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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 | |
3c2fafa5 ILT |
40 | #include "script.h" |
41 | ||
bae7f79e ILT |
42 | namespace gold |
43 | { | |
44 | ||
45 | class Command_line; | |
ead1e424 | 46 | class Input_file_group; |
3c2fafa5 | 47 | class Position_dependent_options; |
bae7f79e | 48 | |
c7912668 ILT |
49 | namespace options |
50 | { | |
bae7f79e ILT |
51 | |
52 | class Command_line_options; | |
53 | struct One_option; | |
35cdfc9a | 54 | struct One_z_option; |
c7912668 | 55 | struct One_debug_option; |
bae7f79e ILT |
56 | |
57 | } // End namespace gold::options. | |
58 | ||
ad2d6943 ILT |
59 | // A directory to search. For each directory we record whether it is |
60 | // in the sysroot. We need to know this so that, if a linker script | |
61 | // is found within the sysroot, we will apply the sysroot to any files | |
62 | // named by that script. | |
63 | ||
64 | class Search_directory | |
65 | { | |
66 | public: | |
67 | // We need a default constructor because we put this in a | |
68 | // std::vector. | |
69 | Search_directory() | |
70 | : name_(NULL), put_in_sysroot_(false), is_in_sysroot_(false) | |
71 | { } | |
72 | ||
73 | // This is the usual constructor. | |
74 | Search_directory(const char* name, bool put_in_sysroot) | |
75 | : name_(name), put_in_sysroot_(put_in_sysroot), is_in_sysroot_(false) | |
76 | { gold_assert(!this->name_.empty()); } | |
77 | ||
78 | // This is called if we have a sysroot. The sysroot is prefixed to | |
79 | // any entries for which put_in_sysroot_ is true. is_in_sysroot_ is | |
80 | // set to true for any enries which are in the sysroot (this will | |
81 | // naturally include any entries for which put_in_sysroot_ is true). | |
82 | // SYSROOT is the sysroot, CANONICAL_SYSROOT is the result of | |
83 | // passing SYSROOT to lrealpath. | |
84 | void | |
85 | add_sysroot(const char* sysroot, const char* canonical_sysroot); | |
86 | ||
87 | // Get the directory name. | |
88 | const std::string& | |
89 | name() const | |
90 | { return this->name_; } | |
91 | ||
92 | // Return whether this directory is in the sysroot. | |
93 | bool | |
94 | is_in_sysroot() const | |
95 | { return this->is_in_sysroot_; } | |
96 | ||
97 | private: | |
98 | std::string name_; | |
99 | bool put_in_sysroot_; | |
100 | bool is_in_sysroot_; | |
101 | }; | |
102 | ||
bae7f79e ILT |
103 | // The position independent options which apply to the whole link. |
104 | // There are a lot of them. | |
105 | ||
106 | class General_options | |
107 | { | |
108 | public: | |
109 | General_options(); | |
110 | ||
d391083d ILT |
111 | // -e: set entry address. |
112 | const char* | |
113 | entry() const | |
114 | { return this->entry_; } | |
115 | ||
a6badf5a ILT |
116 | // -E: export dynamic symbols. |
117 | bool | |
118 | export_dynamic() const | |
119 | { return this->export_dynamic_; } | |
120 | ||
fced7afd ILT |
121 | // -h: shared library name. |
122 | const char* | |
123 | soname() const | |
124 | { return this->soname_; } | |
125 | ||
dbe717ef ILT |
126 | // -I: dynamic linker name. |
127 | const char* | |
128 | dynamic_linker() const | |
129 | { return this->dynamic_linker_; } | |
130 | ||
bae7f79e | 131 | // -L: Library search path. |
ad2d6943 | 132 | typedef std::vector<Search_directory> Dir_list; |
bae7f79e ILT |
133 | |
134 | const Dir_list& | |
135 | search_path() const | |
136 | { return this->search_path_; } | |
137 | ||
ca3a67a5 ILT |
138 | // -O: optimization level (0: don't try to optimize output size). |
139 | int | |
140 | optimization_level() const | |
141 | { return this->optimization_level_; } | |
142 | ||
