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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> |
04bf7072 | 26 | #include <cstring> |
ee1fe73e | 27 | #include <vector> |
bae7f79e | 28 | #include <iostream> |
ad2d6943 ILT |
29 | #include <sys/stat.h> |
30 | #include "filenames.h" | |
31 | #include "libiberty.h" | |
086a1841 | 32 | #include "demangle.h" |
819d6c3a | 33 | #include "../bfd/bfdver.h" |
bae7f79e | 34 | |
c7912668 | 35 | #include "debug.h" |
e5756efb | 36 | #include "script.h" |
ee1fe73e | 37 | #include "target-select.h" |
bae7f79e | 38 | #include "options.h" |
89fc3421 | 39 | #include "plugin.h" |
bae7f79e | 40 | |
61ba1cf9 ILT |
41 | namespace gold |
42 | { | |
43 | ||
ee1fe73e ILT |
44 | General_options |
45 | Position_dependent_options::default_options_; | |
bae7f79e | 46 | |
ee1fe73e | 47 | namespace options |
bae7f79e | 48 | { |
bae7f79e | 49 | |
ee1fe73e ILT |
50 | // This global variable is set up as General_options is constructed. |
51 | static std::vector<const One_option*> registered_options; | |
bae7f79e | 52 | |
ee1fe73e ILT |
53 | // These are set up at the same time -- the variables that accept one |
54 | // dash, two, or require -z. A single variable may be in more than | |
55 | // one of thes data structures. | |
56 | typedef Unordered_map<std::string, One_option*> Option_map; | |
57 | static Option_map* long_options = NULL; | |
58 | static One_option* short_options[128]; | |
bae7f79e | 59 | |
ee1fe73e ILT |
60 | void |
61 | One_option::register_option() | |
35cdfc9a | 62 | { |
ee1fe73e | 63 | registered_options.push_back(this); |
35cdfc9a | 64 | |
ee1fe73e ILT |
65 | // We can't make long_options a static Option_map because we can't |
66 | // guarantee that will be initialized before register_option() is | |
67 | // first called. | |
68 | if (long_options == NULL) | |
69 | long_options = new Option_map; | |
cd72c291 | 70 | |
ee1fe73e ILT |
71 | // TWO_DASHES means that two dashes are preferred, but one is ok too. |
72 | if (!this->longname.empty()) | |
73 | (*long_options)[this->longname] = this; | |
35cdfc9a | 74 | |
ee1fe73e ILT |
75 | const int shortname_as_int = static_cast<int>(this->shortname); |
76 | gold_assert(shortname_as_int >= 0 && shortname_as_int < 128); | |
77 | if (this->shortname != '\0') | |
78 | short_options[shortname_as_int] = this; | |
79 | } | |
c7912668 | 80 | |
ee1fe73e ILT |
81 | void |
82 | One_option::print() const | |
c7912668 | 83 | { |
ee1fe73e ILT |
84 | bool comma = false; |
85 | printf(" "); | |
86 | int len = 2; | |
87 | if (this->shortname != '\0') | |
88 | { | |
89 | len += printf("-%c", this->shortname); | |
90 | if (this->helparg) | |
91 | { | |
92 | // -z takes long-names only. | |
93 | gold_assert(this->dashes != DASH_Z); | |
a4d4b13f | 94 | len += printf(" %s", gettext(this->helparg)); |
ee1fe73e ILT |
95 | } |
96 | comma = true; | |
97 | } | |
98 | if (!this->longname.empty() | |
99 | && !(this->longname[0] == this->shortname | |
100 | && this->longname[1] == '\0')) | |
101 | { | |
102 | if (comma) | |
103 | len += printf(", "); | |
104 | switch (this->dashes) | |
105 | { | |
106 | case options::ONE_DASH: case options::EXACTLY_ONE_DASH: | |
107 | len += printf("-"); | |
108 | break; | |
109 | case options::TWO_DASHES: case options::EXACTLY_TWO_DASHES: | |
110 | len += printf("--"); | |
111 | break; | |
112 | case options::DASH_Z: | |
113 | len += printf("-z "); | |
114 | break; | |
115 | default: | |
116 | gold_unreachable(); | |
117 | } | |
118 | len += printf("%s", this->longname.c_str()); | |
119 | if (this->helparg) | |
120 | { | |
121 | // For most options, we print "--frob FOO". But for -z | |
122 | // we print "-z frob=FOO". | |
123 | len += printf("%c%s", this->dashes == options::DASH_Z ? '=' : ' ', | |
a4d4b13f | 124 | gettext(this->helparg)); |
ee1fe73e ILT |
125 | } |
126 | } | |
127 | ||
128 | if (len >= 30) | |
129 | { | |
130 | printf("\n"); | |
131 | len = 0; | |
132 | } | |
133 | for (; len < 30; ++len) | |
134 | std::putchar(' '); | |
c7912668 | 135 | |
ee1fe73e | 136 | // TODO: if we're boolean, add " (default)" when appropriate. |
a4d4b13f | 137 | printf("%s\n", gettext(this->helpstring)); |
ee1fe73e | 138 | } |
c7912668 | 139 | |
ee1fe73e ILT |
140 | void |
141 | help() | |
bae7f79e | 142 | { |
ee1fe73e | 143 | printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name); |
bae7f79e | 144 | |
ee1fe73e ILT |
145 | std::vector<const One_option*>::const_iterator it; |
146 | for (it = registered_options.begin(); it != registered_options.end(); ++it) | |
147 | (*it)->print(); | |
e96caa79 ILT |
148 | |
