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bae7f79e ILT |
1 | // options.c -- handle command line options for gold |
2 | ||
e5756efb | 3 | // Copyright 2006, 2007, 2008 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 | ||
a2b1aa12 | 25 | #include <cstdlib> |
ee1fe73e | 26 | #include <vector> |
bae7f79e | 27 | #include <iostream> |
ad2d6943 ILT |
28 | #include <sys/stat.h> |
29 | #include "filenames.h" | |
30 | #include "libiberty.h" | |
bae7f79e | 31 | |
c7912668 | 32 | #include "debug.h" |
e5756efb | 33 | #include "script.h" |
ee1fe73e | 34 | #include "target-select.h" |
bae7f79e ILT |
35 | #include "options.h" |
36 | ||
61ba1cf9 ILT |
37 | namespace gold |
38 | { | |
39 | ||
ee1fe73e ILT |
40 | General_options |
41 | Position_dependent_options::default_options_; | |
bae7f79e | 42 | |
ee1fe73e | 43 | namespace options |
bae7f79e | 44 | { |
bae7f79e | 45 | |
ee1fe73e ILT |
46 | // This global variable is set up as General_options is constructed. |
47 | static std::vector<const One_option*> registered_options; | |
bae7f79e | 48 | |
ee1fe73e ILT |
49 | // These are set up at the same time -- the variables that accept one |
50 | // dash, two, or require -z. A single variable may be in more than | |
51 | // one of thes data structures. | |
52 | typedef Unordered_map<std::string, One_option*> Option_map; | |
53 | static Option_map* long_options = NULL; | |
54 | static One_option* short_options[128]; | |
bae7f79e | 55 | |
ee1fe73e ILT |
56 | void |
57 | One_option::register_option() | |
35cdfc9a | 58 | { |
ee1fe73e | 59 | registered_options.push_back(this); |
35cdfc9a | 60 | |
ee1fe73e ILT |
61 | // We can't make long_options a static Option_map because we can't |
62 | // guarantee that will be initialized before register_option() is | |
63 | // first called. | |
64 | if (long_options == NULL) | |
65 | long_options = new Option_map; | |
cd72c291 | 66 | |
ee1fe73e ILT |
67 | // TWO_DASHES means that two dashes are preferred, but one is ok too. |
68 | if (!this->longname.empty()) | |
69 | (*long_options)[this->longname] = this; | |
35cdfc9a | 70 | |
ee1fe73e ILT |
71 | const int shortname_as_int = static_cast<int>(this->shortname); |
72 | gold_assert(shortname_as_int >= 0 && shortname_as_int < 128); | |
73 | if (this->shortname != '\0') | |
74 | short_options[shortname_as_int] = this; | |
75 | } | |
c7912668 | 76 | |
ee1fe73e ILT |
77 | void |
78 | One_option::print() const | |
c7912668 | 79 | { |
ee1fe73e ILT |
80 | bool comma = false; |
81 | printf(" "); | |
82 | int len = 2; | |
83 | if (this->shortname != '\0') | |
84 | { | |
85 | len += printf("-%c", this->shortname); | |
86 | if (this->helparg) | |
87 | { | |
88 | // -z takes long-names only. | |
89 | gold_assert(this->dashes != DASH_Z); | |
a4d4b13f | 90 | len += printf(" %s", gettext(this->helparg)); |
ee1fe73e ILT |
91 | } |
92 | comma = true; | |
93 | } | |
94 | if (!this->longname.empty() | |
95 | && !(this->longname[0] == this->shortname | |
96 | && this->longname[1] == '\0')) | |
97 | { | |
98 | if (comma) | |
99 | len += printf(", "); | |
100 | switch (this->dashes) | |
101 | { | |
102 | case options::ONE_DASH: case options::EXACTLY_ONE_DASH: | |
103 | len += printf("-"); | |
104 | break; | |
105 | case options::TWO_DASHES: case options::EXACTLY_TWO_DASHES: | |
106 | len += printf("--"); | |
107 | break; | |
108 | case options::DASH_Z: | |
109 | len += printf("-z "); | |
110 | break; | |
111 | default: | |
112 | gold_unreachable(); | |
113 | } | |
114 | len += printf("%s", this->longname.c_str()); | |
115 | if (this->helparg) | |
116 | { | |
117 | // For most options, we print "--frob FOO". But for -z | |
118 | // we print "-z frob=FOO". | |
119 | len += printf("%c%s", this->dashes == options::DASH_Z ? '=' : ' ', | |
a4d4b13f | 120 | gettext(this->helparg)); |
ee1fe73e ILT |
121 | } |
122 | } | |
123 | ||
124 | if (len >= 30) | |
125 | { | |
126 | printf("\n"); | |
127 | len = 0; | |
128 | } | |
129 | for (; len < 30; ++len) | |
130 | std::putchar(' '); | |
c7912668 | 131 | |
