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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. | |
61ba1cf9 | 72 | int (*special)(int argc, char** argv, char *arg, Command_line*); |
bae7f79e ILT |
73 | |
74 | // If this is a position independent option which does not take an | |
75 | // argument, this is the member function to call to record it. | |
61ba1cf9 | 76 | void (General_options::*general_noarg)(); |
bae7f79e ILT |
77 | |
78 | // If this is a position independent function which takes an | |
79 | // argument, this is the member function to call to record it. | |
61ba1cf9 | 80 | void (General_options::*general_arg)(const char*); |
bae7f79e ILT |
81 | |
82 | // If this is a position dependent option which does not take an | |
83 | // argument, this is the member function to call to record it. | |
61ba1cf9 | 84 | void (Position_dependent_options::*dependent_noarg)(); |
bae7f79e ILT |
85 | |
86 | // If this is a position dependent option which takes an argument, | |
87 | // this is the member function to record it. | |
61ba1cf9 | 88 | void (Position_dependent_options::*dependent_arg)(const char*); |
bae7f79e ILT |
89 | |
90 | // Return whether this option takes an argument. | |
91 | bool | |
92 | takes_argument() const | |
93 | { return this->general_arg != NULL || this->dependent_arg != NULL; } | |
94 | }; | |
95 | ||
61ba1cf9 | 96 | class options::Command_line_options |
bae7f79e ILT |
97 | { |
98 | public: | |
99 | static const One_option options[]; | |
100 | static const int options_size; | |
101 | }; | |
102 | ||
61ba1cf9 ILT |
103 | } // End namespace gold. |
104 | ||
bae7f79e ILT |
105 | namespace |
106 | { | |
107 | ||
61ba1cf9 ILT |
108 | // Handle the special -l option, which adds an input file. |
109 | ||
110 | int | |
111 | library(int argc, char** argv, char* arg, gold::Command_line* cmdline) | |
112 | { | |
113 | return cmdline->process_l_option(argc, argv, arg); | |
114 | } | |
115 | ||
ead1e424 ILT |
116 | // Handle the special --start-group option. |
117 | ||
118 | int | |
119 | start_group(int, char**, char* arg, gold::Command_line* cmdline) | |
120 | { | |
121 | cmdline->start_group(arg); | |
122 | return 1; | |
123 | } | |
124 | ||
125 | // Handle the special --end-group option. | |
126 | ||
127 | int | |
128 | end_group(int, char**, char* arg, gold::Command_line* cmdline) | |
129 | { | |
130 | cmdline->end_group(arg); | |
131 | return 1; | |
132 | } | |
133 | ||
bae7f79e ILT |
134 | // Report usage information for ld --help, and exit. |
135 | ||
136 | int | |
137 | help(int, char**, char*, gold::Command_line*) | |
138 | { | |
139 | printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name); | |
140 | ||
141 | const int options_size = gold::options::Command_line_options::options_size; | |
142 | const gold::options::One_option* options = | |
143 | gold::options::Command_line_options::options; | |
144 | for (int i = 0; i < options_size; ++i) | |
145 | { | |
146 | if (options[i].doc == NULL) | |
147 | continue; | |
148 | ||
149 | printf(" "); | |
150 | int len = 2; | |
151 | bool comma = false; | |
152 | ||
153 | int j = i; | |
154 | do | |
155 | { | |
156 | if (options[j].help_output != NULL) | |
157 | { | |
158 | if (comma) | |
159 | { | |
160 | printf(", "); | |
161 | len += 2; | |
162 | } | |
163 | printf(options[j].help_output); | |
164 | len += std::strlen(options[i].help_output); | |
a6badf5a | 165 | comma = true; |
