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bae7f79e ILT |
1 | // options.c -- handle command line options for gold |
2 | ||
6cb15b7f ILT |
3 | // Copyright 2006, 2007 Free Software Foundation, Inc. |
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 | ||
bae7f79e | 25 | #include <iostream> |
ad2d6943 ILT |
26 | #include <sys/stat.h> |
27 | #include "filenames.h" | |
28 | #include "libiberty.h" | |
bae7f79e | 29 | |
bae7f79e ILT |
30 | #include "options.h" |
31 | ||
61ba1cf9 ILT |
32 | namespace gold |
33 | { | |
34 | ||
bae7f79e ILT |
35 | // The information we keep for a single command line option. |
36 | ||
61ba1cf9 | 37 | struct options::One_option |
bae7f79e ILT |
38 | { |
39 | // The single character option name, or '\0' if this is only a long | |
40 | // option. | |
41 | char short_option; | |
42 | ||
43 | // The long option name, or NULL if this is only a short option. | |
44 | const char* long_option; | |
45 | ||
46 | // Description of the option for --help output, or NULL if there is none. | |
47 | const char* doc; | |
48 | ||
49 | // How to print the option name in --help output, or NULL to use the | |
50 | // default. | |
51 | const char* help_output; | |
52 | ||
53 | // Long option dash control. This is ignored if long_option is | |
54 | // NULL. | |
55 | enum | |
56 | { | |
57 | // Long option normally takes one dash; two dashes are also | |
58 | // accepted. | |
59 | ONE_DASH, | |
60 | // Long option normally takes two dashes; one dash is also | |
61 | // accepted. | |
62 | TWO_DASHES, | |
63 | // Long option always takes two dashes. | |
64 | EXACTLY_TWO_DASHES | |
65 | } dash; | |
66 | ||
67 | // Function for special handling, or NULL. Returns the number of | |
68 | // arguments to skip. This will normally be at least 1, but it may | |
69 | // be 0 if this function changes *argv. ARG points to the location | |
70 | // in *ARGV where the option starts, which may be helpful for a | |
71 | // short option. | |
3c2fafa5 ILT |
72 | int (*special)(int argc, char** argv, char *arg, bool long_option, |
73 | Command_line*); | |
bae7f79e ILT |
74 | |
75 | // If this is a position independent option which does not take an | |
76 | // argument, this is the member function to call to record it. | |
61ba1cf9 | 77 | void (General_options::*general_noarg)(); |
bae7f79e ILT |
78 | |
79 | // If this is a position independent function which takes an | |
80 | // argument, this is the member function to call to record it. | |
61ba1cf9 | 81 | void (General_options::*general_arg)(const char*); |
bae7f79e ILT |
82 | |
83 | // If this is a position dependent option which does not take an | |
84 | // argument, this is the member function to call to record it. | |
61ba1cf9 | 85 | void (Position_dependent_options::*dependent_noarg)(); |
bae7f79e ILT |
86 | |
87 | // If this is a position dependent option which takes an argument, | |
88 | // this is the member function to record it. | |
61ba1cf9 | 89 | void (Position_dependent_options::*dependent_arg)(const char*); |
bae7f79e ILT |
90 | |
91 | // Return whether this option takes an argument. | |
92 | bool | |
93 | takes_argument() const | |
94 | { return this->general_arg != NULL || this->dependent_arg != NULL; } | |
95 | }; | |
96 | ||
35cdfc9a ILT |
97 | // We have a separate table for -z options. |
98 | ||
99 | struct options::One_z_option | |
100 | { | |
101 | // The name of the option. | |
102 | const char* name; | |
103 | ||
104 | // The member function in General_options called to record it. | |
105 | void (General_options::*set)(); | |
106 | }; | |
107 | ||
61ba1cf9 | 108 | class options::Command_line_options |
bae7f79e ILT |
109 | { |
110 | public: | |
111 | static const One_option options[]; | |
112 | static const int options_size; | |
35cdfc9a ILT |
113 | static const One_z_option z_options[]; |
114 | static const int z_options_size; | |
bae7f79e ILT |
115 | }; |
116 | ||
61ba1cf9 ILT |
117 | } // End namespace gold. |
118 | ||
bae7f79e ILT |
119 | namespace |
120 | { | |
121 | ||
61ba1cf9 ILT |
122 | // Handle the special -l option, which adds an input file. |
123 | ||
124 | int | |
3c2fafa5 ILT |