ee1fe73e | 132 | // TODO: if we're boolean, add " (default)" when appropriate. |
a4d4b13f | 133 | printf("%s\n", gettext(this->helpstring)); |
ee1fe73e | 134 | } |
c7912668 | 135 | |
ee1fe73e ILT |
136 | void |
137 | help() | |
bae7f79e | 138 | { |
ee1fe73e | 139 | printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name); |
bae7f79e | 140 | |
ee1fe73e ILT |
141 | std::vector<const One_option*>::const_iterator it; |
142 | for (it = registered_options.begin(); it != registered_options.end(); ++it) | |
143 | (*it)->print(); | |
144 | } | |
61ba1cf9 | 145 | |
ee1fe73e ILT |
146 | // For bool, arg will be NULL (boolean options take no argument); |
147 | // we always just set to true. | |
148 | void | |
149 | parse_bool(const char*, const char*, bool* retval) | |
bae7f79e | 150 | { |
ee1fe73e ILT |
151 | *retval = true; |
152 | } | |
bae7f79e | 153 | |
ee1fe73e ILT |
154 | void |
155 | parse_uint(const char* option_name, const char* arg, int* retval) | |
156 | { | |
157 | char* endptr; | |
158 | *retval = strtol(arg, &endptr, 0); | |
159 | if (*endptr != '\0' || retval < 0) | |
160 | gold_fatal(_("%s: invalid option value (expected an integer): %s"), | |
161 | option_name, arg); | |
162 | } | |
bc644c6c | 163 | |
ee1fe73e ILT |
164 | void |
165 | parse_uint64(const char* option_name, const char* arg, uint64_t *retval) | |
bc644c6c | 166 | { |
ee1fe73e ILT |
167 | char* endptr; |
168 | *retval = strtoull(arg, &endptr, 0); | |
169 | if (*endptr != '\0') | |
170 | gold_fatal(_("%s: invalid option value (expected an integer): %s"), | |
171 | option_name, arg); | |
172 | } | |
173 | ||
c18476e7 ILT |
174 | void |
175 | parse_double(const char* option_name, const char* arg, double* retval) | |
176 | { | |
177 | char* endptr; | |
178 | *retval = strtod(arg, &endptr); | |
179 | if (*endptr != '\0') | |
180 | gold_fatal(_("%s: invalid option value " | |
181 | "(expected a floating point number): %s"), | |
182 | option_name, arg); | |
183 | } | |
184 | ||
ee1fe73e ILT |
185 | void |
186 | parse_string(const char* option_name, const char* arg, const char** retval) | |
187 | { | |
188 | if (*arg == '\0') | |
189 | gold_fatal(_("%s: must take a non-empty argument"), option_name); | |
190 | *retval = arg; | |
191 | } | |
192 | ||
193 | void | |
194 | parse_dirlist(const char*, const char* arg, Dir_list* retval) | |
195 | { | |
196 | retval->push_back(Search_directory(arg, false)); | |
197 | } | |
198 | ||
199 | void | |
200 | parse_choices(const char* option_name, const char* arg, const char** retval, | |
201 | const char* choices[], int num_choices) | |
202 | { | |
203 | for (int i = 0; i < num_choices; i++) | |
204 | if (strcmp(choices[i], arg) == 0) | |
205 | { | |
206 | *retval = arg; | |
207 | return; | |
208 | } | |
209 | ||
210 | // If we get here, the user did not enter a valid choice, so we die. | |
211 | std::string choices_list; | |
212 | for (int i = 0; i < num_choices; i++) | |
bc644c6c | 213 | { |
ee1fe73e ILT |
214 | choices_list += choices[i]; |
215 | if (i != num_choices - 1) | |
216 | choices_list += ", "; | |
bc644c6c | 217 | } |
ee1fe73e ILT |
218 | gold_fatal(_("%s: must take one of the following arguments: %s"), |
219 | option_name, choices_list.c_str()); | |
bc644c6c ILT |
220 | } |
221 | ||
ee1fe73e | 222 | } // End namespace options. |
a5dc0706 | 223 | |
ee1fe73e ILT |
224 | // Define the handler for "special" options (set via DEFINE_special). |
225 | ||
226 | void | |
227 | General_options::parse_help(const char*, const char*, Command_line*) | |
a5dc0706 | 228 | { |
ee1fe73e ILT |
229 | options::help(); |
230 | ::exit(EXIT_SUCCESS); | |
a5dc0706 ILT |
231 | } |
232 | ||
ee1fe73e ILT |
233 | void |
234 | General_options::parse_version(const char* opt, const char*, Command_line*) | |
235 | { | |
236 | gold::print_version(opt[0] == '-' && opt[1] == 'v'); | |
237 | ::exit(EXIT_SUCCESS); | |
238 | } | |
61ba1cf9 | 239 | |
ee1fe73e ILT |
240 | void |
241 | General_options::parse_Bstatic(const char*, const char*, Command_line*) | |
61ba1cf9 | 242 | { |