149 | // config.guess and libtool.m4 look in ld --help output for the | |
150 | // string "supported targets". | |
151 | printf(_("%s: supported targets:"), gold::program_name); | |
152 | std::vector<const char*> supported_names; | |
153 | gold::supported_target_names(&supported_names); | |
154 | for (std::vector<const char*>::const_iterator p = supported_names.begin(); | |
155 | p != supported_names.end(); | |
156 | ++p) | |
157 | printf(" %s", *p); | |
158 | printf("\n"); | |
819d6c3a ILT |
159 | |
160 | // REPORT_BUGS_TO is defined in bfd/bfdver.h. | |
161 | const char* report = REPORT_BUGS_TO; | |
162 | if (*report != '\0') | |
163 | printf(_("Report bugs to %s\n"), report); | |
ee1fe73e | 164 | } |
61ba1cf9 | 165 | |
ee1fe73e ILT |
166 | // For bool, arg will be NULL (boolean options take no argument); |
167 | // we always just set to true. | |
168 | void | |
169 | parse_bool(const char*, const char*, bool* retval) | |
bae7f79e | 170 | { |
ee1fe73e ILT |
171 | *retval = true; |
172 | } | |
bae7f79e | 173 | |
ee1fe73e ILT |
174 | void |
175 | parse_uint(const char* option_name, const char* arg, int* retval) | |
176 | { | |
177 | char* endptr; | |
178 | *retval = strtol(arg, &endptr, 0); | |
179 | if (*endptr != '\0' || retval < 0) | |
180 | gold_fatal(_("%s: invalid option value (expected an integer): %s"), | |
181 | option_name, arg); | |
182 | } | |
bc644c6c | 183 | |
ee1fe73e ILT |
184 | void |
185 | parse_uint64(const char* option_name, const char* arg, uint64_t *retval) | |
bc644c6c | 186 | { |
ee1fe73e ILT |
187 | char* endptr; |
188 | *retval = strtoull(arg, &endptr, 0); | |
189 | if (*endptr != '\0') | |
190 | gold_fatal(_("%s: invalid option value (expected an integer): %s"), | |
191 | option_name, arg); | |
192 | } | |
193 | ||
c18476e7 ILT |
194 | void |
195 | parse_double(const char* option_name, const char* arg, double* retval) | |
196 | { | |
197 | char* endptr; | |
198 | *retval = strtod(arg, &endptr); | |
199 | if (*endptr != '\0') | |
200 | gold_fatal(_("%s: invalid option value " | |
201 | "(expected a floating point number): %s"), | |
202 | option_name, arg); | |
203 | } | |
204 | ||
ee1fe73e ILT |
205 | void |
206 | parse_string(const char* option_name, const char* arg, const char** retval) | |
207 | { | |
208 | if (*arg == '\0') | |
209 | gold_fatal(_("%s: must take a non-empty argument"), option_name); | |
210 | *retval = arg; | |
211 | } | |
212 | ||
086a1841 ILT |
213 | void |
214 | parse_optional_string(const char*, const char* arg, const char** retval) | |
215 | { | |
216 | *retval = arg; | |
217 | } | |
218 | ||
ee1fe73e ILT |
219 | void |
220 | parse_dirlist(const char*, const char* arg, Dir_list* retval) | |
221 | { | |
222 | retval->push_back(Search_directory(arg, false)); | |
223 | } | |
224 | ||
c5818ff1 CC |
225 | void |
226 | parse_set(const char*, const char* arg, String_set* retval) | |
227 | { | |
228 | retval->insert(std::string(arg)); | |
229 | } | |
230 | ||
ee1fe73e ILT |
231 | void |
232 | parse_choices(const char* option_name, const char* arg, const char** retval, | |
233 | const char* choices[], int num_choices) | |
234 | { | |
235 | for (int i = 0; i < num_choices; i++) | |
236 | if (strcmp(choices[i], arg) == 0) | |
237 | { | |
238 | *retval = arg; | |
239 | return; | |
240 | } | |
241 | ||
242 | // If we get here, the user did not enter a valid choice, so we die. | |
243 | std::string choices_list; | |
244 | for (int i = 0; i < num_choices; i++) | |
bc644c6c | 245 | { |
ee1fe73e ILT |
246 | choices_list += choices[i]; |
247 | if (i != num_choices - 1) | |
248 | choices_list += ", "; | |
bc644c6c | 249 | } |
ee1fe73e ILT |
250 | gold_fatal(_("%s: must take one of the following arguments: %s"), |
251 | option_name, choices_list.c_str()); | |
bc644c6c ILT |
252 | } |
253 | ||
ee1fe73e | 254 | } // End namespace options. |
a5dc0706 | 255 | |
ee1fe73e ILT |
256 | // Define the handler for "special" options (set via DEFINE_special). |
257 | ||
258 | void | |
259 | General_options::parse_help(const char*, const char*, Command_line*) | |
a5dc0706 | 260 | { |
ee1fe73e ILT |
261 | options::help(); |
262 | ::exit(EXIT_SUCCESS); | |
a5dc0706 ILT |
263 | } |
264 | ||
ee1fe73e ILT |
265 | void |
266 | General_options::parse_version(const char* opt, const char*, Command_line*) | |
267 | { | |
268 | gold::print_version(opt[0] == '-' && opt[1] == 'v'); | |
269 | ::exit(EXIT_SUCCESS); | |
270 | } | |
61ba1cf9 | 271 | |
b5be4a7c DM |
272 | void |
273 | General_options::parse_V(const char*, const char*, Command_line*) | |
274 | { | |
275 | gold::print_version(true); | |
