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Commit | Line | Data |
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bae7f79e ILT |
1 | // options.c -- handle command line options for gold |
2 | ||
fd9d194f | 3 | // Copyright 2006, 2007, 2008, 2009 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 CC |
52 | // This flag is TRUE if we should register the command-line options as they |
53 | // are constructed. It is set after contruction of the options within | |
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 | |
62 | // one of thes data structures. | |
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) | |
104 | { | |
105 | // -z takes long-names only. | |
106 | gold_assert(this->dashes != DASH_Z); | |
a4d4b13f | 107 | len += printf(" %s", gettext(this->helparg)); |
ee1fe73e ILT |
108 | } |
109 | comma = true; | |
110 | } | |
111 | if (!this->longname.empty() | |
112 | && !(this->longname[0] == this->shortname | |
113 | && this->longname[1] == '\0')) | |
114 | { | |
115 | if (comma) | |
116 | len += printf(", "); | |
117 | switch (this->dashes) | |
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 | } | |
131 | len += printf("%s", this->longname.c_str()); | |
132 | if (this->helparg) | |
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 ? '=' : ' ', | |
a4d4b13f | 137 | gettext(this->helparg)); |
ee1fe73e ILT |
138 | } |
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 ILT |
172 | |
173 | // REPORT_BUGS_TO is defined in bfd/bfdver.h. | |
174 | const char* report = REPORT_BUGS_TO; | |
175 | if (*report != '\0') | |
176 | printf(_("Report bugs to %s\n"), report); | |
ee1fe73e | 177 | } |
61ba1cf9 | 178 | |
ee1fe73e ILT |
179 | // For bool, arg will be NULL (boolean options take no argument); |
180 | // we always just set to true. | |
181 | void | |
182 | parse_bool(const char*, const char*, bool* retval) | |
bae7f79e | 183 | { |
ee1fe73e ILT |
184 | *retval = true; |
185 | } | |
bae7f79e | 186 | |
ee1fe73e ILT |
187 | void |
188 | parse_uint(const char* option_name, const char* arg, int* retval) | |
189 | { | |
190 | char* endptr; | |
191 | *retval = strtol(arg, &endptr, 0); | |
192 | if (*endptr != '\0' || retval < 0) | |
193 | gold_fatal(_("%s: invalid option value (expected an integer): %s"), | |
194 | option_name, arg); | |
195 | } | |
bc644c6c | 196 | |
c0a62865 DK |
197 | void |
198 | parse_int(const char* option_name, const char* arg, int* retval) | |
199 | { | |
200 | char* endptr; | |
201 | *retval = strtol(arg, &endptr, 0); | |
202 | if (*endptr != '\0') | |
203 | gold_fatal(_("%s: invalid option value (expected an integer): %s"), | |
204 | option_name, arg); | |
205 | } | |
206 | ||
ee1fe73e ILT |
207 | void |
208 | parse_uint64(const char* option_name, const char* arg, uint64_t *retval) | |
bc644c6c | 209 | { |
ee1fe73e ILT |
210 | char* endptr; |
211 | *retval = strtoull(arg, &endptr, 0); | |
212 | if (*endptr != '\0') | |
213 | gold_fatal(_("%s: invalid option value (expected an integer): %s"), | |
214 | option_name, arg); | |
215 | } | |
216 | ||
c18476e7 ILT |
217 | void |
218 | parse_double(const char* option_name, const char* arg, double* retval) | |
219 | { | |
220 | char* endptr; | |
221 | *retval = strtod(arg, &endptr); | |
222 | if (*endptr != '\0') | |
223 | gold_fatal(_("%s: invalid option value " | |
224 | "(expected a floating point number): %s"), | |
225 | option_name, arg); | |
226 | } | |
227 | ||
ee1fe73e ILT |
228 | void |
229 | parse_string(const char* option_name, const char* arg, const char** retval) | |
230 | { | |
231 | if (*arg == '\0') | |
232 | gold_fatal(_("%s: must take a non-empty argument"), option_name); | |
233 | *retval = arg; | |
234 | } | |
235 | ||
086a1841 ILT |
236 | void |
237 | parse_optional_string(const char*, const char* arg, const char** retval) | |
238 | { | |
239 | *retval = arg; | |
240 | } | |
241 | ||
ee1fe73e ILT |
242 | void |
243 | parse_dirlist(const char*, const char* arg, Dir_list* retval) | |
244 | { | |
245 | retval->push_back(Search_directory(arg, false)); | |
246 | } | |
247 | ||
c5818ff1 CC |
248 | void |
249 | parse_set(const char*, const char* arg, String_set* retval) | |
250 | { | |
251 | retval->insert(std::string(arg)); | |
252 | } | |
253 | ||
ee1fe73e ILT |
254 | void |
255 | parse_choices(const char* option_name, const char* arg, const char** retval, | |
256 | const char* choices[], int num_choices) | |
257 | { | |
258 | for (int i = 0; i < num_choices; i++) | |
259 | if (strcmp(choices[i], arg) == 0) | |
260 | { | |
261 | *retval = arg; | |
262 | return; | |
263 | } | |
264 | ||
265 | // If we get here, the user did not enter a valid choice, so we die. | |
266 | std::string choices_list; | |
267 | for (int i = 0; i < num_choices; i++) | |
bc644c6c | 268 | { |
ee1fe73e ILT |
269 | choices_list += choices[i]; |
270 | if (i != num_choices - 1) | |
271 | choices_list += ", "; | |
bc644c6c | 272 | } |
ee1fe73e ILT |
273 | gold_fatal(_("%s: must take one of the following arguments: %s"), |
274 | option_name, choices_list.c_str()); | |
bc644c6c ILT |
275 | } |
276 | ||
ee1fe73e | 277 | } // End namespace options. |