ee1fe73e | 243 | this->set_Bdynamic(false); |
3c2fafa5 ILT |
244 | } |
245 | ||
ee1fe73e ILT |
246 | void |
247 | General_options::parse_defsym(const char*, const char* arg, | |
248 | Command_line* cmdline) | |
249 | { | |
250 | cmdline->script_options().define_symbol(arg); | |
251 | } | |
88dd47ac | 252 | |
ee1fe73e ILT |
253 | void |
254 | General_options::parse_library(const char*, const char* arg, | |
255 | Command_line* cmdline) | |
256 | { | |
257 | Input_file_argument file(arg, true, "", false, *this); | |
258 | cmdline->inputs().add_file(file); | |
259 | } | |
260 | ||
261 | void | |
262 | General_options::parse_R(const char* option, const char* arg, | |
263 | Command_line* cmdline) | |
88dd47ac | 264 | { |
88dd47ac | 265 | struct stat s; |
ee1fe73e ILT |
266 | if (::stat(arg, &s) != 0 || S_ISDIR(s.st_mode)) |
267 | this->add_to_rpath(arg); | |
88dd47ac | 268 | else |
ee1fe73e | 269 | this->parse_just_symbols(option, arg, cmdline); |
88dd47ac ILT |
270 | } |
271 | ||
ee1fe73e ILT |
272 | void |
273 | General_options::parse_just_symbols(const char*, const char* arg, | |
274 | Command_line* cmdline) | |
88dd47ac | 275 | { |
ee1fe73e ILT |
276 | Input_file_argument file(arg, false, "", true, *this); |
277 | cmdline->inputs().add_file(file); | |
88dd47ac ILT |
278 | } |
279 | ||
ee1fe73e ILT |
280 | void |
281 | General_options::parse_static(const char*, const char*, Command_line*) | |
3c2fafa5 | 282 | { |
ee1fe73e | 283 | this->set_static(true); |
09124467 ILT |
284 | } |
285 | ||
ee1fe73e ILT |
286 | void |
287 | General_options::parse_script(const char*, const char* arg, | |
288 | Command_line* cmdline) | |
09124467 | 289 | { |
ee1fe73e ILT |
290 | if (!read_commandline_script(arg, cmdline)) |
291 | gold::gold_fatal(_("unable to parse script file %s"), arg); | |
61ba1cf9 ILT |
292 | } |
293 | ||
ee1fe73e ILT |
294 | void |
295 | General_options::parse_version_script(const char*, const char* arg, | |
296 | Command_line* cmdline) | |
ead1e424 | 297 | { |
ee1fe73e ILT |
298 | if (!read_version_script(arg, cmdline)) |
299 | gold::gold_fatal(_("unable to parse version script file %s"), arg); | |
ead1e424 ILT |
300 | } |
301 | ||
ee1fe73e ILT |
302 | void |
303 | General_options::parse_start_group(const char*, const char*, | |
304 | Command_line* cmdline) | |
305 | { | |
306 | cmdline->inputs().start_group(); | |
307 | } | |
ead1e424 | 308 | |
ee1fe73e ILT |
309 | void |
310 | General_options::parse_end_group(const char*, const char*, | |
311 | Command_line* cmdline) | |
ead1e424 | 312 | { |
ee1fe73e | 313 | cmdline->inputs().end_group(); |
ead1e424 ILT |
314 | } |
315 | ||
ee1fe73e | 316 | } // End namespace gold. |
bae7f79e | 317 | |
ee1fe73e | 318 | namespace |
bae7f79e | 319 | { |
bae7f79e | 320 | |
ee1fe73e ILT |
321 | void |
322 | usage() | |
323 | { | |
324 | fprintf(stderr, | |
325 | _("%s: use the --help option for usage information\n"), | |
326 | gold::program_name); | |
327 | ::exit(EXIT_FAILURE); | |
328 | } | |
bae7f79e | 329 | |
ee1fe73e ILT |
330 | void |
331 | usage(const char* msg, const char *opt) | |
332 | { | |
333 | fprintf(stderr, | |
334 | _("%s: %s: %s\n"), | |
335 | gold::program_name, opt, msg); | |
336 | usage(); | |
bae7f79e ILT |
337 | } |
338 | ||
ee1fe73e ILT |
339 | // Recognize input and output target names. The GNU linker accepts |
340 | // these with --format and --oformat. This code is intended to be | |
341 | // minimally compatible. In practice for an ELF target this would be | |
342 | // the same target as the input files; that name always start with | |
343 | // "elf". Non-ELF targets would be "srec", "symbolsrec", "tekhex", | |
344 | // "binary", "ihex". | |
8486ee48 | 345 | |
ee1fe73e ILT |
346 | gold::General_options::Object_format |
347 | string_to_object_format(const char* arg) | |
8486ee48 | 348 | { |
ee1fe73e ILT |
349 | if (strncmp(arg, "elf", 3) == 0) |
350 | return gold::General_options::OBJECT_FORMAT_ELF; | |
351 | else if (strcmp(arg, "binary") == 0) | |
352 | return gold::General_options::OBJECT_FORMAT_BINARY; | |