276 | printf(_(" Supported targets:\n")); | |
277 | std::vector<const char*> supported_names; | |
278 | gold::supported_target_names(&supported_names); | |
279 | for (std::vector<const char*>::const_iterator p = supported_names.begin(); | |
280 | p != supported_names.end(); | |
281 | ++p) | |
282 | printf(" %s\n", *p); | |
283 | } | |
284 | ||
ee1fe73e ILT |
285 | void |
286 | General_options::parse_defsym(const char*, const char* arg, | |
287 | Command_line* cmdline) | |
288 | { | |
289 | cmdline->script_options().define_symbol(arg); | |
290 | } | |
88dd47ac | 291 | |
ee1fe73e ILT |
292 | void |
293 | General_options::parse_library(const char*, const char* arg, | |
294 | Command_line* cmdline) | |
295 | { | |
296 | Input_file_argument file(arg, true, "", false, *this); | |
297 | cmdline->inputs().add_file(file); | |
298 | } | |
299 | ||
89fc3421 CC |
300 | #ifdef ENABLE_PLUGINS |
301 | void | |
302 | General_options::parse_plugin(const char*, const char* arg, | |
303 | Command_line*) | |
304 | { | |
305 | this->add_plugin(arg); | |
306 | } | |
307 | #endif // ENABLE_PLUGINS | |
308 | ||
ee1fe73e ILT |
309 | void |
310 | General_options::parse_R(const char* option, const char* arg, | |
311 | Command_line* cmdline) | |
88dd47ac | 312 | { |
88dd47ac | 313 | struct stat s; |
ee1fe73e ILT |
314 | if (::stat(arg, &s) != 0 || S_ISDIR(s.st_mode)) |
315 | this->add_to_rpath(arg); | |
88dd47ac | 316 | else |
ee1fe73e | 317 | this->parse_just_symbols(option, arg, cmdline); |
88dd47ac ILT |
318 | } |
319 | ||
ee1fe73e ILT |
320 | void |
321 | General_options::parse_just_symbols(const char*, const char* arg, | |
322 | Command_line* cmdline) | |
88dd47ac | 323 | { |
ee1fe73e ILT |
324 | Input_file_argument file(arg, false, "", true, *this); |
325 | cmdline->inputs().add_file(file); | |
88dd47ac ILT |
326 | } |
327 | ||
ee1fe73e ILT |
328 | void |
329 | General_options::parse_static(const char*, const char*, Command_line*) | |
3c2fafa5 | 330 | { |
ee1fe73e | 331 | this->set_static(true); |
09124467 ILT |
332 | } |
333 | ||
ee1fe73e ILT |
334 | void |
335 | General_options::parse_script(const char*, const char* arg, | |
336 | Command_line* cmdline) | |
09124467 | 337 | { |
ee1fe73e ILT |
338 | if (!read_commandline_script(arg, cmdline)) |
339 | gold::gold_fatal(_("unable to parse script file %s"), arg); | |
61ba1cf9 ILT |
340 | } |
341 | ||
ee1fe73e ILT |
342 | void |
343 | General_options::parse_version_script(const char*, const char* arg, | |
344 | Command_line* cmdline) | |
ead1e424 | 345 | { |
ee1fe73e ILT |
346 | if (!read_version_script(arg, cmdline)) |
347 | gold::gold_fatal(_("unable to parse version script file %s"), arg); | |
ead1e424 ILT |
348 | } |
349 | ||
ee1fe73e ILT |
350 | void |
351 | General_options::parse_start_group(const char*, const char*, | |
352 | Command_line* cmdline) | |
353 | { | |
354 | cmdline->inputs().start_group(); | |
355 | } | |
ead1e424 | 356 | |
ee1fe73e ILT |
357 | void |
358 | General_options::parse_end_group(const char*, const char*, | |
359 | Command_line* cmdline) | |
ead1e424 | 360 | { |
ee1fe73e | 361 | cmdline->inputs().end_group(); |
ead1e424 ILT |
362 | } |
363 | ||
ee1fe73e | 364 | } // End namespace gold. |
bae7f79e | 365 | |
ee1fe73e | 366 | namespace |
bae7f79e | 367 | { |
bae7f79e | 368 | |
ee1fe73e ILT |
369 | void |
370 | usage() | |
371 | { | |
372 | fprintf(stderr, | |
373 | _("%s: use the --help option for usage information\n"), | |
374 | gold::program_name); | |
375 | ::exit(EXIT_FAILURE); | |
376 | } | |
bae7f79e | 377 | |
ee1fe73e ILT |
378 | void |
379 | usage(const char* msg, const char *opt) | |
380 | { | |
381 | fprintf(stderr, | |
382 | _("%s: %s: %s\n"), | |
383 | gold::program_name, opt, msg); | |
384 | usage(); | |
bae7f79e ILT |
385 | } |
386 | ||
ee1fe73e ILT |
387 | // Recognize input and output target names. The GNU linker accepts |
388 | // these with --format and --oformat. This code is intended to be | |
389 | // minimally compatible. In practice for an ELF target this would be | |
390 | // the same target as the input files; that name always start with | |
391 | // "elf". Non-ELF targets would be "srec", "symbolsrec", "tekhex", | |
392 | // "binary", "ihex". | |
8486ee48 | 393 | |
ee1fe73e ILT |
394 | gold::General_options::Object_format |
395 | string_to_object_format(const char* arg) | |
8486ee48 | 396 | { |
ee1fe73e ILT |
397 | if (strncmp(arg, "elf", 3) == 0) |
398 | return gold::General_options::OBJECT_FORMAT_ELF; | |
399 | else if (strcmp(arg, "binary") == 0) | |
400 | return gold::General_options::OBJECT_FORMAT_BINARY; | |
401 | else | |
402 | { | |
