_line::process_l_option(int argc, char** argv, char* arg, |
1198 | bool long_option) | |
61ba1cf9 ILT |
1199 | { |
1200 | int ret; | |
3c2fafa5 ILT |
1201 | const char* libname = this->get_special_argument("library", argc, argv, arg, |
1202 | long_option, &ret); | |
ead1e424 | 1203 | this->add_file(libname, true); |
61ba1cf9 ILT |
1204 | return ret; |
1205 | } | |
1206 | ||
ead1e424 ILT |
1207 | // Handle the --start-group option. |
1208 | ||
1209 | void | |
1210 | Command_line::start_group(const char* arg) | |
1211 | { | |
dbe717ef | 1212 | if (this->inputs_.in_group()) |
ead1e424 | 1213 | this->usage(_("may not nest groups"), arg); |
dbe717ef | 1214 | this->inputs_.start_group(); |
ead1e424 ILT |
1215 | } |
1216 | ||
1217 | // Handle the --end-group option. | |
1218 | ||
1219 | void | |
1220 | Command_line::end_group(const char* arg) | |
1221 | { | |
dbe717ef | 1222 | if (!this->inputs_.in_group()) |
ead1e424 | 1223 | this->usage(_("group end without group start"), arg); |
dbe717ef | 1224 | this->inputs_.end_group(); |
ead1e424 ILT |
1225 | } |
1226 | ||
bae7f79e ILT |
1227 | // Report a usage error. */ |
1228 | ||
1229 | void | |
61ba1cf9 | 1230 | Command_line::usage() |
bae7f79e ILT |
1231 | { |
1232 | fprintf(stderr, | |
1233 | _("%s: use the --help option for usage information\n"), | |
61ba1cf9 | 1234 | program_name); |
c7912668 | 1235 | ::exit(EXIT_FAILURE); |
bae7f79e ILT |
1236 | } |
1237 | ||
1238 | void | |
61ba1cf9 | 1239 | Command_line::usage(const char* msg, const char *opt) |
bae7f79e ILT |
1240 | { |
1241 | fprintf(stderr, | |
1242 | _("%s: %s: %s\n"), | |
61ba1cf9 | 1243 | program_name, opt, msg); |
bae7f79e ILT |
1244 | this->usage(); |
1245 | } | |
1246 | ||
1247 | void | |
61ba1cf9 | 1248 | Command_line::usage(const char* msg, char opt) |
bae7f79e ILT |
1249 | { |
1250 | fprintf(stderr, | |
1251 | _("%s: -%c: %s\n"), | |
61ba1cf9 | 1252 | program_name, opt, msg); |
bae7f79e ILT |
1253 | this->usage(); |
1254 | } | |
61ba1cf9 ILT |
1255 | |
1256 | } // End namespace gold. |