Commit | Line | Data |
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bae7f79e ILT |
1 | // options.c -- handle command line options for gold |
2 | ||
b90efa5b | 3 | // Copyright (C) 2006-2015 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 | ||
8c604651 | 25 | #include <cerrno> |
a2b1aa12 | 26 | #include <cstdlib> |
04bf7072 | 27 | #include <cstring> |
8c604651 | 28 | #include <fstream> |
ee1fe73e | 29 | #include <vector> |
bae7f79e | 30 | #include <iostream> |
ad2d6943 ILT |
31 | #include <sys/stat.h> |
32 | #include "filenames.h" | |
33 | #include "libiberty.h" | |
086a1841 | 34 | #include "demangle.h" |
819d6c3a | 35 | #include "../bfd/bfdver.h" |
bae7f79e | 36 | |
c7912668 | 37 | #include "debug.h" |
e5756efb | 38 | #include "script.h" |
ee1fe73e | 39 | #include "target-select.h" |
bae7f79e | 40 | #include "options.h" |
89fc3421 | 41 | #include "plugin.h" |
bae7f79e | 42 | |
61ba1cf9 ILT |
43 | namespace gold |
44 | { | |
45 | ||
ee1fe73e ILT |
46 | General_options |
47 | Position_dependent_options::default_options_; | |
bae7f79e | 48 | |
ee1fe73e | 49 | namespace options |
bae7f79e | 50 | { |
bae7f79e | 51 | |
293c1386 | 52 | // This flag is TRUE if we should register the command-line options as they |
9b547ce6 | 53 | // are constructed. It is set after construction of the options within |
293c1386 CC |
54 | // class Position_dependent_options. |
55 | static bool ready_to_register = false; | |
56 | ||
ee1fe73e ILT |
57 | // This global variable is set up as General_options is constructed. |
58 | static std::vector<const One_option*> registered_options; | |
bae7f79e | 59 | |
ee1fe73e ILT |
60 | // These are set up at the same time -- the variables that accept one |
61 | // dash, two, or require -z. A single variable may be in more than | |
9b547ce6 | 62 | // one of these data structures. |
ee1fe73e ILT |
63 | typedef Unordered_map<std::string, One_option*> Option_map; |
64 | static Option_map* long_options = NULL; | |
65 | static One_option* short_options[128]; | |
bae7f79e | 66 | |
ee1fe73e ILT |
67 | void |
68 | One_option::register_option() | |
35cdfc9a | 69 | { |
293c1386 CC |
70 | if (!ready_to_register) |
71 | return; | |
72 | ||
ee1fe73e | 73 | registered_options.push_back(this); |
35cdfc9a | 74 | |
ee1fe73e ILT |
75 | // We can't make long_options a static Option_map because we can't |
76 | // guarantee that will be initialized before register_option() is | |
77 | // first called. | |
78 | if (long_options == NULL) | |
79 | long_options = new Option_map; | |
cd72c291 | 80 | |
ee1fe73e ILT |
81 | // TWO_DASHES means that two dashes are preferred, but one is ok too. |
82 | if (!this->longname.empty()) | |
83 | (*long_options)[this->longname] = this; | |
35cdfc9a | 84 | |
ee1fe73e ILT |
85 | const int shortname_as_int = static_cast<int>(this->shortname); |
86 | gold_assert(shortname_as_int >= 0 && shortname_as_int < 128); | |
87 | if (this->shortname != '\0') | |
293c1386 CC |
88 | { |
89 | gold_assert(short_options[shortname_as_int] == NULL); | |
90 | short_options[shortname_as_int] = this; | |
91 | } | |
ee1fe73e | 92 | } |
c7912668 | 93 | |
ee1fe73e ILT |
94 | void |
95 | One_option::print() const | |
c7912668 | 96 | { |
ee1fe73e ILT |
97 | bool comma = false; |
98 | printf(" "); | |
99 | int len = 2; | |
100 | if (this->shortname != '\0') | |
101 | { | |
102 | len += printf("-%c", this->shortname); | |
103 | if (this->helparg) | |
bbc5ae17 RM |
104 | { |
105 | // -z takes long-names only. | |
106 | gold_assert(this->dashes != DASH_Z); | |
107 | len += printf(" %s", gettext(this->helparg)); | |
108 | } | |
ee1fe73e ILT |
109 | comma = true; |
110 | } | |
111 | if (!this->longname.empty() | |
112 | && !(this->longname[0] == this->shortname | |
113 | && this->longname[1] == '\0')) | |
114 | { | |
115 | if (comma) | |
bbc5ae17 | 116 | len += printf(", "); |
ee1fe73e | 117 | switch (this->dashes) |
bbc5ae17 RM |
118 | { |
119 | case options::ONE_DASH: case options::EXACTLY_ONE_DASH: | |
120 | len += printf("-"); | |
121 | break; | |
122 | case options::TWO_DASHES: case options::EXACTLY_TWO_DASHES: | |
123 | len += printf("--"); | |
124 | break; | |
125 | case options::DASH_Z: | |
126 | len += printf("-z "); | |
127 | break; | |
128 | default: | |
129 | gold_unreachable(); | |
130 | } | |
ee1fe73e ILT |
131 | len += printf("%s", this->longname.c_str()); |
132 | if (this->helparg) | |
bbc5ae17 RM |
133 | { |
134 | // For most options, we print "--frob FOO". But for -z | |
135 | // we print "-z frob=FOO". | |
136 | len += printf("%c%s", this->dashes == options::DASH_Z ? '=' : ' ', | |
137 | gettext(this->helparg)); | |
138 | } | |
ee1fe73e ILT |
139 | } |
140 | ||
141 | if (len >= 30) | |
142 | { | |
143 | printf("\n"); | |
144 | len = 0; | |
145 | } | |
146 | for (; len < 30; ++len) | |
147 | std::putchar(' '); | |
c7912668 | 148 | |
ee1fe73e | 149 | // TODO: if we're boolean, add " (default)" when appropriate. |
a4d4b13f | 150 | printf("%s\n", gettext(this->helpstring)); |
ee1fe73e | 151 | } |
c7912668 | 152 | |
ee1fe73e ILT |
153 | void |
154 | help() | |
bae7f79e | 155 | { |
ee1fe73e | 156 | printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name); |
bae7f79e | 157 | |
ee1fe73e ILT |
158 | std::vector<const One_option*>::const_iterator it; |
159 | for (it = registered_options.begin(); it != registered_options.end(); ++it) | |
160 | (*it)->print(); | |
e96caa79 ILT |
161 | |
162 | // config.guess and libtool.m4 look in ld --help output for the | |
163 | // string "supported targets". | |
164 | printf(_("%s: supported targets:"), gold::program_name); | |
165 | std::vector<const char*> supported_names; | |
166 | gold::supported_target_names(&supported_names); | |
167 | for (std::vector<const char*>::const_iterator p = supported_names.begin(); | |
168 | p != supported_names.end(); | |
169 | ++p) | |
170 | printf(" %s", *p); | |
171 | printf("\n"); | |
819d6c3a | 172 | |
03ef7571 ILT |
173 | printf(_("%s: supported emulations:"), gold::program_name); |
174 | supported_names.clear(); | |
175 | gold::supported_emulation_names(&supported_names); | |
176 | for (std::vector<const char*>::const_iterator p = supported_names.begin(); | |
177 | p != supported_names.end(); | |
178 | ++p) | |
179 | printf(" %s", *p); | |
180 | printf("\n"); | |
181 | ||
819d6c3a ILT |
182 | // REPORT_BUGS_TO is defined in bfd/bfdver.h. |
183 | const char* report = REPORT_BUGS_TO; | |
184 | if (*report != '\0') | |
185 | printf(_("Report bugs to %s\n"), report); | |
ee1fe73e | 186 | } |
61ba1cf9 | 187 | |
ee1fe73e ILT |
188 | // For bool, arg will be NULL (boolean options take no argument); |
189 | // we always just set to true. | |
190 | void | |
191 | parse_bool(const char*, const char*, bool* retval) | |
bae7f79e | 192 | { |
ee1fe73e ILT |
193 | *retval = true; |
194 | } | |
bae7f79e | 195 | |
ee1fe73e ILT |
196 | void |
197 | parse_uint(const char* option_name, const char* arg, int* retval) | |
198 | { | |
199 | char* endptr; | |
200 | *retval = strtol(arg, &endptr, 0); | |
6a59a5c2 | 201 | if (*endptr != '\0' || *retval < 0) |
ee1fe73e | 202 | gold_fatal(_("%s: invalid option value (expected an integer): %s"), |
bbc5ae17 | 203 | option_name, arg); |
ee1fe73e | 204 | } |
bc644c6c | 205 | |
c0a62865 DK |
206 | void |
207 | parse_int(const char* option_name, const char* arg, int* retval) | |
208 | { | |
209 | char* endptr; | |
210 | *retval = strtol(arg, &endptr, 0); | |