a5dc0706 | 278 | |
ee1fe73e ILT |
279 | // Define the handler for "special" options (set via DEFINE_special). |
280 | ||
281 | void | |
282 | General_options::parse_help(const char*, const char*, Command_line*) | |
a5dc0706 | 283 | { |
ee1fe73e ILT |
284 | options::help(); |
285 | ::exit(EXIT_SUCCESS); | |
a5dc0706 ILT |
286 | } |
287 | ||
ee1fe73e ILT |
288 | void |
289 | General_options::parse_version(const char* opt, const char*, Command_line*) | |
290 | { | |
291 | gold::print_version(opt[0] == '-' && opt[1] == 'v'); | |
292 | ::exit(EXIT_SUCCESS); | |
293 | } | |
61ba1cf9 | 294 | |
b5be4a7c DM |
295 | void |
296 | General_options::parse_V(const char*, const char*, Command_line*) | |
297 | { | |
298 | gold::print_version(true); | |
459c9f1c | 299 | this->printed_version_ = true; |
b5be4a7c DM |
300 | printf(_(" Supported targets:\n")); |
301 | std::vector<const char*> supported_names; | |
302 | gold::supported_target_names(&supported_names); | |
303 | for (std::vector<const char*>::const_iterator p = supported_names.begin(); | |
304 | p != supported_names.end(); | |
305 | ++p) | |
306 | printf(" %s\n", *p); | |
307 | } | |
308 | ||
ee1fe73e ILT |
309 | void |
310 | General_options::parse_defsym(const char*, const char* arg, | |
311 | Command_line* cmdline) | |
312 | { | |
313 | cmdline->script_options().define_symbol(arg); | |
314 | } | |
88dd47ac | 315 | |
266d0a74 ILT |
316 | void |
317 | General_options::parse_incremental_changed(const char*, const char*, | |
318 | Command_line*) | |
319 | { | |
320 | this->implicit_incremental_ = true; | |
321 | this->incremental_disposition_ = INCREMENTAL_CHANGED; | |
322 | } | |
323 | ||
324 | void | |
325 | General_options::parse_incremental_unchanged(const char*, const char*, | |
326 | Command_line*) | |
327 | { | |
328 | this->implicit_incremental_ = true; | |
329 | this->incremental_disposition_ = INCREMENTAL_UNCHANGED; | |
330 | } | |
331 | ||
332 | void | |
333 | General_options::parse_incremental_unknown(const char*, const char*, | |
334 | Command_line*) | |
335 | { | |
336 | this->implicit_incremental_ = true; | |
337 | this->incremental_disposition_ = INCREMENTAL_CHECK; | |
338 | } | |
339 | ||
ee1fe73e ILT |
340 | void |
341 | General_options::parse_library(const char*, const char* arg, | |
342 | Command_line* cmdline) | |
343 | { | |
344 | Input_file_argument file(arg, true, "", false, *this); | |
345 | cmdline->inputs().add_file(file); | |
346 | } | |
347 | ||
89fc3421 CC |
348 | #ifdef ENABLE_PLUGINS |
349 | void | |
350 | General_options::parse_plugin(const char*, const char* arg, | |
351 | Command_line*) | |
352 | { | |
353 | this->add_plugin(arg); | |
354 | } | |
4674ecfc CC |
355 | |
356 | // Parse --plugin-opt. | |
357 | ||
358 | void | |
359 | General_options::parse_plugin_opt(const char*, const char* arg, | |
360 | Command_line*) | |
361 | { | |
362 | this->add_plugin_option(arg); | |
363 | } | |
89fc3421 CC |
364 | #endif // ENABLE_PLUGINS |
365 | ||
ee1fe73e ILT |
366 | void |
367 | General_options::parse_R(const char* option, const char* arg, | |
368 | Command_line* cmdline) | |
88dd47ac | 369 | { |
88dd47ac | 370 | struct stat s; |
ee1fe73e ILT |
371 | if (::stat(arg, &s) != 0 || S_ISDIR(s.st_mode)) |
372 | this->add_to_rpath(arg); | |
88dd47ac | 373 | else |
ee1fe73e | 374 | this->parse_just_symbols(option, arg, cmdline); |
88dd47ac ILT |
375 | } |
376 | ||
ee1fe73e ILT |
377 | void |
378 | General_options::parse_just_symbols(const char*, const char* arg, | |
379 | Command_line* cmdline) | |
88dd47ac | 380 | { |
ee1fe73e ILT |
381 | Input_file_argument file(arg, false, "", true, *this); |
382 | cmdline->inputs().add_file(file); | |
88dd47ac ILT |
383 | } |
384 | ||
ee1fe73e ILT |
385 | void |
386 | General_options::parse_static(const char*, const char*, Command_line*) | |
3c2fafa5 | 387 | { |
ee1fe73e | 388 | this->set_static(true); |
09124467 ILT |
389 | } |
390 | ||
ee1fe73e ILT |
391 | void |
392 | General_options::parse_script(const char*, const char* arg, | |
393 | Command_line* cmdline) | |
09124467 | 394 | { |
ee1fe73e ILT |
395 | if (!read_commandline_script(arg, cmdline)) |
396 | gold::gold_fatal(_("unable to parse script file %s"), arg); | |
61ba1cf9 ILT |
397 | } |
398 | ||
ee1fe73e ILT |
399 | void |
400 | General_options::parse_version_script(const char*, const char* arg, | |
401 | Command_line* cmdline) | |
ead1e424 | 402 | { |
ee1fe73e ILT |
403 | if (!read_version_script(arg, cmdline)) |
404 | gold::gold_fatal(_("unable to parse version script file %s"), arg); | |
ead1e424 ILT |
405 | } |
406 | ||
c82fbeee CS |
407 | void |
408 | General_options::parse_dynamic_list(const char*, const char* arg, | |
409 | Command_line* cmdline) | |
410 | { | |
411 | if (!read_dynamic_list(arg, cmdline, &this->dynamic_list_)) | |
412 | gold::gold_fatal(_("unable to parse dynamic-list script file %s"), arg); | |
413 | } | |
414 | ||
ee1fe73e ILT |
415 | void |
416 | General_options::parse_start_group(const char*, const char*, | |
417 | Command_line* cmdline) | |
418 | { | |
419 | cmdline->inputs().start_group(); | |
420 | } | |
ead1e424 | 421 | |
ee1fe73e ILT |