09ffbbe0 | 403 | gold::gold_error(_("format '%s' not supported; treating as elf " |
ee1fe73e ILT |
404 | "(supported formats: elf, binary)"), |
405 | arg); | |
406 | return gold::General_options::OBJECT_FORMAT_ELF; | |
407 | } | |
8486ee48 ILT |
408 | } |
409 | ||
ad2d6943 ILT |
410 | // If the default sysroot is relocatable, try relocating it based on |
411 | // the prefix FROM. | |
412 | ||
413 | char* | |
414 | get_relative_sysroot(const char* from) | |
415 | { | |
416 | char* path = make_relative_prefix(gold::program_name, from, | |
ee1fe73e | 417 | TARGET_SYSTEM_ROOT); |
ad2d6943 ILT |
418 | if (path != NULL) |
419 | { | |
420 | struct stat s; | |
421 | if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode)) | |
ee1fe73e | 422 | return path; |
ad2d6943 ILT |
423 | free(path); |
424 | } | |
425 | ||
426 | return NULL; | |
427 | } | |
428 | ||
429 | // Return the default sysroot. This is set by the --with-sysroot | |
ee1fe73e ILT |
430 | // option to configure. Note we do not free the return value of |
431 | // get_relative_sysroot, which is a small memory leak, but is | |
432 | // necessary since we store this pointer directly in General_options. | |
ad2d6943 | 433 | |
ee1fe73e | 434 | const char* |
ad2d6943 ILT |
435 | get_default_sysroot() |
436 | { | |
437 | const char* sysroot = TARGET_SYSTEM_ROOT; | |
438 | if (*sysroot == '\0') | |
ee1fe73e | 439 | return NULL; |
ad2d6943 ILT |
440 | |
441 | if (TARGET_SYSTEM_ROOT_RELOCATABLE) | |
442 | { | |
ee1fe73e | 443 | char* path = get_relative_sysroot(BINDIR); |
ad2d6943 | 444 | if (path == NULL) |
ee1fe73e | 445 | path = get_relative_sysroot(TOOLBINDIR); |
ad2d6943 | 446 | if (path != NULL) |
ee1fe73e | 447 | return path; |
ad2d6943 ILT |
448 | } |
449 | ||
450 | return sysroot; | |
451 | } | |
452 | ||
ee1fe73e ILT |
453 | // Parse a long option. Such options have the form |
454 | // <-|--><option>[=arg]. If "=arg" is not present but the option | |
455 | // takes an argument, the next word is taken to the be the argument. | |
456 | // If equals_only is set, then only the <option>=<arg> form is | |
457 | // accepted, not the <option><space><arg> form. Returns a One_option | |
458 | // struct or NULL if argv[i] cannot be parsed as a long option. In | |
459 | // the not-NULL case, *arg is set to the option's argument (NULL if | |
460 | // the option takes no argument), and *i is advanced past this option. | |
461 | // NOTE: it is safe for argv and arg to point to the same place. | |
462 | gold::options::One_option* | |
463 | parse_long_option(int argc, const char** argv, bool equals_only, | |
464 | const char** arg, int* i) | |
61ba1cf9 | 465 | { |
ee1fe73e | 466 | const char* const this_argv = argv[*i]; |
bae7f79e | 467 | |
ee1fe73e ILT |
468 | const char* equals = strchr(this_argv, '='); |
469 | const char* option_start = this_argv + strspn(this_argv, "-"); | |
470 | std::string option(option_start, | |
471 | equals ? equals - option_start : strlen(option_start)); | |
35cdfc9a | 472 | |
ee1fe73e ILT |
473 | gold::options::Option_map::iterator it |
474 | = gold::options::long_options->find(option); | |
475 | if (it == gold::options::long_options->end()) | |
476 | return NULL; | |
35cdfc9a | 477 | |
ee1fe73e | 478 | gold::options::One_option* retval = it->second; |
c7912668 | 479 | |
ee1fe73e ILT |
480 | // If the dash-count doesn't match, we fail. |
481 | if (this_argv[0] != '-') // no dashes at all: had better be "-z <longopt>" | |
482 | { | |
483 | if (retval->dashes != gold::options::DASH_Z) | |
484 | return NULL; | |
485 | } | |
486 | else if (this_argv[1] != '-') // one dash | |
487 | { | |
488 | if (retval->dashes != gold::options::ONE_DASH | |
489 | && retval->dashes != gold::options::EXACTLY_ONE_DASH | |
490 | && retval->dashes != gold::options::TWO_DASHES) | |
491 | return NULL; | |
492 | } | |
493 | else // two dashes (or more!) | |
494 | { | |
495 | if (retval->dashes != gold::options::TWO_DASHES | |
496 | && retval->dashes != gold::options::EXACTLY_TWO_DASHES | |
497 | && retval->dashes != gold::options::ONE_DASH) | |
498 | return NULL; | |
499 | } | |
bae7f79e | 500 | |
ee1fe73e ILT |
501 | // Now that we know the option is good (or else bad in a way that |
502 | // will cause us to die), increment i to point past this argv. | |
503 | ++(*i); | |
bae7f79e | 504 | |
ee1fe73e ILT |
505 | // Figure out the option's argument, if any. |
506 | if (!retval->takes_argument()) | |
507 | { | |
508 | if (equals) | |
509 | usage(_("unexpected argument"), this_argv); | |
510 | else | |
511 | *arg = NULL; | |
512 | } | |
513 | else | |
514 | { | |
515 | if (equals) | |