211 | if (*endptr != '\0') | |
212 | gold_fatal(_("%s: invalid option value (expected an integer): %s"), | |
bbc5ae17 | 213 | option_name, arg); |
c0a62865 DK |
214 | } |
215 | ||
ee1fe73e | 216 | void |
ca09d69a | 217 | parse_uint64(const char* option_name, const char* arg, uint64_t* retval) |
bc644c6c | 218 | { |
ee1fe73e ILT |
219 | char* endptr; |
220 | *retval = strtoull(arg, &endptr, 0); | |
221 | if (*endptr != '\0') | |
222 | gold_fatal(_("%s: invalid option value (expected an integer): %s"), | |
bbc5ae17 | 223 | option_name, arg); |
ee1fe73e ILT |
224 | } |
225 | ||
c18476e7 ILT |
226 | void |
227 | parse_double(const char* option_name, const char* arg, double* retval) | |
228 | { | |
229 | char* endptr; | |
230 | *retval = strtod(arg, &endptr); | |
231 | if (*endptr != '\0') | |
232 | gold_fatal(_("%s: invalid option value " | |
233 | "(expected a floating point number): %s"), | |
234 | option_name, arg); | |
235 | } | |
236 | ||
9fbd3822 CC |
237 | void |
238 | parse_percent(const char* option_name, const char* arg, double* retval) | |
239 | { | |
240 | char* endptr; | |
241 | *retval = strtod(arg, &endptr) / 100.0; | |
242 | if (*endptr != '\0') | |
243 | gold_fatal(_("%s: invalid option value " | |
244 | "(expected a floating point number): %s"), | |
245 | option_name, arg); | |
246 | } | |
247 | ||
ee1fe73e ILT |
248 | void |
249 | parse_string(const char* option_name, const char* arg, const char** retval) | |
250 | { | |
251 | if (*arg == '\0') | |
252 | gold_fatal(_("%s: must take a non-empty argument"), option_name); | |
253 | *retval = arg; | |
254 | } | |
255 | ||
086a1841 ILT |
256 | void |
257 | parse_optional_string(const char*, const char* arg, const char** retval) | |
258 | { | |
259 | *retval = arg; | |
260 | } | |
261 | ||
ee1fe73e ILT |
262 | void |
263 | parse_dirlist(const char*, const char* arg, Dir_list* retval) | |
264 | { | |
265 | retval->push_back(Search_directory(arg, false)); | |
266 | } | |
267 | ||
c5818ff1 CC |
268 | void |
269 | parse_set(const char*, const char* arg, String_set* retval) | |
270 | { | |
271 | retval->insert(std::string(arg)); | |
272 | } | |
273 | ||
ee1fe73e ILT |
274 | void |
275 | parse_choices(const char* option_name, const char* arg, const char** retval, | |
bbc5ae17 | 276 | const char* choices[], int num_choices) |
ee1fe73e ILT |
277 | { |
278 | for (int i = 0; i < num_choices; i++) | |
279 | if (strcmp(choices[i], arg) == 0) | |
280 | { | |
bbc5ae17 RM |
281 | *retval = arg; |
282 | return; | |
ee1fe73e ILT |
283 | } |
284 | ||
285 | // If we get here, the user did not enter a valid choice, so we die. | |
286 | std::string choices_list; | |
287 | for (int i = 0; i < num_choices; i++) | |
bc644c6c | 288 | { |
ee1fe73e ILT |
289 | choices_list += choices[i]; |
290 | if (i != num_choices - 1) | |
bbc5ae17 | 291 | choices_list += ", "; |
bc644c6c | 292 | } |
ee1fe73e | 293 | gold_fatal(_("%s: must take one of the following arguments: %s"), |
bbc5ae17 | 294 | option_name, choices_list.c_str()); |
bc644c6c ILT |
295 | } |
296 | ||
ee1fe73e | 297 | } // End namespace options. |
a5dc0706 | 298 | |
ee1fe73e ILT |
299 | // Define the handler for "special" options (set via DEFINE_special). |
300 | ||
301 | void | |
302 | General_options::parse_help(const char*, const char*, Command_line*) | |
a5dc0706 | 303 | { |
ee1fe73e ILT |
304 | options::help(); |
305 | ::exit(EXIT_SUCCESS); | |
a5dc0706 ILT |
306 | } |
307 | ||
ee1fe73e ILT |
308 | void |
309 | General_options::parse_version(const char* opt, const char*, Command_line*) | |
310 | { | |
329ca2b1 ST |
311 | bool print_short = (opt[0] == '-' && opt[1] == 'v'); |
312 | gold::print_version(print_short); | |
3dcad376 | 313 | this->printed_version_ = true; |
329ca2b1 ST |
314 | if (!print_short) |
315 | ::exit(EXIT_SUCCESS); | |
ee1fe73e | 316 | } |
61ba1cf9 | 317 | |
b5be4a7c DM |
318 | void |
319 | General_options::parse_V(const char*, const char*, Command_line*) | |
320 | { | |
321 | gold::print_version(true); | |
459c9f1c | 322 | this->printed_version_ = true; |
03ef7571 | 323 | |
b5be4a7c DM |
324 | printf(_(" Supported targets:\n")); |
325 | std::vector<const char*> supported_names; | |
326 | gold::supported_target_names(&supported_names); | |
327 | for (std::vector<const char*>::const_iterator p = supported_names.begin(); | |
328 | p != supported_names.end(); | |
329 | ++p) | |
330 | printf(" %s\n", *p); | |
03ef7571 ILT |
331 | |
332 | printf(_(" Supported emulations:\n")); | |
333 | supported_names.clear(); | |
334 | gold::supported_emulation_names(&supported_names); | |
335 | for (std::vector<const char*>::const_iterator p = supported_names.begin(); | |
336 | p != supported_names.end(); | |
337 | ++p) | |
338 | printf(" %s\n", *p); | |
b5be4a7c DM |
339 | } |
340 | ||
ee1fe73e ILT |
341 | void |
342 | General_options::parse_defsym(const char*, const char* arg, | |
bbc5ae17 | 343 | Command_line* cmdline) |
ee1fe73e ILT |
344 | { |
345 | cmdline->script_options().define_symbol(arg); | |
346 | } | |
88dd47ac | 347 | |
cd3c333f CC |
348 | void |
349 | General_options::parse_discard_all(const char*, const char*, | |
350 | Command_line*) | |
351 | { | |
352 | this->discard_locals_ = DISCARD_ALL; | |
353 | } | |
354 | ||
355 | void | |
356 | General_options::parse_discard_locals(const char*, const char*, | |
357 | Command_line*) | |
358 | { | |
359 | this->discard_locals_ = DISCARD_LOCALS; | |
360 | } | |
361 | ||
362 | void | |
363 | General_options::parse_discard_none(const char*, const char*, | |
364 | Command_line*) | |
365 | { | |
366 | this->discard_locals_ = DISCARD_NONE; | |
367 | } | |
368 | ||
8c21d9d3 CC |
369 | void |
370 | General_options::parse_incremental(const char*, const char*, | |
bbc5ae17 | 371 | Command_line*) |
8c21d9d3 CC |
372 | { |
373 | this->incremental_mode_ = INCREMENTAL_AUTO; | |
374 | } | |
375 | ||
376 | void | |
377 | General_options::parse_no_incremental(const char*, const char*, | |
bbc5ae17 | 378 | Command_line*) |
8c21d9d3 CC |
379 | { |
380 | this->incremental_mode_ = INCREMENTAL_OFF; | |
381 | } | |
382 | ||
383 | void | |
384 | General_options::parse_incremental_full(const char*, const char*, | |
385 | Command_line*) | |
386 | { | |
387 | this->incremental_mode_ = INCREMENTAL_FULL; | |
388 | } | |
389 | ||
390 | void | |
391 | General_options::parse_incremental_update(const char*, const char*, | |
392 | Command_line*) | |
393 | { | |
394 | this->incremental_mode_ = INCREMENTAL_UPDATE; | |
395 | } | |
396 | ||
266d0a74 ILT |
397 | void |
398 | General_options::parse_incremental_changed(const char*, const char*, | |
bbc5ae17 | 399 | Command_line*) |
266d0a74 ILT |
400 | { |
401 | this->implicit_incremental_ = true; | |
402 | this->incremental_disposition_ = INCREMENTAL_CHANGED; | |
403 | } | |
404 | ||
405 | void | |
406 | General_options::parse_incremental_unchanged(const char*, const char*, | |
bbc5ae17 | 407 | Command_line*) |
266d0a74 ILT |
408 | { |
409 | this->implicit_incremental_ = true; | |
410 | this->incremental_disposition_ = INCREMENTAL_UNCHANGED; | |
411 | } | |
412 | ||
413 | void | |
414 | General_options::parse_incremental_unknown(const char*, const char*, | |
bbc5ae17 | 415 | Command_line*) |
266d0a74 ILT |
416 | { |
417 | this->implicit_incremental_ = true; | |
418 | this->incremental_disposition_ = INCREMENTAL_CHECK; | |
419 | } | |
420 | ||
221597a5 CC |
421 | void |