422 | void |
423 | General_options::parse_end_group(const char*, const char*, | |
424 | Command_line* cmdline) | |
ead1e424 | 425 | { |
ee1fe73e | 426 | cmdline->inputs().end_group(); |
ead1e424 ILT |
427 | } |
428 | ||
65514900 | 429 | // The function add_excluded_libs() in ld/ldlang.c of GNU ld breaks up a list |
2fdd743f | 430 | // of names seperated by commas or colons and puts them in a linked list. |
65514900 CC |
431 | // We implement the same parsing of names here but store names in an unordered |
432 | // map to speed up searching of names. | |
433 | ||
434 | void | |
435 | General_options::parse_exclude_libs(const char*, const char* arg, | |
436 | Command_line*) | |
437 | { | |
438 | const char *p = arg; | |
439 | ||
440 | while (*p != '\0') | |
441 | { | |
442 | size_t length = strcspn(p, ",:"); | |
443 | this->excluded_libs_.insert(std::string(p, length)); | |
444 | p += (p[length] ? length + 1 : length); | |
445 | } | |
446 | } | |
447 | ||
448 | // The checking logic is based on the function check_excluded_libs() in | |
449 | // ld/ldlang.c of GNU ld but our implementation is different because we use | |
450 | // an unordered map instead of a linked list, which is what GNU ld uses. GNU | |
451 | // ld searches sequentially in the excluded libs list. For a given archive, | |
452 | // a match is found if the archive's name matches exactly one of the list | |
453 | // entry or if the archive's name is of the form FOO.a and FOO matches exactly | |
454 | // one of the list entry. An entry "ALL" in the list is considered as a | |
455 | // wild-card and matches any given name. | |
456 | ||
457 | bool | |
458 | General_options::check_excluded_libs (const std::string &name) const | |
459 | { | |
460 | Unordered_set<std::string>::const_iterator p; | |
461 | ||
462 | // Exit early for the most common case. | |
463 | if (excluded_libs_.empty()) | |
464 | return false; | |
465 | ||
466 | // If we see "ALL", all archives are excluded from automatic export. | |
467 | p = excluded_libs_.find(std::string("ALL")); | |
468 | if (p != excluded_libs_.end()) | |
469 | return true; | |
470 | ||
2fdd743f DK |
471 | // First strip off any directories in name. |
472 | const char *basename = lbasename(name.c_str()); | |
473 | ||
65514900 | 474 | // Try finding an exact match. |
2fdd743f | 475 | p = excluded_libs_.find(std::string(basename)); |
65514900 CC |
476 | if (p != excluded_libs_.end()) |
477 | return true; | |
478 | ||
479 | // Try matching NAME without ".a" at the end. | |
2fdd743f | 480 | size_t length = strlen(basename); |
65514900 | 481 | if ((length >= 2) |
2fdd743f DK |
482 | && (basename[length - 2] == '.') |
483 | && (basename[length - 1] == 'a')) | |
65514900 | 484 | { |
2fdd743f | 485 | p = excluded_libs_.find(std::string(basename, length - 2)); |
65514900 CC |
486 | if (p != excluded_libs_.end()) |
487 | return true; | |
488 | } | |
489 | ||
490 | return false; | |
491 | } | |
492 | ||
e6a307ba ILT |
493 | // Recognize input and output target names. The GNU linker accepts |
494 | // these with --format and --oformat. This code is intended to be | |
495 | // minimally compatible. In practice for an ELF target this would be | |
496 | // the same target as the input files; that name always start with | |
497 | // "elf". Non-ELF targets would be "srec", "symbolsrec", "tekhex", | |
498 | // "binary", "ihex". | |
499 | ||
500 | General_options::Object_format | |
501 | General_options::string_to_object_format(const char* arg) | |
502 | { | |
503 | if (strncmp(arg, "elf", 3) == 0) | |
504 | return gold::General_options::OBJECT_FORMAT_ELF; | |
505 | else if (strcmp(arg, "binary") == 0) | |
506 | return gold::General_options::OBJECT_FORMAT_BINARY; | |
507 | else | |
508 | { | |
509 | gold::gold_error(_("format '%s' not supported; treating as elf " | |
510 | "(supported formats: elf, binary)"), | |
511 | arg); | |
512 | return gold::General_options::OBJECT_FORMAT_ELF; | |
513 | } | |
514 | } | |
515 | ||
ee1fe73e | 516 | } // End namespace gold. |
bae7f79e | 517 | |
ee1fe73e | 518 | namespace |
bae7f79e | 519 | { |
bae7f79e | 520 | |
ee1fe73e ILT |
521 | void |
522 | usage() | |
523 | { | |
524 | fprintf(stderr, | |
525 | _("%s: use the --help option for usage information\n"), | |
526 | gold::program_name); | |
527 | ::exit(EXIT_FAILURE); | |
528 | } | |
bae7f79e | 529 | |
ee1fe73e ILT |
530 | void |
531 | usage(const char* msg, const char *opt) | |
532 | { | |
533 | fprintf(stderr, | |
534 | _("%s: %s: %s\n"), | |
535 | gold::program_name, opt, msg); | |
536 | usage(); | |
bae7f79e ILT |
537 | } |
538 | ||
ad2d6943 ILT |
539 | // If the default sysroot is relocatable, try relocating it based on |
540 | // the prefix FROM. | |
541 | ||
fd9d194f | 542 | static char* |
ad2d6943 ILT |
543 | get_relative_sysroot(const char* from) |
544 | { | |
545 | char* path = make_relative_prefix(gold::program_name, from, | |
ee1fe73e | 546 | TARGET_SYSTEM_ROOT); |
ad2d6943 ILT |
547 | if (path != NULL) |
548 | { | |
549 | struct stat s; | |
550 | if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode)) | |
ee1fe73e | 551 | return path; |
ad2d6943 ILT |
