Commit | Line | Data |
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bae7f79e ILT |
1 | // options.c -- handle command line options for gold |
2 | ||
4b95cf5c | 3 | // Copyright (C) 2006-2014 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 | |
8c21d9d3 CC |
348 | void |
349 | General_options::parse_incremental(const char*, const char*, | |
bbc5ae17 | 350 | Command_line*) |
8c21d9d3 CC |
351 | { |
352 | this->incremental_mode_ = INCREMENTAL_AUTO; | |
353 | } | |
354 | ||
355 | void | |
356 | General_options::parse_no_incremental(const char*, const char*, | |
bbc5ae17 | 357 | Command_line*) |
8c21d9d3 CC |
358 | { |
359 | this->incremental_mode_ = INCREMENTAL_OFF; | |
360 | } | |
361 | ||
362 | void | |
363 | General_options::parse_incremental_full(const char*, const char*, | |
364 | Command_line*) | |
365 | { | |
366 | this->incremental_mode_ = INCREMENTAL_FULL; | |
367 | } | |
368 | ||
369 | void | |
370 | General_options::parse_incremental_update(const char*, const char*, | |
371 | Command_line*) | |
372 | { | |
373 | this->incremental_mode_ = INCREMENTAL_UPDATE; | |
374 | } | |
375 | ||
266d0a74 ILT |
376 | void |
377 | General_options::parse_incremental_changed(const char*, const char*, | |
bbc5ae17 | 378 | Command_line*) |
266d0a74 ILT |
379 | { |
380 | this->implicit_incremental_ = true; | |
381 | this->incremental_disposition_ = INCREMENTAL_CHANGED; | |
382 | } | |
383 | ||
384 | void | |
385 | General_options::parse_incremental_unchanged(const char*, const char*, | |
bbc5ae17 | 386 | Command_line*) |
266d0a74 ILT |
387 | { |
388 | this->implicit_incremental_ = true; | |
389 | this->incremental_disposition_ = INCREMENTAL_UNCHANGED; | |
390 | } | |
391 | ||
392 | void | |
393 | General_options::parse_incremental_unknown(const char*, const char*, | |
bbc5ae17 | 394 | Command_line*) |
266d0a74 ILT |
395 | { |
396 | this->implicit_incremental_ = true; | |
397 | this->incremental_disposition_ = INCREMENTAL_CHECK; | |
398 | } | |
399 | ||
221597a5 CC |
400 | void |
401 | General_options::parse_incremental_startup_unchanged(const char*, const char*, | |
402 | Command_line*) | |
403 | { | |
404 | this->implicit_incremental_ = true; | |
405 | this->incremental_startup_disposition_ = INCREMENTAL_UNCHANGED; | |
406 | } | |
407 | ||
ee1fe73e ILT |
408 | void |
409 | General_options::parse_library(const char*, const char* arg, | |
bbc5ae17 | 410 | Command_line* cmdline) |
ee1fe73e | 411 | { |
ae3b5189 | 412 | Input_file_argument::Input_file_type type; |
ca09d69a | 413 | const char* name; |
ae3b5189 CD |
414 | if (arg[0] == ':') |
415 | { | |
416 | type = Input_file_argument::INPUT_FILE_TYPE_SEARCHED_FILE; | |
417 | name = arg + 1; | |
418 | } | |
419 | else | |
420 | { | |
421 | type = Input_file_argument::INPUT_FILE_TYPE_LIBRARY; | |
422 | name = arg; | |
423 | } | |
424 | Input_file_argument file(name, type, "", false, *this); | |
ee1fe73e ILT |
425 | cmdline->inputs().add_file(file); |
426 | } | |
427 | ||
89fc3421 CC |
428 | #ifdef ENABLE_PLUGINS |
429 | void | |
430 | General_options::parse_plugin(const char*, const char* arg, | |
bbc5ae17 | 431 | Command_line*) |
89fc3421 CC |
432 | { |
433 | this->add_plugin(arg); | |
434 | } | |
4674ecfc CC |
435 | |
436 | // Parse --plugin-opt. | |
437 | ||
438 | void | |
439 | General_options::parse_plugin_opt(const char*, const char* arg, | |
bbc5ae17 | 440 | Command_line*) |
4674ecfc CC |
441 | { |
442 | this->add_plugin_option(arg); | |
443 | } | |
89fc3421 CC |
444 | #endif // ENABLE_PLUGINS |
445 | ||
ee1fe73e ILT |
446 | void |
447 | General_options::parse_R(const char* option, const char* arg, | |
bbc5ae17 | 448 | Command_line* cmdline) |
88dd47ac | 449 | { |
88dd47ac | 450 | struct stat s; |
ee1fe73e ILT |
451 | if (::stat(arg, &s) != 0 || S_ISDIR(s.st_mode)) |
452 | this->add_to_rpath(arg); | |
88dd47ac | 453 | else |
ee1fe73e | 454 | this->parse_just_symbols(option, arg, cmdline); |
88dd47ac ILT |
455 | } |
456 | ||
ee1fe73e ILT |
457 | void |
458 | General_options::parse_just_symbols(const char*, const char* arg, | |
bbc5ae17 | 459 | Command_line* cmdline) |
88dd47ac | 460 | { |
ae3b5189 CD |
461 | Input_file_argument file(arg, Input_file_argument::INPUT_FILE_TYPE_FILE, |
462 | "", true, *this); | |
ee1fe73e | 463 | cmdline->inputs().add_file(file); |
88dd47ac ILT |
464 | } |
465 | ||
a192ba05 ILT |
466 | // Handle --section-start. |
467 | ||
468 | void | |
469 | General_options::parse_section_start(const char*, const char* arg, | |
470 | Command_line*) | |
471 | { | |
472 | const char* eq = strchr(arg, '='); | |
473 | if (eq == NULL) | |
474 | { | |
475 | gold_error(_("invalid argument to --section-start; " | |
476 | "must be SECTION=ADDRESS")); | |
477 | return; | |
478 | } | |
479 | ||
480 | std::string section_name(arg, eq - arg); | |
481 | ||
482 | ++eq; | |
483 | const char* val_start = eq; | |
484 | if (eq[0] == '0' && (eq[1] == 'x' || eq[1] == 'X')) | |
485 | eq += 2; | |
486 | if (*eq == '\0') | |
487 | { | |
488 | gold_error(_("--section-start address missing")); | |
489 | return; | |
490 | } | |
491 | uint64_t addr = 0; | |
492 | hex_init(); | |
493 | for (; *eq != '\0'; ++eq) | |
494 | { | |
495 | if (!hex_p(*eq)) | |
496 | { | |
497 | gold_error(_("--section-start argument %s is not a valid hex number"), | |
498 | val_start); | |
499 | return; | |
500 | } | |
501 | addr <<= 4; | |
502 | addr += hex_value(*eq); | |
503 | } | |
504 | ||
505 | this->section_starts_[section_name] = addr; | |
506 | } | |
507 | ||
508 | // Look up a --section-start value. | |
509 | ||
510 | bool | |
511 | General_options::section_start(const char* secname, uint64_t* paddr) const | |
512 | { | |
513 | if (this->section_starts_.empty()) | |
514 | return false; | |
515 | std::map<std::string, uint64_t>::const_iterator p = | |
516 | this->section_starts_.find(secname); | |