422 | General_options::parse_incremental_startup_unchanged(const char*, const char*, | |
423 | Command_line*) | |
424 | { | |
425 | this->implicit_incremental_ = true; | |
426 | this->incremental_startup_disposition_ = INCREMENTAL_UNCHANGED; | |
427 | } | |
428 | ||
ee1fe73e ILT |
429 | void |
430 | General_options::parse_library(const char*, const char* arg, | |
bbc5ae17 | 431 | Command_line* cmdline) |
ee1fe73e | 432 | { |
ae3b5189 | 433 | Input_file_argument::Input_file_type type; |
ca09d69a | 434 | const char* name; |
ae3b5189 CD |
435 | if (arg[0] == ':') |
436 | { | |
437 | type = Input_file_argument::INPUT_FILE_TYPE_SEARCHED_FILE; | |
438 | name = arg + 1; | |
439 | } | |
440 | else | |
441 | { | |
442 | type = Input_file_argument::INPUT_FILE_TYPE_LIBRARY; | |
443 | name = arg; | |
444 | } | |
445 | Input_file_argument file(name, type, "", false, *this); | |
ee1fe73e ILT |
446 | cmdline->inputs().add_file(file); |
447 | } | |
448 | ||
89fc3421 CC |
449 | #ifdef ENABLE_PLUGINS |
450 | void | |
451 | General_options::parse_plugin(const char*, const char* arg, | |
bbc5ae17 | 452 | Command_line*) |
89fc3421 CC |
453 | { |
454 | this->add_plugin(arg); | |
455 | } | |
4674ecfc CC |
456 | |
457 | // Parse --plugin-opt. | |
458 | ||
459 | void | |
460 | General_options::parse_plugin_opt(const char*, const char* arg, | |
bbc5ae17 | 461 | Command_line*) |
4674ecfc CC |
462 | { |
463 | this->add_plugin_option(arg); | |
464 | } | |
89fc3421 CC |
465 | #endif // ENABLE_PLUGINS |
466 | ||
ee1fe73e ILT |
467 | void |
468 | General_options::parse_R(const char* option, const char* arg, | |
bbc5ae17 | 469 | Command_line* cmdline) |
88dd47ac | 470 | { |
88dd47ac | 471 | struct stat s; |
ee1fe73e ILT |
472 | if (::stat(arg, &s) != 0 || S_ISDIR(s.st_mode)) |
473 | this->add_to_rpath(arg); | |
88dd47ac | 474 | else |
ee1fe73e | 475 | this->parse_just_symbols(option, arg, cmdline); |
88dd47ac ILT |
476 | } |
477 | ||
ee1fe73e ILT |
478 | void |
479 | General_options::parse_just_symbols(const char*, const char* arg, | |
bbc5ae17 | 480 | Command_line* cmdline) |
88dd47ac | 481 | { |
ae3b5189 CD |
482 | Input_file_argument file(arg, Input_file_argument::INPUT_FILE_TYPE_FILE, |
483 | "", true, *this); | |
ee1fe73e | 484 | cmdline->inputs().add_file(file); |
88dd47ac ILT |
485 | } |
486 | ||
a192ba05 ILT |
487 | // Handle --section-start. |
488 | ||
489 | void | |
490 | General_options::parse_section_start(const char*, const char* arg, | |
491 | Command_line*) | |
492 | { | |
493 | const char* eq = strchr(arg, '='); | |
494 | if (eq == NULL) | |
495 | { | |
496 | gold_error(_("invalid argument to --section-start; " | |
497 | "must be SECTION=ADDRESS")); | |
498 | return; | |
499 | } | |
500 | ||
501 | std::string section_name(arg, eq - arg); | |
502 | ||
503 | ++eq; | |
504 | const char* val_start = eq; | |
505 | if (eq[0] == '0' && (eq[1] == 'x' || eq[1] == 'X')) | |
506 | eq += 2; | |
507 | if (*eq == '\0') | |
508 | { | |
509 | gold_error(_("--section-start address missing")); | |
510 | return; | |
511 | } | |
512 | uint64_t addr = 0; | |
513 | hex_init(); | |
514 | for (; *eq != '\0'; ++eq) | |
515 | { | |
516 | if (!hex_p(*eq)) | |
517 | { | |
518 | gold_error(_("--section-start argument %s is not a valid hex number"), | |
519 | val_start); | |
520 | return; | |
521 | } | |
522 | addr <<= 4; | |
523 | addr += hex_value(*eq); | |
524 | } | |
525 | ||
526 | this->section_starts_[section_name] = addr; | |
527 | } | |
528 | ||
529 | // Look up a --section-start value. | |
530 | ||
531 | bool | |
532 | General_options::section_start(const char* secname, uint64_t* paddr) const | |
533 | { | |
534 | if (this->section_starts_.empty()) | |
535 | return false; | |
536 | std::map<std::string, uint64_t>::const_iterator p = | |
537 | this->section_starts_.find(secname); | |
538 | if (p == this->section_starts_.end()) | |
539 | return false; | |
540 | *paddr = p->second; | |
541 | return true; | |
542 | } | |
543 | ||
ee1fe73e ILT |
544 | void |
545 | General_options::parse_static(const char*, const char*, Command_line*) | |
3c2fafa5 | 546 | { |
ee1fe73e | 547 | this->set_static(true); |
09124467 ILT |
548 | } |
549 | ||
ee1fe73e ILT |
550 | void |
551 | General_options::parse_script(const char*, const char* arg, | |
bbc5ae17 | 552 | Command_line* cmdline) |
09124467 | 553 | { |
ee1fe73e ILT |
554 | if (!read_commandline_script(arg, cmdline)) |
555 | gold::gold_fatal(_("unable to parse script file %s"), arg); | |
61ba1cf9 ILT |
556 | } |
557 | ||
ee1fe73e ILT |
558 | void |
559 | General_options::parse_version_script(const char*, const char* arg, | |
bbc5ae17 | 560 | Command_line* cmdline) |
ead1e424 | 561 | { |
ee1fe73e ILT |
562 | if (!read_version_script(arg, cmdline)) |
563 | gold::gold_fatal(_("unable to parse version script file %s"), arg); | |
ead1e424 ILT |
564 | } |
565 | ||
c82fbeee CS |
566 | void |
567 | General_options::parse_dynamic_list(const char*, const char* arg, | |
bbc5ae17 | 568 | Command_line* cmdline) |
c82fbeee CS |
569 | { |
570 | if (!read_dynamic_list(arg, cmdline, &this->dynamic_list_)) | |
571 | gold::gold_fatal(_("unable to parse dynamic-list script file %s"), arg); | |
fd834e57 | 572 | this->have_dynamic_list_ = true; |
c82fbeee CS |
573 | } |
574 | ||
ee1fe73e ILT |
575 | void |
576 | General_options::parse_start_group(const char*, const char*, | |
bbc5ae17 | 577 | Command_line* cmdline) |
ee1fe73e ILT |
578 | { |
579 | cmdline->inputs().start_group(); | |
580 | } | |
ead1e424 | 581 | |
ee1fe73e ILT |
582 | void |
583 | General_options::parse_end_group(const char*, const char*, | |
bbc5ae17 | 584 | Command_line* cmdline) |
ead1e424 | 585 | { |
ee1fe73e | 586 | cmdline->inputs().end_group(); |
ead1e424 ILT |
587 | } |
588 | ||
b0193076 RÁE |
589 | void |
590 | General_options::parse_start_lib(const char*, const char*, | |
bbc5ae17 | 591 | Command_line* cmdline) |
b0193076 RÁE |
592 | { |
593 | cmdline->inputs().start_lib(cmdline->position_dependent_options()); | |
594 | } | |
595 | ||
596 | void | |
597 | General_options::parse_end_lib(const char*, const char*, | |
bbc5ae17 | 598 | Command_line* cmdline) |
b0193076 RÁE |
599 | { |
600 | cmdline->inputs().end_lib(); | |
601 | } | |
602 | ||
65514900 | 603 | // The function add_excluded_libs() in ld/ldlang.c of GNU ld breaks up a list |
9b547ce6 | 604 | // of names separated by commas or colons and puts them in a linked list. |
65514900 CC |
605 | // We implement the same parsing of names here but store names in an unordered |
606 | // map to speed up searching of names. | |
607 | ||
608 | void | |
609 | General_options::parse_exclude_libs(const char*, const char* arg, | |
bbc5ae17 | 610 | Command_line*) |
65514900 | 611 | { |
ca09d69a | 612 | const char* p = arg; |
65514900 CC |
613 | |
614 | while (*p != '\0') | |
615 | { | |
616 | size_t length = strcspn(p, ",:"); | |
617 | this->excluded_libs_.insert(std::string(p, length)); | |
618 | p += (p[length] ? length + 1 : length); | |
619 | } | |
620 | } | |
621 | ||
622 | // The checking logic is based on the function check_excluded_libs() in | |
623 | // ld/ldlang.c of GNU ld but our implementation is different because we use | |
624 | // an unordered map instead of a linked list, which is what GNU ld uses. GNU | |
625 | // ld searches sequentially in the excluded libs list. For a given archive, | |
626 | // a match is found if the archive's name matches exactly one of the list | |
