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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> |
bae7f79e | 26 | #include <iostream> |
ad2d6943 ILT |
27 | #include <sys/stat.h> |
28 | #include "filenames.h" | |
29 | #include "libiberty.h" | |
bae7f79e | 30 | |
c7912668 | 31 | #include "debug.h" |
e5756efb | 32 | #include "script.h" |
0daa6f62 | 33 | #include "target-select.h" |
bae7f79e ILT |
34 | #include "options.h" |
35 | ||
61ba1cf9 ILT |
36 | namespace gold |
37 | { | |
38 | ||
bae7f79e ILT |
39 | // The information we keep for a single command line option. |
40 | ||
61ba1cf9 | 41 | struct options::One_option |
bae7f79e ILT |
42 | { |
43 | // The single character option name, or '\0' if this is only a long | |
44 | // option. | |
45 | char short_option; | |
46 | ||
47 | // The long option name, or NULL if this is only a short option. | |
48 | const char* long_option; | |
49 | ||
50 | // Description of the option for --help output, or NULL if there is none. | |
51 | const char* doc; | |
52 | ||
53 | // How to print the option name in --help output, or NULL to use the | |
54 | // default. | |
55 | const char* help_output; | |
56 | ||
57 | // Long option dash control. This is ignored if long_option is | |
58 | // NULL. | |
59 | enum | |
60 | { | |
61 | // Long option normally takes one dash; two dashes are also | |
62 | // accepted. | |
63 | ONE_DASH, | |
64 | // Long option normally takes two dashes; one dash is also | |
65 | // accepted. | |
66 | TWO_DASHES, | |
67 | // Long option always takes two dashes. | |
68 | EXACTLY_TWO_DASHES | |
69 | } dash; | |
70 | ||
71 | // Function for special handling, or NULL. Returns the number of | |
72 | // arguments to skip. This will normally be at least 1, but it may | |
73 | // be 0 if this function changes *argv. ARG points to the location | |
74 | // in *ARGV where the option starts, which may be helpful for a | |
75 | // short option. | |
3c2fafa5 ILT |
76 | int (*special)(int argc, char** argv, char *arg, bool long_option, |
77 | Command_line*); | |
bae7f79e ILT |
78 | |
79 | // If this is a position independent option which does not take an | |
45aa233b ILT |
80 | // argument, this is the member function to call to record it. (In |
81 | // this file, the bool will always be 'true' to indicate the option | |
82 | // is set.) | |
83 | void (General_options::*general_noarg)(bool); | |
bae7f79e ILT |
84 | |
85 | // If this is a position independent function which takes an | |
86 | // argument, this is the member function to call to record it. | |
61ba1cf9 | 87 | void (General_options::*general_arg)(const char*); |
bae7f79e ILT |
88 | |
89 | // If this is a position dependent option which does not take an | |
45aa233b ILT |
90 | // argument, this is the member function to call to record it. (In |
91 | // this file, the bool will always be 'true' to indicate the option | |
92 | // is set.) | |
93 | void (Position_dependent_options::*dependent_noarg)(bool); | |
bae7f79e ILT |
94 | |
95 | // If this is a position dependent option which takes an argument, | |
96 | // this is the member function to record it. | |
61ba1cf9 | 97 | void (Position_dependent_options::*dependent_arg)(const char*); |
bae7f79e ILT |
98 | |
99 | // Return whether this option takes an argument. | |
100 | bool | |
101 | takes_argument() const | |
102 | { return this->general_arg != NULL || this->dependent_arg != NULL; } | |
103 | }; | |
104 | ||
35cdfc9a ILT |
105 | // We have a separate table for -z options. |
106 | ||
107 | struct options::One_z_option | |
108 | { | |
109 | // The name of the option. | |
110 | const char* name; | |
111 | ||
cd72c291 ILT |
112 | // The member function in General_options called to record an option |
113 | // which does not take an argument. | |
114 | void (General_options::*set_noarg)(bool); | |
115 | ||
116 | // The member function in General_options called to record an option | |
117 | // which does take an argument. | |
118 | void (General_options::*set_arg)(const char*); | |
35cdfc9a ILT |
119 | }; |
120 | ||
c7912668 ILT |
121 | // We have a separate table for --debug options. |
122 | ||
123 | struct options::One_debug_option | |
124 | { | |
125 | // The name of the option. | |
126 | const char* name; | |
127 | ||
128 | // The flags to turn on. | |
129 | unsigned int debug_flags; | |
130 | }; | |
131 | ||
61ba1cf9 | 132 | class options::Command_line_options |
bae7f79e ILT |
133 | { |
134 | public: | |
135 | static const One_option options[]; | |
136 | static const int options_size; | |
35cdfc9a ILT |
137 | static const One_z_option z_options[]; |
138 | static const int z_options_size; | |
c7912668 ILT |
139 | static const One_debug_option debug_options[]; |
140 | static const int debug_options_size; | |
bae7f79e ILT |
141 | }; |
142 | ||
61ba1cf9 ILT |
143 | } // End namespace gold. |
144 | ||
bae7f79e ILT |
145 | namespace |
146 | { | |
147 | ||
bc644c6c ILT |
148 | // Recognize input and output target names. The GNU linker accepts |
149 | // these with --format and --oformat. This code is intended to be | |
150 | // minimally compatible. In practice for an ELF target this would be | |
151 | // the same target as the input files; that name always start with | |
152 | // "elf". Non-ELF targets would be "srec", "symbolsrec", "tekhex", | |
0daa6f62 ILT |
153 | // "binary", "ihex". See also |
154 | // General_options::default_target_settings. | |
bc644c6c ILT |
155 | |
156 | gold::General_options::Object_format | |
157 | string_to_object_format(const char* arg) | |
158 | { | |
159 | if (strncmp(arg, "elf", 3) == 0) | |
160 | return gold::General_options::OBJECT_FORMAT_ELF; | |
161 | else if (strcmp(arg, "binary") == 0) | |
162 | return gold::General_options::OBJECT_FORMAT_BINARY; | |
163 | else | |
164 | { | |
165 | gold::gold_error(_("format '%s' not supported " | |
166 | "(supported formats: elf, binary)"), | |
167 | arg); | |
168 | return gold::General_options::OBJECT_FORMAT_ELF; | |
169 | } | |
170 | } | |
171 | ||
61ba1cf9 ILT |
172 | // Handle the special -l option, which adds an input file. |