bae7f79e ILT |
166 | } |
167 | else | |
168 | { | |
169 | if (options[j].short_option != '\0') | |
170 | { | |
171 | if (comma) | |
172 | { | |
173 | printf(", "); | |
174 | len += 2; | |
175 | } | |
176 | printf("-%c", options[j].short_option); | |
177 | len += 2; | |
a6badf5a | 178 | comma = true; |
bae7f79e ILT |
179 | } |
180 | ||
181 | if (options[j].long_option != NULL) | |
182 | { | |
183 | if (comma) | |
184 | { | |
185 | printf(", "); | |
186 | len += 2; | |
187 | } | |
188 | if (options[j].dash == gold::options::One_option::ONE_DASH) | |
189 | { | |
190 | printf("-"); | |
191 | ++len; | |
192 | } | |
193 | else | |
194 | { | |
195 | printf("--"); | |
196 | len += 2; | |
197 | } | |
198 | printf("%s", options[j].long_option); | |
199 | len += std::strlen(options[j].long_option); | |
a6badf5a | 200 | comma = true; |
bae7f79e ILT |
201 | } |
202 | } | |
203 | ++j; | |
204 | } | |
205 | while (j < options_size && options[j].doc == NULL); | |
206 | ||
a6badf5a | 207 | if (len >= 30) |
bae7f79e ILT |
208 | { |
209 | printf("\n"); | |
210 | len = 0; | |
211 | } | |
212 | for (; len < 30; ++len) | |
213 | std::putchar(' '); | |
214 | ||
215 | std::puts(options[i].doc); | |
216 | } | |
217 | ||
cd4662c7 | 218 | ::exit(0); |
bae7f79e ILT |
219 | |
220 | return 0; | |
221 | } | |
222 | ||
8486ee48 ILT |
223 | // Report version information. |
224 | ||
225 | int | |
226 | version(int, char**, char* opt, gold::Command_line*) | |
227 | { | |
228 | gold::print_version(opt[0] == 'v' && opt[1] == '\0'); | |
cd4662c7 | 229 | ::exit(0); |
8486ee48 ILT |
230 | return 0; |
231 | } | |
232 | ||
ad2d6943 ILT |
233 | // If the default sysroot is relocatable, try relocating it based on |
234 | // the prefix FROM. | |
235 | ||
236 | char* | |
237 | get_relative_sysroot(const char* from) | |
238 | { | |
239 | char* path = make_relative_prefix(gold::program_name, from, | |
240 | TARGET_SYSTEM_ROOT); | |
241 | if (path != NULL) | |
242 | { | |
243 | struct stat s; | |
244 | if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode)) | |
245 | return path; | |
246 | free(path); | |
247 | } | |
248 | ||
249 | return NULL; | |
250 | } | |
251 | ||
252 | // Return the default sysroot. This is set by the --with-sysroot | |
253 | // option to configure. | |
254 | ||
255 | std::string | |
256 | get_default_sysroot() | |
257 | { | |
258 | const char* sysroot = TARGET_SYSTEM_ROOT; | |
259 | if (*sysroot == '\0') | |
260 | return ""; | |
261 | ||
262 | if (TARGET_SYSTEM_ROOT_RELOCATABLE) | |
263 | { | |
264 | char* path = get_relative_sysroot (BINDIR); | |
265 | if (path == NULL) | |
266 | path = get_relative_sysroot (TOOLBINDIR); | |
267 | if (path != NULL) | |
268 | { | |
269 | std::string ret = path; | |
270 | free(path); | |
271 | return ret; | |
272 | } | |
273 | } | |
274 | ||
275 | return sysroot; | |
276 | } | |
277 | ||
61ba1cf9 ILT |
278 | } // End anonymous namespace. |
279 | ||
280 | namespace gold | |
281 | { | |
bae7f79e ILT |
282 | |
283 | // Helper macros used to specify the options. We could also do this | |
284 | // using constructors, but then g++ would generate code to initialize | |
285 | // the array. We want the array to be initialized statically so that | |
286 | // we get better startup time. | |
287 | ||
288 | #define GENERAL_NOARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 289 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