125 | library(int argc, char** argv, char* arg, bool long_option, |
126 | gold::Command_line* cmdline) | |
61ba1cf9 | 127 | { |
3c2fafa5 ILT |
128 | return cmdline->process_l_option(argc, argv, arg, long_option); |
129 | } | |
130 | ||
131 | // Handle the special -T/--script option, which reads a linker script. | |
132 | ||
133 | int | |
134 | invoke_script(int argc, char** argv, char* arg, bool long_option, | |
135 | gold::Command_line* cmdline) | |
136 | { | |
137 | int ret; | |
138 | const char* script_name = cmdline->get_special_argument("script", argc, argv, | |
139 | arg, long_option, | |
140 | &ret); | |
141 | if (!read_commandline_script(script_name, cmdline)) | |
142 | gold::gold_error(_("%s: unable to parse script file %s\n"), | |
143 | gold::program_name, arg); | |
144 | return ret; | |
61ba1cf9 ILT |
145 | } |
146 | ||
ead1e424 ILT |
147 | // Handle the special --start-group option. |
148 | ||
149 | int | |
3c2fafa5 | 150 | start_group(int, char**, char* arg, bool, gold::Command_line* cmdline) |
ead1e424 ILT |
151 | { |
152 | cmdline->start_group(arg); | |
153 | return 1; | |
154 | } | |
155 | ||
156 | // Handle the special --end-group option. | |
157 | ||
158 | int | |
3c2fafa5 | 159 | end_group(int, char**, char* arg, bool, gold::Command_line* cmdline) |
ead1e424 ILT |
160 | { |
161 | cmdline->end_group(arg); | |
162 | return 1; | |
163 | } | |
164 | ||
bae7f79e ILT |
165 | // Report usage information for ld --help, and exit. |
166 | ||
167 | int | |
3c2fafa5 | 168 | help(int, char**, char*, bool, gold::Command_line*) |
bae7f79e ILT |
169 | { |
170 | printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name); | |
171 | ||
172 | const int options_size = gold::options::Command_line_options::options_size; | |
173 | const gold::options::One_option* options = | |
174 | gold::options::Command_line_options::options; | |
175 | for (int i = 0; i < options_size; ++i) | |
176 | { | |
177 | if (options[i].doc == NULL) | |
178 | continue; | |
179 | ||
180 | printf(" "); | |
181 | int len = 2; | |
182 | bool comma = false; | |
183 | ||
184 | int j = i; | |
185 | do | |
186 | { | |
187 | if (options[j].help_output != NULL) | |
188 | { | |
189 | if (comma) | |
190 | { | |
191 | printf(", "); | |
192 | len += 2; | |
193 | } | |
194 | printf(options[j].help_output); | |
195 | len += std::strlen(options[i].help_output); | |
a6badf5a | 196 | comma = true; |
bae7f79e ILT |
197 | } |
198 | else | |
199 | { | |
200 | if (options[j].short_option != '\0') | |
201 | { | |
202 | if (comma) | |
203 | { | |
204 | printf(", "); | |
205 | len += 2; | |
206 | } | |
207 | printf("-%c", options[j].short_option); | |
208 | len += 2; | |
a6badf5a | 209 | comma = true; |
bae7f79e ILT |
210 | } |
211 | ||
212 | if (options[j].long_option != NULL) | |
213 | { | |
214 | if (comma) | |
215 | { | |
216 | printf(", "); | |
217 | len += 2; | |
218 | } | |
219 | if (options[j].dash == gold::options::One_option::ONE_DASH) | |
220 | { | |
221 | printf("-"); | |
222 | ++len; | |
223 | } | |
224 | else | |
225 | { | |
226 | printf("--"); | |
227 | len += 2; | |
228 | } | |
229 | printf("%s", options[j].long_option); | |
230 | len += std::strlen(options[j].long_option); | |
a6badf5a | 231 | comma = true; |
bae7f79e ILT |
232 | } |
233 | } | |
234 | ++j; | |
235 | } | |
236 | while (j < options_size && options[j].doc == NULL); | |
237 | ||
a6badf5a | 238 | if (len >= 30) |
bae7f79e ILT |
239 | { |
240 | printf("\n"); | |
241 | len = 0; | |
242 | } | |
243 | for (; len < 30; ++len) | |
244 | std::putchar(' '); | |
245 | ||
246 | std::puts(options[i].doc); | |
247 | } | |
248 | ||
cd4662c7 | 249 | ::exit(0); |
bae7f79e ILT |
250 | |
251 | return 0; | |
252 | } | |
253 | ||
8486ee48 ILT |
254 | // Report version information. |
255 | ||
256 | int | |
3c2fafa5 | 257 | version(int, char**, char* opt, bool, gold::Command_line*) |
8486ee48 ILT |
258 | { |
259 | gold::print_version(opt[0] == 'v' && opt[1] == '\0'); | |
cd4662c7 | 260 | ::exit(0); |
8486ee48 ILT |
261 | return 0; |
262 | } | |
263 | ||
ad2d6943 ILT |
264 | // If the default sysroot is relocatable, try relocating it based on |
265 | // the prefix FROM. | |
266 | ||
267 | char* | |