173 | ||
174 | int | |
3c2fafa5 ILT |
175 | library(int argc, char** argv, char* arg, bool long_option, |
176 | gold::Command_line* cmdline) | |
61ba1cf9 | 177 | { |
3c2fafa5 ILT |
178 | return cmdline->process_l_option(argc, argv, arg, long_option); |
179 | } | |
180 | ||
88dd47ac ILT |
181 | // Handle the -R option. Historically the GNU linker made -R a |
182 | // synonym for --just-symbols. ELF linkers have traditionally made -R | |
183 | // a synonym for -rpath. When ELF support was added to the GNU | |
184 | // linker, -R was changed to switch based on the argument: if the | |
185 | // argument is an ordinary file, we treat it as --just-symbols, | |
186 | // otherwise we treat it as -rpath. We need to be compatible with | |
187 | // this, because existing build scripts rely on it. | |
188 | ||
189 | int | |
190 | handle_r_option(int argc, char** argv, char* arg, bool long_option, | |
191 | gold::Command_line* cmdline) | |
192 | { | |
193 | int ret; | |
194 | const char* val = cmdline->get_special_argument("R", argc, argv, arg, | |
195 | long_option, &ret); | |
196 | struct stat s; | |
197 | if (::stat(val, &s) != 0 || S_ISDIR(s.st_mode)) | |
198 | cmdline->add_to_rpath(val); | |
199 | else | |
200 | cmdline->add_just_symbols_file(val); | |
201 | return ret; | |
202 | } | |
203 | ||
204 | // Handle the --just-symbols option. | |
205 | ||
206 | int | |
207 | handle_just_symbols_option(int argc, char** argv, char* arg, | |
208 | bool long_option, gold::Command_line* cmdline) | |
209 | { | |
210 | int ret; | |
211 | const char* val = cmdline->get_special_argument("just-symbols", argc, argv, | |
212 | arg, long_option, &ret); | |
213 | cmdline->add_just_symbols_file(val); | |
214 | return ret; | |
215 | } | |
216 | ||
3c2fafa5 ILT |
217 | // Handle the special -T/--script option, which reads a linker script. |
218 | ||
219 | int | |
220 | invoke_script(int argc, char** argv, char* arg, bool long_option, | |
221 | gold::Command_line* cmdline) | |
222 | { | |
223 | int ret; | |
224 | const char* script_name = cmdline->get_special_argument("script", argc, argv, | |
225 | arg, long_option, | |
226 | &ret); | |
227 | if (!read_commandline_script(script_name, cmdline)) | |
09124467 ILT |
228 | gold::gold_fatal(_("unable to parse script file %s"), script_name); |
229 | return ret; | |
230 | } | |
231 | ||
232 | // Handle the special --version-script option, which reads a version script. | |
233 | ||
234 | int | |
235 | invoke_version_script(int argc, char** argv, char* arg, bool long_option, | |
236 | gold::Command_line* cmdline) | |
237 | { | |
238 | int ret; | |
239 | const char* script_name = cmdline->get_special_argument("version-script", | |
240 | argc, argv, | |
241 | arg, long_option, | |
242 | &ret); | |
243 | if (!read_version_script(script_name, cmdline)) | |
244 | gold::gold_fatal(_("unable to parse version script file %s"), script_name); | |
3c2fafa5 | 245 | return ret; |
61ba1cf9 ILT |
246 | } |
247 | ||
ead1e424 ILT |
248 | // Handle the special --start-group option. |
249 | ||
250 | int | |
3c2fafa5 | 251 | start_group(int, char**, char* arg, bool, gold::Command_line* cmdline) |
ead1e424 ILT |
252 | { |
253 | cmdline->start_group(arg); | |
254 | return 1; | |
255 | } | |
256 | ||
257 | // Handle the special --end-group option. | |
258 | ||
259 | int | |
3c2fafa5 | 260 | end_group(int, char**, char* arg, bool, gold::Command_line* cmdline) |
ead1e424 ILT |
261 | { |
262 | cmdline->end_group(arg); | |
263 | return 1; | |
264 | } | |
265 | ||
bae7f79e ILT |
266 | // Report usage information for ld --help, and exit. |
267 | ||
268 | int | |
3c2fafa5 | 269 | help(int, char**, char*, bool, gold::Command_line*) |
bae7f79e ILT |
270 | { |
271 | printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name); | |
272 | ||
273 | const int options_size = gold::options::Command_line_options::options_size; | |
274 | const gold::options::One_option* options = | |
275 | gold::options::Command_line_options::options; | |
276 | for (int i = 0; i < options_size; ++i) | |
277 | { | |
278 | if (options[i].doc == NULL) | |
279 | continue; | |
280 | ||
281 | printf(" "); | |
282 | int len = 2; | |
283 | bool comma = false; | |
284 | ||
285 | int j = i; | |
286 | do | |
287 | { | |
288 | if (options[j].help_output != NULL) | |
289 | { | |
290 | if (comma) | |
291 | { | |
292 | printf(", "); | |
293 | len += 2; | |
294 | } | |
295 | printf(options[j].help_output); | |
88dd47ac | 296 | len += std::strlen(options[j].help_output); |
a6badf5a | 297 | comma = true; |
bae7f79e ILT |
298 | } |
299 | else | |
300 | { | |
301 | if (options[j].short_option != '\0') | |
302 | { | |
303 | if (comma) | |
304 | { | |
305 | printf(", "); | |
306 | len += 2; | |
307 | } | |
308 | printf("-%c", options[j].short_option); | |
309 | len += 2; | |
a6badf5a | 310 | comma = true; |
bae7f79e ILT |
311 | } |
312 | ||
313 | if (options[j].long_option != NULL) | |
314 | { | |
315 | if (comma) | |
316 | { | |
317 | printf(", "); | |
318 | len += 2; | |
319 | } | |
320 | if (options[j].dash == gold::options::One_option::ONE_DASH) | |
321 | { | |
322 | printf("-"); | |
323 | ++len; | |
324 | } | |
325 | else | |
326 | { | |
327 | printf("--"); | |
328 | len += 2; | |
329 | } | |
330 | printf("%s", options[j].long_option); | |
331 | len += std::strlen(options[j].long_option); | |
a6badf5a | 332 | comma = true; |
bae7f79e ILT |
333 | } |
334 | } | |
335 | ++j; | |
336 | } | |
337 | while (j < options_size && options[j].doc == NULL); | |
338 | ||
a6badf5a | 339 | if (len >= 30) |
bae7f79e ILT |
340 | { |
341 | printf("\n"); | |
342 | len = 0; | |
343 | } | |
344 | for (; len < 30; ++len) | |
345 | std::putchar(' '); | |
346 | ||
347 | std::puts(options[i].doc); | |
348 | } | |
349 | ||
c7912668 | 350 | ::exit(EXIT_SUCCESS); |
bae7f79e ILT |
351 | |
352 | return 0; | |
353 | } | |
354 | ||
8486ee48 ILT |
355 | // Report version information. |
356 | ||
357 | int | |
3c2fafa5 | 358 | version(int, char**, char* opt, bool, gold::Command_line*) |
8486ee48 ILT |
359 | { |