61ba1cf9 ILT |
143 | // -o: Output file name. |
144 | const char* | |
145 | output_file_name() const | |
146 | { return this->output_file_name_; } | |
147 | ||
bae7f79e ILT |
148 | // -r: Whether we are doing a relocatable link. |
149 | bool | |
150 | is_relocatable() const | |
151 | { return this->is_relocatable_; } | |
152 | ||
9e2dcb77 ILT |
153 | // -s: Strip all symbols. |
154 | bool | |
155 | strip_all() const | |
156 | { return this->strip_ == STRIP_ALL; } | |
157 | ||
158 | // -S: Strip debugging information. | |
159 | bool | |
160 | strip_debug() const | |
161 | { return this->strip_ == STRIP_ALL || this->strip_ == STRIP_DEBUG; } | |
162 | ||
9a0910c3 ILT |
163 | // --strip-debug-gdb: strip only debugging information that's not |
164 | // used by gdb (at least, for gdb versions <= 6.7). | |
02d2ba74 ILT |
165 | bool |
166 | strip_debug_gdb() const | |
167 | { return this->strip_debug() || this->strip_ == STRIP_DEBUG_UNUSED_BY_GDB; } | |
168 | ||
e2827e5f ILT |
169 | // --allow-shlib-undefined: do not warn about unresolved symbols in |
170 | // --shared libraries. | |
171 | bool | |
172 | allow_shlib_undefined() const | |
173 | { return this->allow_shlib_undefined_; } | |
174 | ||
51b08ebe ILT |
175 | // -Bsymbolic: bind defined symbols locally. |
176 | bool | |
177 | symbolic() const | |
178 | { return this->symbolic_; } | |
179 | ||
9a0910c3 ILT |
180 | // --compress-debug-sections: compress .debug_* sections in the |
181 | // output file using the given compression method. This is useful | |
182 | // when the tools (such as gdb) support compressed sections. | |
183 | bool | |
184 | compress_debug_sections() const | |
185 | { return this->compress_debug_sections_ != NO_COMPRESSION; } | |
186 | ||
187 | bool | |
188 | zlib_compress_debug_sections() const | |
189 | { return this->compress_debug_sections_ == ZLIB_COMPRESSION; } | |
190 | ||
a2b1aa12 ILT |
191 | // --demangle: demangle C++ symbols in our log messages. |
192 | bool | |
193 | demangle() const | |
194 | { return this->demangle_; } | |
195 | ||
a55ce7fe ILT |
196 | // --detect-odr-violations: Whether to search for One Defn Rule violations. |
197 | bool | |
198 | detect_odr_violations() const | |
199 | { return this->detect_odr_violations_; } | |
200 | ||
7da52175 ILT |
201 | // --eh-frame-hdr: Whether to generate an exception frame header. |
202 | bool | |
203 | create_eh_frame_hdr() const | |
204 | { return this->create_eh_frame_hdr_; } | |
205 | ||
41f542e7 ILT |
206 | // --rpath: The runtime search path. |
207 | const Dir_list& | |
208 | rpath() const | |
209 | { return this->rpath_; } | |
210 | ||
15b3cfae ILT |
211 | // --rpath-link: The link time search patch for shared libraries. |
212 | const Dir_list& | |
213 | rpath_link() const | |
214 | { return this->rpath_link_; } | |
215 | ||
92e059d8 ILT |
216 | // --shared: Whether generating a shared object. |
217 | bool | |
218 | is_shared() const | |
219 | { return this->is_shared_; } | |
220 | ||
bae7f79e ILT |
221 | // --static: Whether doing a static link. |
222 | bool | |
223 | is_static() const | |
224 | { return this->is_static_; } | |
225 | ||
0c5e9c22 | 226 | // --stats: Print resource usage statistics. |
e44fcf3b ILT |
227 | bool |
228 | print_stats() const | |
229 | { return this->print_stats_; } | |
230 | ||
ad2d6943 ILT |
231 | // --sysroot: The system root of a cross-linker. |
232 | const std::string& | |
233 | sysroot() const | |
234 | { return this->sysroot_; } | |
235 | ||
0c5e9c22 ILT |
236 | // -Ttext: The address of the .text section |
237 | uint64_t | |
238 | text_segment_address() const | |
239 | { return this->text_segment_address_; } | |