517 | if (p == this->section_starts_.end()) | |
518 | return false; | |
519 | *paddr = p->second; | |
520 | return true; | |
521 | } | |
522 | ||
ee1fe73e ILT |
523 | void |
524 | General_options::parse_static(const char*, const char*, Command_line*) | |
3c2fafa5 | 525 | { |
ee1fe73e | 526 | this->set_static(true); |
09124467 ILT |
527 | } |
528 | ||
ee1fe73e ILT |
529 | void |
530 | General_options::parse_script(const char*, const char* arg, | |
bbc5ae17 | 531 | Command_line* cmdline) |
09124467 | 532 | { |
ee1fe73e ILT |
533 | if (!read_commandline_script(arg, cmdline)) |
534 | gold::gold_fatal(_("unable to parse script file %s"), arg); | |
61ba1cf9 ILT |
535 | } |
536 | ||
ee1fe73e ILT |
537 | void |
538 | General_options::parse_version_script(const char*, const char* arg, | |
bbc5ae17 | 539 | Command_line* cmdline) |
ead1e424 | 540 | { |
ee1fe73e ILT |
541 | if (!read_version_script(arg, cmdline)) |
542 | gold::gold_fatal(_("unable to parse version script file %s"), arg); | |
ead1e424 ILT |
543 | } |
544 | ||
c82fbeee CS |
545 | void |
546 | General_options::parse_dynamic_list(const char*, const char* arg, | |
bbc5ae17 | 547 | Command_line* cmdline) |
c82fbeee CS |
548 | { |
549 | if (!read_dynamic_list(arg, cmdline, &this->dynamic_list_)) | |
550 | gold::gold_fatal(_("unable to parse dynamic-list script file %s"), arg); | |
fd834e57 | 551 | this->have_dynamic_list_ = true; |
c82fbeee CS |
552 | } |
553 | ||
ee1fe73e ILT |
554 | void |
555 | General_options::parse_start_group(const char*, const char*, | |
bbc5ae17 | 556 | Command_line* cmdline) |
ee1fe73e ILT |
557 | { |
558 | cmdline->inputs().start_group(); | |
559 | } | |
ead1e424 | 560 | |
ee1fe73e ILT |
561 | void |
562 | General_options::parse_end_group(const char*, const char*, | |
bbc5ae17 | 563 | Command_line* cmdline) |
ead1e424 | 564 | { |
ee1fe73e | 565 | cmdline->inputs().end_group(); |
ead1e424 ILT |
566 | } |
567 | ||
b0193076 RÁE |
568 | void |
569 | General_options::parse_start_lib(const char*, const char*, | |
bbc5ae17 | 570 | Command_line* cmdline) |
b0193076 RÁE |
571 | { |
572 | cmdline->inputs().start_lib(cmdline->position_dependent_options()); | |
573 | } | |
574 | ||
575 | void | |
576 | General_options::parse_end_lib(const char*, const char*, | |
bbc5ae17 | 577 | Command_line* cmdline) |
b0193076 RÁE |
578 | { |
579 | cmdline->inputs().end_lib(); | |
580 | } | |
581 | ||
65514900 | 582 | // The function add_excluded_libs() in ld/ldlang.c of GNU ld breaks up a list |
9b547ce6 | 583 | // of names separated by commas or colons and puts them in a linked list. |
65514900 CC |
584 | // We implement the same parsing of names here but store names in an unordered |
585 | // map to speed up searching of names. | |
586 | ||
587 | void | |
588 | General_options::parse_exclude_libs(const char*, const char* arg, | |
bbc5ae17 | 589 | Command_line*) |
65514900 | 590 | { |
ca09d69a | 591 | const char* p = arg; |
65514900 CC |
592 | |
593 | while (*p != '\0') | |
594 | { | |
595 | size_t length = strcspn(p, ",:"); | |
596 | this->excluded_libs_.insert(std::string(p, length)); | |
597 | p += (p[length] ? length + 1 : length); | |
598 | } | |
599 | } | |
600 | ||
601 | // The checking logic is based on the function check_excluded_libs() in | |
602 | // ld/ldlang.c of GNU ld but our implementation is different because we use | |
603 | // an unordered map instead of a linked list, which is what GNU ld uses. GNU | |
604 | // ld searches sequentially in the excluded libs list. For a given archive, | |
605 | // a match is found if the archive's name matches exactly one of the list | |
606 | // entry or if the archive's name is of the form FOO.a and FOO matches exactly | |
607 | // one of the list entry. An entry "ALL" in the list is considered as a | |
608 | // wild-card and matches any given name. | |
609 | ||
610 | bool | |
ca09d69a | 611 | General_options::check_excluded_libs(const std::string &name) const |
65514900 CC |
612 | { |
613 | Unordered_set<std::string>::const_iterator p; | |
614 | ||
615 | // Exit early for the most common case. | |
616 | if (excluded_libs_.empty()) | |
617 | return false; | |
618 | ||
619 | // If we see "ALL", all archives are excluded from automatic export. | |
620 | p = excluded_libs_.find(std::string("ALL")); | |
621 | if (p != excluded_libs_.end()) | |
622 | return true; | |
623 | ||
2fdd743f | 624 | // First strip off any directories in name. |
ca09d69a | 625 | const char* basename = lbasename(name.c_str()); |
2fdd743f | 626 | |
65514900 | 627 | // Try finding an exact match. |
2fdd743f | 628 | p = excluded_libs_.find(std::string(basename)); |
65514900 CC |
629 | if (p != excluded_libs_.end()) |
630 | return true; | |
631 | ||
632 | // Try matching NAME without ".a" at the end. | |
2fdd743f | 633 | size_t length = strlen(basename); |
65514900 | 634 | if ((length >= 2) |
2fdd743f DK |
635 | && (basename[length - 2] == '.') |
636 | && (basename[length - 1] == 'a')) | |
65514900 | 637 | { |
2fdd743f | 638 | p = excluded_libs_.find(std::string(basename, length - 2)); |
65514900 CC |
639 | if (p != excluded_libs_.end()) |
640 | return true; | |
641 | } | |
642 | ||
643 | return false; | |
644 | } | |
645 | ||
e6a307ba ILT |
646 | // Recognize input and output target names. The GNU linker accepts |
647 | // these with --format and --oformat. This code is intended to be | |
648 | // minimally compatible. In practice for an ELF target this would be | |
649 | // the same target as the input files; that name always start with | |
650 | // "elf". Non-ELF targets would be "srec", "symbolsrec", "tekhex", | |
651 | // "binary", "ihex". | |
652 | ||
653 | General_options::Object_format | |
654 | General_options::string_to_object_format(const char* arg) | |
655 | { | |
956b03bb | 656 | if (strncmp(arg, "elf", 3) == 0 || strcmp(arg, "default") == 0) |