627 | // entry or if the archive's name is of the form FOO.a and FOO matches exactly | |
628 | // one of the list entry. An entry "ALL" in the list is considered as a | |
629 | // wild-card and matches any given name. | |
630 | ||
631 | bool | |
ca09d69a | 632 | General_options::check_excluded_libs(const std::string &name) const |
65514900 CC |
633 | { |
634 | Unordered_set<std::string>::const_iterator p; | |
635 | ||
636 | // Exit early for the most common case. | |
637 | if (excluded_libs_.empty()) | |
638 | return false; | |
639 | ||
640 | // If we see "ALL", all archives are excluded from automatic export. | |
641 | p = excluded_libs_.find(std::string("ALL")); | |
642 | if (p != excluded_libs_.end()) | |
643 | return true; | |
644 | ||
2fdd743f | 645 | // First strip off any directories in name. |
ca09d69a | 646 | const char* basename = lbasename(name.c_str()); |
2fdd743f | 647 | |
65514900 | 648 | // Try finding an exact match. |
2fdd743f | 649 | p = excluded_libs_.find(std::string(basename)); |
65514900 CC |
650 | if (p != excluded_libs_.end()) |
651 | return true; | |
652 | ||
653 | // Try matching NAME without ".a" at the end. | |
2fdd743f | 654 | size_t length = strlen(basename); |
65514900 | 655 | if ((length >= 2) |
2fdd743f DK |
656 | && (basename[length - 2] == '.') |
657 | && (basename[length - 1] == 'a')) | |
65514900 | 658 | { |
2fdd743f | 659 | p = excluded_libs_.find(std::string(basename, length - 2)); |
65514900 CC |
660 | if (p != excluded_libs_.end()) |
661 | return true; | |
662 | } | |
663 | ||
664 | return false; | |
665 | } | |
666 | ||
e6a307ba ILT |
667 | // Recognize input and output target names. The GNU linker accepts |
668 | // these with --format and --oformat. This code is intended to be | |
669 | // minimally compatible. In practice for an ELF target this would be | |
670 | // the same target as the input files; that name always start with | |
671 | // "elf". Non-ELF targets would be "srec", "symbolsrec", "tekhex", | |
672 | // "binary", "ihex". | |
673 | ||
674 | General_options::Object_format | |
675 | General_options::string_to_object_format(const char* arg) | |
676 | { | |
956b03bb | 677 | if (strncmp(arg, "elf", 3) == 0 || strcmp(arg, "default") == 0) |
e6a307ba ILT |
678 | return gold::General_options::OBJECT_FORMAT_ELF; |
679 | else if (strcmp(arg, "binary") == 0) | |
680 | return gold::General_options::OBJECT_FORMAT_BINARY; | |
681 | else | |
682 | { | |
683 | gold::gold_error(_("format '%s' not supported; treating as elf " | |
bbc5ae17 RM |
684 | "(supported formats: elf, binary)"), |
685 | arg); | |
e6a307ba ILT |
686 | return gold::General_options::OBJECT_FORMAT_ELF; |
687 | } | |
688 | } | |
689 | ||
9b2fd367 DK |
690 | void |
691 | General_options::parse_fix_v4bx(const char*, const char*, | |
bbc5ae17 | 692 | Command_line*) |
9b2fd367 DK |
693 | { |
694 | this->fix_v4bx_ = FIX_V4BX_REPLACE; | |
695 | } | |
696 | ||
697 | void | |
698 | General_options::parse_fix_v4bx_interworking(const char*, const char*, | |
699 | Command_line*) | |
700 | { | |
701 | this->fix_v4bx_ = FIX_V4BX_INTERWORKING; | |
702 | } | |
703 | ||
7296d933 DK |
704 | void |
705 | General_options::parse_EB(const char*, const char*, Command_line*) | |
706 | { | |
707 | this->endianness_ = ENDIANNESS_BIG; | |
708 | } | |
709 | ||
710 | void | |
711 | General_options::parse_EL(const char*, const char*, Command_line*) | |
712 | { | |
713 | this->endianness_ = ENDIANNESS_LITTLE; | |
714 | } | |
715 | ||
ee1fe73e | 716 | } // End namespace gold. |
bae7f79e | 717 | |
ee1fe73e | 718 | namespace |
bae7f79e | 719 | { |
bae7f79e | 720 | |
ee1fe73e ILT |
721 | void |
722 | usage() | |
723 | { | |
724 | fprintf(stderr, | |
bbc5ae17 RM |
725 | _("%s: use the --help option for usage information\n"), |
726 | gold::program_name); | |
ee1fe73e ILT |
727 | ::exit(EXIT_FAILURE); |
728 | } | |
bae7f79e | 729 | |
ee1fe73e | 730 | void |
ca09d69a | 731 | usage(const char* msg, const char* opt) |
ee1fe73e ILT |
732 | { |
733 | fprintf(stderr, | |
bbc5ae17 RM |
734 | _("%s: %s: %s\n"), |
735 | gold::program_name, opt, msg); | |
ee1fe73e | 736 | usage(); |
bae7f79e ILT |
737 | } |
738 | ||
ad2d6943 ILT |
739 | // If the default sysroot is relocatable, try relocating it based on |
740 | // the prefix FROM. | |
741 | ||
fd9d194f | 742 | static char* |
ad2d6943 ILT |
743 | get_relative_sysroot(const char* from) |
744 | { | |
745 | char* path = make_relative_prefix(gold::program_name, from, | |
bbc5ae17 | 746 | TARGET_SYSTEM_ROOT); |
ad2d6943 ILT |
747 | if (path != NULL) |
748 | { | |
749 | struct stat s; | |
750 | if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode)) | |
bbc5ae17 | 751 | return path; |
ad2d6943 ILT |
752 | free(path); |
753 | } | |
754 | ||
755 | return NULL; | |
756 | } | |
757 | ||
758 | // Return the default sysroot. This is set by the --with-sysroot | |
ee1fe73e ILT |
759 | // option to configure. Note we do not free the return value of |
760 | // get_relative_sysroot, which is a small memory leak, but is | |
761 | // necessary since we store this pointer directly in General_options. | |
ad2d6943 | 762 | |
fd9d194f | 763 | static const char* |
ad2d6943 ILT |
764 | get_default_sysroot() |
765 | { | |
766 | const char* sysroot = TARGET_SYSTEM_ROOT; | |
767 | if (*sysroot == '\0') | |
ee1fe73e | 768 | return NULL; |
ad2d6943 ILT |
769 | |
770 | if (TARGET_SYSTEM_ROOT_RELOCATABLE) | |
771 | { | |
ee1fe73e | 772 | char* path = get_relative_sysroot(BINDIR); |
ad2d6943 | 773 | if (path == NULL) |
bbc5ae17 | 774 | path = get_relative_sysroot(TOOLBINDIR); |
ad2d6943 | 775 | if (path != NULL) |
bbc5ae17 | 776 | return path; |
ad2d6943 ILT |
777 | } |
778 | ||
779 | return sysroot; | |
780 | } | |
781 | ||
ee1fe73e ILT |
782 | // Parse a long option. Such options have the form |
783 | // <-|--><option>[=arg]. If "=arg" is not present but the option | |
784 | // takes an argument, the next word is taken to the be the argument. | |
785 | // If equals_only is set, then only the <option>=<arg> form is | |
786 | // accepted, not the <option><space><arg> form. Returns a One_option | |
787 | // struct or NULL if argv[i] cannot be parsed as a long option. In | |
788 | // the not-NULL case, *arg is set to the option's argument (NULL if | |
789 | // the option takes no argument), and *i is advanced past this option. | |
790 | // NOTE: it is safe for argv and arg to point to the same place. | |
791 | gold::options::One_option* | |
792 | parse_long_option(int argc, const char** argv, bool equals_only, | |
bbc5ae17 | 793 | const char** arg, int* i) |
61ba1cf9 | 794 | { |
ee1fe73e | 795 | const char* const this_argv = argv[*i]; |
bae7f79e | 796 | |
ee1fe73e ILT |
797 | const char* equals = strchr(this_argv, '='); |
798 | const char* option_start = this_argv + strspn(this_argv, "-"); | |
799 | std::string option(option_start, | |
bbc5ae17 | 800 | equals ? equals - option_start : strlen(option_start)); |
35cdfc9a | 801 | |
ee1fe73e ILT |
802 | gold::options::Option_map::iterator it |
803 | = gold::options::long_options->find(option); | |
804 | if (it == gold::options::long_options->end()) | |
805 | return NULL; | |
35cdfc9a | 806 | |
ee1fe73e | 807 | gold::options::One_option* retval = it->second; |
c7912668 | 808 | |
ee1fe73e ILT |
809 | // If the dash-count doesn't match, we fail. |
810 | if (this_argv[0] != '-') // no dashes at all: had better be "-z <longopt>" | |
811 | { | |
