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bae7f79e ILT |
1 | // options.h -- handle command line options for gold -*- C++ -*- |
2 | ||
6cb15b7f ILT |
3 | // Copyright 2006, 2007 Free Software Foundation, Inc. |
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 | ||
bae7f79e ILT |
23 | // Command_line |
24 | // Holds everything we get from the command line. | |
25 | // General_options (from Command_line::options()) | |
26 | // Options which are not position dependent. | |
27 | // Input_argument (from Command_line::inputs()) | |
28 | // The list of input files, including -l options. | |
29 | // Position_dependent_options (from Input_argument::options()) | |
30 | // Position dependent options which apply to this argument. | |
31 | ||
32 | #ifndef GOLD_OPTIONS_H | |
33 | #define GOLD_OPTIONS_H | |
34 | ||
ca3a67a5 | 35 | #include <cstdlib> |
bae7f79e | 36 | #include <list> |
61ba1cf9 | 37 | #include <string> |
92e059d8 | 38 | #include <vector> |
bae7f79e | 39 | |
bae7f79e ILT |
40 | namespace gold |
41 | { | |
42 | ||
43 | class Command_line; | |
ead1e424 | 44 | class Input_file_group; |
bae7f79e ILT |
45 | |
46 | namespace options { | |
47 | ||
48 | class Command_line_options; | |
49 | struct One_option; | |
35cdfc9a | 50 | struct One_z_option; |
bae7f79e ILT |
51 | |
52 | } // End namespace gold::options. | |
53 | ||
ad2d6943 ILT |
54 | // A directory to search. For each directory we record whether it is |
55 | // in the sysroot. We need to know this so that, if a linker script | |
56 | // is found within the sysroot, we will apply the sysroot to any files | |
57 | // named by that script. | |
58 | ||
59 | class Search_directory | |
60 | { | |
61 | public: | |
62 | // We need a default constructor because we put this in a | |
63 | // std::vector. | |
64 | Search_directory() | |
65 | : name_(NULL), put_in_sysroot_(false), is_in_sysroot_(false) | |
66 | { } | |
67 | ||
68 | // This is the usual constructor. | |
69 | Search_directory(const char* name, bool put_in_sysroot) | |
70 | : name_(name), put_in_sysroot_(put_in_sysroot), is_in_sysroot_(false) | |
71 | { gold_assert(!this->name_.empty()); } | |
72 | ||
73 | // This is called if we have a sysroot. The sysroot is prefixed to | |
74 | // any entries for which put_in_sysroot_ is true. is_in_sysroot_ is | |
75 | // set to true for any enries which are in the sysroot (this will | |
76 | // naturally include any entries for which put_in_sysroot_ is true). | |
77 | // SYSROOT is the sysroot, CANONICAL_SYSROOT is the result of | |
78 | // passing SYSROOT to lrealpath. | |
79 | void | |
80 | add_sysroot(const char* sysroot, const char* canonical_sysroot); | |
81 | ||
82 | // Get the directory name. | |
83 | const std::string& | |
84 | name() const | |
85 | { return this->name_; } | |
86 | ||
87 | // Return whether this directory is in the sysroot. | |
88 | bool | |
89 | is_in_sysroot() const | |
90 | { return this->is_in_sysroot_; } | |
91 | ||
92 | private: | |
93 | std::string name_; | |
94 | bool put_in_sysroot_; | |
95 | bool is_in_sysroot_; | |
96 | }; | |
97 | ||
bae7f79e ILT |
98 | // The position independent options which apply to the whole link. |
99 | // There are a lot of them. | |
100 | ||
101 | class General_options | |
102 | { | |
103 | public: | |
104 | General_options(); | |
105 | ||
a6badf5a ILT |
106 | // -E: export dynamic symbols. |
107 | bool | |
108 | export_dynamic() const | |
109 | { return this->export_dynamic_; } | |
110 | ||
dbe717ef ILT |
111 | // -I: dynamic linker name. |