268 | get_relative_sysroot(const char* from) | |
269 | { | |
270 | char* path = make_relative_prefix(gold::program_name, from, | |
271 | TARGET_SYSTEM_ROOT); | |
272 | if (path != NULL) | |
273 | { | |
274 | struct stat s; | |
275 | if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode)) | |
276 | return path; | |
277 | free(path); | |
278 | } | |
279 | ||
280 | return NULL; | |
281 | } | |
282 | ||
283 | // Return the default sysroot. This is set by the --with-sysroot | |
284 | // option to configure. | |
285 | ||
286 | std::string | |
287 | get_default_sysroot() | |
288 | { | |
289 | const char* sysroot = TARGET_SYSTEM_ROOT; | |
290 | if (*sysroot == '\0') | |
291 | return ""; | |
292 | ||
293 | if (TARGET_SYSTEM_ROOT_RELOCATABLE) | |
294 | { | |
295 | char* path = get_relative_sysroot (BINDIR); | |
296 | if (path == NULL) | |
297 | path = get_relative_sysroot (TOOLBINDIR); | |
298 | if (path != NULL) | |
299 | { | |
300 | std::string ret = path; | |
301 | free(path); | |
302 | return ret; | |
303 | } | |
304 | } | |
305 | ||
306 | return sysroot; | |
307 | } | |
308 | ||
61ba1cf9 ILT |
309 | } // End anonymous namespace. |
310 | ||
311 | namespace gold | |
312 | { | |
bae7f79e ILT |
313 | |
314 | // Helper macros used to specify the options. We could also do this | |
315 | // using constructors, but then g++ would generate code to initialize | |
316 | // the array. We want the array to be initialized statically so that | |
317 | // we get better startup time. | |
318 | ||
319 | #define GENERAL_NOARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 320 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
321 | NULL, func, NULL, NULL, NULL } |
322 | #define GENERAL_ARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 323 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
324 | NULL, NULL, func, NULL, NULL } |
325 | #define POSDEP_NOARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 326 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
327 | NULL, NULL, NULL, func, NULL } |
328 | #define POSDEP_ARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 329 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
330 | NULL, NULL, NULL, NULL, func } |
331 | #define SPECIAL(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 332 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
333 | func, NULL, NULL, NULL, NULL } |
334 | ||
335 | // Here is the actual list of options which we accept. | |
336 | ||
61ba1cf9 ILT |
337 | const options::One_option |
338 | options::Command_line_options::options[] = | |
bae7f79e | 339 | { |
0c5e9c22 ILT |
340 | POSDEP_NOARG('\0', "as-needed", |
341 | N_("Only set DT_NEEDED for dynamic libs if used"), | |
342 | NULL, TWO_DASHES, &Position_dependent_options::set_as_needed), | |
343 | POSDEP_NOARG('\0', "no-as-needed", | |
344 | N_("Always DT_NEEDED for dynamic libs (default)"), | |
345 | NULL, TWO_DASHES, &Position_dependent_options::clear_as_needed), | |
61611222 ILT |
346 | POSDEP_NOARG('\0', "Bdynamic", |
347 | N_("-l searches for shared libraries"), | |
348 | NULL, ONE_DASH, | |
349 | &Position_dependent_options::set_dynamic_search), | |
350 | POSDEP_NOARG('\0', "Bstatic", | |
351 | N_("-l does not search for shared libraries"), | |
352 | NULL, ONE_DASH, | |
353 | &Position_dependent_options::set_static_search), | |
51b08ebe ILT |
354 | GENERAL_NOARG('\0', "Bsymbolic", N_("Bind defined symbols locally"), |
355 | NULL, ONE_DASH, &General_options::set_symbolic), | |
a6badf5a ILT |
356 | GENERAL_NOARG('E', "export-dynamic", N_("Export all dynamic symbols"), |
357 | NULL, TWO_DASHES, &General_options::set_export_dynamic), | |
0c5e9c22 ILT |
358 | GENERAL_NOARG('\0', "eh-frame-hdr", N_("Create exception frame header"), |
359 | NULL, TWO_DASHES, &General_options::set_create_eh_frame_hdr), | |
dbe717ef ILT |
360 | GENERAL_ARG('I', "dynamic-linker", N_("Set dynamic linker path"), |
361 | N_("-I PROGRAM, --dynamic-linker PROGRAM"), TWO_DASHES, | |
362 | &General_options::set_dynamic_linker), | |
0c5e9c22 ILT |
363 | SPECIAL('l', "library", N_("Search for library LIBNAME"), |
364 | N_("-lLIBNAME, --library LIBNAME"), TWO_DASHES, | |
365 | &library), | |