353 | else | |
354 | { | |
09ffbbe0 | 355 | gold::gold_error(_("format '%s' not supported; treating as elf " |
ee1fe73e ILT |
356 | "(supported formats: elf, binary)"), |
357 | arg); | |
358 | return gold::General_options::OBJECT_FORMAT_ELF; | |
359 | } | |
8486ee48 ILT |
360 | } |
361 | ||
ad2d6943 ILT |
362 | // If the default sysroot is relocatable, try relocating it based on |
363 | // the prefix FROM. | |
364 | ||
365 | char* | |
366 | get_relative_sysroot(const char* from) | |
367 | { | |
368 | char* path = make_relative_prefix(gold::program_name, from, | |
ee1fe73e | 369 | TARGET_SYSTEM_ROOT); |
ad2d6943 ILT |
370 | if (path != NULL) |
371 | { | |
372 | struct stat s; | |
373 | if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode)) | |
ee1fe73e | 374 | return path; |
ad2d6943 ILT |
375 | free(path); |
376 | } | |
377 | ||
378 | return NULL; | |
379 | } | |
380 | ||
381 | // Return the default sysroot. This is set by the --with-sysroot | |
ee1fe73e ILT |
382 | // option to configure. Note we do not free the return value of |
383 | // get_relative_sysroot, which is a small memory leak, but is | |
384 | // necessary since we store this pointer directly in General_options. | |
ad2d6943 | 385 | |
ee1fe73e | 386 | const char* |
ad2d6943 ILT |
387 | get_default_sysroot() |
388 | { | |
389 | const char* sysroot = TARGET_SYSTEM_ROOT; | |
390 | if (*sysroot == '\0') | |
ee1fe73e | 391 | return NULL; |
ad2d6943 ILT |
392 | |
393 | if (TARGET_SYSTEM_ROOT_RELOCATABLE) | |
394 | { | |
ee1fe73e | 395 | char* path = get_relative_sysroot(BINDIR); |
ad2d6943 | 396 | if (path == NULL) |
ee1fe73e | 397 | path = get_relative_sysroot(TOOLBINDIR); |
ad2d6943 | 398 | if (path != NULL) |
ee1fe73e | 399 | return path; |
ad2d6943 ILT |
400 | } |
401 | ||
402 | return sysroot; | |
403 | } | |
404 | ||
ee1fe73e ILT |
405 | // Parse a long option. Such options have the form |
406 | // <-|--><option>[=arg]. If "=arg" is not present but the option | |
407 | // takes an argument, the next word is taken to the be the argument. | |
408 | // If equals_only is set, then only the <option>=<arg> form is | |
409 | // accepted, not the <option><space><arg> form. Returns a One_option | |
410 | // struct or NULL if argv[i] cannot be parsed as a long option. In | |
411 | // the not-NULL case, *arg is set to the option's argument (NULL if | |
412 | // the option takes no argument), and *i is advanced past this option. | |
413 | // NOTE: it is safe for argv and arg to point to the same place. | |
414 | gold::options::One_option* | |
415 | parse_long_option(int argc, const char** argv, bool equals_only, | |
416 | const char** arg, int* i) | |
61ba1cf9 | 417 | { |
ee1fe73e | 418 | const char* const this_argv = argv[*i]; |
bae7f79e | 419 | |
ee1fe73e ILT |
420 | const char* equals = strchr(this_argv, '='); |
421 | const char* option_start = this_argv + strspn(this_argv, "-"); | |
422 | std::string option(option_start, | |
423 | equals ? equals - option_start : strlen(option_start)); | |
35cdfc9a | 424 | |
ee1fe73e ILT |
425 | gold::options::Option_map::iterator it |
426 | = gold::options::long_options->find(option); | |
427 | if (it == gold::options::long_options->end()) | |
428 | return NULL; | |
35cdfc9a | 429 | |
ee1fe73e | 430 | gold::options::One_option* retval = it->second; |
c7912668 | 431 | |
ee1fe73e ILT |
432 | // If the dash-count doesn't match, we fail. |
433 | if (this_argv[0] != '-') // no dashes at all: had better be "-z <longopt>" | |
434 | { | |
435 | if (retval->dashes != gold::options::DASH_Z) | |
436 | return NULL; | |
437 | } | |
438 | else if (this_argv[1] != '-') // one dash | |
439 | { | |
440 | if (retval->dashes != gold::options::ONE_DASH | |
441 | && retval->dashes != gold::options::EXACTLY_ONE_DASH | |
442 | && retval->dashes != gold::options::TWO_DASHES) | |
443 | return NULL; | |
444 | } | |
445 | else // two dashes (or more!) | |
446 | { | |
447 | if (retval->dashes != gold::options::TWO_DASHES | |
448 | && retval->dashes != gold::options::EXACTLY_TWO_DASHES | |