e6a307ba ILT |
657 | return gold::General_options::OBJECT_FORMAT_ELF; |
658 | else if (strcmp(arg, "binary") == 0) | |
659 | return gold::General_options::OBJECT_FORMAT_BINARY; | |
660 | else | |
661 | { | |
662 | gold::gold_error(_("format '%s' not supported; treating as elf " | |
bbc5ae17 RM |
663 | "(supported formats: elf, binary)"), |
664 | arg); | |
e6a307ba ILT |
665 | return gold::General_options::OBJECT_FORMAT_ELF; |
666 | } | |
667 | } | |
668 | ||
9b2fd367 DK |
669 | void |
670 | General_options::parse_fix_v4bx(const char*, const char*, | |
bbc5ae17 | 671 | Command_line*) |
9b2fd367 DK |
672 | { |
673 | this->fix_v4bx_ = FIX_V4BX_REPLACE; | |
674 | } | |
675 | ||
676 | void | |
677 | General_options::parse_fix_v4bx_interworking(const char*, const char*, | |
678 | Command_line*) | |
679 | { | |
680 | this->fix_v4bx_ = FIX_V4BX_INTERWORKING; | |
681 | } | |
682 | ||
7296d933 DK |
683 | void |
684 | General_options::parse_EB(const char*, const char*, Command_line*) | |
685 | { | |
686 | this->endianness_ = ENDIANNESS_BIG; | |
687 | } | |
688 | ||
689 | void | |
690 | General_options::parse_EL(const char*, const char*, Command_line*) | |
691 | { | |
692 | this->endianness_ = ENDIANNESS_LITTLE; | |
693 | } | |
694 | ||
ee1fe73e | 695 | } // End namespace gold. |
bae7f79e | 696 | |
ee1fe73e | 697 | namespace |
bae7f79e | 698 | { |
bae7f79e | 699 | |
ee1fe73e ILT |
700 | void |
701 | usage() | |
702 | { | |
703 | fprintf(stderr, | |
bbc5ae17 RM |
704 | _("%s: use the --help option for usage information\n"), |
705 | gold::program_name); | |
ee1fe73e ILT |
706 | ::exit(EXIT_FAILURE); |
707 | } | |
bae7f79e | 708 | |
ee1fe73e | 709 | void |
ca09d69a | 710 | usage(const char* msg, const char* opt) |
ee1fe73e ILT |
711 | { |
712 | fprintf(stderr, | |
bbc5ae17 RM |
713 | _("%s: %s: %s\n"), |
714 | gold::program_name, opt, msg); | |
ee1fe73e | 715 | usage(); |
bae7f79e ILT |
716 | } |
717 | ||
ad2d6943 ILT |
718 | // If the default sysroot is relocatable, try relocating it based on |
719 | // the prefix FROM. | |
720 | ||
fd9d194f | 721 | static char* |
ad2d6943 ILT |
722 | get_relative_sysroot(const char* from) |
723 | { | |
724 | char* path = make_relative_prefix(gold::program_name, from, | |
bbc5ae17 | 725 | TARGET_SYSTEM_ROOT); |
ad2d6943 ILT |
726 | if (path != NULL) |
727 | { | |
728 | struct stat s; | |
729 | if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode)) | |
bbc5ae17 | 730 | return path; |
ad2d6943 ILT |
731 | free(path); |
732 | } | |
733 | ||
734 | return NULL; | |
735 | } | |
736 | ||
737 | // Return the default sysroot. This is set by the --with-sysroot | |
ee1fe73e ILT |
738 | // option to configure. Note we do not free the return value of |
739 | // get_relative_sysroot, which is a small memory leak, but is | |
740 | // necessary since we store this pointer directly in General_options. | |
ad2d6943 | 741 | |
fd9d194f | 742 | static const char* |
ad2d6943 ILT |
743 | get_default_sysroot() |
744 | { | |
745 | const char* sysroot = TARGET_SYSTEM_ROOT; | |
746 | if (*sysroot == '\0') | |
ee1fe73e | 747 | return NULL; |
ad2d6943 ILT |
748 | |
749 | if (TARGET_SYSTEM_ROOT_RELOCATABLE) | |
750 | { | |
ee1fe73e | 751 | char* path = get_relative_sysroot(BINDIR); |
ad2d6943 | 752 | if (path == NULL) |
bbc5ae17 | 753 | path = get_relative_sysroot(TOOLBINDIR); |
ad2d6943 | 754 | if (path != NULL) |
bbc5ae17 | 755 | return path; |
ad2d6943 ILT |
756 | } |
757 | ||
758 | return sysroot; | |
759 | } | |
760 | ||
ee1fe73e ILT |
761 | // Parse a long option. Such options have the form |
762 | // <-|--><option>[=arg]. If "=arg" is not present but the option | |
763 | // takes an argument, the next word is taken to the be the argument. | |
764 | // If equals_only is set, then only the <option>=<arg> form is | |
765 | // accepted, not the <option><space><arg> form. Returns a One_option | |
766 | // struct or NULL if argv[i] cannot be parsed as a long option. In | |
767 | // the not-NULL case, *arg is set to the option's argument (NULL if | |
768 | // the option takes no argument), and *i is advanced past this option. | |
769 | // NOTE: it is safe for argv and arg to point to the same place. | |
770 | gold::options::One_option* | |
771 | parse_long_option(int argc, const char** argv, bool equals_only, | |
bbc5ae17 | 772 | const char** arg, int* i) |
61ba1cf9 | 773 | { |
ee1fe73e | 774 | const char* const this_argv = argv[*i]; |
bae7f79e | 775 | |
ee1fe73e ILT |
776 | const char* equals = strchr(this_argv, '='); |
777 | const char* option_start = this_argv + strspn(this_argv, "-"); | |
778 | std::string option(option_start, | |
bbc5ae17 | 779 | equals ? equals - option_start : strlen(option_start)); |
35cdfc9a | 780 | |
ee1fe73e ILT |
781 | gold::options::Option_map::iterator it |
782 | = gold::options::long_options->find(option); | |
783 | if (it == gold::options::long_options->end()) | |
784 | return NULL; | |
35cdfc9a | 785 | |
ee1fe73e | 786 | gold::options::One_option* retval = it->second; |
c7912668 | 787 | |
ee1fe73e ILT |
788 | // If the dash-count doesn't match, we fail. |
789 | if (this_argv[0] != '-') // no dashes at all: had better be "-z <longopt>" | |
790 | { | |
791 | if (retval->dashes != gold::options::DASH_Z) | |
bbc5ae17 | 792 | return NULL; |
ee1fe73e ILT |
793 | } |
794 | else if (this_argv[1] != '-') // one dash | |
795 | { | |
796 | if (retval->dashes != gold::options::ONE_DASH | |
bbc5ae17 RM |
797 | && retval->dashes != gold::options::EXACTLY_ONE_DASH |
798 | && retval->dashes != gold::options::TWO_DASHES) | |
799 | return NULL; | |
ee1fe73e ILT |
800 | } |
801 | else // two dashes (or more!) | |
802 | { | |
803 | if (retval->dashes != gold::options::TWO_DASHES | |
bbc5ae17 RM |
804 | && retval->dashes != gold::options::EXACTLY_TWO_DASHES |