812 | if (retval->dashes != gold::options::DASH_Z) | |
bbc5ae17 | 813 | return NULL; |
ee1fe73e ILT |
814 | } |
815 | else if (this_argv[1] != '-') // one dash | |
816 | { | |
817 | if (retval->dashes != gold::options::ONE_DASH | |
bbc5ae17 RM |
818 | && retval->dashes != gold::options::EXACTLY_ONE_DASH |
819 | && retval->dashes != gold::options::TWO_DASHES) | |
820 | return NULL; | |
ee1fe73e ILT |
821 | } |
822 | else // two dashes (or more!) | |
823 | { | |
824 | if (retval->dashes != gold::options::TWO_DASHES | |
bbc5ae17 RM |
825 | && retval->dashes != gold::options::EXACTLY_TWO_DASHES |
826 | && retval->dashes != gold::options::ONE_DASH) | |
827 | return NULL; | |
ee1fe73e | 828 | } |
bae7f79e | 829 | |
ee1fe73e ILT |
830 | // Now that we know the option is good (or else bad in a way that |
831 | // will cause us to die), increment i to point past this argv. | |
832 | ++(*i); | |
bae7f79e | 833 | |
ee1fe73e ILT |
834 | // Figure out the option's argument, if any. |
835 | if (!retval->takes_argument()) | |
836 | { | |
837 | if (equals) | |
bbc5ae17 | 838 | usage(_("unexpected argument"), this_argv); |
ee1fe73e | 839 | else |
bbc5ae17 | 840 | *arg = NULL; |
ee1fe73e ILT |
841 | } |
842 | else | |
843 | { | |
844 | if (equals) | |
bbc5ae17 | 845 | *arg = equals + 1; |
086a1841 ILT |
846 | else if (retval->takes_optional_argument()) |
847 | *arg = retval->default_value; | |
ee1fe73e | 848 | else if (*i < argc && !equals_only) |
bbc5ae17 | 849 | *arg = argv[(*i)++]; |
ee1fe73e | 850 | else |
bbc5ae17 | 851 | usage(_("missing argument"), this_argv); |
ee1fe73e | 852 | } |
516cb3d0 | 853 | |
ee1fe73e ILT |
854 | return retval; |
855 | } | |
856 | ||
857 | // Parse a short option. Such options have the form -<option>[arg]. | |
858 | // If "arg" is not present but the option takes an argument, the next | |
859 | // word is taken to the be the argument. If the option does not take | |
860 | // an argument, it may be followed by another short option. Returns a | |
861 | // One_option struct or NULL if argv[i] cannot be parsed as a short | |
862 | // option. In the not-NULL case, *arg is set to the option's argument | |
863 | // (NULL if the option takes no argument), and *i is advanced past | |
864 | // this option. This function keeps *i the same if we parsed a short | |
865 | // option that does not take an argument, that looks to be followed by | |
866 | // another short option in the same word. | |
867 | gold::options::One_option* | |
868 | parse_short_option(int argc, const char** argv, int pos_in_argv_i, | |
bbc5ae17 | 869 | const char** arg, int* i) |
ee1fe73e ILT |
870 | { |
871 | const char* const this_argv = argv[*i]; | |
872 | ||
873 | if (this_argv[0] != '-') | |
874 | return NULL; | |
875 | ||
876 | // We handle -z as a special case. | |
877 | static gold::options::One_option dash_z("", gold::options::DASH_Z, | |
bbc5ae17 | 878 | 'z', "", NULL, "Z-OPTION", false, |
086a1841 | 879 | NULL); |
ee1fe73e ILT |
880 | gold::options::One_option* retval = NULL; |
881 | if (this_argv[pos_in_argv_i] == 'z') | |
882 | retval = &dash_z; | |
883 | else | |
884 | { | |
885 | const int char_as_int = static_cast<int>(this_argv[pos_in_argv_i]); | |
886 | if (char_as_int > 0 && char_as_int < 128) | |
bbc5ae17 | 887 | retval = gold::options::short_options[char_as_int]; |
ee1fe73e | 888 | } |
516cb3d0 | 889 | |
ee1fe73e ILT |
890 | if (retval == NULL) |
891 | return NULL; | |
35cdfc9a | 892 | |
ee1fe73e ILT |
893 | // Figure out the option's argument, if any. |
894 | if (!retval->takes_argument()) | |
cd72c291 | 895 | { |
ee1fe73e ILT |
896 | *arg = NULL; |
897 | // We only advance past this argument if it's the only one in argv. | |
898 | if (this_argv[pos_in_argv_i + 1] == '\0') | |
bbc5ae17 | 899 | ++(*i); |
cd72c291 ILT |
900 | } |
901 | else | |
ee1fe73e ILT |
902 | { |
903 | // If we take an argument, we'll eat up this entire argv entry. | |
904 | ++(*i); | |
905 | if (this_argv[pos_in_argv_i + 1] != '\0') | |
bbc5ae17 | 906 | *arg = this_argv + pos_in_argv_i + 1; |
086a1841 ILT |
907 | else if (retval->takes_optional_argument()) |
908 | *arg = retval->default_value; | |
ee1fe73e | 909 | else if (*i < argc) |
bbc5ae17 | 910 | *arg = argv[(*i)++]; |
ee1fe73e | 911 | else |
bbc5ae17 | 912 | usage(_("missing argument"), this_argv); |
ee1fe73e | 913 | } |
cd72c291 | 914 | |
ee1fe73e ILT |
915 | // If we're a -z option, we need to parse our argument as a |
916 | // long-option, e.g. "-z stacksize=8192". | |
917 | if (retval == &dash_z) | |
35cdfc9a | 918 | { |
ee1fe73e ILT |
919 | int dummy_i = 0; |
920 | const char* dash_z_arg = *arg; | |
921 | retval = parse_long_option(1, arg, true, arg, &dummy_i); | |
922 | if (retval == NULL) | |
bbc5ae17 | 923 | usage(_("unknown -z option"), dash_z_arg); |
35cdfc9a ILT |
924 | } |
925 | ||
ee1fe73e | 926 | return retval; |
c7912668 ILT |
927 | } |
928 | ||
ee1fe73e | 929 | } // End anonymous namespace. |
c7912668 | 930 | |
ee1fe73e | 931 | namespace gold |
c7912668 | 932 | { |
c7912668 | 933 | |
ee1fe73e | 934 | General_options::General_options() |
459c9f1c | 935 | : printed_version_(false), |
a192ba05 ILT |
936 | execstack_status_(EXECSTACK_FROM_INPUT), |
937 | icf_status_(ICF_NONE), | |
938 | static_(false), | |
939 | do_demangle_(false), | |
940 | plugins_(NULL), | |
941 | dynamic_list_(), | |
fd834e57 | 942 | have_dynamic_list_(false), |
8c21d9d3 | 943 | incremental_mode_(INCREMENTAL_OFF), |
221597a5 CC |
944 | incremental_disposition_(INCREMENTAL_STARTUP), |
945 | incremental_startup_disposition_(INCREMENTAL_CHECK), | |
a192ba05 ILT |
946 | implicit_incremental_(false), |
947 | excluded_libs_(), | |
948 | symbols_to_retain_(), | |
2fd9ae7a | 949 | section_starts_(), |
7296d933 | 950 | fix_v4bx_(FIX_V4BX_NONE), |
cd3c333f CC |
951 | endianness_(ENDIANNESS_NOT_SET), |
952 | discard_locals_(DISCARD_SEC_MERGE) | |
ee1fe73e | 953 | { |
293c1386 CC |
954 | // Turn off option registration once construction is complete. |
955 | gold::options::ready_to_register = false; | |
ee1fe73e ILT |
956 | } |
957 | ||
958 | General_options::Object_format | |
959 | General_options::format_enum() const | |
960 | { | |
e6a307ba | 961 | return General_options::string_to_object_format(this->format()); |
ee1fe73e ILT |
962 | } |
963 | ||
964 | General_options::Object_format | |
965 | General_options::oformat_enum() const | |
966 | { | |
e6a307ba | 967 | return General_options::string_to_object_format(this->oformat()); |
35cdfc9a ILT |
968 | } |
969 | ||
ad2d6943 ILT |
970 | // Add the sysroot, if any, to the search paths. |
971 | ||
972 | void | |
973 | General_options::add_sysroot() | |
974 | { | |
ee1fe73e | 975 | if (this->sysroot() == NULL || this->sysroot()[0] == '\0') |
ad2d6943 | 976 | { |
ee1fe73e ILT |
977 | this->set_sysroot(get_default_sysroot()); |
978 | if (this->sysroot() == NULL || this->sysroot()[0] == '\0') | |
bbc5ae17 | 979 | return; |
ad2d6943 ILT |
980 | } |
981 | ||
ee1fe73e | 982 | char* canonical_sysroot = lrealpath(this->sysroot()); |
ad2d6943 | 983 | |
ee1fe73e ILT |
984 | for (Dir_list::iterator p = this->library_path_.value.begin(); |
985 | p != this->library_path_.value.end(); | |
ad2d6943 | 986 | ++p) |
ee1fe73e | 987 | p->add_sysroot(this->sysroot(), canonical_sysroot); |
ad2d6943 ILT |
988 | |
989 | free(canonical_sysroot); | |
990 | } | |
991 | ||
fd9d194f ILT |
992 | // Return whether FILENAME is in a system directory. |
993 | ||
994 | bool | |