240 | ||
241 | // Whether -Ttext was used. | |
242 | bool | |
243 | user_set_text_segment_address() const | |
244 | { return this->text_segment_address_ != -1U; } | |
245 | ||
fe9a4c12 ILT |
246 | // --threads: Whether to use threads. |
247 | bool | |
248 | threads() const | |
249 | { return this->threads_; } | |
250 | ||
251 | // --thread-count-initial: Threads to use in initial pass. | |
252 | int | |
253 | thread_count_initial() const | |
254 | { return this->thread_count_initial_; } | |
255 | ||
256 | // --thread-count-middle: Threads to use in middle pass. | |
257 | int | |
258 | thread_count_middle() const | |
259 | { return this->thread_count_middle_; } | |
260 | ||
261 | // --thread-count-final: Threads to use in final pass. | |
262 | int | |
263 | thread_count_final() const | |
264 | { return this->thread_count_final_; } | |
265 | ||
35cdfc9a ILT |
266 | // -z execstack, -z noexecstack |
267 | bool | |
268 | is_execstack_set() const | |
269 | { return this->execstack_ != EXECSTACK_FROM_INPUT; } | |
270 | ||
271 | bool | |
272 | is_stack_executable() const | |
273 | { return this->execstack_ == EXECSTACK_YES; } | |
274 | ||
c7912668 ILT |
275 | // --debug |
276 | unsigned int | |
277 | debug() const | |
278 | { return this->debug_; } | |
279 | ||
bae7f79e | 280 | private: |
dbe717ef ILT |
281 | // Don't copy this structure. |
282 | General_options(const General_options&); | |
283 | General_options& operator=(const General_options&); | |
284 | ||
bae7f79e ILT |
285 | friend class Command_line; |
286 | friend class options::Command_line_options; | |
287 | ||
9e2dcb77 ILT |
288 | // Which symbols to strip. |
289 | enum Strip | |
290 | { | |
291 | // Don't strip any symbols. | |
292 | STRIP_NONE, | |
293 | // Strip all symbols. | |
294 | STRIP_ALL, | |
295 | // Strip debugging information. | |
02d2ba74 ILT |
296 | STRIP_DEBUG, |
297 | // Strip debugging information that's not used by gdb (at least <= 6.7) | |
298 | STRIP_DEBUG_UNUSED_BY_GDB | |
9e2dcb77 ILT |
299 | }; |
300 | ||
35cdfc9a ILT |
301 | // Whether to mark the stack as executable. |
302 | enum Execstack | |
303 | { | |
304 | // Not set on command line. | |
305 | EXECSTACK_FROM_INPUT, | |
306 | // Mark the stack as executable. | |
307 | EXECSTACK_YES, | |
308 | // Mark the stack as not executable. | |
309 | EXECSTACK_NO | |
310 | }; | |
311 | ||
9a0910c3 ILT |
312 | // What compression method to use |
313 | enum CompressionMethod | |
314 | { | |
315 | NO_COMPRESSION, | |
316 | ZLIB_COMPRESSION, | |
317 | }; | |
318 | ||
d391083d ILT |
319 | void |
320 | set_entry(const char* arg) | |
321 | { this->entry_ = arg; } | |
322 | ||
a6badf5a ILT |
323 | void |
324 | set_export_dynamic() | |
325 | { this->export_dynamic_ = true; } | |
326 | ||
fced7afd ILT |
327 | void |
328 | set_soname(const char* arg) | |
329 | { this->soname_ = arg; } | |
330 | ||
dbe717ef ILT |
331 | void |
332 | set_dynamic_linker(const char* arg) | |
333 | { this->dynamic_linker_ = arg; } | |
334 | ||
bae7f79e ILT |
335 | void |
336 | add_to_search_path(const char* arg) | |
ad2d6943 ILT |
337 | { this->search_path_.push_back(Search_directory(arg, false)); } |
338 | ||
339 | void | |
340 | add_to_search_path_with_sysroot(const char* arg) | |
341 | { this->search_path_.push_back(Search_directory(arg, true)); } | |
bae7f79e | 342 | |
ca3a67a5 ILT |
343 | void |
344 | set_optimization_level(const char* arg) | |
3ae7da37 ILT |
345 | { |
346 | char* endptr; | |
347 | this->optimization_level_ = strtol(arg, &endptr, 0); | |
348 | if (*endptr != '\0' || this->optimization_level_ < 0) | |
349 | gold_fatal(_("invalid optimization level: %s"), arg); | |
350 | } | |