bae7f79e ILT |
366 | GENERAL_ARG('L', "library-path", N_("Add directory to search path"), |
367 | N_("-L DIR, --library-path DIR"), TWO_DASHES, | |
61ba1cf9 | 368 | &General_options::add_to_search_path), |
652ec9bd ILT |
369 | GENERAL_ARG('m', NULL, N_("Ignored for compatibility"), NULL, ONE_DASH, |
370 | &General_options::ignore), | |
61ba1cf9 ILT |
371 | GENERAL_ARG('o', "output", N_("Set output file name"), |
372 | N_("-o FILE, --output FILE"), TWO_DASHES, | |
373 | &General_options::set_output_file_name), | |
0c5e9c22 ILT |
374 | GENERAL_ARG('O', NULL, N_("Optimize output file size"), |
375 | N_("-O level"), ONE_DASH, | |
376 | &General_options::set_optimization_level), | |
bae7f79e | 377 | GENERAL_NOARG('r', NULL, N_("Generate relocatable output"), NULL, |
61ba1cf9 | 378 | ONE_DASH, &General_options::set_relocatable), |
15b3cfae | 379 | GENERAL_ARG('R', "rpath", N_("Add DIR to runtime search path"), |
41f542e7 ILT |
380 | N_("-R DIR, -rpath DIR"), ONE_DASH, |
381 | &General_options::add_to_rpath), | |
15b3cfae ILT |
382 | GENERAL_ARG('\0', "rpath-link", |
383 | N_("Add DIR to link time shared library search path"), | |
384 | N_("--rpath-link DIR"), TWO_DASHES, | |
385 | &General_options::add_to_rpath_link), | |
0c5e9c22 ILT |
386 | GENERAL_NOARG('s', "strip-all", N_("Strip all symbols"), NULL, |
387 | TWO_DASHES, &General_options::set_strip_all), | |
388 | GENERAL_NOARG('S', "strip-debug", N_("Strip debugging information"), NULL, | |
389 | TWO_DASHES, &General_options::set_strip_debug), | |
92e059d8 ILT |
390 | GENERAL_NOARG('\0', "shared", N_("Generate shared library"), |
391 | NULL, ONE_DASH, &General_options::set_shared), | |
bae7f79e | 392 | GENERAL_NOARG('\0', "static", N_("Do not link against shared libraries"), |
61ba1cf9 | 393 | NULL, ONE_DASH, &General_options::set_static), |
e44fcf3b ILT |
394 | GENERAL_NOARG('\0', "stats", N_("Print resource usage statistics"), |
395 | NULL, TWO_DASHES, &General_options::set_stats), | |
ad2d6943 ILT |
396 | GENERAL_ARG('\0', "sysroot", N_("Set target system root directory"), |
397 | N_("--sysroot DIR"), TWO_DASHES, &General_options::set_sysroot), | |
3c2fafa5 ILT |
398 | SPECIAL('T', "script", N_("Read linker script"), |
399 | N_("-T FILE, --script FILE"), TWO_DASHES, | |
400 | &invoke_script), | |
0c5e9c22 ILT |
401 | GENERAL_ARG('\0', "Ttext", N_("Set the address of the .text section"), |
402 | N_("-Ttext ADDRESS"), ONE_DASH, | |
403 | &General_options::set_text_segment_address), | |
fe9a4c12 ILT |
404 | GENERAL_NOARG('\0', "threads", N_("Run the linker multi-threaded"), |
405 | NULL, TWO_DASHES, &General_options::set_threads), | |
406 | GENERAL_NOARG('\0', "no-threads", N_("Do not run the linker multi-threaded"), | |
407 | NULL, TWO_DASHES, &General_options::clear_threads), | |
408 | GENERAL_ARG('\0', "thread-count", N_("Number of threads to use"), | |
409 | N_("--thread-count COUNT"), TWO_DASHES, | |
410 | &General_options::set_thread_count), | |
411 | GENERAL_ARG('\0', "thread-count-initial", | |
412 | N_("Number of threads to use in initial pass"), | |
413 | N_("--thread-count-initial COUNT"), TWO_DASHES, | |
414 | &General_options::set_thread_count_initial), | |
415 | GENERAL_ARG('\0', "thread-count-middle", | |
416 | N_("Number of threads to use in middle pass"), | |
417 | N_("--thread-count-middle COUNT"), TWO_DASHES, | |
418 | &General_options::set_thread_count_middle), | |
419 | GENERAL_ARG('\0', "thread-count-final", | |
420 | N_("Number of threads to use in final pass"), | |
421 | N_("--thread-count-final COUNT"), TWO_DASHES, | |
422 | &General_options::set_thread_count_final), | |
4973341a ILT |
423 | POSDEP_NOARG('\0', "whole-archive", |
424 | N_("Include all archive contents"), | |
425 | NULL, TWO_DASHES, | |
426 | &Position_dependent_options::set_whole_archive), | |
427 | POSDEP_NOARG('\0', "no-whole-archive", | |
428 | N_("Include only needed archive contents"), | |
429 | NULL, TWO_DASHES, | |
430 | &Position_dependent_options::clear_whole_archive), | |
35cdfc9a ILT |
431 | |
432 | GENERAL_ARG('z', NULL, | |
433 | N_("Subcommands as follows:\n\ | |
434 | -z execstack Mark output as requiring executable stack\n\ | |