552 | free(path); |
553 | } | |
554 | ||
555 | return NULL; | |
556 | } | |
557 | ||
558 | // Return the default sysroot. This is set by the --with-sysroot | |
ee1fe73e ILT |
559 | // option to configure. Note we do not free the return value of |
560 | // get_relative_sysroot, which is a small memory leak, but is | |
561 | // necessary since we store this pointer directly in General_options. | |
ad2d6943 | 562 | |
fd9d194f | 563 | static const char* |
ad2d6943 ILT |
564 | get_default_sysroot() |
565 | { | |
566 | const char* sysroot = TARGET_SYSTEM_ROOT; | |
567 | if (*sysroot == '\0') | |
ee1fe73e | 568 | return NULL; |
ad2d6943 ILT |
569 | |
570 | if (TARGET_SYSTEM_ROOT_RELOCATABLE) | |
571 | { | |
ee1fe73e | 572 | char* path = get_relative_sysroot(BINDIR); |
ad2d6943 | 573 | if (path == NULL) |
ee1fe73e | 574 | path = get_relative_sysroot(TOOLBINDIR); |
ad2d6943 | 575 | if (path != NULL) |
ee1fe73e | 576 | return path; |
ad2d6943 ILT |
577 | } |
578 | ||
579 | return sysroot; | |
580 | } | |
581 | ||
ee1fe73e ILT |
582 | // Parse a long option. Such options have the form |
583 | // <-|--><option>[=arg]. If "=arg" is not present but the option | |
584 | // takes an argument, the next word is taken to the be the argument. | |
585 | // If equals_only is set, then only the <option>=<arg> form is | |
586 | // accepted, not the <option><space><arg> form. Returns a One_option | |
587 | // struct or NULL if argv[i] cannot be parsed as a long option. In | |
588 | // the not-NULL case, *arg is set to the option's argument (NULL if | |
589 | // the option takes no argument), and *i is advanced past this option. | |
590 | // NOTE: it is safe for argv and arg to point to the same place. | |
591 | gold::options::One_option* | |
592 | parse_long_option(int argc, const char** argv, bool equals_only, | |
593 | const char** arg, int* i) | |
61ba1cf9 | 594 | { |
ee1fe73e | 595 | const char* const this_argv = argv[*i]; |
bae7f79e | 596 | |
ee1fe73e ILT |
597 | const char* equals = strchr(this_argv, '='); |
598 | const char* option_start = this_argv + strspn(this_argv, "-"); | |
599 | std::string option(option_start, | |
600 | equals ? equals - option_start : strlen(option_start)); | |
35cdfc9a | 601 | |
ee1fe73e ILT |
602 | gold::options::Option_map::iterator it |
603 | = gold::options::long_options->find(option); | |
604 | if (it == gold::options::long_options->end()) | |
605 | return NULL; | |
35cdfc9a | 606 | |
ee1fe73e | 607 | gold::options::One_option* retval = it->second; |
c7912668 | 608 | |
ee1fe73e ILT |
609 | // If the dash-count doesn't match, we fail. |
610 | if (this_argv[0] != '-') // no dashes at all: had better be "-z <longopt>" | |
611 | { | |
612 | if (retval->dashes != gold::options::DASH_Z) | |
613 | return NULL; | |
614 | } | |
615 | else if (this_argv[1] != '-') // one dash | |
616 | { | |
617 | if (retval->dashes != gold::options::ONE_DASH | |
618 | && retval->dashes != gold::options::EXACTLY_ONE_DASH | |
619 | && retval->dashes != gold::options::TWO_DASHES) | |
620 | return NULL; | |
621 | } | |
622 | else // two dashes (or more!) | |
623 | { | |
624 | if (retval->dashes != gold::options::TWO_DASHES | |
625 | && retval->dashes != gold::options::EXACTLY_TWO_DASHES | |
626 | && retval->dashes != gold::options::ONE_DASH) | |
627 | return NULL; | |
628 | } | |
bae7f79e | 629 | |
ee1fe73e ILT |
630 | // Now that we know the option is good (or else bad in a way that |
631 | // will cause us to die), increment i to point past this argv. | |
632 | ++(*i); | |
bae7f79e | 633 | |
ee1fe73e ILT |
634 | // Figure out the option's argument, if any. |
635 | if (!retval->takes_argument()) | |
636 | { | |
637 | if (equals) | |
638 | usage(_("unexpected argument"), this_argv); | |
639 | else | |
640 | *arg = NULL; | |
641 | } | |
642 | else | |
643 | { | |
644 | if (equals) | |
645 | *arg = equals + 1; | |
086a1841 ILT |
646 | else if (retval->takes_optional_argument()) |
647 | *arg = retval->default_value; | |
ee1fe73e ILT |
648 | else if (*i < argc && !equals_only) |
649 | *arg = argv[(*i)++]; | |
650 | else | |
651 | usage(_("missing argument"), this_argv); | |
652 | } | |
516cb3d0 | 653 | |
ee1fe73e ILT |
654 | return retval; |
655 | } | |
656 | ||
657 | // Parse a short option. Such options have the form -<option>[arg]. | |
658 | // If "arg" is not present but the option takes an argument, the next | |
659 | // word is taken to the be the argument. If the option does not take | |
660 | // an argument, it may be followed by another short option. Returns a | |
661 | // One_option struct or NULL if argv[i] cannot be parsed as a short | |
662 | // option. In the not-NULL case, *arg is set to the option's argument | |
663 | // (NULL if the option takes no argument), and *i is advanced past | |
664 | // this option. This function keeps *i the same if we parsed a short | |
665 | // option that does not take an argument, that looks to be followed by | |
666 | // another short option in the same word. | |
667 | gold::options::One_option* | |
668 | parse_short_option(int argc, const char** argv, int pos_in_argv_i, | |
669 | const char** arg, int* i) | |