ca3a67a5 | 351 | |
61ba1cf9 ILT |
352 | void |
353 | set_output_file_name(const char* arg) | |
354 | { this->output_file_name_ = arg; } | |
355 | ||
bae7f79e ILT |
356 | void |
357 | set_relocatable() | |
358 | { this->is_relocatable_ = true; } | |
359 | ||
9e2dcb77 ILT |
360 | void |
361 | set_strip_all() | |
362 | { this->strip_ = STRIP_ALL; } | |
363 | ||
46738c9a ILT |
364 | // Note: normalize_options() depends on the fact that this turns off |
365 | // STRIP_ALL if it were already set. | |
9e2dcb77 ILT |
366 | void |
367 | set_strip_debug() | |
368 | { this->strip_ = STRIP_DEBUG; } | |
369 | ||
02d2ba74 ILT |
370 | void |
371 | set_strip_debug_gdb() | |
372 | { this->strip_ = STRIP_DEBUG_UNUSED_BY_GDB; } | |
373 | ||
e2827e5f ILT |
374 | void |
375 | set_allow_shlib_undefined() | |
376 | { this->allow_shlib_undefined_ = true; } | |
377 | ||
378 | void | |
379 | set_no_allow_shlib_undefined() | |
380 | { this->allow_shlib_undefined_ = false; } | |
381 | ||
51b08ebe ILT |
382 | void |
383 | set_symbolic() | |
384 | { this->symbolic_ = true; } | |
385 | ||
bc2c67ff | 386 | void set_compress_debug_sections(const char* arg) |
9a0910c3 ILT |
387 | { |
388 | if (strcmp(arg, "none") == 0) | |
389 | this->compress_debug_sections_ = NO_COMPRESSION; | |
390 | #ifdef HAVE_ZLIB_H | |
391 | else if (strcmp(arg, "zlib") == 0) | |
392 | this->compress_debug_sections_ = ZLIB_COMPRESSION; | |
393 | #endif | |
394 | else | |
bc2c67ff | 395 | gold_fatal(_("unsupported argument to --compress-debug-sections: %s"), |
9a0910c3 ILT |
396 | arg); |
397 | } | |
398 | ||
a2b1aa12 ILT |
399 | void |
400 | set_demangle() | |
401 | { this->demangle_ = true; } | |
402 | ||
403 | void | |
404 | clear_demangle() | |
405 | { this->demangle_ = false; } | |
406 | ||
a55ce7fe ILT |
407 | void |
408 | set_detect_odr_violations() | |
409 | { this->detect_odr_violations_ = true; } | |
410 | ||
7da52175 | 411 | void |
192f9b85 | 412 | set_create_eh_frame_hdr() |
7da52175 ILT |
413 | { this->create_eh_frame_hdr_ = true; } |
414 | ||
41f542e7 ILT |
415 | void |
416 | add_to_rpath(const char* arg) | |
ad2d6943 | 417 | { this->rpath_.push_back(Search_directory(arg, false)); } |
41f542e7 | 418 | |
15b3cfae ILT |
419 | void |
420 | add_to_rpath_link(const char* arg) | |
ad2d6943 | 421 | { this->rpath_link_.push_back(Search_directory(arg, false)); } |
15b3cfae | 422 | |
92e059d8 ILT |
423 | void |
424 | set_shared() | |
425 | { this->is_shared_ = true; } | |
426 | ||
bae7f79e ILT |
427 | void |
428 | set_static() | |
429 | { this->is_static_ = true; } | |
430 | ||
e44fcf3b ILT |
431 | void |
432 | set_stats() | |
433 | { this->print_stats_ = true; } | |
434 | ||
ad2d6943 ILT |
435 | void |
436 | set_sysroot(const char* arg) | |
437 | { this->sysroot_ = arg; } | |
438 | ||
0c5e9c22 ILT |
439 | void |
440 | set_text_segment_address(const char* arg) | |
441 | { | |
442 | char* endptr; | |
443 | this->text_segment_address_ = strtoull(arg, &endptr, 0); | |
444 | if (*endptr != '\0' | |
445 | || this->text_segment_address_ == -1U) | |
3ae7da37 | 446 | gold_fatal(_("invalid argument to -Ttext: %s"), arg); |
0c5e9c22 ILT |
447 | } |
448 | ||
fe9a4c12 ILT |
449 | int |
450 | parse_thread_count(const char* arg) | |
451 | { | |
452 | char* endptr; | |
3ae7da37 | 453 | const int count = strtol(arg, &endptr, 0); |
fe9a4c12 | 454 | if (*endptr != '\0' || count < 0) |
3ae7da37 | 455 | gold_fatal(_("invalid thread count: %s"), arg); |
fe9a4c12 ILT |
456 | return count; |
457 | } | |
458 | ||
459 | void | |
460 | set_threads() | |
3ae7da37 ILT |
461 | { |
462 | #ifndef ENABLE_THREADS | |
463 | gold_fatal(_("--threads not supported")); | |
464 | #endif | |