360 | gold::print_version(opt[0] == 'v' && opt[1] == '\0'); | |
c7912668 | 361 | ::exit(EXIT_SUCCESS); |
8486ee48 ILT |
362 | return 0; |
363 | } | |
364 | ||
ad2d6943 ILT |
365 | // If the default sysroot is relocatable, try relocating it based on |
366 | // the prefix FROM. | |
367 | ||
368 | char* | |
369 | get_relative_sysroot(const char* from) | |
370 | { | |
371 | char* path = make_relative_prefix(gold::program_name, from, | |
372 | TARGET_SYSTEM_ROOT); | |
373 | if (path != NULL) | |
374 | { | |
375 | struct stat s; | |
376 | if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode)) | |
377 | return path; | |
378 | free(path); | |
379 | } | |
380 | ||
381 | return NULL; | |
382 | } | |
383 | ||
384 | // Return the default sysroot. This is set by the --with-sysroot | |
385 | // option to configure. | |
386 | ||
387 | std::string | |
388 | get_default_sysroot() | |
389 | { | |
390 | const char* sysroot = TARGET_SYSTEM_ROOT; | |
391 | if (*sysroot == '\0') | |
392 | return ""; | |
393 | ||
394 | if (TARGET_SYSTEM_ROOT_RELOCATABLE) | |
395 | { | |
396 | char* path = get_relative_sysroot (BINDIR); | |
397 | if (path == NULL) | |
398 | path = get_relative_sysroot (TOOLBINDIR); | |
399 | if (path != NULL) | |
400 | { | |
401 | std::string ret = path; | |
402 | free(path); | |
403 | return ret; | |
404 | } | |
405 | } | |
406 | ||
407 | return sysroot; | |
408 | } | |
409 | ||
61ba1cf9 ILT |
410 | } // End anonymous namespace. |
411 | ||
412 | namespace gold | |
413 | { | |
bae7f79e ILT |
414 | |
415 | // Helper macros used to specify the options. We could also do this | |
416 | // using constructors, but then g++ would generate code to initialize | |
417 | // the array. We want the array to be initialized statically so that | |
418 | // we get better startup time. | |
419 | ||
420 | #define GENERAL_NOARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 421 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
422 | NULL, func, NULL, NULL, NULL } |
423 | #define GENERAL_ARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 424 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
425 | NULL, NULL, func, NULL, NULL } |
426 | #define POSDEP_NOARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 427 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
428 | NULL, NULL, NULL, func, NULL } |
429 | #define POSDEP_ARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 430 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
431 | NULL, NULL, NULL, NULL, func } |
432 | #define SPECIAL(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 433 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
434 | func, NULL, NULL, NULL, NULL } |
435 | ||
436 | // Here is the actual list of options which we accept. | |
437 | ||
61ba1cf9 ILT |
438 | const options::One_option |
439 | options::Command_line_options::options[] = | |
bae7f79e | 440 | { |
e2827e5f ILT |
441 | GENERAL_NOARG('\0', "allow-shlib-undefined", |
442 | N_("Allow unresolved references in shared libraries"), | |
443 | NULL, TWO_DASHES, | |
444 | &General_options::set_allow_shlib_undefined), | |
445 | GENERAL_NOARG('\0', "no-allow-shlib-undefined", | |
446 | N_("Do not allow unresolved references in shared libraries"), | |
447 | NULL, TWO_DASHES, | |
448 | &General_options::set_no_allow_shlib_undefined), | |
0c5e9c22 ILT |
449 | POSDEP_NOARG('\0', "as-needed", |
450 | N_("Only set DT_NEEDED for dynamic libs if used"), | |
451 | NULL, TWO_DASHES, &Position_dependent_options::set_as_needed), | |
452 | POSDEP_NOARG('\0', "no-as-needed", | |
453 | N_("Always DT_NEEDED for dynamic libs (default)"), | |
45aa233b | 454 | NULL, TWO_DASHES, &Position_dependent_options::set_no_as_needed), |
61611222 ILT |
455 | POSDEP_NOARG('\0', "Bdynamic", |
456 | N_("-l searches for shared libraries"), | |
457 | NULL, ONE_DASH, | |
45aa233b | 458 | &Position_dependent_options::set_Bdynamic), |
61611222 ILT |
459 | POSDEP_NOARG('\0', "Bstatic", |
460 | N_("-l does not search for shared libraries"), | |
461 | NULL, ONE_DASH, | |
45aa233b | 462 | &Position_dependent_options::set_Bstatic), |
51b08ebe | 463 | GENERAL_NOARG('\0', "Bsymbolic", N_("Bind defined symbols locally"), |
45aa233b | 464 | NULL, ONE_DASH, &General_options::set_Bsymbolic), |
bc644c6c ILT |
465 | POSDEP_ARG('b', "format", N_("Set input format (elf, binary)"), |
466 | N_("-b FORMAT, --format FORMAT"), TWO_DASHES, | |
45aa233b | 467 | &Position_dependent_options::set_format), |
9a0910c3 ILT |
468 | #ifdef HAVE_ZLIB_H |
469 | # define ZLIB_STR ",zlib" | |
470 | #else | |
471 | # define ZLIB_STR "" | |
472 | #endif | |
473 | GENERAL_ARG('\0', "compress-debug-sections", | |
474 | N_("Compress .debug_* sections in the output file " | |
475 | "(default is none)"), | |
476 | N_("--compress-debug-sections=[none" ZLIB_STR "]"), | |
477 | TWO_DASHES, | |
bc2c67ff | 478 | &General_options::set_compress_debug_sections), |
e5756efb ILT |
479 | GENERAL_ARG('\0', "defsym", N_("Define a symbol"), |
480 | N_("--defsym SYMBOL=EXPRESSION"), TWO_DASHES, | |
45aa233b | 481 | &General_options::add_to_defsym), |
a2b1aa12 ILT |
482 | GENERAL_NOARG('\0', "demangle", N_("Demangle C++ symbols in log messages"), |
483 | NULL, TWO_DASHES, &General_options::set_demangle), | |
484 | GENERAL_NOARG('\0', "no-demangle", | |
485 | N_("Do not demangle C++ symbols in log messages"), | |
45aa233b | 486 | NULL, TWO_DASHES, &General_options::set_no_demangle), |
a55ce7fe ILT |
487 | GENERAL_NOARG('\0', "detect-odr-violations", |
488 | N_("Try to detect violations of the One Definition Rule"), | |
489 | NULL, TWO_DASHES, &General_options::set_detect_odr_violations), | |
d391083d ILT |
490 | GENERAL_ARG('e', "entry", N_("Set program start address"), |
491 | N_("-e ADDRESS, --entry ADDRESS"), TWO_DASHES, | |
492 | &General_options::set_entry), | |
a6badf5a ILT |
493 | GENERAL_NOARG('E', "export-dynamic", N_("Export all dynamic symbols"), |
494 | NULL, TWO_DASHES, &General_options::set_export_dynamic), | |
0c5e9c22 | 495 | GENERAL_NOARG('\0', "eh-frame-hdr", N_("Create exception frame header"), |