670 | { | |
671 | const char* const this_argv = argv[*i]; | |
672 | ||
673 | if (this_argv[0] != '-') | |
674 | return NULL; | |
675 | ||
676 | // We handle -z as a special case. | |
677 | static gold::options::One_option dash_z("", gold::options::DASH_Z, | |
6d71b17c | 678 | 'z', "", NULL, "Z-OPTION", false, |
086a1841 | 679 | NULL); |
ee1fe73e ILT |
680 | gold::options::One_option* retval = NULL; |
681 | if (this_argv[pos_in_argv_i] == 'z') | |
682 | retval = &dash_z; | |
683 | else | |
684 | { | |
685 | const int char_as_int = static_cast<int>(this_argv[pos_in_argv_i]); | |
686 | if (char_as_int > 0 && char_as_int < 128) | |
687 | retval = gold::options::short_options[char_as_int]; | |
688 | } | |
516cb3d0 | 689 | |
ee1fe73e ILT |
690 | if (retval == NULL) |
691 | return NULL; | |
35cdfc9a | 692 | |
ee1fe73e ILT |
693 | // Figure out the option's argument, if any. |
694 | if (!retval->takes_argument()) | |
cd72c291 | 695 | { |
ee1fe73e ILT |
696 | *arg = NULL; |
697 | // We only advance past this argument if it's the only one in argv. | |
698 | if (this_argv[pos_in_argv_i + 1] == '\0') | |
699 | ++(*i); | |
cd72c291 ILT |
700 | } |
701 | else | |
ee1fe73e ILT |
702 | { |
703 | // If we take an argument, we'll eat up this entire argv entry. | |
704 | ++(*i); | |
705 | if (this_argv[pos_in_argv_i + 1] != '\0') | |
706 | *arg = this_argv + pos_in_argv_i + 1; | |
086a1841 ILT |
707 | else if (retval->takes_optional_argument()) |
708 | *arg = retval->default_value; | |
ee1fe73e ILT |
709 | else if (*i < argc) |
710 | *arg = argv[(*i)++]; | |
711 | else | |
712 | usage(_("missing argument"), this_argv); | |
713 | } | |
cd72c291 | 714 | |
ee1fe73e ILT |
715 | // If we're a -z option, we need to parse our argument as a |
716 | // long-option, e.g. "-z stacksize=8192". | |
717 | if (retval == &dash_z) | |
35cdfc9a | 718 | { |
ee1fe73e ILT |
719 | int dummy_i = 0; |
720 | const char* dash_z_arg = *arg; | |
721 | retval = parse_long_option(1, arg, true, arg, &dummy_i); | |
722 | if (retval == NULL) | |
723 | usage(_("unknown -z option"), dash_z_arg); | |
35cdfc9a ILT |
724 | } |
725 | ||
ee1fe73e | 726 | return retval; |
c7912668 ILT |
727 | } |
728 | ||
ee1fe73e | 729 | } // End anonymous namespace. |
c7912668 | 730 | |
ee1fe73e | 731 | namespace gold |
c7912668 | 732 | { |
c7912668 | 733 | |
ee1fe73e | 734 | General_options::General_options() |
459c9f1c ILT |
735 | : printed_version_(false), |
736 | execstack_status_(General_options::EXECSTACK_FROM_INPUT), static_(false), | |
266d0a74 ILT |
737 | do_demangle_(false), plugins_(), |
738 | incremental_disposition_(INCREMENTAL_CHECK), implicit_incremental_(false) | |
ee1fe73e | 739 | { |
293c1386 CC |
740 | // Turn off option registration once construction is complete. |
741 | gold::options::ready_to_register = false; | |
ee1fe73e ILT |
742 | } |
743 | ||
744 | General_options::Object_format | |
745 | General_options::format_enum() const | |
746 | { | |
e6a307ba | 747 | return General_options::string_to_object_format(this->format()); |
ee1fe73e ILT |
748 | } |
749 | ||
750 | General_options::Object_format | |
751 | General_options::oformat_enum() const | |
752 | { | |
e6a307ba | 753 | return General_options::string_to_object_format(this->oformat()); |
35cdfc9a ILT |
754 | } |
755 | ||
ad2d6943 ILT |
756 | // Add the sysroot, if any, to the search paths. |
757 | ||
758 | void | |
759 | General_options::add_sysroot() | |
760 | { | |
ee1fe73e | 761 | if (this->sysroot() == NULL || this->sysroot()[0] == '\0') |
ad2d6943 | 762 | { |
ee1fe73e ILT |
763 | this->set_sysroot(get_default_sysroot()); |
764 | if (this->sysroot() == NULL || this->sysroot()[0] == '\0') | |
765 | return; | |
ad2d6943 ILT |
766 | } |
767 | ||
ee1fe73e | 768 | char* canonical_sysroot = lrealpath(this->sysroot()); |
ad2d6943 | 769 | |
ee1fe73e ILT |
770 | for (Dir_list::iterator p = this->library_path_.value.begin(); |
771 | p != this->library_path_.value.end(); | |
ad2d6943 | 772 | ++p) |
ee1fe73e | 773 | p->add_sysroot(this->sysroot(), canonical_sysroot); |
ad2d6943 ILT |
774 | |
775 | free(canonical_sysroot); | |
776 | } | |
777 | ||
fd9d194f ILT |
778 | // Return whether FILENAME is in a system directory. |
779 | ||
780 | bool | |
781 | General_options::is_in_system_directory(const std::string& filename) const | |
782 | { | |
783 | for (Dir_list::const_iterator p = this->library_path_.value.begin(); | |
784 | p != this->library_path_.value.end(); | |
785 | ++p) | |
786 | { | |
787 | // We use a straight string comparison rather than calling | |
788 | // FILENAME_CMP because we are only interested in the cases | |
789 | // where we found the file in a system directory, which means | |
790 | // that we used the directory name as a prefix for a -L search. | |
791 | if (p->is_system_directory() | |
792 | && filename.compare(0, p->name().size(), p->name()) == 0) | |
793 | return true; | |
794 | } | |
795 | return false; | |
796 | } | |
797 | ||
4674ecfc | 798 | // Add a plugin to the list of plugins. |
89fc3421 CC |
799 | |
800 | void | |
4674ecfc | 801 | General_options::add_plugin(const char* filename) |