112 | const char* | |
113 | dynamic_linker() const | |
114 | { return this->dynamic_linker_; } | |
115 | ||
bae7f79e | 116 | // -L: Library search path. |
ad2d6943 | 117 | typedef std::vector<Search_directory> Dir_list; |
bae7f79e ILT |
118 | |
119 | const Dir_list& | |
120 | search_path() const | |
121 | { return this->search_path_; } | |
122 | ||
ca3a67a5 ILT |
123 | // -O: optimization level (0: don't try to optimize output size). |
124 | int | |
125 | optimization_level() const | |
126 | { return this->optimization_level_; } | |
127 | ||
61ba1cf9 ILT |
128 | // -o: Output file name. |
129 | const char* | |
130 | output_file_name() const | |
131 | { return this->output_file_name_; } | |
132 | ||
bae7f79e ILT |
133 | // -r: Whether we are doing a relocatable link. |
134 | bool | |
135 | is_relocatable() const | |
136 | { return this->is_relocatable_; } | |
137 | ||
9e2dcb77 ILT |
138 | // -s: Strip all symbols. |
139 | bool | |
140 | strip_all() const | |
141 | { return this->strip_ == STRIP_ALL; } | |
142 | ||
143 | // -S: Strip debugging information. | |
144 | bool | |
145 | strip_debug() const | |
146 | { return this->strip_ == STRIP_ALL || this->strip_ == STRIP_DEBUG; } | |
147 | ||
51b08ebe ILT |
148 | // -Bsymbolic: bind defined symbols locally. |
149 | bool | |
150 | symbolic() const | |
151 | { return this->symbolic_; } | |
152 | ||
7da52175 ILT |
153 | // --eh-frame-hdr: Whether to generate an exception frame header. |
154 | bool | |
155 | create_eh_frame_hdr() const | |
156 | { return this->create_eh_frame_hdr_; } | |
157 | ||
41f542e7 ILT |
158 | // --rpath: The runtime search path. |
159 | const Dir_list& | |
160 | rpath() const | |
161 | { return this->rpath_; } | |
162 | ||
15b3cfae ILT |
163 | // --rpath-link: The link time search patch for shared libraries. |
164 | const Dir_list& | |
165 | rpath_link() const | |
166 | { return this->rpath_link_; } | |
167 | ||
92e059d8 ILT |
168 | // --shared: Whether generating a shared object. |
169 | bool | |
170 | is_shared() const | |
171 | { return this->is_shared_; } | |
172 | ||
bae7f79e ILT |
173 | // --static: Whether doing a static link. |
174 | bool | |
175 | is_static() const | |
176 | { return this->is_static_; } | |
177 | ||
0c5e9c22 | 178 | // --stats: Print resource usage statistics. |
e44fcf3b ILT |
179 | bool |
180 | print_stats() const | |
181 | { return this->print_stats_; } | |
182 | ||
ad2d6943 ILT |
183 | // --sysroot: The system root of a cross-linker. |
184 | const std::string& | |
185 | sysroot() const | |
186 | { return this->sysroot_; } | |
187 | ||
0c5e9c22 ILT |
188 | // -Ttext: The address of the .text section |
189 | uint64_t | |
190 | text_segment_address() const | |
191 | { return this->text_segment_address_; } | |
192 | ||
193 | // Whether -Ttext was used. | |
194 | bool | |
195 | user_set_text_segment_address() const | |
196 | { return this->text_segment_address_ != -1U; } | |
197 | ||
fe9a4c12 ILT |
198 | // --threads: Whether to use threads. |
199 | bool | |
200 | threads() const | |
201 | { return this->threads_; } | |
202 | ||
203 | // --thread-count-initial: Threads to use in initial pass. | |
204 | int | |
205 | thread_count_initial() const | |
206 | { return this->thread_count_initial_; } | |
207 | ||
208 | // --thread-count-middle: Threads to use in middle pass. | |
209 | int | |
210 | thread_count_middle() const | |
211 | { return this->thread_count_middle_; } | |
212 | ||
213 | // --thread-count-final: Threads to use in final pass. | |