465 | this->threads_ = true; | |
466 | } | |
fe9a4c12 ILT |
467 | |
468 | void | |
469 | clear_threads() | |
470 | { this->threads_ = false; } | |
471 | ||
472 | void | |
473 | set_thread_count(const char* arg) | |
474 | { | |
475 | int count = this->parse_thread_count(arg); | |
476 | this->thread_count_initial_ = count; | |
477 | this->thread_count_middle_ = count; | |
478 | this->thread_count_final_ = count; | |
479 | } | |
480 | ||
481 | void | |
482 | set_thread_count_initial(const char* arg) | |
483 | { this->thread_count_initial_ = this->parse_thread_count(arg); } | |
484 | ||
485 | void | |
486 | set_thread_count_middle(const char* arg) | |
460c00b5 | 487 | { this->thread_count_middle_ = this->parse_thread_count(arg); } |
fe9a4c12 ILT |
488 | |
489 | void | |
490 | set_thread_count_final(const char* arg) | |
460c00b5 | 491 | { this->thread_count_final_ = this->parse_thread_count(arg); } |
fe9a4c12 | 492 | |
652ec9bd ILT |
493 | void |
494 | ignore(const char*) | |
495 | { } | |
496 | ||
35cdfc9a ILT |
497 | void |
498 | set_execstack() | |
499 | { this->execstack_ = EXECSTACK_YES; } | |
500 | ||
501 | void | |
502 | set_noexecstack() | |
503 | { this->execstack_ = EXECSTACK_NO; } | |
504 | ||
c7912668 ILT |
505 | void |
506 | set_debug(unsigned int flags) | |
507 | { this->debug_ = flags; } | |
508 | ||
35cdfc9a ILT |
509 | // Handle the -z option. |
510 | void | |
511 | handle_z_option(const char*); | |
512 | ||
c7912668 ILT |
513 | // Handle the --debug option. |
514 | void | |
515 | handle_debug_option(const char*); | |
516 | ||
ad2d6943 ILT |
517 | // Apply any sysroot to the directory lists. |
518 | void | |
519 | add_sysroot(); | |
520 | ||
d391083d | 521 | const char* entry_; |
a6badf5a | 522 | bool export_dynamic_; |
fced7afd | 523 | const char* soname_; |
dbe717ef | 524 | const char* dynamic_linker_; |
bae7f79e | 525 | Dir_list search_path_; |
ca3a67a5 | 526 | int optimization_level_; |
61ba1cf9 | 527 | const char* output_file_name_; |
bae7f79e | 528 | bool is_relocatable_; |
9e2dcb77 | 529 | Strip strip_; |
e2827e5f | 530 | bool allow_shlib_undefined_; |
51b08ebe | 531 | bool symbolic_; |
9a0910c3 | 532 | CompressionMethod compress_debug_sections_; |
a2b1aa12 | 533 | bool demangle_; |
a55ce7fe | 534 | bool detect_odr_violations_; |
7da52175 | 535 | bool create_eh_frame_hdr_; |
41f542e7 | 536 | Dir_list rpath_; |
15b3cfae | 537 | Dir_list rpath_link_; |
92e059d8 | 538 | bool is_shared_; |
bae7f79e | 539 | bool is_static_; |
e44fcf3b | 540 | bool print_stats_; |
ad2d6943 | 541 | std::string sysroot_; |
0c5e9c22 | 542 | uint64_t text_segment_address_; |
fe9a4c12 ILT |
543 | bool threads_; |
544 | int thread_count_initial_; | |
545 | int thread_count_middle_; | |
546 | int thread_count_final_; | |
35cdfc9a | 547 | Execstack execstack_; |
c7912668 | 548 | unsigned int debug_; |
bae7f79e ILT |
549 | }; |
550 | ||
551 | // The current state of the position dependent options. | |
552 | ||
553 | class Position_dependent_options | |
554 | { | |
555 | public: | |
556 | Position_dependent_options(); | |
557 | ||
61611222 ILT |
558 | // -Bdynamic/-Bstatic: Whether we are searching for a static archive |
559 | // -rather than a shared object. | |
bae7f79e | 560 | bool |
dbe717ef | 561 | do_static_search() const |
bae7f79e ILT |
562 | { return this->do_static_search_; } |
563 | ||
dbe717ef ILT |
564 | // --as-needed: Whether to add a DT_NEEDED argument only if the |
565 | // dynamic object is used. | |
566 | bool | |
567 | as_needed() const | |
568 | { return this->as_needed_; } | |
bae7f79e | 569 | |
4973341a ILT |
570 | // --whole-archive: Whether to include the entire contents of an |