516 | *arg = equals + 1; | |
086a1841 ILT |
517 | else if (retval->takes_optional_argument()) |
518 | *arg = retval->default_value; | |
ee1fe73e ILT |
519 | else if (*i < argc && !equals_only) |
520 | *arg = argv[(*i)++]; | |
521 | else | |
522 | usage(_("missing argument"), this_argv); | |
523 | } | |
516cb3d0 | 524 | |
ee1fe73e ILT |
525 | return retval; |
526 | } | |
527 | ||
528 | // Parse a short option. Such options have the form -<option>[arg]. | |
529 | // If "arg" is not present but the option takes an argument, the next | |
530 | // word is taken to the be the argument. If the option does not take | |
531 | // an argument, it may be followed by another short option. Returns a | |
532 | // One_option struct or NULL if argv[i] cannot be parsed as a short | |
533 | // option. In the not-NULL case, *arg is set to the option's argument | |
534 | // (NULL if the option takes no argument), and *i is advanced past | |
535 | // this option. This function keeps *i the same if we parsed a short | |
536 | // option that does not take an argument, that looks to be followed by | |
537 | // another short option in the same word. | |
538 | gold::options::One_option* | |
539 | parse_short_option(int argc, const char** argv, int pos_in_argv_i, | |
540 | const char** arg, int* i) | |
541 | { | |
542 | const char* const this_argv = argv[*i]; | |
543 | ||
544 | if (this_argv[0] != '-') | |
545 | return NULL; | |
546 | ||
547 | // We handle -z as a special case. | |
548 | static gold::options::One_option dash_z("", gold::options::DASH_Z, | |
086a1841 ILT |
549 | 'z', "", "-z", "Z-OPTION", false, |
550 | NULL); | |
ee1fe73e ILT |
551 | gold::options::One_option* retval = NULL; |
552 | if (this_argv[pos_in_argv_i] == 'z') | |
553 | retval = &dash_z; | |
554 | else | |
555 | { | |
556 | const int char_as_int = static_cast<int>(this_argv[pos_in_argv_i]); | |
557 | if (char_as_int > 0 && char_as_int < 128) | |
558 | retval = gold::options::short_options[char_as_int]; | |
559 | } | |
516cb3d0 | 560 | |
ee1fe73e ILT |
561 | if (retval == NULL) |
562 | return NULL; | |
35cdfc9a | 563 | |
ee1fe73e ILT |
564 | // Figure out the option's argument, if any. |
565 | if (!retval->takes_argument()) | |
cd72c291 | 566 | { |
ee1fe73e ILT |
567 | *arg = NULL; |
568 | // We only advance past this argument if it's the only one in argv. | |
569 | if (this_argv[pos_in_argv_i + 1] == '\0') | |
570 | ++(*i); | |
cd72c291 ILT |
571 | } |
572 | else | |
ee1fe73e ILT |
573 | { |
574 | // If we take an argument, we'll eat up this entire argv entry. | |
575 | ++(*i); | |
576 | if (this_argv[pos_in_argv_i + 1] != '\0') | |
577 | *arg = this_argv + pos_in_argv_i + 1; | |
086a1841 ILT |
578 | else if (retval->takes_optional_argument()) |
579 | *arg = retval->default_value; | |
ee1fe73e ILT |
580 | else if (*i < argc) |
581 | *arg = argv[(*i)++]; | |
582 | else | |
583 | usage(_("missing argument"), this_argv); | |
584 | } | |
cd72c291 | 585 | |
ee1fe73e ILT |
586 | // If we're a -z option, we need to parse our argument as a |
587 | // long-option, e.g. "-z stacksize=8192". | |
588 | if (retval == &dash_z) | |
35cdfc9a | 589 | { |
ee1fe73e ILT |
590 | int dummy_i = 0; |
591 | const char* dash_z_arg = *arg; | |
592 | retval = parse_long_option(1, arg, true, arg, &dummy_i); | |
593 | if (retval == NULL) | |
594 | usage(_("unknown -z option"), dash_z_arg); | |
35cdfc9a ILT |
595 | } |
596 | ||
ee1fe73e | 597 | return retval; |
c7912668 ILT |
598 | } |
599 | ||
ee1fe73e | 600 | } // End anonymous namespace. |
c7912668 | 601 | |
ee1fe73e | 602 | namespace gold |
c7912668 | 603 | { |
c7912668 | 604 | |
ee1fe73e | 605 | General_options::General_options() |
086a1841 | 606 | : execstack_status_(General_options::EXECSTACK_FROM_INPUT), static_(false), |
89fc3421 | 607 | do_demangle_(false), plugins_() |
ee1fe73e ILT |
608 | { |
609 | } | |
610 | ||
611 | General_options::Object_format | |
612 | General_options::format_enum() const | |
613 | { | |
614 | return string_to_object_format(this->format()); | |
615 | } | |
616 | ||
617 | General_options::Object_format | |
618 | General_options::oformat_enum() const | |
619 | { | |
620 | return string_to_object_format(this->oformat()); | |
35cdfc9a ILT |
621 | } |
622 | ||
ad2d6943 ILT |
623 | // Add the sysroot, if any, to the search paths. |
624 | ||
625 | void | |
626 | General_options::add_sysroot() | |
627 | { | |
ee1fe73e | 628 | if (this->sysroot() == NULL || this->sysroot()[0] == '\0') |
ad2d6943 | 629 | { |
ee1fe73e ILT |
630 | this->set_sysroot(get_default_sysroot()); |
631 | if (this->sysroot() == NULL || this->sysroot()[0] == '\0') | |