995 | General_options::is_in_system_directory(const std::string& filename) const | |
996 | { | |
997 | for (Dir_list::const_iterator p = this->library_path_.value.begin(); | |
998 | p != this->library_path_.value.end(); | |
999 | ++p) | |
1000 | { | |
1001 | // We use a straight string comparison rather than calling | |
1002 | // FILENAME_CMP because we are only interested in the cases | |
1003 | // where we found the file in a system directory, which means | |
1004 | // that we used the directory name as a prefix for a -L search. | |
1005 | if (p->is_system_directory() | |
1006 | && filename.compare(0, p->name().size(), p->name()) == 0) | |
1007 | return true; | |
1008 | } | |
1009 | return false; | |
1010 | } | |
1011 | ||
4674ecfc | 1012 | // Add a plugin to the list of plugins. |
89fc3421 CC |
1013 | |
1014 | void | |
4674ecfc | 1015 | General_options::add_plugin(const char* filename) |
89fc3421 CC |
1016 | { |
1017 | if (this->plugins_ == NULL) | |
1018 | this->plugins_ = new Plugin_manager(*this); | |
4674ecfc CC |
1019 | this->plugins_->add_plugin(filename); |
1020 | } | |
1021 | ||
1022 | // Add a plugin option to a plugin. | |
1023 | ||
1024 | void | |
1025 | General_options::add_plugin_option(const char* arg) | |
1026 | { | |
1027 | if (this->plugins_ == NULL) | |
1028 | gold_fatal("--plugin-opt requires --plugin."); | |
1029 | this->plugins_->add_plugin_option(arg); | |
89fc3421 CC |
1030 | } |
1031 | ||
ee1fe73e ILT |
1032 | // Set up variables and other state that isn't set up automatically by |
1033 | // the parse routine, and ensure options don't contradict each other | |
1034 | // and are otherwise kosher. | |
e5756efb | 1035 | |
ee1fe73e ILT |
1036 | void |
1037 | General_options::finalize() | |
bc644c6c | 1038 | { |
ee1fe73e | 1039 | // Normalize the strip modifiers. They have a total order: |
62b01cb5 ILT |
1040 | // strip_all > strip_debug > strip_non_line > strip_debug_gdb. |
1041 | // If one is true, set all beneath it to true as well. | |
ee1fe73e ILT |
1042 | if (this->strip_all()) |
1043 | this->set_strip_debug(true); | |
1044 | if (this->strip_debug()) | |
62b01cb5 ILT |
1045 | this->set_strip_debug_non_line(true); |
1046 | if (this->strip_debug_non_line()) | |
ee1fe73e | 1047 | this->set_strip_debug_gdb(true); |
bc644c6c | 1048 | |
3b293544 CF |
1049 | if (this->Bshareable()) |
1050 | this->set_shared(true); | |
1051 | ||
ee1fe73e ILT |
1052 | // If the user specifies both -s and -r, convert the -s to -S. |
1053 | // -r requires us to keep externally visible symbols! | |
1054 | if (this->strip_all() && this->relocatable()) | |
1055 | { | |
1056 | this->set_strip_all(false); | |
1057 | gold_assert(this->strip_debug()); | |
1058 | } | |
bc644c6c | 1059 | |
ee1fe73e ILT |
1060 | // For us, -dc and -dp are synonyms for --define-common. |
1061 | if (this->dc()) | |
1062 | this->set_define_common(true); | |
1063 | if (this->dp()) | |
1064 | this->set_define_common(true); | |
1065 | ||
1066 | // We also set --define-common if we're not relocatable, as long as | |
1067 | // the user didn't explicitly ask for something different. | |
1068 | if (!this->user_set_define_common()) | |
1069 | this->set_define_common(!this->relocatable()); | |
1070 | ||
1071 | // execstack_status_ is a three-state variable; update it based on | |
1072 | // -z [no]execstack. | |
1073 | if (this->execstack()) | |
1074 | this->set_execstack_status(EXECSTACK_YES); | |
1075 | else if (this->noexecstack()) | |
1076 | this->set_execstack_status(EXECSTACK_NO); | |
1077 | ||
032ce4e9 ST |
1078 | // icf_status_ is a three-state variable; update it based on the |
1079 | // value of this->icf(). | |
1080 | if (strcmp(this->icf(), "none") == 0) | |
1081 | this->set_icf_status(ICF_NONE); | |
1082 | else if (strcmp(this->icf(), "safe") == 0) | |
1083 | this->set_icf_status(ICF_SAFE); | |
1084 | else | |
1085 | this->set_icf_status(ICF_ALL); | |
1086 | ||
086a1841 ILT |
1087 | // Handle the optional argument for --demangle. |
1088 | if (this->user_set_demangle()) | |
1089 | { | |
1090 | this->set_do_demangle(true); | |
1091 | const char* style = this->demangle(); | |
1092 | if (*style != '\0') | |
1093 | { | |
1094 | enum demangling_styles style_code; | |
1095 | ||
1096 | style_code = cplus_demangle_name_to_style(style); | |
1097 | if (style_code == unknown_demangling) | |
1098 | gold_fatal("unknown demangling style '%s'", style); | |
1099 | cplus_demangle_set_style(style_code); | |
1100 | } | |
1101 | } | |
1102 | else if (this->user_set_no_demangle()) | |
1103 | this->set_do_demangle(false); | |
1104 | else | |
1105 | { | |
1106 | // Testing COLLECT_NO_DEMANGLE makes our default demangling | |
1107 | // behaviour identical to that of gcc's linker wrapper. | |
1108 | this->set_do_demangle(getenv("COLLECT_NO_DEMANGLE") == NULL); | |
1109 | } | |
1110 | ||
7d9e3d98 ILT |
1111 | // -M is equivalent to "-Map -". |
1112 | if (this->print_map() && !this->user_set_Map()) | |
1113 | { | |
1114 | this->set_Map("-"); | |
1115 | this->set_user_set_Map(); | |
1116 | } | |
1117 | ||
af6156ef ILT |
1118 | // Using -n or -N implies -static. |
1119 | if (this->nmagic() || this->omagic()) | |
1120 | this->set_static(true); | |
1121 | ||
ee1fe73e ILT |
1122 | // If --thread_count is specified, it applies to |
1123 | // --thread-count-{initial,middle,final}, though it doesn't override | |
1124 | // them. | |
1125 | if (this->thread_count() > 0 && this->thread_count_initial() == 0) | |
1126 | this->set_thread_count_initial(this->thread_count()); | |
1127 | if (this->thread_count() > 0 && this->thread_count_middle() == 0) | |
1128 | this->set_thread_count_middle(this->thread_count()); | |
1129 | if (this->thread_count() > 0 && this->thread_count_final() == 0) | |
1130 | this->set_thread_count_final(this->thread_count()); | |
1131 | ||
09ffbbe0 ILT |
1132 | // Let's warn if you set the thread-count but we're going to ignore it. |
1133 | #ifndef ENABLE_THREADS | |
1134 | if (this->threads()) | |
1135 | { | |
1136 | gold_warning(_("ignoring --threads: " | |
1137 | "%s was compiled without thread support"), | |
1138 | program_name); | |
1139 | this->set_threads(false); | |
1140 | } | |
1141 | if (this->thread_count() > 0 || this->thread_count_initial() > 0 | |
1142 | || this->thread_count_middle() > 0 || this->thread_count_final() > 0) | |
1143 | gold_warning(_("ignoring --thread-count: " | |
bbc5ae17 RM |
1144 | "%s was compiled without thread support"), |
1145 | program_name); | |
09ffbbe0 ILT |
1146 | #endif |
1147 | ||
3f3cddf1 | 1148 | std::string libpath; |
706e1f5e ILT |
1149 | if (this->user_set_Y()) |
1150 | { | |
3f3cddf1 ILT |
1151 | libpath = this->Y(); |
1152 | if (libpath.compare(0, 2, "P,") == 0) | |
1153 | libpath.erase(0, 2); | |
1154 | } | |
1155 | else if (!this->nostdlib()) | |
1156 | { | |
1157 | #ifndef NATIVE_LINKER | |
1158 | #define NATIVE_LINKER 0 | |
1159 | #endif | |
1160 | const char* p = LIB_PATH; | |
1161 | if (strcmp(p, "::DEFAULT::") != 0) | |
1162 | libpath = p; | |
1163 | else if (NATIVE_LINKER | |
1164 | || this->user_set_sysroot() | |
1165 | || *TARGET_SYSTEM_ROOT != '\0') | |
1166 | { | |
1167 | this->add_to_library_path_with_sysroot("/lib"); | |
1168 | this->add_to_library_path_with_sysroot("/usr/lib"); | |
1169 | } | |
1170 | else | |
1171 | this->add_to_library_path_with_sysroot(TOOLLIBDIR); | |
1172 | } | |
706e1f5e | 1173 | |
3f3cddf1 ILT |
1174 | if (!libpath.empty()) |