571 | // --archive. | |
572 | bool | |
573 | include_whole_archive() const | |
574 | { return this->include_whole_archive_; } | |
575 | ||
bae7f79e ILT |
576 | void |
577 | set_static_search() | |
578 | { this->do_static_search_ = true; } | |
579 | ||
580 | void | |
581 | set_dynamic_search() | |
582 | { this->do_static_search_ = false; } | |
583 | ||
dbe717ef ILT |
584 | void |
585 | set_as_needed() | |
586 | { this->as_needed_ = true; } | |
587 | ||
588 | void | |
589 | clear_as_needed() | |
590 | { this->as_needed_ = false; } | |
591 | ||
4973341a ILT |
592 | void |
593 | set_whole_archive() | |
594 | { this->include_whole_archive_ = true; } | |
595 | ||
596 | void | |
597 | clear_whole_archive() | |
598 | { this->include_whole_archive_ = false; } | |
599 | ||
dbe717ef | 600 | private: |
bae7f79e | 601 | bool do_static_search_; |
dbe717ef | 602 | bool as_needed_; |
4973341a | 603 | bool include_whole_archive_; |
bae7f79e ILT |
604 | }; |
605 | ||
606 | // A single file or library argument from the command line. | |
607 | ||
ead1e424 | 608 | class Input_file_argument |
bae7f79e ILT |
609 | { |
610 | public: | |
51dee2fe ILT |
611 | // name: file name or library name |
612 | // is_lib: true if name is a library name: that is, emits the leading | |
613 | // "lib" and trailing ".so"/".a" from the name | |
614 | // extra_search_path: an extra directory to look for the file, prior | |
615 | // to checking the normal library search path. If this is "", | |
616 | // then no extra directory is added. | |
617 | // options: The position dependent options at this point in the | |
ad2d6943 | 618 | // command line, such as --whole-archive. |
ead1e424 | 619 | Input_file_argument() |
51dee2fe | 620 | : name_(), is_lib_(false), extra_search_path_(""), options_() |
ead1e424 ILT |
621 | { } |
622 | ||
623 | Input_file_argument(const char* name, bool is_lib, | |
51dee2fe | 624 | const char* extra_search_path, |
ead1e424 | 625 | const Position_dependent_options& options) |
51dee2fe ILT |
626 | : name_(name), is_lib_(is_lib), extra_search_path_(extra_search_path), |
627 | options_(options) | |
bae7f79e ILT |
628 | { } |
629 | ||
630 | const char* | |
631 | name() const | |
dbe717ef | 632 | { return this->name_.c_str(); } |
bae7f79e ILT |
633 | |
634 | const Position_dependent_options& | |
635 | options() const | |
636 | { return this->options_; } | |
637 | ||
638 | bool | |
639 | is_lib() const | |
61ba1cf9 | 640 | { return this->is_lib_; } |
bae7f79e | 641 | |
51dee2fe ILT |
642 | const char* |
643 | extra_search_path() const | |
644 | { | |
645 | return (this->extra_search_path_.empty() | |
646 | ? NULL | |
647 | : this->extra_search_path_.c_str()); | |
648 | } | |
649 | ||
650 | // Return whether this file may require a search using the -L | |
651 | // options. | |
652 | bool | |
653 | may_need_search() const | |
654 | { return this->is_lib_ || !this->extra_search_path_.empty(); } | |
655 | ||
bae7f79e | 656 | private: |
dbe717ef ILT |
657 | // We use std::string, not const char*, here for convenience when |
658 | // using script files, so that we do not have to preserve the string | |
659 | // in that case. | |
660 | std::string name_; | |
61ba1cf9 | 661 | bool is_lib_; |
51dee2fe | 662 | std::string extra_search_path_; |
bae7f79e ILT |
663 | Position_dependent_options options_; |
664 | }; | |
665 | ||
ead1e424 ILT |
666 | // A file or library, or a group, from the command line. |
667 | ||
668 | class Input_argument | |
669 | { | |
670 | public: | |
671 | // Create a file or library argument. | |
672 | explicit Input_argument(Input_file_argument file) | |
673 | : is_file_(true), file_(file), group_(NULL) | |