632 | return; | |
ad2d6943 ILT |
633 | } |
634 | ||
ee1fe73e | 635 | char* canonical_sysroot = lrealpath(this->sysroot()); |
ad2d6943 | 636 | |
ee1fe73e ILT |
637 | for (Dir_list::iterator p = this->library_path_.value.begin(); |
638 | p != this->library_path_.value.end(); | |
ad2d6943 | 639 | ++p) |
ee1fe73e | 640 | p->add_sysroot(this->sysroot(), canonical_sysroot); |
ad2d6943 ILT |
641 | |
642 | free(canonical_sysroot); | |
643 | } | |
644 | ||
89fc3421 CC |
645 | // Add a plugin and its arguments to the list of plugins. |
646 | ||
647 | void | |
648 | General_options::add_plugin(const char* arg) | |
649 | { | |
650 | if (this->plugins_ == NULL) | |
651 | this->plugins_ = new Plugin_manager(*this); | |
652 | this->plugins_->add_plugin(arg); | |
653 | } | |
654 | ||
ee1fe73e ILT |
655 | // Set up variables and other state that isn't set up automatically by |
656 | // the parse routine, and ensure options don't contradict each other | |
657 | // and are otherwise kosher. | |
e5756efb | 658 | |
ee1fe73e ILT |
659 | void |
660 | General_options::finalize() | |
bc644c6c | 661 | { |
ee1fe73e | 662 | // Normalize the strip modifiers. They have a total order: |
62b01cb5 ILT |
663 | // strip_all > strip_debug > strip_non_line > strip_debug_gdb. |
664 | // If one is true, set all beneath it to true as well. | |
ee1fe73e ILT |
665 | if (this->strip_all()) |
666 | this->set_strip_debug(true); | |
667 | if (this->strip_debug()) | |
62b01cb5 ILT |
668 | this->set_strip_debug_non_line(true); |
669 | if (this->strip_debug_non_line()) | |
ee1fe73e | 670 | this->set_strip_debug_gdb(true); |
bc644c6c | 671 | |
ee1fe73e ILT |
672 | // If the user specifies both -s and -r, convert the -s to -S. |
673 | // -r requires us to keep externally visible symbols! | |
674 | if (this->strip_all() && this->relocatable()) | |
675 | { | |
676 | this->set_strip_all(false); | |
677 | gold_assert(this->strip_debug()); | |
678 | } | |
bc644c6c | 679 | |
ee1fe73e ILT |
680 | // For us, -dc and -dp are synonyms for --define-common. |
681 | if (this->dc()) | |
682 | this->set_define_common(true); | |
683 | if (this->dp()) | |
684 | this->set_define_common(true); | |
685 | ||
686 | // We also set --define-common if we're not relocatable, as long as | |
687 | // the user didn't explicitly ask for something different. | |
688 | if (!this->user_set_define_common()) | |
689 | this->set_define_common(!this->relocatable()); | |
690 | ||
691 | // execstack_status_ is a three-state variable; update it based on | |
692 | // -z [no]execstack. | |
693 | if (this->execstack()) | |
694 | this->set_execstack_status(EXECSTACK_YES); | |
695 | else if (this->noexecstack()) | |
696 | this->set_execstack_status(EXECSTACK_NO); | |
697 | ||
086a1841 ILT |
698 | // Handle the optional argument for --demangle. |
699 | if (this->user_set_demangle()) | |
700 | { | |
701 | this->set_do_demangle(true); | |
702 | const char* style = this->demangle(); | |
703 | if (*style != '\0') | |
704 | { | |
705 | enum demangling_styles style_code; | |
706 | ||
707 | style_code = cplus_demangle_name_to_style(style); | |
708 | if (style_code == unknown_demangling) | |
709 | gold_fatal("unknown demangling style '%s'", style); | |
710 | cplus_demangle_set_style(style_code); | |
711 | } | |
712 | } | |
713 | else if (this->user_set_no_demangle()) | |
714 | this->set_do_demangle(false); | |
715 | else | |
716 | { | |
717 | // Testing COLLECT_NO_DEMANGLE makes our default demangling | |
718 | // behaviour identical to that of gcc's linker wrapper. | |
719 | this->set_do_demangle(getenv("COLLECT_NO_DEMANGLE") == NULL); | |
720 | } | |
721 | ||
7d9e3d98 ILT |
722 | // -M is equivalent to "-Map -". |
723 | if (this->print_map() && !this->user_set_Map()) | |
724 | { | |
725 | this->set_Map("-"); | |
726 | this->set_user_set_Map(); | |
727 | } | |
728 | ||
af6156ef ILT |
729 | // Using -n or -N implies -static. |
730 | if (this->nmagic() || this->omagic()) | |
731 | this->set_static(true); | |
732 | ||
ee1fe73e ILT |
733 | // If --thread_count is specified, it applies to |
734 | // --thread-count-{initial,middle,final}, though it doesn't override | |
735 | // them. | |
736 | if (this->thread_count() > 0 && this->thread_count_initial() == 0) | |
737 | this->set_thread_count_initial(this->thread_count()); | |
738 | if (this->thread_count() > 0 && this->thread_count_middle() == 0) | |
739 | this->set_thread_count_middle(this->thread_count()); | |
740 | if (this->thread_count() > 0 && this->thread_count_final() == 0) | |
741 | this->set_thread_count_final(this->thread_count()); | |