89fc3421 CC |
802 | { |
803 | if (this->plugins_ == NULL) | |
804 | this->plugins_ = new Plugin_manager(*this); | |
4674ecfc CC |
805 | this->plugins_->add_plugin(filename); |
806 | } | |
807 | ||
808 | // Add a plugin option to a plugin. | |
809 | ||
810 | void | |
811 | General_options::add_plugin_option(const char* arg) | |
812 | { | |
813 | if (this->plugins_ == NULL) | |
814 | gold_fatal("--plugin-opt requires --plugin."); | |
815 | this->plugins_->add_plugin_option(arg); | |
89fc3421 CC |
816 | } |
817 | ||
ee1fe73e ILT |
818 | // Set up variables and other state that isn't set up automatically by |
819 | // the parse routine, and ensure options don't contradict each other | |
820 | // and are otherwise kosher. | |
e5756efb | 821 | |
ee1fe73e ILT |
822 | void |
823 | General_options::finalize() | |
bc644c6c | 824 | { |
ee1fe73e | 825 | // Normalize the strip modifiers. They have a total order: |
62b01cb5 ILT |
826 | // strip_all > strip_debug > strip_non_line > strip_debug_gdb. |
827 | // If one is true, set all beneath it to true as well. | |
ee1fe73e ILT |
828 | if (this->strip_all()) |
829 | this->set_strip_debug(true); | |
830 | if (this->strip_debug()) | |
62b01cb5 ILT |
831 | this->set_strip_debug_non_line(true); |
832 | if (this->strip_debug_non_line()) | |
ee1fe73e | 833 | this->set_strip_debug_gdb(true); |
bc644c6c | 834 | |
3b293544 CF |
835 | if (this->Bshareable()) |
836 | this->set_shared(true); | |
837 | ||
ee1fe73e ILT |
838 | // If the user specifies both -s and -r, convert the -s to -S. |
839 | // -r requires us to keep externally visible symbols! | |
840 | if (this->strip_all() && this->relocatable()) | |
841 | { | |
842 | this->set_strip_all(false); | |
843 | gold_assert(this->strip_debug()); | |
844 | } | |
bc644c6c | 845 | |
ee1fe73e ILT |
846 | // For us, -dc and -dp are synonyms for --define-common. |
847 | if (this->dc()) | |
848 | this->set_define_common(true); | |
849 | if (this->dp()) | |
850 | this->set_define_common(true); | |
851 | ||
852 | // We also set --define-common if we're not relocatable, as long as | |
853 | // the user didn't explicitly ask for something different. | |
854 | if (!this->user_set_define_common()) | |
855 | this->set_define_common(!this->relocatable()); | |
856 | ||
857 | // execstack_status_ is a three-state variable; update it based on | |
858 | // -z [no]execstack. | |
859 | if (this->execstack()) | |
860 | this->set_execstack_status(EXECSTACK_YES); | |
861 | else if (this->noexecstack()) | |
862 | this->set_execstack_status(EXECSTACK_NO); | |
863 | ||
086a1841 ILT |
864 | // Handle the optional argument for --demangle. |
865 | if (this->user_set_demangle()) | |
866 | { | |
867 | this->set_do_demangle(true); | |
868 | const char* style = this->demangle(); | |
869 | if (*style != '\0') | |
870 | { | |
871 | enum demangling_styles style_code; | |
872 | ||
873 | style_code = cplus_demangle_name_to_style(style); | |
874 | if (style_code == unknown_demangling) | |
875 | gold_fatal("unknown demangling style '%s'", style); | |
876 | cplus_demangle_set_style(style_code); | |
877 | } | |
878 | } | |
879 | else if (this->user_set_no_demangle()) | |
880 | this->set_do_demangle(false); | |
881 | else | |
882 | { | |
883 | // Testing COLLECT_NO_DEMANGLE makes our default demangling | |
884 | // behaviour identical to that of gcc's linker wrapper. | |
885 | this->set_do_demangle(getenv("COLLECT_NO_DEMANGLE") == NULL); | |
886 | } | |
887 | ||
7d9e3d98 ILT |
888 | // -M is equivalent to "-Map -". |
889 | if (this->print_map() && !this->user_set_Map()) | |
890 | { | |
891 | this->set_Map("-"); | |
892 | this->set_user_set_Map(); | |
893 | } | |
894 | ||
af6156ef ILT |
895 | // Using -n or -N implies -static. |
896 | if (this->nmagic() || this->omagic()) | |
897 | this->set_static(true); | |
898 | ||
ee1fe73e ILT |
899 | // If --thread_count is specified, it applies to |
900 | // --thread-count-{initial,middle,final}, though it doesn't override | |
901 | // them. | |
902 | if (this->thread_count() > 0 && this->thread_count_initial() == 0) | |
903 | this->set_thread_count_initial(this->thread_count()); | |
904 | if (this->thread_count() > 0 && this->thread_count_middle() == 0) | |
905 | this->set_thread_count_middle(this->thread_count()); | |
906 | if (this->thread_count() > 0 && this->thread_count_final() == 0) | |
907 | this->set_thread_count_final(this->thread_count()); | |
908 | ||
09ffbbe0 ILT |
909 | // Let's warn if you set the thread-count but we're going to ignore it. |
910 | #ifndef ENABLE_THREADS | |
911 | if (this->threads()) | |
912 | { | |
913 | gold_warning(_("ignoring --threads: " | |
914 | "%s was compiled without thread support"), | |
915 | program_name); | |
916 | this->set_threads(false); | |
917 | } | |
918 | if (this->thread_count() > 0 || this->thread_count_initial() > 0 | |
919 | || this->thread_count_middle() > 0 || this->thread_count_final() > 0) | |
920 | gold_warning(_("ignoring --thread-count: " | |
921 | "%s was compiled without thread support"), | |
922 | program_name); | |
923 | #endif | |
924 | ||
706e1f5e ILT |
925 | if (this->user_set_Y()) |
926 | { | |