435 | -z noexecstack Mark output as not requiring executable stack"), | |
436 | N_("-z SUBCOMMAND"), ONE_DASH, | |
437 | &General_options::handle_z_option), | |
438 | ||
0c5e9c22 ILT |
439 | SPECIAL('(', "start-group", N_("Start a library search group"), NULL, |
440 | TWO_DASHES, &start_group), | |
441 | SPECIAL(')', "end-group", N_("End a library search group"), NULL, | |
442 | TWO_DASHES, &end_group), | |
bae7f79e | 443 | SPECIAL('\0', "help", N_("Report usage information"), NULL, |
8486ee48 ILT |
444 | TWO_DASHES, &help), |
445 | SPECIAL('v', "version", N_("Report version information"), NULL, | |
446 | TWO_DASHES, &version) | |
bae7f79e ILT |
447 | }; |
448 | ||
61ba1cf9 | 449 | const int options::Command_line_options::options_size = |
bae7f79e ILT |
450 | sizeof (options) / sizeof (options[0]); |
451 | ||
35cdfc9a ILT |
452 | // The -z options. |
453 | ||
454 | const options::One_z_option | |
455 | options::Command_line_options::z_options[] = | |
456 | { | |
457 | { "execstack", &General_options::set_execstack }, | |
458 | { "noexecstack", &General_options::set_noexecstack }, | |
459 | }; | |
460 | ||
461 | const int options::Command_line_options::z_options_size = | |
462 | sizeof(z_options) / sizeof(z_options[0]); | |
463 | ||
bae7f79e ILT |
464 | // The default values for the general options. |
465 | ||
61ba1cf9 | 466 | General_options::General_options() |
a6badf5a ILT |
467 | : export_dynamic_(false), |
468 | dynamic_linker_(NULL), | |
dbe717ef | 469 | search_path_(), |
ca3a67a5 | 470 | optimization_level_(0), |
61ba1cf9 ILT |
471 | output_file_name_("a.out"), |
472 | is_relocatable_(false), | |
9e2dcb77 | 473 | strip_(STRIP_NONE), |
51b08ebe | 474 | symbolic_(false), |
7da52175 | 475 | create_eh_frame_hdr_(false), |
4973341a | 476 | rpath_(), |
15b3cfae | 477 | rpath_link_(), |
92e059d8 | 478 | is_shared_(false), |
ad2d6943 | 479 | is_static_(false), |
e44fcf3b | 480 | print_stats_(false), |
0c5e9c22 | 481 | sysroot_(), |
fe9a4c12 ILT |
482 | text_segment_address_(-1U), // -1 indicates value not set by user |
483 | threads_(false), | |
484 | thread_count_initial_(0), | |
485 | thread_count_middle_(0), | |
35cdfc9a ILT |
486 | thread_count_final_(0), |
487 | execstack_(EXECSTACK_FROM_INPUT) | |
bae7f79e ILT |
488 | { |
489 | } | |
490 | ||
491 | // The default values for the position dependent options. | |
492 | ||
61ba1cf9 | 493 | Position_dependent_options::Position_dependent_options() |
4973341a ILT |
494 | : do_static_search_(false), |
495 | as_needed_(false), | |
496 | include_whole_archive_(false) | |
bae7f79e ILT |
497 | { |
498 | } | |
499 | ||
35cdfc9a ILT |
500 | // Handle the -z option. |
501 | ||
502 | void | |
503 | General_options::handle_z_option(const char* arg) | |
504 | { | |
505 | const int z_options_size = options::Command_line_options::z_options_size; | |
506 | const gold::options::One_z_option* z_options = | |
507 | gold::options::Command_line_options::z_options; | |
508 | for (int i = 0; i < z_options_size; ++i) | |
509 | { | |
510 | if (strcmp(arg, z_options[i].name) == 0) | |
511 | { | |
512 | (this->*(z_options[i].set))(); | |
513 | return; | |
514 | } | |
515 | } | |
516 | ||
517 | fprintf(stderr, _("%s: unrecognized -z subcommand: %s\n"), | |
518 | program_name, arg); | |
519 | ::exit(1); | |
520 | } | |
521 | ||
ad2d6943 ILT |
522 | // Add the sysroot, if any, to the search paths. |
523 | ||
524 | void | |
525 | General_options::add_sysroot() | |
526 | { | |
527 | if (this->sysroot_.empty()) | |
528 | { | |
529 | this->sysroot_ = get_default_sysroot(); | |
530 | if (this->sysroot_.empty()) | |
531 | return; | |
532 | } | |
533 | ||
534 | const char* sysroot = this->sysroot_.c_str(); | |
535 | char* canonical_sysroot = lrealpath(sysroot); | |
536 | ||
537 | for (Dir_list::iterator p = this->search_path_.begin(); | |
538 | p != this->search_path_.end(); | |
539 | ++p) | |
540 | p->add_sysroot(sysroot, canonical_sysroot); | |
541 | ||
542 | free(canonical_sysroot); | |
543 | } | |
544 | ||
545 | // Search_directory methods. | |
546 | ||
547 | // This is called if we have a sysroot. Apply the sysroot if | |
548 | // appropriate. Record whether the directory is in the sysroot. | |