742 | ||
09ffbbe0 ILT |
743 | // Let's warn if you set the thread-count but we're going to ignore it. |
744 | #ifndef ENABLE_THREADS | |
745 | if (this->threads()) | |
746 | { | |
747 | gold_warning(_("ignoring --threads: " | |
748 | "%s was compiled without thread support"), | |
749 | program_name); | |
750 | this->set_threads(false); | |
751 | } | |
752 | if (this->thread_count() > 0 || this->thread_count_initial() > 0 | |
753 | || this->thread_count_middle() > 0 || this->thread_count_final() > 0) | |
754 | gold_warning(_("ignoring --thread-count: " | |
755 | "%s was compiled without thread support"), | |
756 | program_name); | |
757 | #endif | |
758 | ||
706e1f5e ILT |
759 | if (this->user_set_Y()) |
760 | { | |
761 | std::string s = this->Y(); | |
762 | if (s.compare(0, 2, "P,") == 0) | |
763 | s.erase(0, 2); | |
764 | ||
765 | size_t pos = 0; | |
766 | size_t next_pos; | |
767 | do | |
768 | { | |
769 | next_pos = s.find(':', pos); | |
770 | size_t len = (next_pos == std::string::npos | |
771 | ? next_pos | |
772 | : next_pos - pos); | |
773 | if (len != 0) | |
774 | this->add_to_library_path_with_sysroot(s.substr(pos, len).c_str()); | |
775 | pos = next_pos + 1; | |
776 | } | |
777 | while (next_pos != std::string::npos); | |
778 | } | |
779 | else | |
780 | { | |
781 | // Even if they don't specify it, we add -L /lib and -L /usr/lib. | |
782 | // FIXME: We should only do this when configured in native mode. | |
783 | this->add_to_library_path_with_sysroot("/lib"); | |
784 | this->add_to_library_path_with_sysroot("/usr/lib"); | |
785 | } | |
ee1fe73e | 786 | |
d7ab2a47 KVH |
787 | if (this->shared() && !this->user_set_allow_shlib_undefined()) |
788 | this->set_allow_shlib_undefined(true); | |
789 | ||
ee1fe73e ILT |
790 | // Normalize library_path() by adding the sysroot to all directories |
791 | // in the path, as appropriate. | |
792 | this->add_sysroot(); | |
793 | ||
794 | // Now that we've normalized the options, check for contradictory ones. | |
795 | if (this->shared() && this->relocatable()) | |
796 | gold_fatal(_("-shared and -r are incompatible")); | |
797 | ||
798 | if (this->oformat_enum() != General_options::OBJECT_FORMAT_ELF | |
799 | && (this->shared() || this->relocatable())) | |
800 | gold_fatal(_("binary output format not compatible with -shared or -r")); | |
801 | ||
c18476e7 ILT |
802 | if (this->user_set_hash_bucket_empty_fraction() |
803 | && (this->hash_bucket_empty_fraction() < 0.0 | |
804 | || this->hash_bucket_empty_fraction() >= 1.0)) | |
805 | gold_fatal(_("--hash-bucket-empty-fraction value %g out of range " | |
806 | "[0.0, 1.0)"), | |
807 | this->hash_bucket_empty_fraction()); | |
808 | ||
ee1fe73e | 809 | // FIXME: we can/should be doing a lot more sanity checking here. |
e5756efb ILT |
810 | } |
811 | ||
ad2d6943 ILT |
812 | // Search_directory methods. |
813 | ||
814 | // This is called if we have a sysroot. Apply the sysroot if | |
815 | // appropriate. Record whether the directory is in the sysroot. | |
816 | ||
817 | void | |
818 | Search_directory::add_sysroot(const char* sysroot, | |
ee1fe73e | 819 | const char* canonical_sysroot) |
ad2d6943 ILT |
820 | { |
821 | gold_assert(*sysroot != '\0'); | |
822 | if (this->put_in_sysroot_) | |
823 | { | |
824 | if (!IS_DIR_SEPARATOR(this->name_[0]) | |
ee1fe73e ILT |
825 | && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1])) |
826 | this->name_ = '/' + this->name_; | |
ad2d6943 ILT |
827 | this->name_ = sysroot + this->name_; |
828 | this->is_in_sysroot_ = true; | |
829 | } | |
830 | else | |
831 | { | |
832 | // Check whether this entry is in the sysroot. To do this | |
833 | // correctly, we need to use canonical names. Otherwise we will | |
834 | // get confused by the ../../.. paths that gcc tends to use. | |
835 | char* canonical_name = lrealpath(this->name_.c_str()); | |
836 | int canonical_name_len = strlen(canonical_name); | |
837 | int canonical_sysroot_len = strlen(canonical_sysroot); | |
838 | if (canonical_name_len > canonical_sysroot_len | |
ee1fe73e ILT |
839 | && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len])) |
840 | { | |
841 | canonical_name[canonical_sysroot_len] = '\0'; | |
842 | if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0) | |
843 | this->is_in_sysroot_ = true; | |
844 | } | |
ad2d6943 ILT |
845 | free(canonical_name); |
846 | } | |
847 | } | |
848 | ||
dbe717ef ILT |
849 | // Input_arguments methods. |
850 | ||
851 | // Add a file to the list. | |
852 | ||
853 | void | |
854 | Input_arguments::add_file(const Input_file_argument& file) | |
855 | { | |