805 | && retval->dashes != gold::options::ONE_DASH) | |
806 | return NULL; | |
ee1fe73e | 807 | } |
bae7f79e | 808 | |
ee1fe73e ILT |
809 | // Now that we know the option is good (or else bad in a way that |
810 | // will cause us to die), increment i to point past this argv. | |
811 | ++(*i); | |
bae7f79e | 812 | |
ee1fe73e ILT |
813 | // Figure out the option's argument, if any. |
814 | if (!retval->takes_argument()) | |
815 | { | |
816 | if (equals) | |
bbc5ae17 | 817 | usage(_("unexpected argument"), this_argv); |
ee1fe73e | 818 | else |
bbc5ae17 | 819 | *arg = NULL; |
ee1fe73e ILT |
820 | } |
821 | else | |
822 | { | |
823 | if (equals) | |
bbc5ae17 | 824 | *arg = equals + 1; |
086a1841 ILT |
825 | else if (retval->takes_optional_argument()) |
826 | *arg = retval->default_value; | |
ee1fe73e | 827 | else if (*i < argc && !equals_only) |
bbc5ae17 | 828 | *arg = argv[(*i)++]; |
ee1fe73e | 829 | else |
bbc5ae17 | 830 | usage(_("missing argument"), this_argv); |
ee1fe73e | 831 | } |
516cb3d0 | 832 | |
ee1fe73e ILT |
833 | return retval; |
834 | } | |
835 | ||
836 | // Parse a short option. Such options have the form -<option>[arg]. | |
837 | // If "arg" is not present but the option takes an argument, the next | |
838 | // word is taken to the be the argument. If the option does not take | |
839 | // an argument, it may be followed by another short option. Returns a | |
840 | // One_option struct or NULL if argv[i] cannot be parsed as a short | |
841 | // option. In the not-NULL case, *arg is set to the option's argument | |
842 | // (NULL if the option takes no argument), and *i is advanced past | |
843 | // this option. This function keeps *i the same if we parsed a short | |
844 | // option that does not take an argument, that looks to be followed by | |
845 | // another short option in the same word. | |
846 | gold::options::One_option* | |
847 | parse_short_option(int argc, const char** argv, int pos_in_argv_i, | |
bbc5ae17 | 848 | const char** arg, int* i) |
ee1fe73e ILT |
849 | { |
850 | const char* const this_argv = argv[*i]; | |
851 | ||
852 | if (this_argv[0] != '-') | |
853 | return NULL; | |
854 | ||
855 | // We handle -z as a special case. | |
856 | static gold::options::One_option dash_z("", gold::options::DASH_Z, | |
bbc5ae17 | 857 | 'z', "", NULL, "Z-OPTION", false, |
086a1841 | 858 | NULL); |
ee1fe73e ILT |
859 | gold::options::One_option* retval = NULL; |
860 | if (this_argv[pos_in_argv_i] == 'z') | |
861 | retval = &dash_z; | |
862 | else | |
863 | { | |
864 | const int char_as_int = static_cast<int>(this_argv[pos_in_argv_i]); | |
865 | if (char_as_int > 0 && char_as_int < 128) | |
bbc5ae17 | 866 | retval = gold::options::short_options[char_as_int]; |
ee1fe73e | 867 | } |
516cb3d0 | 868 | |
ee1fe73e ILT |
869 | if (retval == NULL) |
870 | return NULL; | |
35cdfc9a | 871 | |
ee1fe73e ILT |
872 | // Figure out the option's argument, if any. |
873 | if (!retval->takes_argument()) | |
cd72c291 | 874 | { |
ee1fe73e ILT |
875 | *arg = NULL; |
876 | // We only advance past this argument if it's the only one in argv. | |
877 | if (this_argv[pos_in_argv_i + 1] == '\0') | |
bbc5ae17 | 878 | ++(*i); |
cd72c291 ILT |
879 | } |
880 | else | |
ee1fe73e ILT |
881 | { |
882 | // If we take an argument, we'll eat up this entire argv entry. | |
883 | ++(*i); | |
884 | if (this_argv[pos_in_argv_i + 1] != '\0') | |
bbc5ae17 | 885 | *arg = this_argv + pos_in_argv_i + 1; |
086a1841 ILT |
886 | else if (retval->takes_optional_argument()) |
887 | *arg = retval->default_value; | |
ee1fe73e | 888 | else if (*i < argc) |
bbc5ae17 | 889 | *arg = argv[(*i)++]; |
ee1fe73e | 890 | else |
bbc5ae17 | 891 | usage(_("missing argument"), this_argv); |
ee1fe73e | 892 | } |
cd72c291 | 893 | |
ee1fe73e ILT |
894 | // If we're a -z option, we need to parse our argument as a |
895 | // long-option, e.g. "-z stacksize=8192". | |
896 | if (retval == &dash_z) | |
35cdfc9a | 897 | { |
ee1fe73e ILT |
898 | int dummy_i = 0; |
899 | const char* dash_z_arg = *arg; | |
900 | retval = parse_long_option(1, arg, true, arg, &dummy_i); | |
901 | if (retval == NULL) | |
bbc5ae17 | 902 | usage(_("unknown -z option"), dash_z_arg); |
35cdfc9a ILT |
903 | } |
904 | ||
ee1fe73e | 905 | return retval; |
c7912668 ILT |
906 | } |
907 | ||
ee1fe73e | 908 | } // End anonymous namespace. |
c7912668 | 909 | |
ee1fe73e | 910 | namespace gold |
c7912668 | 911 | { |
c7912668 | 912 | |
ee1fe73e | 913 | General_options::General_options() |
459c9f1c | 914 | : printed_version_(false), |
a192ba05 ILT |
915 | execstack_status_(EXECSTACK_FROM_INPUT), |
916 | icf_status_(ICF_NONE), | |
917 | static_(false), | |
918 | do_demangle_(false), | |
919 | plugins_(NULL), | |
920 | dynamic_list_(), | |
fd834e57 | 921 | have_dynamic_list_(false), |
8c21d9d3 | 922 | incremental_mode_(INCREMENTAL_OFF), |
221597a5 CC |
923 | incremental_disposition_(INCREMENTAL_STARTUP), |
924 | incremental_startup_disposition_(INCREMENTAL_CHECK), | |
a192ba05 ILT |
925 | implicit_incremental_(false), |
926 | excluded_libs_(), | |
927 | symbols_to_retain_(), | |
2fd9ae7a | 928 | section_starts_(), |
7296d933 DK |
929 | fix_v4bx_(FIX_V4BX_NONE), |
930 | endianness_(ENDIANNESS_NOT_SET) | |
ee1fe73e | 931 | { |
293c1386 CC |
932 | // Turn off option registration once construction is complete. |
933 | gold::options::ready_to_register = false; | |
ee1fe73e ILT |
934 | } |
935 | ||
936 | General_options::Object_format | |
937 | General_options::format_enum() const | |
938 | { | |
e6a307ba | 939 | return General_options::string_to_object_format(this->format()); |
ee1fe73e ILT |
940 | } |
941 | ||
942 | General_options::Object_format | |
943 | General_options::oformat_enum() const | |
944 | { | |
e6a307ba | 945 | return General_options::string_to_object_format(this->oformat()); |
35cdfc9a ILT |
946 | } |
947 | ||