449 | && retval->dashes != gold::options::ONE_DASH) | |
450 | return NULL; | |
451 | } | |
bae7f79e | 452 | |
ee1fe73e ILT |
453 | // Now that we know the option is good (or else bad in a way that |
454 | // will cause us to die), increment i to point past this argv. | |
455 | ++(*i); | |
bae7f79e | 456 | |
ee1fe73e ILT |
457 | // Figure out the option's argument, if any. |
458 | if (!retval->takes_argument()) | |
459 | { | |
460 | if (equals) | |
461 | usage(_("unexpected argument"), this_argv); | |
462 | else | |
463 | *arg = NULL; | |
464 | } | |
465 | else | |
466 | { | |
467 | if (equals) | |
468 | *arg = equals + 1; | |
469 | else if (*i < argc && !equals_only) | |
470 | *arg = argv[(*i)++]; | |
471 | else | |
472 | usage(_("missing argument"), this_argv); | |
473 | } | |
516cb3d0 | 474 | |
ee1fe73e ILT |
475 | return retval; |
476 | } | |
477 | ||
478 | // Parse a short option. Such options have the form -<option>[arg]. | |
479 | // If "arg" is not present but the option takes an argument, the next | |
480 | // word is taken to the be the argument. If the option does not take | |
481 | // an argument, it may be followed by another short option. Returns a | |
482 | // One_option struct or NULL if argv[i] cannot be parsed as a short | |
483 | // option. In the not-NULL case, *arg is set to the option's argument | |
484 | // (NULL if the option takes no argument), and *i is advanced past | |
485 | // this option. This function keeps *i the same if we parsed a short | |
486 | // option that does not take an argument, that looks to be followed by | |
487 | // another short option in the same word. | |
488 | gold::options::One_option* | |
489 | parse_short_option(int argc, const char** argv, int pos_in_argv_i, | |
490 | const char** arg, int* i) | |
491 | { | |
492 | const char* const this_argv = argv[*i]; | |
493 | ||
494 | if (this_argv[0] != '-') | |
495 | return NULL; | |
496 | ||
497 | // We handle -z as a special case. | |
498 | static gold::options::One_option dash_z("", gold::options::DASH_Z, | |
499 | 'z', "", "-z", "Z-OPTION", NULL); | |
500 | gold::options::One_option* retval = NULL; | |
501 | if (this_argv[pos_in_argv_i] == 'z') | |
502 | retval = &dash_z; | |
503 | else | |
504 | { | |
505 | const int char_as_int = static_cast<int>(this_argv[pos_in_argv_i]); | |
506 | if (char_as_int > 0 && char_as_int < 128) | |
507 | retval = gold::options::short_options[char_as_int]; | |
508 | } | |
516cb3d0 | 509 | |
ee1fe73e ILT |
510 | if (retval == NULL) |
511 | return NULL; | |
35cdfc9a | 512 | |
ee1fe73e ILT |
513 | // Figure out the option's argument, if any. |
514 | if (!retval->takes_argument()) | |
cd72c291 | 515 | { |
ee1fe73e ILT |
516 | *arg = NULL; |
517 | // We only advance past this argument if it's the only one in argv. | |
518 | if (this_argv[pos_in_argv_i + 1] == '\0') | |
519 | ++(*i); | |
cd72c291 ILT |
520 | } |
521 | else | |
ee1fe73e ILT |
522 | { |
523 | // If we take an argument, we'll eat up this entire argv entry. | |
524 | ++(*i); | |
525 | if (this_argv[pos_in_argv_i + 1] != '\0') | |
526 | *arg = this_argv + pos_in_argv_i + 1; | |
527 | else if (*i < argc) | |
528 | *arg = argv[(*i)++]; | |
529 | else | |
530 | usage(_("missing argument"), this_argv); | |
531 | } | |
cd72c291 | 532 | |
ee1fe73e ILT |
533 | // If we're a -z option, we need to parse our argument as a |
534 | // long-option, e.g. "-z stacksize=8192". | |
535 | if (retval == &dash_z) | |
35cdfc9a | 536 | { |
ee1fe73e ILT |
537 | int dummy_i = 0; |
538 | const char* dash_z_arg = *arg; | |
539 | retval = parse_long_option(1, arg, true, arg, &dummy_i); | |
540 | if (retval == NULL) | |
541 | usage(_("unknown -z option"), dash_z_arg); | |
35cdfc9a ILT |
542 | } |
543 | ||
ee1fe73e | 544 | return retval; |
c7912668 ILT |
545 | } |
546 | ||
ee1fe73e | 547 | } // End anonymous namespace. |
c7912668 | 548 | |
ee1fe73e | 549 | namespace gold |
c7912668 | 550 | { |
c7912668 | 551 | |
ee1fe73e ILT |
552 | General_options::General_options() |