927 | std::string s = this->Y(); | |
928 | if (s.compare(0, 2, "P,") == 0) | |
929 | s.erase(0, 2); | |
930 | ||
931 | size_t pos = 0; | |
932 | size_t next_pos; | |
933 | do | |
934 | { | |
935 | next_pos = s.find(':', pos); | |
936 | size_t len = (next_pos == std::string::npos | |
937 | ? next_pos | |
938 | : next_pos - pos); | |
939 | if (len != 0) | |
940 | this->add_to_library_path_with_sysroot(s.substr(pos, len).c_str()); | |
941 | pos = next_pos + 1; | |
942 | } | |
943 | while (next_pos != std::string::npos); | |
944 | } | |
945 | else | |
946 | { | |
947 | // Even if they don't specify it, we add -L /lib and -L /usr/lib. | |
948 | // FIXME: We should only do this when configured in native mode. | |
949 | this->add_to_library_path_with_sysroot("/lib"); | |
950 | this->add_to_library_path_with_sysroot("/usr/lib"); | |
951 | } | |
ee1fe73e | 952 | |
8c604651 CS |
953 | // Parse the contents of -retain-symbols-file into a set. |
954 | if (this->retain_symbols_file()) | |
955 | { | |
956 | std::ifstream in; | |
957 | in.open(this->retain_symbols_file()); | |
958 | if (!in) | |
959 | gold_fatal(_("unable to open -retain-symbols-file file %s: %s"), | |
960 | this->retain_symbols_file(), strerror(errno)); | |
961 | std::string line; | |
962 | std::getline(in, line); // this chops off the trailing \n, if any | |
963 | while (in) | |
964 | { | |
965 | if (!line.empty() && line[line.length() - 1] == '\r') // Windows | |
966 | line.resize(line.length() - 1); | |
967 | this->symbols_to_retain_.insert(line); | |
968 | std::getline(in, line); | |
969 | } | |
970 | } | |
971 | ||
d7ab2a47 KVH |
972 | if (this->shared() && !this->user_set_allow_shlib_undefined()) |
973 | this->set_allow_shlib_undefined(true); | |
974 | ||
ee1fe73e ILT |
975 | // Normalize library_path() by adding the sysroot to all directories |
976 | // in the path, as appropriate. | |
977 | this->add_sysroot(); | |
978 | ||
979 | // Now that we've normalized the options, check for contradictory ones. | |
4e1e25e0 CC |
980 | if (this->shared() && this->is_static()) |
981 | gold_fatal(_("-shared and -static are incompatible")); | |
982 | ||
ee1fe73e ILT |
983 | if (this->shared() && this->relocatable()) |
984 | gold_fatal(_("-shared and -r are incompatible")); | |
985 | ||
8c604651 CS |
986 | // TODO: implement support for -retain-symbols-file with -r, if needed. |
987 | if (this->relocatable() && this->retain_symbols_file()) | |
988 | gold_fatal(_("-retain-symbols-file does not yet work with -r")); | |
989 | ||
ee1fe73e ILT |
990 | if (this->oformat_enum() != General_options::OBJECT_FORMAT_ELF |
991 | && (this->shared() || this->relocatable())) | |
992 | gold_fatal(_("binary output format not compatible with -shared or -r")); | |
993 | ||
c18476e7 ILT |
994 | if (this->user_set_hash_bucket_empty_fraction() |
995 | && (this->hash_bucket_empty_fraction() < 0.0 | |
996 | || this->hash_bucket_empty_fraction() >= 1.0)) | |
997 | gold_fatal(_("--hash-bucket-empty-fraction value %g out of range " | |
998 | "[0.0, 1.0)"), | |
999 | this->hash_bucket_empty_fraction()); | |
1000 | ||
266d0a74 ILT |
1001 | if (this->implicit_incremental_ && !this->incremental()) |
1002 | gold_fatal(_("Options --incremental-changed, --incremental-unchanged, " | |
1003 | "--incremental-unknown require the use of --incremental")); | |
1004 | ||
ee1fe73e | 1005 | // FIXME: we can/should be doing a lot more sanity checking here. |
e5756efb ILT |
1006 | } |
1007 | ||
ad2d6943 ILT |
1008 | // Search_directory methods. |
1009 | ||
1010 | // This is called if we have a sysroot. Apply the sysroot if | |
1011 | // appropriate. Record whether the directory is in the sysroot. | |
1012 | ||
1013 | void | |
1014 | Search_directory::add_sysroot(const char* sysroot, | |
ee1fe73e | 1015 | const char* canonical_sysroot) |
ad2d6943 ILT |
1016 | { |
1017 | gold_assert(*sysroot != '\0'); | |
1018 | if (this->put_in_sysroot_) | |
1019 | { | |
1020 | if (!IS_DIR_SEPARATOR(this->name_[0]) | |
ee1fe73e ILT |
1021 | && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1])) |
1022 | this->name_ = '/' + this->name_; | |
ad2d6943 ILT |
1023 | this->name_ = sysroot + this->name_; |
1024 | this->is_in_sysroot_ = true; | |
1025 | } | |
1026 | else | |
1027 | { | |
1028 | // Check whether this entry is in the sysroot. To do this | |
1029 | // correctly, we need to use canonical names. Otherwise we will | |
1030 | // get confused by the ../../.. paths that gcc tends to use. | |
1031 | char* canonical_name = lrealpath(this->name_.c_str()); | |
1032 | int canonical_name_len = strlen(canonical_name); | |
1033 | int canonical_sysroot_len = strlen(canonical_sysroot); | |
1034 | if (canonical_name_len > canonical_sysroot_len | |
ee1fe73e ILT |
1035 | && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len])) |
1036 | { | |
1037 | canonical_name[canonical_sysroot_len] = '\0'; | |
1038 | if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0) | |
1039 | this->is_in_sysroot_ = true; | |
1040 | } | |
ad2d6943 ILT |
1041 | free(canonical_name); |
1042 | } | |
1043 | } | |
1044 | ||
dbe717ef ILT |
1045 | // Input_arguments methods. |