ad2d6943 ILT |
948 | // Add the sysroot, if any, to the search paths. |
949 | ||
950 | void | |
951 | General_options::add_sysroot() | |
952 | { | |
ee1fe73e | 953 | if (this->sysroot() == NULL || this->sysroot()[0] == '\0') |
ad2d6943 | 954 | { |
ee1fe73e ILT |
955 | this->set_sysroot(get_default_sysroot()); |
956 | if (this->sysroot() == NULL || this->sysroot()[0] == '\0') | |
bbc5ae17 | 957 | return; |
ad2d6943 ILT |
958 | } |
959 | ||
ee1fe73e | 960 | char* canonical_sysroot = lrealpath(this->sysroot()); |
ad2d6943 | 961 | |
ee1fe73e ILT |
962 | for (Dir_list::iterator p = this->library_path_.value.begin(); |
963 | p != this->library_path_.value.end(); | |
ad2d6943 | 964 | ++p) |
ee1fe73e | 965 | p->add_sysroot(this->sysroot(), canonical_sysroot); |
ad2d6943 ILT |
966 | |
967 | free(canonical_sysroot); | |
968 | } | |
969 | ||
fd9d194f ILT |
970 | // Return whether FILENAME is in a system directory. |
971 | ||
972 | bool | |
973 | General_options::is_in_system_directory(const std::string& filename) const | |
974 | { | |
975 | for (Dir_list::const_iterator p = this->library_path_.value.begin(); | |
976 | p != this->library_path_.value.end(); | |
977 | ++p) | |
978 | { | |
979 | // We use a straight string comparison rather than calling | |
980 | // FILENAME_CMP because we are only interested in the cases | |
981 | // where we found the file in a system directory, which means | |
982 | // that we used the directory name as a prefix for a -L search. | |
983 | if (p->is_system_directory() | |
984 | && filename.compare(0, p->name().size(), p->name()) == 0) | |
985 | return true; | |
986 | } | |
987 | return false; | |
988 | } | |
989 | ||
4674ecfc | 990 | // Add a plugin to the list of plugins. |
89fc3421 CC |
991 | |
992 | void | |
4674ecfc | 993 | General_options::add_plugin(const char* filename) |
89fc3421 CC |
994 | { |
995 | if (this->plugins_ == NULL) | |
996 | this->plugins_ = new Plugin_manager(*this); | |
4674ecfc CC |
997 | this->plugins_->add_plugin(filename); |
998 | } | |
999 | ||
1000 | // Add a plugin option to a plugin. | |
1001 | ||
1002 | void | |
1003 | General_options::add_plugin_option(const char* arg) | |
1004 | { | |
1005 | if (this->plugins_ == NULL) | |
1006 | gold_fatal("--plugin-opt requires --plugin."); | |
1007 | this->plugins_->add_plugin_option(arg); | |
89fc3421 CC |
1008 | } |
1009 | ||
ee1fe73e ILT |
1010 | // Set up variables and other state that isn't set up automatically by |
1011 | // the parse routine, and ensure options don't contradict each other | |
1012 | // and are otherwise kosher. | |
e5756efb | 1013 | |
ee1fe73e ILT |
1014 | void |
1015 | General_options::finalize() | |
bc644c6c | 1016 | { |
ee1fe73e | 1017 | // Normalize the strip modifiers. They have a total order: |
62b01cb5 ILT |
1018 | // strip_all > strip_debug > strip_non_line > strip_debug_gdb. |
1019 | // If one is true, set all beneath it to true as well. | |
ee1fe73e ILT |
1020 | if (this->strip_all()) |
1021 | this->set_strip_debug(true); | |
1022 | if (this->strip_debug()) | |
62b01cb5 ILT |
1023 | this->set_strip_debug_non_line(true); |
1024 | if (this->strip_debug_non_line()) | |
ee1fe73e | 1025 | this->set_strip_debug_gdb(true); |
bc644c6c | 1026 | |
3b293544 CF |
1027 | if (this->Bshareable()) |
1028 | this->set_shared(true); | |
1029 | ||
ee1fe73e ILT |
1030 | // If the user specifies both -s and -r, convert the -s to -S. |
1031 | // -r requires us to keep externally visible symbols! | |
1032 | if (this->strip_all() && this->relocatable()) | |
1033 | { | |
1034 | this->set_strip_all(false); | |
1035 | gold_assert(this->strip_debug()); | |
1036 | } | |
bc644c6c | 1037 | |
ee1fe73e ILT |
1038 | // For us, -dc and -dp are synonyms for --define-common. |
1039 | if (this->dc()) | |
1040 | this->set_define_common(true); | |
1041 | if (this->dp()) | |
1042 | this->set_define_common(true); | |
1043 | ||
1044 | // We also set --define-common if we're not relocatable, as long as | |
1045 | // the user didn't explicitly ask for something different. | |
1046 | if (!this->user_set_define_common()) | |
1047 | this->set_define_common(!this->relocatable()); | |
1048 | ||
1049 | // execstack_status_ is a three-state variable; update it based on | |
1050 | // -z [no]execstack. | |
1051 | if (this->execstack()) | |
1052 | this->set_execstack_status(EXECSTACK_YES); | |
1053 | else if (this->noexecstack()) | |
1054 | this->set_execstack_status(EXECSTACK_NO); | |
1055 | ||
032ce4e9 ST |
1056 | // icf_status_ is a three-state variable; update it based on the |
1057 | // value of this->icf(). | |
1058 | if (strcmp(this->icf(), "none") == 0) | |
1059 | this->set_icf_status(ICF_NONE); | |
1060 | else if (strcmp(this->icf(), "safe") == 0) | |
1061 | this->set_icf_status(ICF_SAFE); | |
1062 | else | |
1063 | this->set_icf_status(ICF_ALL); | |
1064 | ||
086a1841 ILT |
1065 | // Handle the optional argument for --demangle. |
1066 | if (this->user_set_demangle()) | |
1067 | { | |
1068 | this->set_do_demangle(true); | |
1069 | const char* style = this->demangle(); | |
1070 | if (*style != '\0') | |
1071 | { | |
1072 | enum demangling_styles style_code; | |
1073 | ||
1074 | style_code = cplus_demangle_name_to_style(style); | |
1075 | if (style_code == unknown_demangling) | |
1076 | gold_fatal("unknown demangling style '%s'", style); | |
1077 | cplus_demangle_set_style(style_code); | |
1078 | } | |
1079 | } | |
1080 | else if (this->user_set_no_demangle()) | |
1081 | this->set_do_demangle(false); | |
1082 | else | |
1083 | { | |
1084 | // Testing COLLECT_NO_DEMANGLE makes our default demangling | |
1085 | // behaviour identical to that of gcc's linker wrapper. | |
1086 | this->set_do_demangle(getenv("COLLECT_NO_DEMANGLE") == NULL); | |
1087 | } | |
1088 | ||
7d9e3d98 ILT |
1089 | // -M is equivalent to "-Map -". |