214 | int | |
215 | thread_count_final() const | |
216 | { return this->thread_count_final_; } | |
217 | ||
35cdfc9a ILT |
218 | // -z execstack, -z noexecstack |
219 | bool | |
220 | is_execstack_set() const | |
221 | { return this->execstack_ != EXECSTACK_FROM_INPUT; } | |
222 | ||
223 | bool | |
224 | is_stack_executable() const | |
225 | { return this->execstack_ == EXECSTACK_YES; } | |
226 | ||
bae7f79e | 227 | private: |
dbe717ef ILT |
228 | // Don't copy this structure. |
229 | General_options(const General_options&); | |
230 | General_options& operator=(const General_options&); | |
231 | ||
bae7f79e ILT |
232 | friend class Command_line; |
233 | friend class options::Command_line_options; | |
234 | ||
9e2dcb77 ILT |
235 | // Which symbols to strip. |
236 | enum Strip | |
237 | { | |
238 | // Don't strip any symbols. | |
239 | STRIP_NONE, | |
240 | // Strip all symbols. | |
241 | STRIP_ALL, | |
242 | // Strip debugging information. | |
243 | STRIP_DEBUG | |
244 | }; | |
245 | ||
35cdfc9a ILT |
246 | // Whether to mark the stack as executable. |
247 | enum Execstack | |
248 | { | |
249 | // Not set on command line. | |
250 | EXECSTACK_FROM_INPUT, | |
251 | // Mark the stack as executable. | |
252 | EXECSTACK_YES, | |
253 | // Mark the stack as not executable. | |
254 | EXECSTACK_NO | |
255 | }; | |
256 | ||
a6badf5a ILT |
257 | void |
258 | set_export_dynamic() | |
259 | { this->export_dynamic_ = true; } | |
260 | ||
dbe717ef ILT |
261 | void |
262 | set_dynamic_linker(const char* arg) | |
263 | { this->dynamic_linker_ = arg; } | |
264 | ||
bae7f79e ILT |
265 | void |
266 | add_to_search_path(const char* arg) | |
ad2d6943 ILT |
267 | { this->search_path_.push_back(Search_directory(arg, false)); } |
268 | ||
269 | void | |
270 | add_to_search_path_with_sysroot(const char* arg) | |
271 | { this->search_path_.push_back(Search_directory(arg, true)); } | |
bae7f79e | 272 | |
ca3a67a5 ILT |
273 | void |
274 | set_optimization_level(const char* arg) | |
275 | { this->optimization_level_ = atoi(arg); } | |
276 | ||
61ba1cf9 ILT |
277 | void |
278 | set_output_file_name(const char* arg) | |
279 | { this->output_file_name_ = arg; } | |
280 | ||
bae7f79e ILT |
281 | void |
282 | set_relocatable() | |
283 | { this->is_relocatable_ = true; } | |
284 | ||
9e2dcb77 ILT |
285 | void |
286 | set_strip_all() | |
287 | { this->strip_ = STRIP_ALL; } | |
288 | ||
46738c9a ILT |
289 | // Note: normalize_options() depends on the fact that this turns off |
290 | // STRIP_ALL if it were already set. | |
9e2dcb77 ILT |
291 | void |
292 | set_strip_debug() | |
293 | { this->strip_ = STRIP_DEBUG; } | |
294 | ||
51b08ebe ILT |
295 | void |
296 | set_symbolic() | |
297 | { this->symbolic_ = true; } | |
298 | ||
7da52175 | 299 | void |
192f9b85 | 300 | set_create_eh_frame_hdr() |
7da52175 ILT |
301 | { this->create_eh_frame_hdr_ = true; } |
302 | ||
41f542e7 ILT |
303 | void |
304 | add_to_rpath(const char* arg) | |
ad2d6943 | 305 | { this->rpath_.push_back(Search_directory(arg, false)); } |
41f542e7 | 306 | |
15b3cfae ILT |
307 | void |
308 | add_to_rpath_link(const char* arg) | |
ad2d6943 | 309 | { this->rpath_link_.push_back(Search_directory(arg, false)); } |
15b3cfae | 310 | |
92e059d8 ILT |
311 | void |
312 | set_shared() | |
313 | { this->is_shared_ = true; } | |
314 | ||
bae7f79e ILT |
315 | void |
316 | set_static() | |
317 | { this->is_static_ = true; } | |
318 | ||
e44fcf3b ILT |
319 | void |
320 | set_stats() | |
321 | { this->print_stats_ = true; } | |