1175 | { | |
706e1f5e ILT |
1176 | size_t pos = 0; |
1177 | size_t next_pos; | |
1178 | do | |
1179 | { | |
3f3cddf1 | 1180 | next_pos = libpath.find(':', pos); |
706e1f5e ILT |
1181 | size_t len = (next_pos == std::string::npos |
1182 | ? next_pos | |
1183 | : next_pos - pos); | |
1184 | if (len != 0) | |
3f3cddf1 | 1185 | this->add_to_library_path_with_sysroot(libpath.substr(pos, len)); |
706e1f5e ILT |
1186 | pos = next_pos + 1; |
1187 | } | |
1188 | while (next_pos != std::string::npos); | |
1189 | } | |
ee1fe73e | 1190 | |
8c604651 CS |
1191 | // Parse the contents of -retain-symbols-file into a set. |
1192 | if (this->retain_symbols_file()) | |
1193 | { | |
1194 | std::ifstream in; | |
1195 | in.open(this->retain_symbols_file()); | |
1196 | if (!in) | |
bbc5ae17 RM |
1197 | gold_fatal(_("unable to open -retain-symbols-file file %s: %s"), |
1198 | this->retain_symbols_file(), strerror(errno)); | |
8c604651 CS |
1199 | std::string line; |
1200 | std::getline(in, line); // this chops off the trailing \n, if any | |
1201 | while (in) | |
bbc5ae17 RM |
1202 | { |
1203 | if (!line.empty() && line[line.length() - 1] == '\r') // Windows | |
1204 | line.resize(line.length() - 1); | |
1205 | this->symbols_to_retain_.insert(line); | |
1206 | std::getline(in, line); | |
1207 | } | |
8c604651 CS |
1208 | } |
1209 | ||
e2153196 ILT |
1210 | // -Bgroup implies --unresolved-symbols=report-all. |
1211 | if (this->Bgroup() && !this->user_set_unresolved_symbols()) | |
1212 | this->set_unresolved_symbols("report-all"); | |
1213 | ||
1214 | // -shared implies --allow-shlib-undefined. Currently | |
1215 | // ---allow-shlib-undefined controls warnings issued based on the | |
1216 | // -symbol table. --unresolved-symbols controls warnings issued | |
1217 | // -based on relocations. | |
d7ab2a47 KVH |
1218 | if (this->shared() && !this->user_set_allow_shlib_undefined()) |
1219 | this->set_allow_shlib_undefined(true); | |
1220 | ||
ee1fe73e ILT |
1221 | // Normalize library_path() by adding the sysroot to all directories |
1222 | // in the path, as appropriate. | |
1223 | this->add_sysroot(); | |
1224 | ||
1225 | // Now that we've normalized the options, check for contradictory ones. | |
4e1e25e0 CC |
1226 | if (this->shared() && this->is_static()) |
1227 | gold_fatal(_("-shared and -static are incompatible")); | |
374ad285 ILT |
1228 | if (this->shared() && this->pie()) |
1229 | gold_fatal(_("-shared and -pie are incompatible")); | |
f9fa4a63 CC |
1230 | if (this->pie() && this->is_static()) |
1231 | gold_fatal(_("-pie and -static are incompatible")); | |
4e1e25e0 | 1232 | |
ee1fe73e ILT |
1233 | if (this->shared() && this->relocatable()) |
1234 | gold_fatal(_("-shared and -r are incompatible")); | |
374ad285 ILT |
1235 | if (this->pie() && this->relocatable()) |
1236 | gold_fatal(_("-pie and -r are incompatible")); | |
ee1fe73e | 1237 | |
886288f1 ILT |
1238 | if (!this->shared()) |
1239 | { | |
1240 | if (this->filter() != NULL) | |
1241 | gold_fatal(_("-F/--filter may not used without -shared")); | |
1242 | if (this->any_auxiliary()) | |
1243 | gold_fatal(_("-f/--auxiliary may not be used without -shared")); | |
1244 | } | |
1245 | ||
8c604651 CS |
1246 | // TODO: implement support for -retain-symbols-file with -r, if needed. |
1247 | if (this->relocatable() && this->retain_symbols_file()) | |
1248 | gold_fatal(_("-retain-symbols-file does not yet work with -r")); | |
1249 | ||
ee1fe73e | 1250 | if (this->oformat_enum() != General_options::OBJECT_FORMAT_ELF |
374ad285 ILT |
1251 | && (this->shared() |
1252 | || this->pie() | |
1253 | || this->relocatable())) | |
1254 | gold_fatal(_("binary output format not compatible " | |
1255 | "with -shared or -pie or -r")); | |
ee1fe73e | 1256 | |
c18476e7 ILT |
1257 | if (this->user_set_hash_bucket_empty_fraction() |
1258 | && (this->hash_bucket_empty_fraction() < 0.0 | |
1259 | || this->hash_bucket_empty_fraction() >= 1.0)) | |
1260 | gold_fatal(_("--hash-bucket-empty-fraction value %g out of range " | |
1261 | "[0.0, 1.0)"), | |
1262 | this->hash_bucket_empty_fraction()); | |
1263 | ||
8c21d9d3 | 1264 | if (this->implicit_incremental_ && this->incremental_mode_ == INCREMENTAL_OFF) |
266d0a74 | 1265 | gold_fatal(_("Options --incremental-changed, --incremental-unchanged, " |
bbc5ae17 | 1266 | "--incremental-unknown require the use of --incremental")); |
266d0a74 | 1267 | |
403a3331 CC |
1268 | // Check for options that are not compatible with incremental linking. |
1269 | // Where an option can be disabled without seriously changing the semantics | |
1270 | // of the link, we turn the option off; otherwise, we issue a fatal error. | |
1271 | ||
1272 | if (this->incremental_mode_ != INCREMENTAL_OFF) | |
1273 | { | |
1274 | if (this->relocatable()) | |
1275 | gold_fatal(_("incremental linking is not compatible with -r")); | |
1276 | if (this->emit_relocs()) | |
1277 | gold_fatal(_("incremental linking is not compatible with " | |
1278 | "--emit-relocs")); | |
1279 | if (this->has_plugins()) | |
1280 | gold_fatal(_("incremental linking is not compatible with --plugin")); | |
943c8b43 CC |
1281 | if (this->relro()) |
1282 | gold_fatal(_("incremental linking is not compatible with -z relro")); | |
403a3331 CC |
1283 | if (this->gc_sections()) |
1284 | { | |
1285 | gold_warning(_("ignoring --gc-sections for an incremental link")); | |
1286 | this->set_gc_sections(false); | |
1287 | } | |
1288 | if (this->icf_enabled()) | |
1289 | { | |
1290 | gold_warning(_("ignoring --icf for an incremental link")); | |
1291 | this->set_icf_status(ICF_NONE); | |
1292 | } | |
1293 | if (strcmp(this->compress_debug_sections(), "none") != 0) | |
1294 | { | |
1295 | gold_warning(_("ignoring --compress-debug-sections for an " | |
1296 | "incremental link")); | |
1297 | this->set_compress_debug_sections("none"); | |
1298 | } | |
1299 | } | |
1300 | ||
bbc5ae17 RM |
1301 | // --rosegment-gap implies --rosegment. |
1302 | if (this->user_set_rosegment_gap()) | |
1303 | this->set_rosegment(true); | |
1304 | ||
ee1fe73e | 1305 | // FIXME: we can/should be doing a lot more sanity checking here. |
e5756efb ILT |
1306 | } |
1307 | ||
ad2d6943 ILT |
1308 | // Search_directory methods. |
1309 | ||
1310 | // This is called if we have a sysroot. Apply the sysroot if | |
1311 | // appropriate. Record whether the directory is in the sysroot. | |
1312 | ||
1313 | void | |
1314 | Search_directory::add_sysroot(const char* sysroot, | |
bbc5ae17 | 1315 | const char* canonical_sysroot) |
ad2d6943 ILT |
1316 | { |
1317 | gold_assert(*sysroot != '\0'); | |
1318 | if (this->put_in_sysroot_) | |
1319 | { | |
1320 | if (!IS_DIR_SEPARATOR(this->name_[0]) | |
bbc5ae17 RM |
1321 | && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1])) |
1322 | this->name_ = '/' + this->name_; | |
ad2d6943 ILT |
1323 | this->name_ = sysroot + this->name_; |
1324 | this->is_in_sysroot_ = true; | |
1325 | } | |
1326 | else | |
1327 | { | |
1328 | // Check whether this entry is in the sysroot. To do this | |
1329 | // correctly, we need to use canonical names. Otherwise we will | |
1330 | // get confused by the ../../.. paths that gcc tends to use. | |
1331 | char* canonical_name = lrealpath(this->name_.c_str()); | |
1332 | int canonical_name_len = strlen(canonical_name); | |
1333 | int canonical_sysroot_len = strlen(canonical_sysroot); | |
1334 | if (canonical_name_len > canonical_sysroot_len | |
bbc5ae17 RM |