1090 | if (this->print_map() && !this->user_set_Map()) | |
1091 | { | |
1092 | this->set_Map("-"); | |
1093 | this->set_user_set_Map(); | |
1094 | } | |
1095 | ||
af6156ef ILT |
1096 | // Using -n or -N implies -static. |
1097 | if (this->nmagic() || this->omagic()) | |
1098 | this->set_static(true); | |
1099 | ||
ee1fe73e ILT |
1100 | // If --thread_count is specified, it applies to |
1101 | // --thread-count-{initial,middle,final}, though it doesn't override | |
1102 | // them. | |
1103 | if (this->thread_count() > 0 && this->thread_count_initial() == 0) | |
1104 | this->set_thread_count_initial(this->thread_count()); | |
1105 | if (this->thread_count() > 0 && this->thread_count_middle() == 0) | |
1106 | this->set_thread_count_middle(this->thread_count()); | |
1107 | if (this->thread_count() > 0 && this->thread_count_final() == 0) | |
1108 | this->set_thread_count_final(this->thread_count()); | |
1109 | ||
09ffbbe0 ILT |
1110 | // Let's warn if you set the thread-count but we're going to ignore it. |
1111 | #ifndef ENABLE_THREADS | |
1112 | if (this->threads()) | |
1113 | { | |
1114 | gold_warning(_("ignoring --threads: " | |
1115 | "%s was compiled without thread support"), | |
1116 | program_name); | |
1117 | this->set_threads(false); | |
1118 | } | |
1119 | if (this->thread_count() > 0 || this->thread_count_initial() > 0 | |
1120 | || this->thread_count_middle() > 0 || this->thread_count_final() > 0) | |
1121 | gold_warning(_("ignoring --thread-count: " | |
bbc5ae17 RM |
1122 | "%s was compiled without thread support"), |
1123 | program_name); | |
09ffbbe0 ILT |
1124 | #endif |
1125 | ||
3f3cddf1 | 1126 | std::string libpath; |
706e1f5e ILT |
1127 | if (this->user_set_Y()) |
1128 | { | |
3f3cddf1 ILT |
1129 | libpath = this->Y(); |
1130 | if (libpath.compare(0, 2, "P,") == 0) | |
1131 | libpath.erase(0, 2); | |
1132 | } | |
1133 | else if (!this->nostdlib()) | |
1134 | { | |
1135 | #ifndef NATIVE_LINKER | |
1136 | #define NATIVE_LINKER 0 | |
1137 | #endif | |
1138 | const char* p = LIB_PATH; | |
1139 | if (strcmp(p, "::DEFAULT::") != 0) | |
1140 | libpath = p; | |
1141 | else if (NATIVE_LINKER | |
1142 | || this->user_set_sysroot() | |
1143 | || *TARGET_SYSTEM_ROOT != '\0') | |
1144 | { | |
1145 | this->add_to_library_path_with_sysroot("/lib"); | |
1146 | this->add_to_library_path_with_sysroot("/usr/lib"); | |
1147 | } | |
1148 | else | |
1149 | this->add_to_library_path_with_sysroot(TOOLLIBDIR); | |
1150 | } | |
706e1f5e | 1151 | |
3f3cddf1 ILT |
1152 | if (!libpath.empty()) |
1153 | { | |
706e1f5e ILT |
1154 | size_t pos = 0; |
1155 | size_t next_pos; | |
1156 | do | |
1157 | { | |
3f3cddf1 | 1158 | next_pos = libpath.find(':', pos); |
706e1f5e ILT |
1159 | size_t len = (next_pos == std::string::npos |
1160 | ? next_pos | |
1161 | : next_pos - pos); | |
1162 | if (len != 0) | |
3f3cddf1 | 1163 | this->add_to_library_path_with_sysroot(libpath.substr(pos, len)); |
706e1f5e ILT |
1164 | pos = next_pos + 1; |
1165 | } | |
1166 | while (next_pos != std::string::npos); | |
1167 | } | |
ee1fe73e | 1168 | |
8c604651 CS |
1169 | // Parse the contents of -retain-symbols-file into a set. |
1170 | if (this->retain_symbols_file()) | |
1171 | { | |
1172 | std::ifstream in; | |
1173 | in.open(this->retain_symbols_file()); | |
1174 | if (!in) | |
bbc5ae17 RM |
1175 | gold_fatal(_("unable to open -retain-symbols-file file %s: %s"), |
1176 | this->retain_symbols_file(), strerror(errno)); | |
8c604651 CS |
1177 | std::string line; |
1178 | std::getline(in, line); // this chops off the trailing \n, if any | |
1179 | while (in) | |
bbc5ae17 RM |
1180 | { |
1181 | if (!line.empty() && line[line.length() - 1] == '\r') // Windows | |
1182 | line.resize(line.length() - 1); | |
1183 | this->symbols_to_retain_.insert(line); | |
1184 | std::getline(in, line); | |
1185 | } | |
8c604651 CS |
1186 | } |
1187 | ||
e2153196 ILT |
1188 | // -Bgroup implies --unresolved-symbols=report-all. |
1189 | if (this->Bgroup() && !this->user_set_unresolved_symbols()) | |
1190 | this->set_unresolved_symbols("report-all"); | |
1191 | ||
1192 | // -shared implies --allow-shlib-undefined. Currently | |
1193 | // ---allow-shlib-undefined controls warnings issued based on the | |
1194 | // -symbol table. --unresolved-symbols controls warnings issued | |
1195 | // -based on relocations. | |
d7ab2a47 KVH |
1196 | if (this->shared() && !this->user_set_allow_shlib_undefined()) |
1197 | this->set_allow_shlib_undefined(true); | |
1198 | ||
ee1fe73e ILT |
1199 | // Normalize library_path() by adding the sysroot to all directories |
1200 | // in the path, as appropriate. | |
1201 | this->add_sysroot(); | |
1202 | ||
fd834e57 CC |
1203 | // --dynamic-list overrides -Bsymbolic and -Bsymbolic-functions. |
1204 | if (this->have_dynamic_list()) | |
1205 | { | |
1206 | this->set_Bsymbolic(false); | |
1207 | this->set_Bsymbolic_functions(false); | |
1208 | } | |
1209 | ||
ee1fe73e | 1210 | // Now that we've normalized the options, check for contradictory ones. |
4e1e25e0 CC |
1211 | if (this->shared() && this->is_static()) |
1212 | gold_fatal(_("-shared and -static are incompatible")); | |
374ad285 ILT |
1213 | if (this->shared() && this->pie()) |
1214 | gold_fatal(_("-shared and -pie are incompatible")); | |
f9fa4a63 CC |
1215 | if (this->pie() && this->is_static()) |
1216 | gold_fatal(_("-pie and -static are incompatible")); | |
4e1e25e0 | 1217 | |
ee1fe73e ILT |
1218 | if (this->shared() && this->relocatable()) |
1219 | gold_fatal(_("-shared and -r are incompatible")); | |
374ad285 ILT |
1220 | if (this->pie() && this->relocatable()) |
1221 | gold_fatal(_("-pie and -r are incompatible")); | |
ee1fe73e | 1222 | |
886288f1 ILT |
1223 | if (!this->shared()) |
1224 | { | |
1225 | if (this->filter() != NULL) | |
1226 | gold_fatal(_("-F/--filter may not used without -shared")); | |