322 | ||
ad2d6943 ILT |
323 | void |
324 | set_sysroot(const char* arg) | |
325 | { this->sysroot_ = arg; } | |
326 | ||
0c5e9c22 ILT |
327 | void |
328 | set_text_segment_address(const char* arg) | |
329 | { | |
330 | char* endptr; | |
331 | this->text_segment_address_ = strtoull(arg, &endptr, 0); | |
332 | if (*endptr != '\0' | |
333 | || this->text_segment_address_ == -1U) | |
334 | { | |
335 | fprintf(stderr, _("%s: invalid argument to -Ttext: %s\n"), | |
336 | program_name, arg); | |
337 | ::exit(1); | |
338 | } | |
339 | } | |
340 | ||
fe9a4c12 ILT |
341 | int |
342 | parse_thread_count(const char* arg) | |
343 | { | |
344 | char* endptr; | |
345 | int count = strtol(arg, &endptr, 0); | |
346 | if (*endptr != '\0' || count < 0) | |
347 | { | |
348 | fprintf(stderr, _("%s: invalid thread count: %s\n"), | |
349 | program_name, arg); | |
350 | ::exit(1); | |
351 | } | |
352 | return count; | |
353 | } | |
354 | ||
355 | void | |
356 | set_threads() | |
357 | { this->threads_ = true; } | |
358 | ||
359 | void | |
360 | clear_threads() | |
361 | { this->threads_ = false; } | |
362 | ||
363 | void | |
364 | set_thread_count(const char* arg) | |
365 | { | |
366 | int count = this->parse_thread_count(arg); | |
367 | this->thread_count_initial_ = count; | |
368 | this->thread_count_middle_ = count; | |
369 | this->thread_count_final_ = count; | |
370 | } | |
371 | ||
372 | void | |
373 | set_thread_count_initial(const char* arg) | |
374 | { this->thread_count_initial_ = this->parse_thread_count(arg); } | |
375 | ||
376 | void | |
377 | set_thread_count_middle(const char* arg) | |
378 | { this->thread_count_initial_ = this->parse_thread_count(arg); } | |
379 | ||
380 | void | |
381 | set_thread_count_final(const char* arg) | |
382 | { this->thread_count_initial_ = this->parse_thread_count(arg); } | |
383 | ||
652ec9bd ILT |
384 | void |
385 | ignore(const char*) | |
386 | { } | |
387 | ||
35cdfc9a ILT |
388 | void |
389 | set_execstack() | |
390 | { this->execstack_ = EXECSTACK_YES; } | |
391 | ||
392 | void | |
393 | set_noexecstack() | |
394 | { this->execstack_ = EXECSTACK_NO; } | |
395 | ||
396 | // Handle the -z option. | |
397 | void | |
398 | handle_z_option(const char*); | |
399 | ||
ad2d6943 ILT |
400 | // Apply any sysroot to the directory lists. |
401 | void | |
402 | add_sysroot(); | |
403 | ||
a6badf5a | 404 | bool export_dynamic_; |
dbe717ef | 405 | const char* dynamic_linker_; |
bae7f79e | 406 | Dir_list search_path_; |
ca3a67a5 | 407 | int optimization_level_; |
61ba1cf9 | 408 | const char* output_file_name_; |
bae7f79e | 409 | bool is_relocatable_; |
9e2dcb77 | 410 | Strip strip_; |
51b08ebe | 411 | bool symbolic_; |
7da52175 | 412 | bool create_eh_frame_hdr_; |
41f542e7 | 413 | Dir_list rpath_; |
15b3cfae | 414 | Dir_list rpath_link_; |
92e059d8 | 415 | bool is_shared_; |
bae7f79e | 416 | bool is_static_; |
e44fcf3b | 417 | bool print_stats_; |
ad2d6943 | 418 | std::string sysroot_; |
0c5e9c22 | 419 | uint64_t text_segment_address_; |
fe9a4c12 ILT |
420 | bool threads_; |
421 | int thread_count_initial_; | |
422 | int thread_count_middle_; | |
423 | int thread_count_final_; | |
35cdfc9a | 424 | Execstack execstack_; |
bae7f79e ILT |
425 | }; |
426 | ||
427 | // The current state of the position dependent options. | |
428 | ||
429 | class Position_dependent_options | |
430 | { | |
431 | public: | |
432 | Position_dependent_options(); | |
433 | ||
61611222 ILT |
434 | // -Bdynamic/-Bstatic: Whether we are searching for a static archive |