553 | : execstack_status_(General_options::EXECSTACK_FROM_INPUT), static_(false) | |
554 | { | |
555 | } | |
556 | ||
557 | General_options::Object_format | |
558 | General_options::format_enum() const | |
559 | { | |
560 | return string_to_object_format(this->format()); | |
561 | } | |
562 | ||
563 | General_options::Object_format | |
564 | General_options::oformat_enum() const | |
565 | { | |
566 | return string_to_object_format(this->oformat()); | |
35cdfc9a ILT |
567 | } |
568 | ||
ad2d6943 ILT |
569 | // Add the sysroot, if any, to the search paths. |
570 | ||
571 | void | |
572 | General_options::add_sysroot() | |
573 | { | |
ee1fe73e | 574 | if (this->sysroot() == NULL || this->sysroot()[0] == '\0') |
ad2d6943 | 575 | { |
ee1fe73e ILT |
576 | this->set_sysroot(get_default_sysroot()); |
577 | if (this->sysroot() == NULL || this->sysroot()[0] == '\0') | |
578 | return; | |
ad2d6943 ILT |
579 | } |
580 | ||
ee1fe73e | 581 | char* canonical_sysroot = lrealpath(this->sysroot()); |
ad2d6943 | 582 | |
ee1fe73e ILT |
583 | for (Dir_list::iterator p = this->library_path_.value.begin(); |
584 | p != this->library_path_.value.end(); | |
ad2d6943 | 585 | ++p) |
ee1fe73e | 586 | p->add_sysroot(this->sysroot(), canonical_sysroot); |
ad2d6943 ILT |
587 | |
588 | free(canonical_sysroot); | |
589 | } | |
590 | ||
ee1fe73e ILT |
591 | // Set up variables and other state that isn't set up automatically by |
592 | // the parse routine, and ensure options don't contradict each other | |
593 | // and are otherwise kosher. | |
e5756efb | 594 | |
ee1fe73e ILT |
595 | void |
596 | General_options::finalize() | |
bc644c6c | 597 | { |
ee1fe73e ILT |
598 | // Normalize the strip modifiers. They have a total order: |
599 | // strip_all > strip_debug > strip_debug_gdb. If one is true, set | |
600 | // all beneath it to true as well. | |
601 | if (this->strip_all()) | |
602 | this->set_strip_debug(true); | |
603 | if (this->strip_debug()) | |
604 | this->set_strip_debug_gdb(true); | |
bc644c6c | 605 | |
ee1fe73e ILT |
606 | // If the user specifies both -s and -r, convert the -s to -S. |
607 | // -r requires us to keep externally visible symbols! | |
608 | if (this->strip_all() && this->relocatable()) | |
609 | { | |
610 | this->set_strip_all(false); | |
611 | gold_assert(this->strip_debug()); | |
612 | } | |
bc644c6c | 613 | |
ee1fe73e ILT |
614 | // For us, -dc and -dp are synonyms for --define-common. |
615 | if (this->dc()) | |
616 | this->set_define_common(true); | |
617 | if (this->dp()) | |
618 | this->set_define_common(true); | |
619 | ||
620 | // We also set --define-common if we're not relocatable, as long as | |
621 | // the user didn't explicitly ask for something different. | |
622 | if (!this->user_set_define_common()) | |
623 | this->set_define_common(!this->relocatable()); | |
624 | ||
625 | // execstack_status_ is a three-state variable; update it based on | |
626 | // -z [no]execstack. | |
627 | if (this->execstack()) | |
628 | this->set_execstack_status(EXECSTACK_YES); | |
629 | else if (this->noexecstack()) | |
630 | this->set_execstack_status(EXECSTACK_NO); | |
631 | ||
632 | // If --thread_count is specified, it applies to | |
633 | // --thread-count-{initial,middle,final}, though it doesn't override | |
634 | // them. | |
635 | if (this->thread_count() > 0 && this->thread_count_initial() == 0) | |
636 | this->set_thread_count_initial(this->thread_count()); | |
637 | if (this->thread_count() > 0 && this->thread_count_middle() == 0) | |
638 | this->set_thread_count_middle(this->thread_count()); | |
639 | if (this->thread_count() > 0 && this->thread_count_final() == 0) | |
640 | this->set_thread_count_final(this->thread_count()); | |
641 | ||
09ffbbe0 ILT |
642 | // Let's warn if you set the thread-count but we're going to ignore it. |
643 | #ifndef ENABLE_THREADS | |
644 | if (this->threads()) | |
645 | { | |
646 | gold_warning(_("ignoring --threads: " | |
647 | "%s was compiled without thread support"), | |
648 | program_name); | |
649 | this->set_threads(false); | |