674 | { } | |
675 | ||
676 | // Create a group argument. | |
677 | explicit Input_argument(Input_file_group* group) | |
678 | : is_file_(false), group_(group) | |
679 | { } | |
680 | ||
681 | // Return whether this is a file. | |
682 | bool | |
683 | is_file() const | |
684 | { return this->is_file_; } | |
685 | ||
686 | // Return whether this is a group. | |
687 | bool | |
688 | is_group() const | |
689 | { return !this->is_file_; } | |
690 | ||
691 | // Return the information about the file. | |
692 | const Input_file_argument& | |
693 | file() const | |
694 | { | |
a3ad94ed | 695 | gold_assert(this->is_file_); |
ead1e424 ILT |
696 | return this->file_; |
697 | } | |
698 | ||
699 | // Return the information about the group. | |
700 | const Input_file_group* | |
701 | group() const | |
702 | { | |
a3ad94ed | 703 | gold_assert(!this->is_file_); |
ead1e424 ILT |
704 | return this->group_; |
705 | } | |
706 | ||
707 | Input_file_group* | |
708 | group() | |
709 | { | |
a3ad94ed | 710 | gold_assert(!this->is_file_); |
ead1e424 ILT |
711 | return this->group_; |
712 | } | |
713 | ||
714 | private: | |
715 | bool is_file_; | |
716 | Input_file_argument file_; | |
717 | Input_file_group* group_; | |
718 | }; | |
719 | ||
720 | // A group from the command line. This is a set of arguments within | |
721 | // --start-group ... --end-group. | |
722 | ||
723 | class Input_file_group | |
92e059d8 | 724 | { |
ead1e424 ILT |
725 | public: |
726 | typedef std::vector<Input_argument> Files; | |
727 | typedef Files::const_iterator const_iterator; | |
728 | ||
729 | Input_file_group() | |
730 | : files_() | |
731 | { } | |
732 | ||
733 | // Add a file to the end of the group. | |
734 | void | |
735 | add_file(const Input_file_argument& arg) | |
736 | { this->files_.push_back(Input_argument(arg)); } | |
737 | ||
738 | // Iterators to iterate over the group contents. | |
739 | ||
740 | const_iterator | |
741 | begin() const | |
742 | { return this->files_.begin(); } | |
743 | ||
744 | const_iterator | |
745 | end() const | |
746 | { return this->files_.end(); } | |
747 | ||
748 | private: | |
749 | Files files_; | |
92e059d8 ILT |
750 | }; |
751 | ||
dbe717ef ILT |
752 | // A list of files from the command line or a script. |
753 | ||
754 | class Input_arguments | |
755 | { | |
756 | public: | |
757 | typedef std::vector<Input_argument> Input_argument_list; | |
758 | typedef Input_argument_list::const_iterator const_iterator; | |
759 | ||
760 | Input_arguments() | |
761 | : input_argument_list_(), in_group_(false) | |
762 | { } | |
763 | ||
764 | // Add a file. | |
765 | void | |
766 | add_file(const Input_file_argument& arg); | |
767 | ||
768 | // Start a group (the --start-group option). | |
769 | void | |
770 | start_group(); | |
771 | ||
772 | // End a group (the --end-group option). | |
773 | void | |
774 | end_group(); | |
775 | ||
776 | // Return whether we are currently in a group. | |
777 | bool | |
778 | in_group() const | |
779 | { return this->in_group_; } | |
780 | ||
fe9a4c12 ILT |
781 | // The number of entries in the list. |
782 | int | |
783 | size() const | |
784 | { return this->input_argument_list_.size(); } | |
785 | ||
dbe717ef ILT |
786 | // Iterators to iterate over the list of input files. |
787 | ||
788 | const_iterator | |
789 | begin() const | |
790 | { return this->input_argument_list_.begin(); } | |
791 | ||
792 | const_iterator | |
793 | end() const | |
794 | { return this->input_argument_list_.end(); } | |
795 | ||
796 | // Return whether the list is empty. | |
797 | bool | |
798 | empty() const | |
799 | { return this->input_argument_list_.empty(); } | |