45aa233b | 496 | NULL, TWO_DASHES, &General_options::set_eh_frame_hdr), |
fced7afd | 497 | GENERAL_ARG('h', "soname", N_("Set shared library name"), |
d391083d | 498 | N_("-h FILENAME, -soname FILENAME"), ONE_DASH, |
fced7afd | 499 | &General_options::set_soname), |
dbe717ef ILT |
500 | GENERAL_ARG('I', "dynamic-linker", N_("Set dynamic linker path"), |
501 | N_("-I PROGRAM, --dynamic-linker PROGRAM"), TWO_DASHES, | |
502 | &General_options::set_dynamic_linker), | |
0c5e9c22 ILT |
503 | SPECIAL('l', "library", N_("Search for library LIBNAME"), |
504 | N_("-lLIBNAME, --library LIBNAME"), TWO_DASHES, | |
505 | &library), | |
bae7f79e ILT |
506 | GENERAL_ARG('L', "library-path", N_("Add directory to search path"), |
507 | N_("-L DIR, --library-path DIR"), TWO_DASHES, | |
61ba1cf9 | 508 | &General_options::add_to_search_path), |
652ec9bd ILT |
509 | GENERAL_ARG('m', NULL, N_("Ignored for compatibility"), NULL, ONE_DASH, |
510 | &General_options::ignore), | |
61ba1cf9 ILT |
511 | GENERAL_ARG('o', "output", N_("Set output file name"), |
512 | N_("-o FILE, --output FILE"), TWO_DASHES, | |
45aa233b ILT |
513 | &General_options::set_output), |
514 | GENERAL_ARG('O', "optimize", N_("Optimize output file size"), | |
0c5e9c22 | 515 | N_("-O level"), ONE_DASH, |
45aa233b | 516 | &General_options::set_optimize), |
516cb3d0 ILT |
517 | GENERAL_ARG('\0', "oformat", N_("Set output format (only binary supported)"), |
518 | N_("--oformat FORMAT"), EXACTLY_TWO_DASHES, | |
45aa233b ILT |
519 | &General_options::set_oformat), |
520 | GENERAL_NOARG('r', "relocatable", N_("Generate relocatable output"), NULL, | |
61ba1cf9 | 521 | ONE_DASH, &General_options::set_relocatable), |
88dd47ac ILT |
522 | // -R really means -rpath, but can mean --just-symbols for |
523 | // compatibility with GNU ld. -rpath is always -rpath, so we list | |
524 | // it separately. | |
525 | SPECIAL('R', NULL, N_("Add DIR to runtime search path"), | |
526 | N_("-R DIR"), ONE_DASH, &handle_r_option), | |
527 | GENERAL_ARG('\0', "rpath", NULL, N_("-rpath DIR"), ONE_DASH, | |
528 | &General_options::add_to_rpath), | |
529 | SPECIAL('\0', "just-symbols", N_("Read only symbol values from file"), | |
530 | N_("-R FILE, --just-symbols FILE"), TWO_DASHES, | |
531 | &handle_just_symbols_option), | |
15b3cfae ILT |
532 | GENERAL_ARG('\0', "rpath-link", |
533 | N_("Add DIR to link time shared library search path"), | |
534 | N_("--rpath-link DIR"), TWO_DASHES, | |
535 | &General_options::add_to_rpath_link), | |
0c5e9c22 ILT |
536 | GENERAL_NOARG('s', "strip-all", N_("Strip all symbols"), NULL, |
537 | TWO_DASHES, &General_options::set_strip_all), | |
02d2ba74 ILT |
538 | GENERAL_NOARG('\0', "strip-debug-gdb", |
539 | N_("Strip debug symbols that are unused by gdb " | |
540 | "(at least versions <= 6.7)"), | |
541 | NULL, TWO_DASHES, &General_options::set_strip_debug_gdb), | |
542 | // This must come after -Sdebug since it's a prefix of it. | |
0c5e9c22 ILT |
543 | GENERAL_NOARG('S', "strip-debug", N_("Strip debugging information"), NULL, |
544 | TWO_DASHES, &General_options::set_strip_debug), | |
92e059d8 ILT |
545 | GENERAL_NOARG('\0', "shared", N_("Generate shared library"), |
546 | NULL, ONE_DASH, &General_options::set_shared), | |
bae7f79e | 547 | GENERAL_NOARG('\0', "static", N_("Do not link against shared libraries"), |
61ba1cf9 | 548 | NULL, ONE_DASH, &General_options::set_static), |
e44fcf3b ILT |
549 | GENERAL_NOARG('\0', "stats", N_("Print resource usage statistics"), |
550 | NULL, TWO_DASHES, &General_options::set_stats), | |
ad2d6943 ILT |
551 | GENERAL_ARG('\0', "sysroot", N_("Set target system root directory"), |
552 | N_("--sysroot DIR"), TWO_DASHES, &General_options::set_sysroot), | |
756ac4a8 ILT |
553 | GENERAL_ARG('\0', "Tbss", N_("Set the address of the bss segment"), |
554 | N_("-Tbss ADDRESS"), ONE_DASH, | |
45aa233b | 555 | &General_options::set_Tbss), |
756ac4a8 ILT |
556 | GENERAL_ARG('\0', "Tdata", N_("Set the address of the data segment"), |
557 | N_("-Tdata ADDRESS"), ONE_DASH, | |
45aa233b | 558 | &General_options::set_Tdata), |
756ac4a8 | 559 | GENERAL_ARG('\0', "Ttext", N_("Set the address of the text segment"), |
0c5e9c22 | 560 | N_("-Ttext ADDRESS"), ONE_DASH, |
45aa233b | 561 | &General_options::set_Ttext), |
756ac4a8 ILT |
562 | // This must come after -Ttext and friends since it's a prefix of |
563 | // them. | |
a0451b38 ILT |
564 | SPECIAL('T', "script", N_("Read linker script"), |
565 | N_("-T FILE, --script FILE"), TWO_DASHES, | |
566 | &invoke_script), | |
09124467 ILT |
567 | SPECIAL('\0', "version-script", N_("Read version script"), |
568 | N_("--version-script FILE"), TWO_DASHES, | |
569 | &invoke_version_script), | |
fe9a4c12 ILT |
570 | GENERAL_NOARG('\0', "threads", N_("Run the linker multi-threaded"), |
571 | NULL, TWO_DASHES, &General_options::set_threads), | |
572 | GENERAL_NOARG('\0', "no-threads", N_("Do not run the linker multi-threaded"), | |
45aa233b | 573 | NULL, TWO_DASHES, &General_options::set_no_threads), |
fe9a4c12 ILT |
574 | GENERAL_ARG('\0', "thread-count", N_("Number of threads to use"), |
575 | N_("--thread-count COUNT"), TWO_DASHES, | |
576 | &General_options::set_thread_count), | |
577 | GENERAL_ARG('\0', "thread-count-initial", | |
578 | N_("Number of threads to use in initial pass"), | |
579 | N_("--thread-count-initial COUNT"), TWO_DASHES, | |
580 | &General_options::set_thread_count_initial), | |
581 | GENERAL_ARG('\0', "thread-count-middle", | |
582 | N_("Number of threads to use in middle pass"), | |
583 | N_("--thread-count-middle COUNT"), TWO_DASHES, | |
584 | &General_options::set_thread_count_middle), | |
585 | GENERAL_ARG('\0', "thread-count-final", | |
586 | N_("Number of threads to use in final pass"), | |
587 | N_("--thread-count-final COUNT"), TWO_DASHES, | |
588 | &General_options::set_thread_count_final), | |
4973341a ILT |
589 | POSDEP_NOARG('\0', "whole-archive", |
590 | N_("Include all archive contents"), | |
591 | NULL, TWO_DASHES, | |
592 | &Position_dependent_options::set_whole_archive), | |