435 | // -rather than a shared object. | |
bae7f79e | 436 | bool |
dbe717ef | 437 | do_static_search() const |
bae7f79e ILT |
438 | { return this->do_static_search_; } |
439 | ||
dbe717ef ILT |
440 | // --as-needed: Whether to add a DT_NEEDED argument only if the |
441 | // dynamic object is used. | |
442 | bool | |
443 | as_needed() const | |
444 | { return this->as_needed_; } | |
bae7f79e | 445 | |
4973341a ILT |
446 | // --whole-archive: Whether to include the entire contents of an |
447 | // --archive. | |
448 | bool | |
449 | include_whole_archive() const | |
450 | { return this->include_whole_archive_; } | |
451 | ||
bae7f79e ILT |
452 | void |
453 | set_static_search() | |
454 | { this->do_static_search_ = true; } | |
455 | ||
456 | void | |
457 | set_dynamic_search() | |
458 | { this->do_static_search_ = false; } | |
459 | ||
dbe717ef ILT |
460 | void |
461 | set_as_needed() | |
462 | { this->as_needed_ = true; } | |
463 | ||
464 | void | |
465 | clear_as_needed() | |
466 | { this->as_needed_ = false; } | |
467 | ||
4973341a ILT |
468 | void |
469 | set_whole_archive() | |
470 | { this->include_whole_archive_ = true; } | |
471 | ||
472 | void | |
473 | clear_whole_archive() | |
474 | { this->include_whole_archive_ = false; } | |
475 | ||
dbe717ef | 476 | private: |
bae7f79e | 477 | bool do_static_search_; |
dbe717ef | 478 | bool as_needed_; |
4973341a | 479 | bool include_whole_archive_; |
bae7f79e ILT |
480 | }; |
481 | ||
482 | // A single file or library argument from the command line. | |
483 | ||
ead1e424 | 484 | class Input_file_argument |
bae7f79e ILT |
485 | { |
486 | public: | |
51dee2fe ILT |
487 | // name: file name or library name |
488 | // is_lib: true if name is a library name: that is, emits the leading | |
489 | // "lib" and trailing ".so"/".a" from the name | |
490 | // extra_search_path: an extra directory to look for the file, prior | |
491 | // to checking the normal library search path. If this is "", | |
492 | // then no extra directory is added. | |
493 | // options: The position dependent options at this point in the | |
ad2d6943 | 494 | // command line, such as --whole-archive. |
ead1e424 | 495 | Input_file_argument() |
51dee2fe | 496 | : name_(), is_lib_(false), extra_search_path_(""), options_() |
ead1e424 ILT |
497 | { } |
498 | ||
499 | Input_file_argument(const char* name, bool is_lib, | |
51dee2fe | 500 | const char* extra_search_path, |
ead1e424 | 501 | const Position_dependent_options& options) |
51dee2fe ILT |
502 | : name_(name), is_lib_(is_lib), extra_search_path_(extra_search_path), |
503 | options_(options) | |
bae7f79e ILT |
504 | { } |
505 | ||
506 | const char* | |
507 | name() const | |
dbe717ef | 508 | { return this->name_.c_str(); } |
bae7f79e ILT |
509 | |
510 | const Position_dependent_options& | |
511 | options() const | |
512 | { return this->options_; } | |
513 | ||
514 | bool | |
515 | is_lib() const | |
61ba1cf9 | 516 | { return this->is_lib_; } |
bae7f79e | 517 | |
51dee2fe ILT |
518 | const char* |
519 | extra_search_path() const | |
520 | { | |
521 | return (this->extra_search_path_.empty() | |
522 | ? NULL | |
523 | : this->extra_search_path_.c_str()); | |
524 | } | |
525 | ||
526 | // Return whether this file may require a search using the -L | |
527 | // options. | |
528 | bool | |
529 | may_need_search() const | |
530 | { return this->is_lib_ || !this->extra_search_path_.empty(); } | |
531 | ||
bae7f79e | 532 | private: |
dbe717ef ILT |