1227 | if (this->any_auxiliary()) | |
1228 | gold_fatal(_("-f/--auxiliary may not be used without -shared")); | |
1229 | } | |
1230 | ||
8c604651 CS |
1231 | // TODO: implement support for -retain-symbols-file with -r, if needed. |
1232 | if (this->relocatable() && this->retain_symbols_file()) | |
1233 | gold_fatal(_("-retain-symbols-file does not yet work with -r")); | |
1234 | ||
ee1fe73e | 1235 | if (this->oformat_enum() != General_options::OBJECT_FORMAT_ELF |
374ad285 ILT |
1236 | && (this->shared() |
1237 | || this->pie() | |
1238 | || this->relocatable())) | |
1239 | gold_fatal(_("binary output format not compatible " | |
1240 | "with -shared or -pie or -r")); | |
ee1fe73e | 1241 | |
c18476e7 ILT |
1242 | if (this->user_set_hash_bucket_empty_fraction() |
1243 | && (this->hash_bucket_empty_fraction() < 0.0 | |
1244 | || this->hash_bucket_empty_fraction() >= 1.0)) | |
1245 | gold_fatal(_("--hash-bucket-empty-fraction value %g out of range " | |
1246 | "[0.0, 1.0)"), | |
1247 | this->hash_bucket_empty_fraction()); | |
1248 | ||
8c21d9d3 | 1249 | if (this->implicit_incremental_ && this->incremental_mode_ == INCREMENTAL_OFF) |
266d0a74 | 1250 | gold_fatal(_("Options --incremental-changed, --incremental-unchanged, " |
bbc5ae17 | 1251 | "--incremental-unknown require the use of --incremental")); |
266d0a74 | 1252 | |
403a3331 CC |
1253 | // Check for options that are not compatible with incremental linking. |
1254 | // Where an option can be disabled without seriously changing the semantics | |
1255 | // of the link, we turn the option off; otherwise, we issue a fatal error. | |
1256 | ||
1257 | if (this->incremental_mode_ != INCREMENTAL_OFF) | |
1258 | { | |
1259 | if (this->relocatable()) | |
1260 | gold_fatal(_("incremental linking is not compatible with -r")); | |
1261 | if (this->emit_relocs()) | |
1262 | gold_fatal(_("incremental linking is not compatible with " | |
1263 | "--emit-relocs")); | |
1264 | if (this->has_plugins()) | |
1265 | gold_fatal(_("incremental linking is not compatible with --plugin")); | |
1266 | if (this->gc_sections()) | |
1267 | { | |
1268 | gold_warning(_("ignoring --gc-sections for an incremental link")); | |
1269 | this->set_gc_sections(false); | |
1270 | } | |
1271 | if (this->icf_enabled()) | |
1272 | { | |
1273 | gold_warning(_("ignoring --icf for an incremental link")); | |
1274 | this->set_icf_status(ICF_NONE); | |
1275 | } | |
1276 | if (strcmp(this->compress_debug_sections(), "none") != 0) | |
1277 | { | |
1278 | gold_warning(_("ignoring --compress-debug-sections for an " | |
1279 | "incremental link")); | |
1280 | this->set_compress_debug_sections("none"); | |
1281 | } | |
1282 | } | |
1283 | ||
bbc5ae17 RM |
1284 | // --rosegment-gap implies --rosegment. |
1285 | if (this->user_set_rosegment_gap()) | |
1286 | this->set_rosegment(true); | |
1287 | ||
ee1fe73e | 1288 | // FIXME: we can/should be doing a lot more sanity checking here. |
e5756efb ILT |
1289 | } |
1290 | ||
ad2d6943 ILT |
1291 | // Search_directory methods. |
1292 | ||
1293 | // This is called if we have a sysroot. Apply the sysroot if | |
1294 | // appropriate. Record whether the directory is in the sysroot. | |
1295 | ||
1296 | void | |
1297 | Search_directory::add_sysroot(const char* sysroot, | |
bbc5ae17 | 1298 | const char* canonical_sysroot) |
ad2d6943 ILT |
1299 | { |
1300 | gold_assert(*sysroot != '\0'); | |
1301 | if (this->put_in_sysroot_) | |
1302 | { | |
1303 | if (!IS_DIR_SEPARATOR(this->name_[0]) | |
bbc5ae17 RM |
1304 | && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1])) |
1305 | this->name_ = '/' + this->name_; | |
ad2d6943 ILT |
1306 | this->name_ = sysroot + this->name_; |
1307 | this->is_in_sysroot_ = true; | |
1308 | } | |
1309 | else | |
1310 | { | |
1311 | // Check whether this entry is in the sysroot. To do this | |
1312 | // correctly, we need to use canonical names. Otherwise we will | |
1313 | // get confused by the ../../.. paths that gcc tends to use. | |
1314 | char* canonical_name = lrealpath(this->name_.c_str()); | |
1315 | int canonical_name_len = strlen(canonical_name); | |
1316 | int canonical_sysroot_len = strlen(canonical_sysroot); | |
1317 | if (canonical_name_len > canonical_sysroot_len | |
bbc5ae17 RM |
1318 | && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len])) |
1319 | { | |
1320 | canonical_name[canonical_sysroot_len] = '\0'; | |
1321 | if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0) | |
1322 | this->is_in_sysroot_ = true; | |
1323 | } | |
ad2d6943 ILT |
1324 | free(canonical_name); |
1325 | } | |
1326 | } | |
1327 | ||
dbe717ef ILT |
1328 | // Input_arguments methods. |
1329 | ||
1330 | // Add a file to the list. | |
1331 | ||
c7975edd | 1332 | Input_argument& |
cdc29364 | 1333 | Input_arguments::add_file(Input_file_argument& file) |
dbe717ef | 1334 | { |
cdc29364 | 1335 | file.set_arg_serial(++this->file_count_); |
b0193076 | 1336 | if (this->in_group_) |
dbe717ef | 1337 | { |
a3ad94ed ILT |
1338 | gold_assert(!this->input_argument_list_.empty()); |
1339 | gold_assert(this->input_argument_list_.back().is_group()); | |
c7975edd | 1340 | return this->input_argument_list_.back().group()->add_file(file); |
dbe717ef | 1341 | } |
c7975edd | 1342 | if (this->in_lib_) |
b0193076 RÁE |
1343 | { |
1344 | gold_assert(!this->input_argument_list_.empty()); | |
1345 | gold_assert(this->input_argument_list_.back().is_lib()); | |
c7975edd | 1346 | return this->input_argument_list_.back().lib()->add_file(file); |
b0193076 | 1347 | } |
c7975edd CC |
1348 | this->input_argument_list_.push_back(Input_argument(file)); |
1349 | return this->input_argument_list_.back(); | |
dbe717ef ILT |
1350 | } |
1351 | ||
1352 | // Start a group. | |
1353 | ||
1354 | void | |
1355 | Input_arguments::start_group() | |
1356 | { | |
ee1fe73e ILT |
1357 | if (this->in_group_) |