593 | POSDEP_NOARG('\0', "no-whole-archive", | |
594 | N_("Include only needed archive contents"), | |
595 | NULL, TWO_DASHES, | |
45aa233b | 596 | &Position_dependent_options::set_no_whole_archive), |
35cdfc9a ILT |
597 | |
598 | GENERAL_ARG('z', NULL, | |
599 | N_("Subcommands as follows:\n\ | |
600 | -z execstack Mark output as requiring executable stack\n\ | |
cd72c291 ILT |
601 | -z noexecstack Mark output as not requiring executable stack\n\ |
602 | -z max-page-size=SIZE Set maximum page size to SIZE\n\ | |
603 | -z common-page-size=SIZE Set common page size to SIZE"), | |
35cdfc9a ILT |
604 | N_("-z SUBCOMMAND"), ONE_DASH, |
605 | &General_options::handle_z_option), | |
606 | ||
0c5e9c22 ILT |
607 | SPECIAL('(', "start-group", N_("Start a library search group"), NULL, |
608 | TWO_DASHES, &start_group), | |
609 | SPECIAL(')', "end-group", N_("End a library search group"), NULL, | |
610 | TWO_DASHES, &end_group), | |
bae7f79e | 611 | SPECIAL('\0', "help", N_("Report usage information"), NULL, |
8486ee48 ILT |
612 | TWO_DASHES, &help), |
613 | SPECIAL('v', "version", N_("Report version information"), NULL, | |
c7912668 | 614 | TWO_DASHES, &version), |
494e05f4 | 615 | GENERAL_ARG('\0', "debug", N_("Turn on debugging (all,task,script)"), |
c7912668 ILT |
616 | N_("--debug=TYPE"), TWO_DASHES, |
617 | &General_options::handle_debug_option) | |
bae7f79e ILT |
618 | }; |
619 | ||
61ba1cf9 | 620 | const int options::Command_line_options::options_size = |
bae7f79e ILT |
621 | sizeof (options) / sizeof (options[0]); |
622 | ||
35cdfc9a ILT |
623 | // The -z options. |
624 | ||
625 | const options::One_z_option | |
626 | options::Command_line_options::z_options[] = | |
627 | { | |
cd72c291 ILT |
628 | { "execstack", &General_options::set_execstack, NULL }, |
629 | { "noexecstack", &General_options::set_noexecstack, NULL }, | |
630 | { "max-page-size", NULL, &General_options::set_max_page_size }, | |
631 | { "common-page-size", NULL, &General_options::set_common_page_size } | |
35cdfc9a ILT |
632 | }; |
633 | ||
634 | const int options::Command_line_options::z_options_size = | |
635 | sizeof(z_options) / sizeof(z_options[0]); | |
636 | ||
c7912668 ILT |
637 | // The --debug options. |
638 | ||
639 | const options::One_debug_option | |
640 | options::Command_line_options::debug_options[] = | |
641 | { | |
642 | { "all", DEBUG_ALL }, | |
643 | { "task", DEBUG_TASK }, | |
494e05f4 | 644 | { "script", DEBUG_SCRIPT } |
c7912668 ILT |
645 | }; |
646 | ||
647 | const int options::Command_line_options::debug_options_size = | |
648 | sizeof(debug_options) / sizeof(debug_options[0]); | |
649 | ||
bae7f79e ILT |
650 | // The default values for the general options. |
651 | ||
e5756efb ILT |
652 | General_options::General_options(Script_options* script_options) |
653 | : export_dynamic_(false), | |
fced7afd | 654 | soname_(NULL), |
a6badf5a | 655 | dynamic_linker_(NULL), |
dbe717ef | 656 | search_path_(), |
ca3a67a5 | 657 | optimization_level_(0), |
61ba1cf9 | 658 | output_file_name_("a.out"), |
45aa233b ILT |
659 | oformat_(OBJECT_FORMAT_ELF), |
660 | oformat_string_(NULL), | |
61ba1cf9 | 661 | is_relocatable_(false), |
9e2dcb77 | 662 | strip_(STRIP_NONE), |
9a2d6984 | 663 | allow_shlib_undefined_(false), |
51b08ebe | 664 | symbolic_(false), |
9a0910c3 | 665 | compress_debug_sections_(NO_COMPRESSION), |
a55ce7fe | 666 | detect_odr_violations_(false), |
7da52175 | 667 | create_eh_frame_hdr_(false), |
4973341a | 668 | rpath_(), |
15b3cfae | 669 | rpath_link_(), |
92e059d8 | 670 | is_shared_(false), |
ad2d6943 | 671 | is_static_(false), |
e44fcf3b | 672 | print_stats_(false), |
0c5e9c22 | 673 | sysroot_(), |
756ac4a8 ILT |
674 | bss_segment_address_(-1U), // -1 indicates value not set by user |
675 | data_segment_address_(-1U), | |
676 | text_segment_address_(-1U), | |
fe9a4c12 ILT |
677 | threads_(false), |
678 | thread_count_initial_(0), | |
679 | thread_count_middle_(0), | |
35cdfc9a | 680 | thread_count_final_(0), |
c7912668 | 681 | execstack_(EXECSTACK_FROM_INPUT), |
cd72c291 ILT |
682 | max_page_size_(0), |
683 | common_page_size_(0), | |
e5756efb ILT |
684 | debug_(0), |
685 | script_options_(script_options) | |
bae7f79e | 686 | { |
a2b1aa12 ILT |
687 | // We initialize demangle_ based on the environment variable |
688 | // COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
689 | // output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
690 | // environment. Acting the same way here lets us provide the same | |
691 | // interface by default. | |
692 | this->demangle_ = getenv("COLLECT_NO_DEMANGLE") == NULL; | |
bae7f79e ILT |
693 | } |
694 | ||
e5756efb | 695 | // Handle the --defsym option. |
bae7f79e | 696 | |
e5756efb | 697 | void |
45aa233b | 698 | General_options::add_to_defsym(const char* arg) |
bae7f79e | 699 | { |
e5756efb | 700 | this->script_options_->define_symbol(arg); |
bae7f79e ILT |
701 | } |
702 | ||
bc644c6c | 703 | // Handle the --oformat option. |
516cb3d0 ILT |
704 | |
705 | void | |
45aa233b | 706 | General_options::set_oformat(const char* arg) |
516cb3d0 | 707 | { |
45aa233b ILT |
708 | this->oformat_string_ = arg; |
709 | this->oformat_ = string_to_object_format(arg); | |
516cb3d0 ILT |
710 | } |
711 | ||
0daa6f62 ILT |
712 | // The x86_64 kernel build converts a binary file to an object file |
713 | // using -r --format binary --oformat elf32-i386 foo.o. In order to | |
714 | // support that for gold we support determining the default target | |
715 | // choice from the output format. We recognize names that the GNU | |
716 | // linker uses. | |
717 | ||
718 | Target* | |
719 | General_options::default_target() const | |
720 | { | |
45aa233b | 721 | if (this->oformat_string_ != NULL) |
0daa6f62 | 722 | { |
45aa233b | 723 | Target* target = select_target_by_name(this->oformat_string_); |
0daa6f62 ILT |
724 | if (target != NULL) |
725 | return target; | |
726 | ||
727 | gold_error(_("unrecognized output format %s"), | |
45aa233b | 728 | this->oformat_string_); |
0daa6f62 ILT |
729 | } |
730 | ||