549 | ||
550 | void | |
551 | Search_directory::add_sysroot(const char* sysroot, | |
552 | const char* canonical_sysroot) | |
553 | { | |
554 | gold_assert(*sysroot != '\0'); | |
555 | if (this->put_in_sysroot_) | |
556 | { | |
557 | if (!IS_DIR_SEPARATOR(this->name_[0]) | |
558 | && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1])) | |
559 | this->name_ = '/' + this->name_; | |
560 | this->name_ = sysroot + this->name_; | |
561 | this->is_in_sysroot_ = true; | |
562 | } | |
563 | else | |
564 | { | |
565 | // Check whether this entry is in the sysroot. To do this | |
566 | // correctly, we need to use canonical names. Otherwise we will | |
567 | // get confused by the ../../.. paths that gcc tends to use. | |
568 | char* canonical_name = lrealpath(this->name_.c_str()); | |
569 | int canonical_name_len = strlen(canonical_name); | |
570 | int canonical_sysroot_len = strlen(canonical_sysroot); | |
571 | if (canonical_name_len > canonical_sysroot_len | |
572 | && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len])) | |
573 | { | |
574 | canonical_name[canonical_sysroot_len] = '\0'; | |
575 | if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0) | |
576 | this->is_in_sysroot_ = true; | |
577 | } | |
578 | free(canonical_name); | |
579 | } | |
580 | } | |
581 | ||
dbe717ef ILT |
582 | // Input_arguments methods. |
583 | ||
584 | // Add a file to the list. | |
585 | ||
586 | void | |
587 | Input_arguments::add_file(const Input_file_argument& file) | |
588 | { | |
589 | if (!this->in_group_) | |
590 | this->input_argument_list_.push_back(Input_argument(file)); | |
591 | else | |
592 | { | |
a3ad94ed ILT |
593 | gold_assert(!this->input_argument_list_.empty()); |
594 | gold_assert(this->input_argument_list_.back().is_group()); | |
dbe717ef ILT |
595 | this->input_argument_list_.back().group()->add_file(file); |
596 | } | |
597 | } | |
598 | ||
599 | // Start a group. | |
600 | ||
601 | void | |
602 | Input_arguments::start_group() | |
603 | { | |
a3ad94ed | 604 | gold_assert(!this->in_group_); |
dbe717ef ILT |
605 | Input_file_group* group = new Input_file_group(); |
606 | this->input_argument_list_.push_back(Input_argument(group)); | |
607 | this->in_group_ = true; | |
608 | } | |
609 | ||
610 | // End a group. | |
611 | ||
612 | void | |
613 | Input_arguments::end_group() | |
614 | { | |
a3ad94ed | 615 | gold_assert(this->in_group_); |
dbe717ef ILT |
616 | this->in_group_ = false; |
617 | } | |
618 | ||
ead1e424 | 619 | // Command_line options. |
bae7f79e | 620 | |
61ba1cf9 | 621 | Command_line::Command_line() |
dbe717ef | 622 | : options_(), position_options_(), inputs_() |
bae7f79e ILT |
623 | { |
624 | } | |
625 | ||
626 | // Process the command line options. | |
627 | ||
628 | void | |
61ba1cf9 | 629 | Command_line::process(int argc, char** argv) |
bae7f79e | 630 | { |
61ba1cf9 ILT |
631 | const int options_size = options::Command_line_options::options_size; |
632 | const options::One_option* options = | |
633 | options::Command_line_options::options; | |
bae7f79e ILT |
634 | bool no_more_options = false; |
635 | int i = 0; | |
636 | while (i < argc) | |
637 | { | |
638 | if (argv[i][0] != '-' || no_more_options) | |
639 | { | |
ead1e424 | 640 | this->add_file(argv[i], false); |
bae7f79e ILT |
641 | ++i; |
642 | continue; | |
643 | } | |
644 | ||
645 | // Option starting with '-'. | |
646 | int dashes = 1; | |
647 | if (argv[i][1] == '-') | |
648 | { | |
649 | dashes = 2; | |
650 | if (argv[i][2] == '\0') | |
651 | { | |
652 | no_more_options = true; | |
653 | continue; | |
654 | } | |
655 | } | |
656 | ||
657 | // Look for a long option match. | |
658 | char* opt = argv[i] + dashes; | |
659 | char first = opt[0]; | |
660 | int skiparg = 0; | |
661 | char* arg = strchr(opt, '='); | |
ad2d6943 | 662 | bool argument_with_equals = arg != NULL; |
bae7f79e | 663 | if (arg != NULL) |
ad2d6943 ILT |
664 | { |
665 | *arg = '\0'; | |
666 | ++arg; | |
667 | } | |
bae7f79e ILT |
668 | else if (i + 1 < argc) |
669 | { | |
670 | arg = argv[i + 1]; | |
671 | skiparg = 1; | |
672 | } | |
673 | ||
674 | int j; | |
675 | for (j = 0; j < options_size; ++j) | |
676 | { | |