1358 | gold_fatal(_("May not nest groups")); | |
b0193076 RÁE |
1359 | if (this->in_lib_) |
1360 | gold_fatal(_("may not nest groups in libraries")); | |
dbe717ef ILT |
1361 | Input_file_group* group = new Input_file_group(); |
1362 | this->input_argument_list_.push_back(Input_argument(group)); | |
1363 | this->in_group_ = true; | |
1364 | } | |
1365 | ||
1366 | // End a group. | |
1367 | ||
1368 | void | |
1369 | Input_arguments::end_group() | |
1370 | { | |
ee1fe73e ILT |
1371 | if (!this->in_group_) |
1372 | gold_fatal(_("Group end without group start")); | |
dbe717ef ILT |
1373 | this->in_group_ = false; |
1374 | } | |
1375 | ||
b0193076 RÁE |
1376 | // Start a lib. |
1377 | ||
1378 | void | |
1379 | Input_arguments::start_lib(const Position_dependent_options& options) | |
1380 | { | |
1381 | if (this->in_lib_) | |
1382 | gold_fatal(_("may not nest libraries")); | |
1383 | if (this->in_group_) | |
1384 | gold_fatal(_("may not nest libraries in groups")); | |
1385 | Input_file_lib* lib = new Input_file_lib(options); | |
1386 | this->input_argument_list_.push_back(Input_argument(lib)); | |
1387 | this->in_lib_ = true; | |
1388 | } | |
1389 | ||
1390 | // End a lib. | |
1391 | ||
1392 | void | |
1393 | Input_arguments::end_lib() | |
1394 | { | |
1395 | if (!this->in_lib_) | |
1396 | gold_fatal(_("lib end without lib start")); | |
1397 | this->in_lib_ = false; | |
1398 | } | |
1399 | ||
ead1e424 | 1400 | // Command_line options. |
bae7f79e | 1401 | |
a5dc0706 | 1402 | Command_line::Command_line() |
bae7f79e ILT |
1403 | { |
1404 | } | |
1405 | ||
293c1386 CC |
1406 | // Pre_options is the hook that sets the ready_to_register flag. |
1407 | ||
1408 | Command_line::Pre_options::Pre_options() | |
1409 | { | |
1410 | gold::options::ready_to_register = true; | |
1411 | } | |
1412 | ||
ee1fe73e ILT |
1413 | // Process the command line options. For process_one_option, i is the |
1414 | // index of argv to process next, and must be an option (that is, | |
1415 | // start with a dash). The return value is the index of the next | |
1416 | // option to process (i+1 or i+2, or argc to indicate processing is | |
1417 | // done). no_more_options is set to true if (and when) "--" is seen | |
1418 | // as an option. | |
bae7f79e | 1419 | |
a0451b38 | 1420 | int |
ee1fe73e | 1421 | Command_line::process_one_option(int argc, const char** argv, int i, |
bbc5ae17 | 1422 | bool* no_more_options) |
bae7f79e | 1423 | { |
ee1fe73e | 1424 | gold_assert(argv[i][0] == '-' && !(*no_more_options)); |
a0451b38 | 1425 | |
ee1fe73e ILT |
1426 | // If we are reading "--", then just set no_more_options and return. |
1427 | if (argv[i][1] == '-' && argv[i][2] == '\0') | |
bae7f79e | 1428 | { |
ee1fe73e | 1429 | *no_more_options = true; |
a0451b38 ILT |
1430 | return i + 1; |
1431 | } | |
bae7f79e | 1432 | |
ee1fe73e ILT |
1433 | int new_i = i; |
1434 | options::One_option* option = NULL; | |
1435 | const char* arg = NULL; | |
bae7f79e | 1436 | |
ee1fe73e ILT |
1437 | // First, try to process argv as a long option. |
1438 | option = parse_long_option(argc, argv, false, &arg, &new_i); | |
1439 | if (option) | |
a0451b38 | 1440 | { |
ee1fe73e ILT |
1441 | option->reader->parse_to_value(argv[i], arg, this, &this->options_); |
1442 | return new_i; | |
a0451b38 | 1443 | } |
bae7f79e | 1444 | |
ee1fe73e ILT |
1445 | // Now, try to process argv as a short option. Since several short |
1446 | // options can be combined in one argv, we may have to parse a lot | |
1447 | // until we're done reading this argv. | |
1448 | int pos_in_argv_i = 1; | |
1449 | while (new_i == i) | |
a0451b38 | 1450 | { |
ee1fe73e ILT |
1451 | option = parse_short_option(argc, argv, pos_in_argv_i, &arg, &new_i); |
1452 | if (!option) | |
bbc5ae17 | 1453 | break; |
ee1fe73e ILT |
1454 | option->reader->parse_to_value(argv[i], arg, this, &this->options_); |
1455 | ++pos_in_argv_i; | |
a0451b38 | 1456 | } |
ee1fe73e ILT |
1457 | if (option) |
1458 | return new_i; | |
a0451b38 | 1459 | |
ee1fe73e ILT |
1460 | // I guess it's neither a long option nor a short option. |
1461 | usage(_("unknown option"), argv[i]); | |
1462 | return argc; | |
a0451b38 | 1463 | } |
bae7f79e | 1464 | |
bae7f79e | 1465 | |
a0451b38 | 1466 | void |
ee1fe73e | 1467 | Command_line::process(int argc, const char** argv) |
a0451b38 ILT |
1468 | { |
1469 | bool no_more_options = false; | |
1470 | int i = 0; | |
1471 | while (i < argc) | |
ead1e424 | 1472 | { |
ee1fe73e ILT |
1473 | this->position_options_.copy_from_options(this->options()); |
1474 | if (no_more_options || argv[i][0] != '-') | |
bbc5ae17 | 1475 | { |
ae3b5189 CD |
1476 | Input_file_argument file(argv[i], |
1477 | Input_file_argument::INPUT_FILE_TYPE_FILE, | |
1478 | "", false, this->position_options_); | |
bbc5ae17 RM |
1479 | this->inputs_.add_file(file); |
1480 | ++i; | |
1481 | } | |
bae7f79e | 1482 | else |
bbc5ae17 | 1483 | i = process_one_option(argc, argv, i, &no_more_options); |
bae7f79e | 1484 | } |
bae7f79e | 1485 | |
dbe717ef | 1486 | if (this->inputs_.in_group()) |
ee1fe73e ILT |
1487 | { |
1488 | fprintf(stderr, _("%s: missing group end\n"), program_name); | |
1489 | usage(); | |
1490 | } | |
bae7f79e | 1491 | |
ee1fe73e ILT |
1492 | // Normalize the options and ensure they don't contradict each other. |
1493 | this->options_.finalize(); | |
bae7f79e | 1494 | } |
61ba1cf9 | 1495 | |
6affe781 ILT |
1496 | // Finalize the version script options and return them. |
1497 | ||
1498 | const Version_script_info& | |
1499 | Command_line::version_script() | |
1500 | { | |
1501 | this->options_.finalize_dynamic_list(); | |
1502 | Version_script_info* vsi = this->script_options_.version_script_info(); | |
1503 | vsi->finalize(); | |
11e32464 | 1504 | return *vsi; |
6affe781 ILT |
1505 | } |
1506 | ||
61ba1cf9 | 1507 | } // End namespace gold. |