731 | // The GOLD_DEFAULT_xx macros are defined by the configure script. | |
732 | Target* target = select_target(elfcpp::GOLD_DEFAULT_MACHINE, | |
733 | GOLD_DEFAULT_SIZE, | |
734 | GOLD_DEFAULT_BIG_ENDIAN, | |
735 | 0, 0); | |
736 | gold_assert(target != NULL); | |
737 | return target; | |
738 | } | |
739 | ||
35cdfc9a ILT |
740 | // Handle the -z option. |
741 | ||
742 | void | |
743 | General_options::handle_z_option(const char* arg) | |
744 | { | |
cd72c291 ILT |
745 | // ARG may be a word, like "noexec", or it may be an option in its |
746 | // own right, like "max-page-size=SIZE". | |
747 | const char* argarg = strchr(arg, '='); // the argument to the -z argument | |
748 | int arglen; | |
749 | if (argarg) | |
750 | { | |
751 | arglen = argarg - arg; | |
752 | argarg++; | |
753 | } | |
754 | else | |
755 | arglen = strlen(arg); | |
756 | ||
35cdfc9a ILT |
757 | const int z_options_size = options::Command_line_options::z_options_size; |
758 | const gold::options::One_z_option* z_options = | |
759 | gold::options::Command_line_options::z_options; | |
760 | for (int i = 0; i < z_options_size; ++i) | |
761 | { | |
cd72c291 ILT |
762 | if (memcmp(arg, z_options[i].name, arglen) == 0 |
763 | && z_options[i].name[arglen] == '\0') | |
35cdfc9a | 764 | { |
cd72c291 ILT |
765 | if (z_options[i].set_noarg && argarg) |
766 | gold::gold_fatal(_("-z subcommand does not take an argument: %s\n"), | |
767 | z_options[i].name); | |
768 | else if (z_options[i].set_arg && !argarg) | |
769 | gold::gold_fatal(_("-z subcommand requires an argument: %s\n"), | |
770 | z_options[i].name); | |
771 | else if (z_options[i].set_arg) | |
772 | (this->*(z_options[i].set_arg))(argarg); | |
773 | else | |
774 | (this->*(z_options[i].set_noarg))(true); | |
775 | return; | |
776 | } | |
35cdfc9a ILT |
777 | } |
778 | ||
cd72c291 ILT |
779 | gold::gold_fatal(_("%s: unrecognized -z subcommand: %s\n"), |
780 | program_name, arg); | |
c7912668 ILT |
781 | } |
782 | ||
783 | // Handle the --debug option. | |
784 | ||
785 | void | |
786 | General_options::handle_debug_option(const char* arg) | |
787 | { | |
788 | const int debug_options_size = | |
789 | options::Command_line_options::debug_options_size; | |
790 | const gold::options::One_debug_option* debug_options = | |
791 | options::Command_line_options::debug_options; | |
792 | for (int i = 0; i < debug_options_size; ++i) | |
793 | { | |
794 | if (strcmp(arg, debug_options[i].name) == 0) | |
795 | { | |
796 | this->set_debug(debug_options[i].debug_flags); | |
797 | return; | |
798 | } | |
799 | } | |
800 | ||
801 | fprintf(stderr, _("%s: unrecognized --debug subcommand: %s\n"), | |
802 | program_name, arg); | |
803 | ::exit(EXIT_FAILURE); | |
35cdfc9a ILT |
804 | } |
805 | ||
ad2d6943 ILT |
806 | // Add the sysroot, if any, to the search paths. |
807 | ||
808 | void | |
809 | General_options::add_sysroot() | |
810 | { | |
811 | if (this->sysroot_.empty()) | |
812 | { | |
813 | this->sysroot_ = get_default_sysroot(); | |
814 | if (this->sysroot_.empty()) | |
815 | return; | |
816 | } | |
817 | ||
818 | const char* sysroot = this->sysroot_.c_str(); | |
819 | char* canonical_sysroot = lrealpath(sysroot); | |
820 | ||
821 | for (Dir_list::iterator p = this->search_path_.begin(); | |
822 | p != this->search_path_.end(); | |
823 | ++p) | |
824 | p->add_sysroot(sysroot, canonical_sysroot); | |
825 | ||
826 | free(canonical_sysroot); | |
827 | } | |
828 | ||
e5756efb ILT |
829 | // The default values for the position dependent options. |
830 | ||
831 | Position_dependent_options::Position_dependent_options() | |
832 | : do_static_search_(false), | |
833 | as_needed_(false), | |
bc644c6c ILT |
834 | include_whole_archive_(false), |
835 | input_format_(General_options::OBJECT_FORMAT_ELF) | |
836 | { | |
837 | } | |
838 | ||
839 | // Set the input format. | |
840 | ||
841 | void | |
45aa233b | 842 | Position_dependent_options::set_format(const char* arg) |
e5756efb | 843 | { |
bc644c6c | 844 | this->input_format_ = string_to_object_format(arg); |
e5756efb ILT |
845 | } |
846 | ||
ad2d6943 ILT |
847 | // Search_directory methods. |
848 | ||
849 | // This is called if we have a sysroot. Apply the sysroot if | |
850 | // appropriate. Record whether the directory is in the sysroot. | |
851 | ||
852 | void | |
853 | Search_directory::add_sysroot(const char* sysroot, | |
854 | const char* canonical_sysroot) | |
855 | { | |
856 | gold_assert(*sysroot != '\0'); | |
857 | if (this->put_in_sysroot_) | |
858 | { | |
859 | if (!IS_DIR_SEPARATOR(this->name_[0]) | |
860 | && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1])) | |
861 | this->name_ = '/' + this->name_; | |
862 | this->name_ = sysroot + this->name_; | |
863 | this->is_in_sysroot_ = true; | |
864 | } | |
865 | else | |
866 | { | |
867 | // Check whether this entry is in the sysroot. To do this | |
868 | // correctly, we need to use canonical names. Otherwise we will | |
869 | // get confused by the ../../.. paths that gcc tends to use. | |
870 | char* canonical_name = lrealpath(this->name_.c_str()); | |
871 | int canonical_name_len = strlen(canonical_name); | |
872 | int canonical_sysroot_len = strlen(canonical_sysroot); | |
873 | if (canonical_name_len > canonical_sysroot_len | |
874 | && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len])) | |
875 | { | |
876 | canonical_name[canonical_sysroot_len] = '\0'; | |
877 | if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0) | |
878 | this->is_in_sysroot_ = true; | |
879 | } | |
880 | free(canonical_name); | |
881 | } | |
882 | } | |
883 | ||
dbe717ef ILT |
884 | // Input_arguments methods. |
885 | ||
886 | // Add a file to the list. | |
887 | ||
888 | void | |
889 | Input_arguments::add_file(const Input_file_argument& file) | |
890 | { | |
891 | if (!this->in_group_) | |
892 | this->input_argument_list_.push_back(Input_argument(file)); | |
893 | else | |
894 | { | |
a3ad94ed ILT |
895 | gold_assert(!this->input_argument_list_.empty()); |
896 | gold_assert(this->input_argument_list_.back().is_group()); | |
dbe717ef ILT |