677 | if (options[j].long_option != NULL | |
678 | && (dashes == 2 | |
679 | || (options[j].dash | |
61ba1cf9 | 680 | != options::One_option::EXACTLY_TWO_DASHES)) |
bae7f79e ILT |
681 | && first == options[j].long_option[0] |
682 | && strcmp(opt, options[j].long_option) == 0) | |
683 | { | |
684 | if (options[j].special) | |
3c2fafa5 ILT |
685 | { |
686 | // Restore the '=' we clobbered above. | |
687 | if (arg != NULL && skiparg == 0) | |
688 | arg[-1] = '='; | |
689 | i += options[j].special(argc - i, argv + i, opt, true, this); | |
690 | } | |
bae7f79e ILT |
691 | else |
692 | { | |
693 | if (!options[j].takes_argument()) | |
694 | { | |
ad2d6943 ILT |
695 | if (argument_with_equals) |
696 | this->usage(_("unexpected argument"), argv[i]); | |
bae7f79e ILT |
697 | arg = NULL; |
698 | skiparg = 0; | |
699 | } | |
700 | else | |
701 | { | |
702 | if (arg == NULL) | |
703 | this->usage(_("missing argument"), argv[i]); | |
704 | } | |
705 | this->apply_option(options[j], arg); | |
706 | i += skiparg + 1; | |
707 | } | |
708 | break; | |
709 | } | |
710 | } | |
711 | if (j < options_size) | |
712 | continue; | |
713 | ||
714 | // If we saw two dashes, we need to see a long option. | |
715 | if (dashes == 2) | |
716 | this->usage(_("unknown option"), argv[i]); | |
717 | ||
718 | // Look for a short option match. There may be more than one | |
719 | // short option in a given argument. | |
720 | bool done = false; | |
721 | char* s = argv[i] + 1; | |
722 | ++i; | |
723 | while (*s != '\0' && !done) | |
724 | { | |
725 | char opt = *s; | |
726 | int j; | |
727 | for (j = 0; j < options_size; ++j) | |
728 | { | |
729 | if (options[j].short_option == opt) | |
730 | { | |
731 | if (options[j].special) | |
732 | { | |
733 | // Undo the argument skip done above. | |
734 | --i; | |
3c2fafa5 ILT |
735 | i += options[j].special(argc - i, argv + i, s, false, |
736 | this); | |
bae7f79e ILT |
737 | done = true; |
738 | } | |
739 | else | |
740 | { | |
741 | arg = NULL; | |
742 | if (options[j].takes_argument()) | |
743 | { | |
744 | if (s[1] != '\0') | |
745 | { | |
746 | arg = s + 1; | |
747 | done = true; | |
748 | } | |
749 | else if (i < argc) | |
750 | { | |
751 | arg = argv[i]; | |
752 | ++i; | |
753 | } | |
754 | else | |
755 | this->usage(_("missing argument"), opt); | |
756 | } | |
757 | this->apply_option(options[j], arg); | |
758 | } | |
759 | break; | |
760 | } | |
761 | } | |
762 | ||
763 | if (j >= options_size) | |
764 | this->usage(_("unknown option"), *s); | |
765 | ||
766 | ++s; | |
767 | } | |
768 | } | |
61ba1cf9 | 769 | |
dbe717ef | 770 | if (this->inputs_.in_group()) |
ead1e424 | 771 | { |
35cdfc9a | 772 | fprintf(stderr, _("%s: missing group end\n"), program_name); |
ead1e424 ILT |
773 | this->usage(); |
774 | } | |
775 | ||
61ba1cf9 | 776 | // FIXME: We should only do this when configured in native mode. |
ad2d6943 ILT |
777 | this->options_.add_to_search_path_with_sysroot("/lib"); |
778 | this->options_.add_to_search_path_with_sysroot("/usr/lib"); | |
779 | ||
780 | this->options_.add_sysroot(); | |
46738c9a ILT |
781 | |
782 | // Ensure options don't contradict each other and are otherwise kosher. | |
783 | this->normalize_options(); | |
784 | } | |
785 | ||
3c2fafa5 ILT |
786 | // Extract an option argument for a special option. LONGNAME is the |
787 | // long name of the option. This sets *PRET to the return value for | |
788 | // the special function handler to skip to the next option. | |
789 | ||
790 | const char* | |
791 | Command_line::get_special_argument(const char* longname, int argc, char** argv, | |
792 | const char* arg, bool long_option, | |
793 | int *pret) | |
794 | { | |
795 | if (long_option) | |
796 | { | |
797 | size_t longlen = strlen(longname); | |
798 | gold_assert(strncmp(arg, longname, longlen) == 0); | |
799 | arg += longlen; | |
800 | if (*arg == '=') | |
801 | { | |
802 | *pret = 1; | |
803 | return arg + 1; | |
804 | } | |
805 | else if (argc > 1) | |
806 | { | |
807 | gold_assert(*arg == '\0'); | |
808 | *pret = 2; | |
809 | return argv[1]; | |
810 | } | |
811 | } | |
812 | else | |
813 | { | |
814 | if (arg[1] != '\0') | |
815 | { | |
