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