856 | if (!this->in_group_) | |
857 | this->input_argument_list_.push_back(Input_argument(file)); | |
858 | else | |
859 | { | |
a3ad94ed ILT |
860 | gold_assert(!this->input_argument_list_.empty()); |
861 | gold_assert(this->input_argument_list_.back().is_group()); | |
dbe717ef ILT |
862 | this->input_argument_list_.back().group()->add_file(file); |
863 | } | |
864 | } | |
865 | ||
866 | // Start a group. | |
867 | ||
868 | void | |
869 | Input_arguments::start_group() | |
870 | { | |
ee1fe73e ILT |
871 | if (this->in_group_) |
872 | gold_fatal(_("May not nest groups")); | |
dbe717ef ILT |
873 | Input_file_group* group = new Input_file_group(); |
874 | this->input_argument_list_.push_back(Input_argument(group)); | |
875 | this->in_group_ = true; | |
876 | } | |
877 | ||
878 | // End a group. | |
879 | ||
880 | void | |
881 | Input_arguments::end_group() | |
882 | { | |
ee1fe73e ILT |
883 | if (!this->in_group_) |
884 | gold_fatal(_("Group end without group start")); | |
dbe717ef ILT |
885 | this->in_group_ = false; |
886 | } | |
887 | ||
ead1e424 | 888 | // Command_line options. |
bae7f79e | 889 | |
a5dc0706 | 890 | Command_line::Command_line() |
bae7f79e ILT |
891 | { |
892 | } | |
893 | ||
ee1fe73e ILT |
894 | // Process the command line options. For process_one_option, i is the |
895 | // index of argv to process next, and must be an option (that is, | |
896 | // start with a dash). The return value is the index of the next | |
897 | // option to process (i+1 or i+2, or argc to indicate processing is | |
898 | // done). no_more_options is set to true if (and when) "--" is seen | |
899 | // as an option. | |
bae7f79e | 900 | |
a0451b38 | 901 | int |
ee1fe73e | 902 | Command_line::process_one_option(int argc, const char** argv, int i, |
a0451b38 | 903 | bool* no_more_options) |
bae7f79e | 904 | { |
ee1fe73e | 905 | gold_assert(argv[i][0] == '-' && !(*no_more_options)); |
a0451b38 | 906 | |
ee1fe73e ILT |
907 | // If we are reading "--", then just set no_more_options and return. |
908 | if (argv[i][1] == '-' && argv[i][2] == '\0') | |
bae7f79e | 909 | { |
ee1fe73e | 910 | *no_more_options = true; |
a0451b38 ILT |
911 | return i + 1; |
912 | } | |
bae7f79e | 913 | |
ee1fe73e ILT |
914 | int new_i = i; |
915 | options::One_option* option = NULL; | |
916 | const char* arg = NULL; | |
bae7f79e | 917 | |
ee1fe73e ILT |
918 | // First, try to process argv as a long option. |
919 | option = parse_long_option(argc, argv, false, &arg, &new_i); | |
920 | if (option) | |
a0451b38 | 921 | { |
ee1fe73e ILT |
922 | option->reader->parse_to_value(argv[i], arg, this, &this->options_); |
923 | return new_i; | |
a0451b38 | 924 | } |
bae7f79e | 925 | |
ee1fe73e ILT |
926 | // Now, try to process argv as a short option. Since several short |
927 | // options can be combined in one argv, we may have to parse a lot | |
928 | // until we're done reading this argv. | |
929 | int pos_in_argv_i = 1; | |
930 | while (new_i == i) | |
a0451b38 | 931 | { |
ee1fe73e ILT |
932 | option = parse_short_option(argc, argv, pos_in_argv_i, &arg, &new_i); |
933 | if (!option) | |
934 | break; | |
935 | option->reader->parse_to_value(argv[i], arg, this, &this->options_); | |
936 | ++pos_in_argv_i; | |
a0451b38 | 937 | } |
ee1fe73e ILT |
938 | if (option) |
939 | return new_i; | |
a0451b38 | 940 | |
ee1fe73e ILT |
941 | // I guess it's neither a long option nor a short option. |
942 | usage(_("unknown option"), argv[i]); | |
943 | return argc; | |
a0451b38 | 944 | } |
bae7f79e | 945 | |
bae7f79e | 946 | |
a0451b38 | 947 | void |
ee1fe73e | 948 | Command_line::process(int argc, const char** argv) |
a0451b38 ILT |
949 | { |
950 | bool no_more_options = false; | |
951 | int i = 0; | |
952 | while (i < argc) | |
ead1e424 | 953 | { |
ee1fe73e ILT |
954 | this->position_options_.copy_from_options(this->options()); |
955 | if (no_more_options || argv[i][0] != '-') | |
956 | { | |
957 | Input_file_argument file(argv[i], false, "", false, | |
958 | this->position_options_); | |
959 | this->inputs_.add_file(file); | |
960 | ++i; | |
961 | } | |
bae7f79e | 962 | else |
ee1fe73e | 963 | i = process_one_option(argc, argv, i, &no_more_options); |
bae7f79e | 964 | } |
bae7f79e | 965 | |
dbe717ef | 966 | if (this->inputs_.in_group()) |
ee1fe73e ILT |
967 | { |
968 | fprintf(stderr, _("%s: missing group end\n"), program_name); | |
969 | usage(); | |
970 | } | |
bae7f79e | 971 | |
ee1fe73e ILT |
972 | // Normalize the options and ensure they don't contradict each other. |
973 | this->options_.finalize(); | |
bae7f79e | 974 | } |
61ba1cf9 ILT |
975 | |
976 | } // End namespace gold. |