816 | *pret = 1; | |
817 | return arg + 1; | |
818 | } | |
819 | else if (argc > 1) | |
820 | { | |
821 | *pret = 2; | |
822 | return argv[1]; | |
823 | } | |
824 | } | |
825 | ||
826 | this->usage(_("missing argument"), arg); | |
827 | } | |
828 | ||
46738c9a ILT |
829 | // Ensure options don't contradict each other and are otherwise kosher. |
830 | ||
831 | void | |
832 | Command_line::normalize_options() | |
833 | { | |
834 | // If the user specifies both -s and -r, convert the -s as -S. | |
835 | // -r requires us to keep externally visible symbols! | |
836 | if (this->options_.strip_all() && this->options_.is_relocatable()) | |
837 | { | |
838 | // Clears the strip_all() status, replacing it with strip_debug(). | |
839 | this->options_.set_strip_debug(); | |
840 | } | |
841 | ||
842 | // FIXME: we can/should be doing a lot more sanity checking here. | |
bae7f79e ILT |
843 | } |
844 | ||
46738c9a | 845 | |
bae7f79e ILT |
846 | // Apply a command line option. |
847 | ||
848 | void | |
61ba1cf9 ILT |
849 | Command_line::apply_option(const options::One_option& opt, |
850 | const char* arg) | |
bae7f79e ILT |
851 | { |
852 | if (arg == NULL) | |
853 | { | |
854 | if (opt.general_noarg) | |
855 | (this->options_.*(opt.general_noarg))(); | |
856 | else if (opt.dependent_noarg) | |
857 | (this->position_options_.*(opt.dependent_noarg))(); | |
858 | else | |
61ba1cf9 | 859 | gold_unreachable(); |
bae7f79e ILT |
860 | } |
861 | else | |
862 | { | |
863 | if (opt.general_arg) | |
864 | (this->options_.*(opt.general_arg))(arg); | |
865 | else if (opt.dependent_arg) | |
866 | (this->position_options_.*(opt.dependent_arg))(arg); | |
867 | else | |
61ba1cf9 | 868 | gold_unreachable(); |
bae7f79e ILT |
869 | } |
870 | } | |
871 | ||
ead1e424 ILT |
872 | // Add an input file or library. |
873 | ||
874 | void | |
875 | Command_line::add_file(const char* name, bool is_lib) | |
876 | { | |
51dee2fe | 877 | Input_file_argument file(name, is_lib, "", this->position_options_); |
dbe717ef | 878 | this->inputs_.add_file(file); |
ead1e424 ILT |
879 | } |
880 | ||
61ba1cf9 ILT |
881 | // Handle the -l option, which requires special treatment. |
882 | ||
883 | int | |
3c2fafa5 ILT |
884 | Command_line::process_l_option(int argc, char** argv, char* arg, |
885 | bool long_option) | |
61ba1cf9 ILT |
886 | { |
887 | int ret; | |
3c2fafa5 ILT |
888 | const char* libname = this->get_special_argument("library", argc, argv, arg, |
889 | long_option, &ret); | |
ead1e424 | 890 | this->add_file(libname, true); |
61ba1cf9 ILT |
891 | return ret; |
892 | } | |
893 | ||
ead1e424 ILT |
894 | // Handle the --start-group option. |
895 | ||
896 | void | |
897 | Command_line::start_group(const char* arg) | |
898 | { | |
dbe717ef | 899 | if (this->inputs_.in_group()) |
ead1e424 | 900 | this->usage(_("may not nest groups"), arg); |
dbe717ef | 901 | this->inputs_.start_group(); |
ead1e424 ILT |
902 | } |
903 | ||
904 | // Handle the --end-group option. | |
905 | ||
906 | void | |
907 | Command_line::end_group(const char* arg) | |
908 | { | |
dbe717ef | 909 | if (!this->inputs_.in_group()) |
ead1e424 | 910 | this->usage(_("group end without group start"), arg); |
dbe717ef | 911 | this->inputs_.end_group(); |
ead1e424 ILT |
912 | } |
913 | ||
bae7f79e ILT |
914 | // Report a usage error. */ |
915 | ||
916 | void | |
61ba1cf9 | 917 | Command_line::usage() |
bae7f79e ILT |
918 | { |
919 | fprintf(stderr, | |
920 | _("%s: use the --help option for usage information\n"), | |
61ba1cf9 | 921 | program_name); |
cd4662c7 | 922 | ::exit(1); |
bae7f79e ILT |
923 | } |
924 | ||
925 | void | |
61ba1cf9 | 926 | Command_line::usage(const char* msg, const char *opt) |
bae7f79e ILT |
927 | { |
928 | fprintf(stderr, | |
929 | _("%s: %s: %s\n"), | |
61ba1cf9 | 930 | program_name, opt, msg); |
bae7f79e ILT |
931 | this->usage(); |
932 | } | |
933 | ||
934 | void | |
61ba1cf9 | 935 | Command_line::usage(const char* msg, char opt) |
bae7f79e ILT |
936 | { |
937 | fprintf(stderr, | |
938 | _("%s: -%c: %s\n"), | |
61ba1cf9 | 939 | program_name, opt, msg); |
bae7f79e ILT |
940 | this->usage(); |
941 | } | |
61ba1cf9 ILT |
942 | |
943 | } // End namespace gold. |