650 | } | |
651 | if (this->thread_count() > 0 || this->thread_count_initial() > 0 | |
652 | || this->thread_count_middle() > 0 || this->thread_count_final() > 0) | |
653 | gold_warning(_("ignoring --thread-count: " | |
654 | "%s was compiled without thread support"), | |
655 | program_name); | |
656 | #endif | |
657 | ||
ee1fe73e ILT |
658 | // Even if they don't specify it, we add -L /lib and -L /usr/lib. |
659 | // FIXME: We should only do this when configured in native mode. | |
660 | this->add_to_library_path_with_sysroot("/lib"); | |
661 | this->add_to_library_path_with_sysroot("/usr/lib"); | |
662 | ||
663 | // Normalize library_path() by adding the sysroot to all directories | |
664 | // in the path, as appropriate. | |
665 | this->add_sysroot(); | |
666 | ||
667 | // Now that we've normalized the options, check for contradictory ones. | |
668 | if (this->shared() && this->relocatable()) | |
669 | gold_fatal(_("-shared and -r are incompatible")); | |
670 | ||
671 | if (this->oformat_enum() != General_options::OBJECT_FORMAT_ELF | |
672 | && (this->shared() || this->relocatable())) | |
673 | gold_fatal(_("binary output format not compatible with -shared or -r")); | |
674 | ||
c18476e7 ILT |
675 | if (this->user_set_hash_bucket_empty_fraction() |
676 | && (this->hash_bucket_empty_fraction() < 0.0 | |
677 | || this->hash_bucket_empty_fraction() >= 1.0)) | |
678 | gold_fatal(_("--hash-bucket-empty-fraction value %g out of range " | |
679 | "[0.0, 1.0)"), | |
680 | this->hash_bucket_empty_fraction()); | |
681 | ||
ee1fe73e | 682 | // FIXME: we can/should be doing a lot more sanity checking here. |
e5756efb ILT |
683 | } |
684 | ||
ad2d6943 ILT |
685 | // Search_directory methods. |
686 | ||
687 | // This is called if we have a sysroot. Apply the sysroot if | |
688 | // appropriate. Record whether the directory is in the sysroot. | |
689 | ||
690 | void | |
691 | Search_directory::add_sysroot(const char* sysroot, | |
ee1fe73e | 692 | const char* canonical_sysroot) |
ad2d6943 ILT |
693 | { |
694 | gold_assert(*sysroot != '\0'); | |
695 | if (this->put_in_sysroot_) | |
696 | { | |
697 | if (!IS_DIR_SEPARATOR(this->name_[0]) | |
ee1fe73e ILT |
698 | && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1])) |
699 | this->name_ = '/' + this->name_; | |
ad2d6943 ILT |
700 | this->name_ = sysroot + this->name_; |
701 | this->is_in_sysroot_ = true; | |
702 | } | |
703 | else | |
704 | { | |
705 | // Check whether this entry is in the sysroot. To do this | |
706 | // correctly, we need to use canonical names. Otherwise we will | |
707 | // get confused by the ../../.. paths that gcc tends to use. | |
708 | char* canonical_name = lrealpath(this->name_.c_str()); | |
709 | int canonical_name_len = strlen(canonical_name); | |
710 | int canonical_sysroot_len = strlen(canonical_sysroot); | |
711 | if (canonical_name_len > canonical_sysroot_len | |
ee1fe73e ILT |
712 | && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len])) |
713 | { | |
714 | canonical_name[canonical_sysroot_len] = '\0'; | |
715 | if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0) | |
716 | this->is_in_sysroot_ = true; | |
717 | } | |
ad2d6943 ILT |
718 | free(canonical_name); |
719 | } | |
720 | } | |
721 | ||
dbe717ef ILT |
722 | // Input_arguments methods. |
723 | ||
724 | // Add a file to the list. | |
725 | ||
726 | void | |
727 | Input_arguments::add_file(const Input_file_argument& file) | |
728 | { | |
729 | if (!this->in_group_) | |
730 | this->input_argument_list_.push_back(Input_argument(file)); | |
731 | else | |
732 | { | |
a3ad94ed ILT |
733 | gold_assert(!this->input_argument_list_.empty()); |
734 | gold_assert(this->input_argument_list_.back().is_group()); | |
dbe717ef ILT |
735 | this->input_argument_list_.back().group()->add_file(file); |
736 | } | |
737 | } | |
738 | ||
739 | // Start a group. | |
740 | ||
741 | void | |
742 | Input_arguments::start_group() | |
743 | { | |
ee1fe73e ILT |
744 | if (this->in_group_) |
745 | gold_fatal(_("May not nest groups")); | |