1046 | ||
1047 | // Add a file to the list. | |
1048 | ||
1049 | void | |
1050 | Input_arguments::add_file(const Input_file_argument& file) | |
1051 | { | |
1052 | if (!this->in_group_) | |
1053 | this->input_argument_list_.push_back(Input_argument(file)); | |
1054 | else | |
1055 | { | |
a3ad94ed ILT |
1056 | gold_assert(!this->input_argument_list_.empty()); |
1057 | gold_assert(this->input_argument_list_.back().is_group()); | |
dbe717ef ILT |
1058 | this->input_argument_list_.back().group()->add_file(file); |
1059 | } | |
1060 | } | |
1061 | ||
1062 | // Start a group. | |
1063 | ||
1064 | void | |
1065 | Input_arguments::start_group() | |
1066 | { | |
ee1fe73e ILT |
1067 | if (this->in_group_) |
1068 | gold_fatal(_("May not nest groups")); | |
dbe717ef ILT |
1069 | Input_file_group* group = new Input_file_group(); |
1070 | this->input_argument_list_.push_back(Input_argument(group)); | |
1071 | this->in_group_ = true; | |
1072 | } | |
1073 | ||
1074 | // End a group. | |
1075 | ||
1076 | void | |
1077 | Input_arguments::end_group() | |
1078 | { | |
ee1fe73e ILT |
1079 | if (!this->in_group_) |
1080 | gold_fatal(_("Group end without group start")); | |
dbe717ef ILT |
1081 | this->in_group_ = false; |
1082 | } | |
1083 | ||
ead1e424 | 1084 | // Command_line options. |
bae7f79e | 1085 | |
a5dc0706 | 1086 | Command_line::Command_line() |
bae7f79e ILT |
1087 | { |
1088 | } | |
1089 | ||
293c1386 CC |
1090 | // Pre_options is the hook that sets the ready_to_register flag. |
1091 | ||
1092 | Command_line::Pre_options::Pre_options() | |
1093 | { | |
1094 | gold::options::ready_to_register = true; | |
1095 | } | |
1096 | ||
ee1fe73e ILT |
1097 | // Process the command line options. For process_one_option, i is the |
1098 | // index of argv to process next, and must be an option (that is, | |
1099 | // start with a dash). The return value is the index of the next | |
1100 | // option to process (i+1 or i+2, or argc to indicate processing is | |
1101 | // done). no_more_options is set to true if (and when) "--" is seen | |
1102 | // as an option. | |
bae7f79e | 1103 | |
a0451b38 | 1104 | int |
ee1fe73e | 1105 | Command_line::process_one_option(int argc, const char** argv, int i, |
a0451b38 | 1106 | bool* no_more_options) |
bae7f79e | 1107 | { |
ee1fe73e | 1108 | gold_assert(argv[i][0] == '-' && !(*no_more_options)); |
a0451b38 | 1109 | |
ee1fe73e ILT |
1110 | // If we are reading "--", then just set no_more_options and return. |
1111 | if (argv[i][1] == '-' && argv[i][2] == '\0') | |
bae7f79e | 1112 | { |
ee1fe73e | 1113 | *no_more_options = true; |
a0451b38 ILT |
1114 | return i + 1; |
1115 | } | |
bae7f79e | 1116 | |
ee1fe73e ILT |
1117 | int new_i = i; |
1118 | options::One_option* option = NULL; | |
1119 | const char* arg = NULL; | |
bae7f79e | 1120 | |
ee1fe73e ILT |
1121 | // First, try to process argv as a long option. |
1122 | option = parse_long_option(argc, argv, false, &arg, &new_i); | |
1123 | if (option) | |
a0451b38 | 1124 | { |
ee1fe73e ILT |
1125 | option->reader->parse_to_value(argv[i], arg, this, &this->options_); |
1126 | return new_i; | |
a0451b38 | 1127 | } |
bae7f79e | 1128 | |
ee1fe73e ILT |
1129 | // Now, try to process argv as a short option. Since several short |
1130 | // options can be combined in one argv, we may have to parse a lot | |
1131 | // until we're done reading this argv. | |
1132 | int pos_in_argv_i = 1; | |
1133 | while (new_i == i) | |
a0451b38 | 1134 | { |
ee1fe73e ILT |
1135 | option = parse_short_option(argc, argv, pos_in_argv_i, &arg, &new_i); |
1136 | if (!option) | |
1137 | break; | |
1138 | option->reader->parse_to_value(argv[i], arg, this, &this->options_); | |
1139 | ++pos_in_argv_i; | |
a0451b38 | 1140 | } |
ee1fe73e ILT |
1141 | if (option) |
1142 | return new_i; | |
a0451b38 | 1143 | |
ee1fe73e ILT |
1144 | // I guess it's neither a long option nor a short option. |
1145 | usage(_("unknown option"), argv[i]); | |
1146 | return argc; | |
a0451b38 | 1147 | } |
bae7f79e | 1148 | |
bae7f79e | 1149 | |
a0451b38 | 1150 | void |
ee1fe73e | 1151 | Command_line::process(int argc, const char** argv) |
a0451b38 ILT |
1152 | { |
1153 | bool no_more_options = false; | |
1154 | int i = 0; | |
1155 | while (i < argc) | |
ead1e424 | 1156 | { |
ee1fe73e ILT |
1157 | this->position_options_.copy_from_options(this->options()); |
1158 | if (no_more_options || argv[i][0] != '-') | |
1159 | { | |
1160 | Input_file_argument file(argv[i], false, "", false, | |
1161 | this->position_options_); | |
1162 | this->inputs_.add_file(file); | |
1163 | ++i; | |
1164 | } | |
bae7f79e | 1165 | else |
ee1fe73e | 1166 | i = process_one_option(argc, argv, i, &no_more_options); |
bae7f79e | 1167 | } |
bae7f79e | 1168 | |
dbe717ef | 1169 | if (this->inputs_.in_group()) |
ee1fe73e ILT |
1170 | { |
1171 | fprintf(stderr, _("%s: missing group end\n"), program_name); | |
1172 | usage(); | |
1173 | } | |
bae7f79e | 1174 | |
ee1fe73e ILT |
1175 | // Normalize the options and ensure they don't contradict each other. |
1176 | this->options_.finalize(); | |
bae7f79e | 1177 | } |
61ba1cf9 ILT |
1178 | |
1179 | } // End namespace gold. |