897 | this->input_argument_list_.back().group()->add_file(file); |
898 | } | |
899 | } | |
900 | ||
901 | // Start a group. | |
902 | ||
903 | void | |
904 | Input_arguments::start_group() | |
905 | { | |
a3ad94ed | 906 | gold_assert(!this->in_group_); |
dbe717ef ILT |
907 | Input_file_group* group = new Input_file_group(); |
908 | this->input_argument_list_.push_back(Input_argument(group)); | |
909 | this->in_group_ = true; | |
910 | } | |
911 | ||
912 | // End a group. | |
913 | ||
914 | void | |
915 | Input_arguments::end_group() | |
916 | { | |
a3ad94ed | 917 | gold_assert(this->in_group_); |
dbe717ef ILT |
918 | this->in_group_ = false; |
919 | } | |
920 | ||
ead1e424 | 921 | // Command_line options. |
bae7f79e | 922 | |
e5756efb ILT |
923 | Command_line::Command_line(Script_options* script_options) |
924 | : options_(script_options), position_options_(), inputs_() | |
bae7f79e ILT |
925 | { |
926 | } | |
927 | ||
a0451b38 ILT |
928 | // Process the command line options. For process_one_option, |
929 | // i is the index of argv to process next, and the return value | |
930 | // is the index of the next option to process (i+1 or i+2, or argc | |
931 | // to indicate processing is done). no_more_options is set to true | |
932 | // if (and when) "--" is seen as an option. | |
bae7f79e | 933 | |
a0451b38 ILT |
934 | int |
935 | Command_line::process_one_option(int argc, char** argv, int i, | |
936 | bool* no_more_options) | |
bae7f79e | 937 | { |
61ba1cf9 | 938 | const int options_size = options::Command_line_options::options_size; |
a0451b38 ILT |
939 | const options::One_option* options = options::Command_line_options::options; |
940 | gold_assert(i < argc); | |
941 | ||
942 | if (argv[i][0] != '-' || *no_more_options) | |
bae7f79e | 943 | { |
a0451b38 ILT |
944 | this->add_file(argv[i], false); |
945 | return i + 1; | |
946 | } | |
bae7f79e | 947 | |
a0451b38 ILT |
948 | // Option starting with '-'. |
949 | int dashes = 1; | |
950 | if (argv[i][1] == '-') | |
951 | { | |
952 | dashes = 2; | |
953 | if (argv[i][2] == '\0') | |
954 | { | |
955 | *no_more_options = true; | |
956 | return i + 1; | |
957 | } | |
958 | } | |
bae7f79e | 959 | |
a0451b38 ILT |
960 | // Look for a long option match. |
961 | char* opt = argv[i] + dashes; | |
962 | char first = opt[0]; | |
963 | int skiparg = 0; | |
964 | char* arg = strchr(opt, '='); | |
965 | bool argument_with_equals = arg != NULL; | |
966 | if (arg != NULL) | |
967 | { | |
968 | *arg = '\0'; | |
969 | ++arg; | |
970 | } | |
971 | else if (i + 1 < argc) | |
972 | { | |
973 | arg = argv[i + 1]; | |
974 | skiparg = 1; | |
975 | } | |
bae7f79e | 976 | |
a0451b38 ILT |
977 | int j; |
978 | for (j = 0; j < options_size; ++j) | |
979 | { | |
980 | if (options[j].long_option != NULL | |
981 | && (dashes == 2 | |
516cb3d0 ILT |
982 | || (options[j].dash |
983 | != options::One_option::EXACTLY_TWO_DASHES)) | |
a0451b38 ILT |
984 | && first == options[j].long_option[0] |
985 | && strcmp(opt, options[j].long_option) == 0) | |
986 | { | |
987 | if (options[j].special) | |
988 | { | |
989 | // Restore the '=' we clobbered above. | |
990 | if (arg != NULL && skiparg == 0) | |
991 | arg[-1] = '='; | |
992 | i += options[j].special(argc - i, argv + i, opt, true, this); | |
993 | } | |
994 | else | |
995 | { | |
996 | if (!options[j].takes_argument()) | |
997 | { | |
998 | if (argument_with_equals) | |
999 | this->usage(_("unexpected argument"), argv[i]); | |
1000 | arg = NULL; | |
1001 | skiparg = 0; | |
1002 | } | |
1003 | else | |
1004 | { | |
1005 | if (arg == NULL) | |
1006 | this->usage(_("missing argument"), argv[i]); | |
1007 | } | |
1008 | this->apply_option(options[j], arg); | |
1009 | i += skiparg + 1; | |
1010 | } | |
1011 | break; | |
1012 | } | |
1013 | } | |
1014 | if (j < options_size) | |
1015 | return i; | |
1016 | ||
1017 | // If we saw two dashes, we needed to have seen a long option. | |
1018 | if (dashes == 2) | |
1019 | this->usage(_("unknown option"), argv[i]); | |
1020 | ||
1021 | // Look for a short option match. There may be more than one | |
1022 | // short option in a given argument. | |
1023 | bool done = false; | |
1024 | char* s = argv[i] + 1; | |
1025 | ++i; | |
1026 | while (*s != '\0' && !done) | |
1027 | { | |
1028 | char opt = *s; | |
bae7f79e ILT |
1029 | int j; |
1030 | for (j = 0; j < options_size; ++j) | |
a0451b38 ILT |
1031 | { |
1032 | if (options[j].short_option == opt) | |
1033 | { | |
1034 | if (options[j].special) | |
1035 | { | |
1036 | // Undo the argument skip done above. | |
1037 | --i; | |
1038 | i += options[j].special(argc - i, argv + i, s, false, | |
1039 | this); | |
1040 | done = true; | |
1041 | } | |
1042 | else | |
1043 | { | |
1044 | arg = NULL; | |
1045 | if (options[j].takes_argument()) | |
1046 | { | |
1047 | if (s[1] != '\0') | |
1048 | { | |
1049 | arg = s + 1; | |
1050 | done = true; | |
1051 | } | |
1052 | else if (i < argc) | |
1053 | { | |
1054 | arg = argv[i]; | |
1055 | ++i; | |
1056 | } | |
1057 | else | |
1058 | this->usage(_("missing argument"), opt); | |
1059 | } | |
1060 | this->apply_option(options[j], arg); | |
1061 | } | |
1062 | break; | |
1063 | } | |
1064 | } | |
1065 | ||
1066 | if (j >= options_size) | |
1067 | this->usage(_("unknown option"), *s); | |
1068 | ||
1069 | ++s; | |
1070 | } | |
1071 | return i; | |
1072 | } | |
bae7f79e | 1073 | |
bae7f79e | 1074 | |
a0451b38 ILT |
1075 | void |
1076 | Command_line::process(int argc, char** argv) | |
1077 | { | |
1078 | bool no_more_options = false; | |
1079 | int i = 0; | |
1080 | while (i < argc) | |
1081 | i = process_one_option(argc, argv, i, &no_more_options); | |
61ba1cf9 | 1082 | |
dbe717ef | 1083 | if (this->inputs_.in_group()) |
ead1e424 | 1084 | { |
35cdfc9a | 1085 | fprintf(stderr, _("%s: missing group end\n"), program_name); |
ead1e424 ILT |
1086 | this->usage(); |
1087 | } | |
1088 | ||
61ba1cf9 | 1089 | // FIXME: We should only do this when configured in native mode. |
ad2d6943 ILT |
1090 | this->options_.add_to_search_path_with_sysroot("/lib"); |
1091 | this->options_.add_to_search_path_with_sysroot("/usr/lib"); | |