1335 | && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len])) |
1336 | { | |
1337 | canonical_name[canonical_sysroot_len] = '\0'; | |
1338 | if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0) | |
1339 | this->is_in_sysroot_ = true; | |
1340 | } | |
ad2d6943 ILT |
1341 | free(canonical_name); |
1342 | } | |
1343 | } | |
1344 | ||
dbe717ef ILT |
1345 | // Input_arguments methods. |
1346 | ||
1347 | // Add a file to the list. | |
1348 | ||
c7975edd | 1349 | Input_argument& |
cdc29364 | 1350 | Input_arguments::add_file(Input_file_argument& file) |
dbe717ef | 1351 | { |
cdc29364 | 1352 | file.set_arg_serial(++this->file_count_); |
b0193076 | 1353 | if (this->in_group_) |
dbe717ef | 1354 | { |
a3ad94ed ILT |
1355 | gold_assert(!this->input_argument_list_.empty()); |
1356 | gold_assert(this->input_argument_list_.back().is_group()); | |
c7975edd | 1357 | return this->input_argument_list_.back().group()->add_file(file); |
dbe717ef | 1358 | } |
c7975edd | 1359 | if (this->in_lib_) |
b0193076 RÁE |
1360 | { |
1361 | gold_assert(!this->input_argument_list_.empty()); | |
1362 | gold_assert(this->input_argument_list_.back().is_lib()); | |
c7975edd | 1363 | return this->input_argument_list_.back().lib()->add_file(file); |
b0193076 | 1364 | } |
c7975edd CC |
1365 | this->input_argument_list_.push_back(Input_argument(file)); |
1366 | return this->input_argument_list_.back(); | |
dbe717ef ILT |
1367 | } |
1368 | ||
1369 | // Start a group. | |
1370 | ||
1371 | void | |
1372 | Input_arguments::start_group() | |
1373 | { | |
ee1fe73e ILT |
1374 | if (this->in_group_) |
1375 | gold_fatal(_("May not nest groups")); | |
b0193076 RÁE |
1376 | if (this->in_lib_) |
1377 | gold_fatal(_("may not nest groups in libraries")); | |
dbe717ef ILT |
1378 | Input_file_group* group = new Input_file_group(); |
1379 | this->input_argument_list_.push_back(Input_argument(group)); | |
1380 | this->in_group_ = true; | |
1381 | } | |
1382 | ||
1383 | // End a group. | |
1384 | ||
1385 | void | |
1386 | Input_arguments::end_group() | |
1387 | { | |
ee1fe73e ILT |
1388 | if (!this->in_group_) |
1389 | gold_fatal(_("Group end without group start")); | |
dbe717ef ILT |
1390 | this->in_group_ = false; |
1391 | } | |
1392 | ||
b0193076 RÁE |
1393 | // Start a lib. |
1394 | ||
1395 | void | |
1396 | Input_arguments::start_lib(const Position_dependent_options& options) | |
1397 | { | |
1398 | if (this->in_lib_) | |
1399 | gold_fatal(_("may not nest libraries")); | |
1400 | if (this->in_group_) | |
1401 | gold_fatal(_("may not nest libraries in groups")); | |
1402 | Input_file_lib* lib = new Input_file_lib(options); | |
1403 | this->input_argument_list_.push_back(Input_argument(lib)); | |
1404 | this->in_lib_ = true; | |
1405 | } | |
1406 | ||
1407 | // End a lib. | |
1408 | ||
1409 | void | |
1410 | Input_arguments::end_lib() | |
1411 | { | |
1412 | if (!this->in_lib_) | |
1413 | gold_fatal(_("lib end without lib start")); | |
1414 | this->in_lib_ = false; | |
1415 | } | |
1416 | ||
ead1e424 | 1417 | // Command_line options. |
bae7f79e | 1418 | |
a5dc0706 | 1419 | Command_line::Command_line() |
bae7f79e ILT |
1420 | { |
1421 | } | |
1422 | ||
293c1386 CC |
1423 | // Pre_options is the hook that sets the ready_to_register flag. |
1424 | ||
1425 | Command_line::Pre_options::Pre_options() | |
1426 | { | |
1427 | gold::options::ready_to_register = true; | |
1428 | } | |
1429 | ||
ee1fe73e ILT |
1430 | // Process the command line options. For process_one_option, i is the |
1431 | // index of argv to process next, and must be an option (that is, | |
1432 | // start with a dash). The return value is the index of the next | |
1433 | // option to process (i+1 or i+2, or argc to indicate processing is | |
1434 | // done). no_more_options is set to true if (and when) "--" is seen | |
1435 | // as an option. | |
bae7f79e | 1436 | |
a0451b38 | 1437 | int |
ee1fe73e | 1438 | Command_line::process_one_option(int argc, const char** argv, int i, |
bbc5ae17 | 1439 | bool* no_more_options) |
bae7f79e | 1440 | { |
ee1fe73e | 1441 | gold_assert(argv[i][0] == '-' && !(*no_more_options)); |
a0451b38 | 1442 | |
ee1fe73e ILT |
1443 | // If we are reading "--", then just set no_more_options and return. |
1444 | if (argv[i][1] == '-' && argv[i][2] == '\0') | |
bae7f79e | 1445 | { |
ee1fe73e | 1446 | *no_more_options = true; |
a0451b38 ILT |
1447 | return i + 1; |
1448 | } | |
bae7f79e | 1449 | |
ee1fe73e ILT |
1450 | int new_i = i; |
1451 | options::One_option* option = NULL; | |
1452 | const char* arg = NULL; | |
bae7f79e | 1453 | |
ee1fe73e ILT |
1454 | // First, try to process argv as a long option. |
1455 | option = parse_long_option(argc, argv, false, &arg, &new_i); | |
1456 | if (option) | |
a0451b38 | 1457 | { |
ee1fe73e ILT |
1458 | option->reader->parse_to_value(argv[i], arg, this, &this->options_); |
1459 | return new_i; | |
a0451b38 | 1460 | } |
bae7f79e | 1461 | |
ee1fe73e ILT |
1462 | // Now, try to process argv as a short option. Since several short |
1463 | // options can be combined in one argv, we may have to parse a lot | |
1464 | // until we're done reading this argv. | |
1465 | int pos_in_argv_i = 1; | |
1466 | while (new_i == i) | |
a0451b38 | 1467 | { |
ee1fe73e ILT |
1468 | option = parse_short_option(argc, argv, pos_in_argv_i, &arg, &new_i); |
1469 | if (!option) | |
bbc5ae17 | 1470 | break; |
ee1fe73e ILT |
1471 | option->reader->parse_to_value(argv[i], arg, this, &this->options_); |
1472 | ++pos_in_argv_i; | |
a0451b38 | 1473 | } |
ee1fe73e ILT |
1474 | if (option) |
1475 | return new_i; | |
a0451b38 | 1476 | |
ee1fe73e ILT |
1477 | // I guess it's neither a long option nor a short option. |
1478 | usage(_("unknown option"), argv[i]); | |
1479 | return argc; | |
a0451b38 | 1480 | } |
bae7f79e | 1481 | |
bae7f79e | 1482 | |
a0451b38 | 1483 | void |
ee1fe73e | 1484 | Command_line::process(int argc, const char** argv) |
a0451b38 ILT |
1485 | { |
1486 | bool no_more_options = false; | |
1487 | int i = 0; | |
1488 | while (i < argc) | |
ead1e424 | 1489 | { |
ee1fe73e ILT |
1490 | this->position_options_.copy_from_options(this->options()); |
1491 | if (no_more_options || argv[i][0] != '-') | |
bbc5ae17 | 1492 | { |
ae3b5189 CD |
1493 | Input_file_argument file(argv[i], |
1494 | Input_file_argument::INPUT_FILE_TYPE_FILE, | |
1495 | "", false, this->position_options_); | |
bbc5ae17 RM |
1496 | this->inputs_.add_file(file); |
1497 | ++i; | |
1498 | } | |
bae7f79e | 1499 | else |
bbc5ae17 | 1500 | i = process_one_option(argc, argv, i, &no_more_options); |
bae7f79e | 1501 | } |
bae7f79e | 1502 | |
dbe717ef | 1503 | if (this->inputs_.in_group()) |
ee1fe73e ILT |
1504 | { |
1505 | fprintf(stderr, _("%s: missing group end\n"), program_name); | |
1506 | usage(); | |
1507 | } | |
bae7f79e | 1508 | |
ee1fe73e ILT |
1509 | // Normalize the options and ensure they don't contradict each other. |
1510 | this->options_.finalize(); | |
bae7f79e | 1511 | } |
61ba1cf9 | 1512 | |
6affe781 ILT |
1513 | // Finalize the version script options and return them. |
1514 | ||
1515 | const Version_script_info& | |
1516 | Command_line::version_script() | |
1517 | { | |
1518 | this->options_.finalize_dynamic_list(); | |
1519 | Version_script_info* vsi = this->script_options_.version_script_info(); | |
1520 | vsi->finalize(); | |
11e32464 | 1521 | return *vsi; |
6affe781 ILT |
1522 | } |
1523 | ||
61ba1cf9 | 1524 | } // End namespace gold. |