533 | // We use std::string, not const char*, here for convenience when |
534 | // using script files, so that we do not have to preserve the string | |
535 | // in that case. | |
536 | std::string name_; | |
61ba1cf9 | 537 | bool is_lib_; |
51dee2fe | 538 | std::string extra_search_path_; |
bae7f79e ILT |
539 | Position_dependent_options options_; |
540 | }; | |
541 | ||
ead1e424 ILT |
542 | // A file or library, or a group, from the command line. |
543 | ||
544 | class Input_argument | |
545 | { | |
546 | public: | |
547 | // Create a file or library argument. | |
548 | explicit Input_argument(Input_file_argument file) | |
549 | : is_file_(true), file_(file), group_(NULL) | |
550 | { } | |
551 | ||
552 | // Create a group argument. | |
553 | explicit Input_argument(Input_file_group* group) | |
554 | : is_file_(false), group_(group) | |
555 | { } | |
556 | ||
557 | // Return whether this is a file. | |
558 | bool | |
559 | is_file() const | |
560 | { return this->is_file_; } | |
561 | ||
562 | // Return whether this is a group. | |
563 | bool | |
564 | is_group() const | |
565 | { return !this->is_file_; } | |
566 | ||
567 | // Return the information about the file. | |
568 | const Input_file_argument& | |
569 | file() const | |
570 | { | |
a3ad94ed | 571 | gold_assert(this->is_file_); |
ead1e424 ILT |
572 | return this->file_; |
573 | } | |
574 | ||
575 | // Return the information about the group. | |
576 | const Input_file_group* | |
577 | group() const | |
578 | { | |
a3ad94ed | 579 | gold_assert(!this->is_file_); |
ead1e424 ILT |
580 | return this->group_; |
581 | } | |
582 | ||
583 | Input_file_group* | |
584 | group() | |
585 | { | |
a3ad94ed | 586 | gold_assert(!this->is_file_); |
ead1e424 ILT |
587 | return this->group_; |
588 | } | |
589 | ||
590 | private: | |
591 | bool is_file_; | |
592 | Input_file_argument file_; | |
593 | Input_file_group* group_; | |
594 | }; | |
595 | ||
596 | // A group from the command line. This is a set of arguments within | |
597 | // --start-group ... --end-group. | |
598 | ||
599 | class Input_file_group | |
92e059d8 | 600 | { |
ead1e424 ILT |
601 | public: |
602 | typedef std::vector<Input_argument> Files; | |
603 | typedef Files::const_iterator const_iterator; | |
604 | ||
605 | Input_file_group() | |
606 | : files_() | |
607 | { } | |
608 | ||
609 | // Add a file to the end of the group. | |
610 | void | |
611 | add_file(const Input_file_argument& arg) | |
612 | { this->files_.push_back(Input_argument(arg)); } | |
613 | ||
614 | // Iterators to iterate over the group contents. | |
615 | ||
616 | const_iterator | |
617 | begin() const | |
618 | { return this->files_.begin(); } | |
619 | ||
620 | const_iterator | |
621 | end() const | |
622 | { return this->files_.end(); } | |
623 | ||
624 | private: | |
625 | Files files_; | |
92e059d8 ILT |
626 | }; |
627 | ||
dbe717ef ILT |
628 | // A list of files from the command line or a script. |
629 | ||
630 | class Input_arguments | |
631 | { | |
632 | public: | |
633 | typedef std::vector<Input_argument> Input_argument_list; | |
634 | typedef Input_argument_list::const_iterator const_iterator; | |
635 | ||
636 | Input_arguments() | |
637 | : input_argument_list_(), in_group_(false) | |
638 | { } | |
639 | ||
640 | // Add a file. | |
641 | void | |
642 | add_file(const Input_file_argument& arg); | |
643 | ||
644 | // Start a group (the --start-group option). | |
645 | void | |
646 | start_group(); | |
647 | ||
648 | // End a group (the --end-group option). | |
649 | void | |