1092 | ||
1093 | this->options_.add_sysroot(); | |
46738c9a ILT |
1094 | |
1095 | // Ensure options don't contradict each other and are otherwise kosher. | |
1096 | this->normalize_options(); | |
1097 | } | |
1098 | ||
3c2fafa5 ILT |
1099 | // Extract an option argument for a special option. LONGNAME is the |
1100 | // long name of the option. This sets *PRET to the return value for | |
1101 | // the special function handler to skip to the next option. | |
1102 | ||
1103 | const char* | |
1104 | Command_line::get_special_argument(const char* longname, int argc, char** argv, | |
1105 | const char* arg, bool long_option, | |
1106 | int *pret) | |
1107 | { | |
1108 | if (long_option) | |
1109 | { | |
1110 | size_t longlen = strlen(longname); | |
1111 | gold_assert(strncmp(arg, longname, longlen) == 0); | |
1112 | arg += longlen; | |
1113 | if (*arg == '=') | |
1114 | { | |
1115 | *pret = 1; | |
1116 | return arg + 1; | |
1117 | } | |
1118 | else if (argc > 1) | |
1119 | { | |
1120 | gold_assert(*arg == '\0'); | |
1121 | *pret = 2; | |
1122 | return argv[1]; | |
1123 | } | |
1124 | } | |
1125 | else | |
1126 | { | |
1127 | if (arg[1] != '\0') | |
1128 | { | |
1129 | *pret = 1; | |
1130 | return arg + 1; | |
1131 | } | |
1132 | else if (argc > 1) | |
1133 | { | |
1134 | *pret = 2; | |
1135 | return argv[1]; | |
1136 | } | |
1137 | } | |
1138 | ||
1139 | this->usage(_("missing argument"), arg); | |
1140 | } | |
1141 | ||
46738c9a ILT |
1142 | // Ensure options don't contradict each other and are otherwise kosher. |
1143 | ||
1144 | void | |
1145 | Command_line::normalize_options() | |
1146 | { | |
45aa233b | 1147 | if (this->options_.shared() && this->options_.relocatable()) |
6a74a719 ILT |
1148 | gold_fatal(_("-shared and -r are incompatible")); |
1149 | ||
45aa233b ILT |
1150 | if (this->options_.oformat() != General_options::OBJECT_FORMAT_ELF |
1151 | && (this->options_.shared() || this->options_.relocatable())) | |
516cb3d0 ILT |
1152 | gold_fatal(_("binary output format not compatible with -shared or -r")); |
1153 | ||
46738c9a ILT |
1154 | // If the user specifies both -s and -r, convert the -s as -S. |
1155 | // -r requires us to keep externally visible symbols! | |
45aa233b | 1156 | if (this->options_.strip_all() && this->options_.relocatable()) |
46738c9a ILT |
1157 | { |
1158 | // Clears the strip_all() status, replacing it with strip_debug(). | |
45aa233b | 1159 | this->options_.set_strip_debug(true); |
46738c9a ILT |
1160 | } |
1161 | ||
1162 | // FIXME: we can/should be doing a lot more sanity checking here. | |
bae7f79e ILT |
1163 | } |
1164 | ||
46738c9a | 1165 | |
bae7f79e ILT |
1166 | // Apply a command line option. |
1167 | ||
1168 | void | |
61ba1cf9 ILT |
1169 | Command_line::apply_option(const options::One_option& opt, |
1170 | const char* arg) | |
bae7f79e ILT |
1171 | { |
1172 | if (arg == NULL) | |
1173 | { | |
1174 | if (opt.general_noarg) | |
45aa233b | 1175 | (this->options_.*(opt.general_noarg))(true); |
bae7f79e | 1176 | else if (opt.dependent_noarg) |
45aa233b | 1177 | (this->position_options_.*(opt.dependent_noarg))(true); |
bae7f79e | 1178 | else |
61ba1cf9 | 1179 | gold_unreachable(); |
bae7f79e ILT |
1180 | } |
1181 | else | |
1182 | { | |
1183 | if (opt.general_arg) | |
1184 | (this->options_.*(opt.general_arg))(arg); | |
1185 | else if (opt.dependent_arg) | |
1186 | (this->position_options_.*(opt.dependent_arg))(arg); | |
1187 | else | |
61ba1cf9 | 1188 | gold_unreachable(); |
bae7f79e ILT |
1189 | } |
1190 | } | |
1191 | ||
ead1e424 ILT |
1192 | // Add an input file or library. |
1193 | ||
1194 | void | |
1195 | Command_line::add_file(const char* name, bool is_lib) | |
1196 | { | |
88dd47ac | 1197 | Input_file_argument file(name, is_lib, "", false, this->position_options_); |
dbe717ef | 1198 | this->inputs_.add_file(file); |
ead1e424 ILT |
1199 | } |
1200 | ||
61ba1cf9 ILT |
1201 | // Handle the -l option, which requires special treatment. |
1202 | ||
1203 | int | |
3c2fafa5 ILT |
1204 | Command_line::process_l_option(int argc, char** argv, char* arg, |
1205 | bool long_option) | |
61ba1cf9 ILT |
1206 | { |
1207 | int ret; | |
3c2fafa5 ILT |
1208 | const char* libname = this->get_special_argument("library", argc, argv, arg, |
1209 | long_option, &ret); | |
ead1e424 | 1210 | this->add_file(libname, true); |
61ba1cf9 ILT |
1211 | return ret; |
1212 | } | |
1213 | ||
ead1e424 ILT |
1214 | // Handle the --start-group option. |
1215 | ||
1216 | void | |
1217 | Command_line::start_group(const char* arg) | |
1218 | { | |
dbe717ef | 1219 | if (this->inputs_.in_group()) |
ead1e424 | 1220 | this->usage(_("may not nest groups"), arg); |
dbe717ef | 1221 | this->inputs_.start_group(); |
ead1e424 ILT |
1222 | } |
1223 | ||
1224 | // Handle the --end-group option. | |
1225 | ||
1226 | void | |
1227 | Command_line::end_group(const char* arg) | |
1228 | { | |
dbe717ef | 1229 | if (!this->inputs_.in_group()) |
ead1e424 | 1230 | this->usage(_("group end without group start"), arg); |
dbe717ef | 1231 | this->inputs_.end_group(); |
ead1e424 ILT |
1232 | } |
1233 | ||
bae7f79e ILT |
1234 | // Report a usage error. */ |
1235 | ||
1236 | void | |
61ba1cf9 | 1237 | Command_line::usage() |
bae7f79e ILT |
1238 | { |
1239 | fprintf(stderr, | |
1240 | _("%s: use the --help option for usage information\n"), | |
61ba1cf9 | 1241 | program_name); |
c7912668 | 1242 | ::exit(EXIT_FAILURE); |
bae7f79e ILT |
1243 | } |
1244 | ||
1245 | void | |
61ba1cf9 | 1246 | Command_line::usage(const char* msg, const char *opt) |
bae7f79e ILT |
1247 | { |
1248 | fprintf(stderr, | |
1249 | _("%s: %s: %s\n"), | |
61ba1cf9 | 1250 | program_name, opt, msg); |
bae7f79e ILT |
1251 | this->usage(); |
1252 | } | |
1253 | ||
1254 | void | |
61ba1cf9 | 1255 | Command_line::usage(const char* msg, char opt) |
bae7f79e ILT |
1256 | { |
1257 | fprintf(stderr, | |
1258 | _("%s: -%c: %s\n"), | |
61ba1cf9 | 1259 | program_name, opt, msg); |
bae7f79e ILT |
1260 | this->usage(); |
1261 | } | |
61ba1cf9 ILT |
1262 | |
1263 | } // End namespace gold. |