800 | ||
801 | private: | |
802 | Input_argument_list input_argument_list_; | |
803 | bool in_group_; | |
804 | }; | |
805 | ||
bae7f79e ILT |
806 | // All the information read from the command line. |
807 | ||
808 | class Command_line | |
809 | { | |
810 | public: | |
ead1e424 ILT |
811 | typedef Input_arguments::const_iterator const_iterator; |
812 | ||
bae7f79e ILT |
813 | Command_line(); |
814 | ||
815 | // Process the command line options. This will exit with an | |
816 | // appropriate error message if an unrecognized option is seen. | |
817 | void | |
818 | process(int argc, char** argv); | |
819 | ||
a0451b38 ILT |
820 | // Process one command-line option. This takes the index of argv to |
821 | // process, and returns the index for the next option. | |
822 | int | |
823 | process_one_option(int argc, char** argv, int i, bool* no_more_options); | |
824 | ||
61ba1cf9 ILT |
825 | // Handle a -l option. |
826 | int | |
3c2fafa5 | 827 | process_l_option(int, char**, char*, bool); |
61ba1cf9 | 828 | |
ead1e424 ILT |
829 | // Handle a --start-group option. |
830 | void | |
831 | start_group(const char* arg); | |
832 | ||
833 | // Handle a --end-group option. | |
834 | void | |
835 | end_group(const char* arg); | |
836 | ||
d391083d ILT |
837 | // Set the entry symbol from a linker script. |
838 | void | |
839 | set_entry(const char* entry) | |
840 | { this->options_.set_entry(entry); } | |
841 | ||
3c2fafa5 ILT |
842 | // Get an option argument--a helper function for special processing. |
843 | const char* | |
844 | get_special_argument(const char* longname, int argc, char** argv, | |
845 | const char* arg, bool long_option, | |
846 | int *pret); | |
847 | ||
61ba1cf9 | 848 | // Get the general options. |
bae7f79e ILT |
849 | const General_options& |
850 | options() const | |
851 | { return this->options_; } | |
852 | ||
3c2fafa5 ILT |
853 | // Get the position dependent options. |
854 | const Position_dependent_options& | |
855 | position_dependent_options() const | |
856 | { return this->position_options_; } | |
857 | ||
fe9a4c12 ILT |
858 | // The number of input files. |
859 | int | |
860 | number_of_input_files() const | |
861 | { return this->inputs_.size(); } | |
862 | ||
ead1e424 ILT |
863 | // Iterators to iterate over the list of input files. |
864 | ||
865 | const_iterator | |
866 | begin() const | |
867 | { return this->inputs_.begin(); } | |
868 | ||
869 | const_iterator | |
870 | end() const | |
871 | { return this->inputs_.end(); } | |
bae7f79e ILT |
872 | |
873 | private: | |
ead1e424 ILT |
874 | Command_line(const Command_line&); |
875 | Command_line& operator=(const Command_line&); | |
876 | ||
877 | // Report usage error. | |
878 | void | |
879 | usage() ATTRIBUTE_NORETURN; | |
880 | void | |
881 | usage(const char* msg, const char* opt) ATTRIBUTE_NORETURN; | |
882 | void | |
883 | usage(const char* msg, char opt) ATTRIBUTE_NORETURN; | |
884 | ||
885 | // Apply a command line option. | |
886 | void | |
887 | apply_option(const gold::options::One_option&, const char*); | |
888 | ||
889 | // Add a file. | |
890 | void | |
891 | add_file(const char* name, bool is_lib); | |
bae7f79e | 892 | |
46738c9a ILT |
893 | // Examine the result of processing the command-line, and verify |
894 | // the flags do not contradict each other or are otherwise illegal. | |
895 | void | |
896 | normalize_options(); | |
897 | ||
bae7f79e ILT |
898 | General_options options_; |
899 | Position_dependent_options position_options_; | |
ead1e424 | 900 | Input_arguments inputs_; |
bae7f79e ILT |
901 | }; |
902 | ||
903 | } // End namespace gold. | |
904 | ||
905 | #endif // !defined(GOLD_OPTIONS_H) |