dbe717ef ILT |
746 | Input_file_group* group = new Input_file_group(); |
747 | this->input_argument_list_.push_back(Input_argument(group)); | |
748 | this->in_group_ = true; | |
749 | } | |
750 | ||
751 | // End a group. | |
752 | ||
753 | void | |
754 | Input_arguments::end_group() | |
755 | { | |
ee1fe73e ILT |
756 | if (!this->in_group_) |
757 | gold_fatal(_("Group end without group start")); | |
dbe717ef ILT |
758 | this->in_group_ = false; |
759 | } | |
760 | ||
ead1e424 | 761 | // Command_line options. |
bae7f79e | 762 | |
a5dc0706 | 763 | Command_line::Command_line() |
bae7f79e ILT |
764 | { |
765 | } | |
766 | ||
ee1fe73e ILT |
767 | // Process the command line options. For process_one_option, i is the |
768 | // index of argv to process next, and must be an option (that is, | |
769 | // start with a dash). The return value is the index of the next | |
770 | // option to process (i+1 or i+2, or argc to indicate processing is | |
771 | // done). no_more_options is set to true if (and when) "--" is seen | |
772 | // as an option. | |
bae7f79e | 773 | |
a0451b38 | 774 | int |
ee1fe73e | 775 | Command_line::process_one_option(int argc, const char** argv, int i, |
a0451b38 | 776 | bool* no_more_options) |
bae7f79e | 777 | { |
ee1fe73e | 778 | gold_assert(argv[i][0] == '-' && !(*no_more_options)); |
a0451b38 | 779 | |
ee1fe73e ILT |
780 | // If we are reading "--", then just set no_more_options and return. |
781 | if (argv[i][1] == '-' && argv[i][2] == '\0') | |
bae7f79e | 782 | { |
ee1fe73e | 783 | *no_more_options = true; |
a0451b38 ILT |
784 | return i + 1; |
785 | } | |
bae7f79e | 786 | |
ee1fe73e ILT |
787 | int new_i = i; |
788 | options::One_option* option = NULL; | |
789 | const char* arg = NULL; | |
bae7f79e | 790 | |
ee1fe73e ILT |
791 | // First, try to process argv as a long option. |
792 | option = parse_long_option(argc, argv, false, &arg, &new_i); | |
793 | if (option) | |
a0451b38 | 794 | { |
ee1fe73e ILT |
795 | option->reader->parse_to_value(argv[i], arg, this, &this->options_); |
796 | return new_i; | |
a0451b38 | 797 | } |
bae7f79e | 798 | |
ee1fe73e ILT |
799 | // Now, try to process argv as a short option. Since several short |
800 | // options can be combined in one argv, we may have to parse a lot | |
801 | // until we're done reading this argv. | |
802 | int pos_in_argv_i = 1; | |
803 | while (new_i == i) | |
a0451b38 | 804 | { |
ee1fe73e ILT |
805 | option = parse_short_option(argc, argv, pos_in_argv_i, &arg, &new_i); |
806 | if (!option) | |
807 | break; | |
808 | option->reader->parse_to_value(argv[i], arg, this, &this->options_); | |
809 | ++pos_in_argv_i; | |
a0451b38 | 810 | } |
ee1fe73e ILT |
811 | if (option) |
812 | return new_i; | |
a0451b38 | 813 | |
ee1fe73e ILT |
814 | // I guess it's neither a long option nor a short option. |
815 | usage(_("unknown option"), argv[i]); | |
816 | return argc; | |
a0451b38 | 817 | } |
bae7f79e | 818 | |
bae7f79e | 819 | |
a0451b38 | 820 | void |
ee1fe73e | 821 | Command_line::process(int argc, const char** argv) |
a0451b38 ILT |
822 | { |
823 | bool no_more_options = false; | |
824 | int i = 0; | |
825 | while (i < argc) | |
ead1e424 | 826 | { |
ee1fe73e ILT |
827 | this->position_options_.copy_from_options(this->options()); |
828 | if (no_more_options || argv[i][0] != '-') | |
829 | { | |
830 | Input_file_argument file(argv[i], false, "", false, | |
831 | this->position_options_); | |
832 | this->inputs_.add_file(file); | |
833 | ++i; | |
834 | } | |
bae7f79e | 835 | else |
ee1fe73e | 836 | i = process_one_option(argc, argv, i, &no_more_options); |
bae7f79e | 837 | } |
bae7f79e | 838 | |
dbe717ef | 839 | if (this->inputs_.in_group()) |
ee1fe73e ILT |
840 | { |
841 | fprintf(stderr, _("%s: missing group end\n"), program_name); | |
842 | usage(); | |
843 | } | |
bae7f79e | 844 | |
ee1fe73e ILT |
845 | // Normalize the options and ensure they don't contradict each other. |
846 | this->options_.finalize(); | |
bae7f79e | 847 | } |
61ba1cf9 ILT |
848 | |
849 | } // End namespace gold. |