650 | end_group(); | |
651 | ||
652 | // Return whether we are currently in a group. | |
653 | bool | |
654 | in_group() const | |
655 | { return this->in_group_; } | |
656 | ||
fe9a4c12 ILT |
657 | // The number of entries in the list. |
658 | int | |
659 | size() const | |
660 | { return this->input_argument_list_.size(); } | |
661 | ||
dbe717ef ILT |
662 | // Iterators to iterate over the list of input files. |
663 | ||
664 | const_iterator | |
665 | begin() const | |
666 | { return this->input_argument_list_.begin(); } | |
667 | ||
668 | const_iterator | |
669 | end() const | |
670 | { return this->input_argument_list_.end(); } | |
671 | ||
672 | // Return whether the list is empty. | |
673 | bool | |
674 | empty() const | |
675 | { return this->input_argument_list_.empty(); } | |
676 | ||
677 | private: | |
678 | Input_argument_list input_argument_list_; | |
679 | bool in_group_; | |
680 | }; | |
681 | ||
bae7f79e ILT |
682 | // All the information read from the command line. |
683 | ||
684 | class Command_line | |
685 | { | |
686 | public: | |
ead1e424 ILT |
687 | typedef Input_arguments::const_iterator const_iterator; |
688 | ||
bae7f79e ILT |
689 | Command_line(); |
690 | ||
691 | // Process the command line options. This will exit with an | |
692 | // appropriate error message if an unrecognized option is seen. | |
693 | void | |
694 | process(int argc, char** argv); | |
695 | ||
61ba1cf9 ILT |
696 | // Handle a -l option. |
697 | int | |
698 | process_l_option(int, char**, char*); | |
699 | ||
ead1e424 ILT |
700 | // Handle a --start-group option. |
701 | void | |
702 | start_group(const char* arg); | |
703 | ||
704 | // Handle a --end-group option. | |
705 | void | |
706 | end_group(const char* arg); | |
707 | ||
61ba1cf9 | 708 | // Get the general options. |
bae7f79e ILT |
709 | const General_options& |
710 | options() const | |
711 | { return this->options_; } | |
712 | ||
fe9a4c12 ILT |
713 | // The number of input files. |
714 | int | |
715 | number_of_input_files() const | |
716 | { return this->inputs_.size(); } | |
717 | ||
ead1e424 ILT |
718 | // Iterators to iterate over the list of input files. |
719 | ||
720 | const_iterator | |
721 | begin() const | |
722 | { return this->inputs_.begin(); } | |
723 | ||
724 | const_iterator | |
725 | end() const | |
726 | { return this->inputs_.end(); } | |
bae7f79e ILT |
727 | |
728 | private: | |
ead1e424 ILT |
729 | Command_line(const Command_line&); |
730 | Command_line& operator=(const Command_line&); | |
731 | ||
732 | // Report usage error. | |
733 | void | |
734 | usage() ATTRIBUTE_NORETURN; | |
735 | void | |
736 | usage(const char* msg, const char* opt) ATTRIBUTE_NORETURN; | |
737 | void | |
738 | usage(const char* msg, char opt) ATTRIBUTE_NORETURN; | |
739 | ||
740 | // Apply a command line option. | |
741 | void | |
742 | apply_option(const gold::options::One_option&, const char*); | |
743 | ||
744 | // Add a file. | |
745 | void | |
746 | add_file(const char* name, bool is_lib); | |
bae7f79e | 747 | |
46738c9a ILT |
748 | // Examine the result of processing the command-line, and verify |
749 | // the flags do not contradict each other or are otherwise illegal. | |
750 | void | |
751 | normalize_options(); | |
752 | ||
bae7f79e ILT |
753 | General_options options_; |
754 | Position_dependent_options position_options_; | |
ead1e424 | 755 | Input_arguments inputs_; |
bae7f79e ILT |
756 | }; |
757 | ||
758 | } // End namespace gold. | |
759 | ||
760 | #endif // !defined(GOLD_OPTIONS_H) |