290 | NULL, func, NULL, NULL, NULL } |
291 | #define GENERAL_ARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 292 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
293 | NULL, NULL, func, NULL, NULL } |
294 | #define POSDEP_NOARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 295 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
296 | NULL, NULL, NULL, func, NULL } |
297 | #define POSDEP_ARG(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 298 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
299 | NULL, NULL, NULL, NULL, func } |
300 | #define SPECIAL(short_option, long_option, doc, help, dash, func) \ | |
61ba1cf9 | 301 | { short_option, long_option, doc, help, options::One_option::dash, \ |
bae7f79e ILT |
302 | func, NULL, NULL, NULL, NULL } |
303 | ||
304 | // Here is the actual list of options which we accept. | |
305 | ||
61ba1cf9 ILT |
306 | const options::One_option |
307 | options::Command_line_options::options[] = | |
bae7f79e | 308 | { |
0c5e9c22 ILT |
309 | POSDEP_NOARG('\0', "as-needed", |
310 | N_("Only set DT_NEEDED for dynamic libs if used"), | |
311 | NULL, TWO_DASHES, &Position_dependent_options::set_as_needed), | |
312 | POSDEP_NOARG('\0', "no-as-needed", | |
313 | N_("Always DT_NEEDED for dynamic libs (default)"), | |
314 | NULL, TWO_DASHES, &Position_dependent_options::clear_as_needed), | |
a6badf5a ILT |
315 | GENERAL_NOARG('E', "export-dynamic", N_("Export all dynamic symbols"), |
316 | NULL, TWO_DASHES, &General_options::set_export_dynamic), | |
0c5e9c22 ILT |
317 | GENERAL_NOARG('\0', "eh-frame-hdr", N_("Create exception frame header"), |
318 | NULL, TWO_DASHES, &General_options::set_create_eh_frame_hdr), | |
dbe717ef ILT |
319 | GENERAL_ARG('I', "dynamic-linker", N_("Set dynamic linker path"), |
320 | N_("-I PROGRAM, --dynamic-linker PROGRAM"), TWO_DASHES, | |
321 | &General_options::set_dynamic_linker), | |
0c5e9c22 ILT |
322 | SPECIAL('l', "library", N_("Search for library LIBNAME"), |
323 | N_("-lLIBNAME, --library LIBNAME"), TWO_DASHES, | |
324 | &library), | |
bae7f79e ILT |
325 | GENERAL_ARG('L', "library-path", N_("Add directory to search path"), |
326 | N_("-L DIR, --library-path DIR"), TWO_DASHES, | |
61ba1cf9 | 327 | &General_options::add_to_search_path), |
652ec9bd ILT |
328 | GENERAL_ARG('m', NULL, N_("Ignored for compatibility"), NULL, ONE_DASH, |
329 | &General_options::ignore), | |
61ba1cf9 ILT |
330 | GENERAL_ARG('o', "output", N_("Set output file name"), |
331 | N_("-o FILE, --output FILE"), TWO_DASHES, | |
332 | &General_options::set_output_file_name), | |
0c5e9c22 ILT |
333 | GENERAL_ARG('O', NULL, N_("Optimize output file size"), |
334 | N_("-O level"), ONE_DASH, | |
335 | &General_options::set_optimization_level), | |
bae7f79e | 336 | GENERAL_NOARG('r', NULL, N_("Generate relocatable output"), NULL, |
61ba1cf9 | 337 | ONE_DASH, &General_options::set_relocatable), |
15b3cfae | 338 | GENERAL_ARG('R', "rpath", N_("Add DIR to runtime search path"), |
41f542e7 ILT |
339 | N_("-R DIR, -rpath DIR"), ONE_DASH, |
340 | &General_options::add_to_rpath), | |
15b3cfae ILT |
341 | GENERAL_ARG('\0', "rpath-link", |
342 | N_("Add DIR to link time shared library search path"), | |
343 | N_("--rpath-link DIR"), TWO_DASHES, | |
344 | &General_options::add_to_rpath_link), | |
0c5e9c22 ILT |
345 | GENERAL_NOARG('s', "strip-all", N_("Strip all symbols"), NULL, |
346 | TWO_DASHES, &General_options::set_strip_all), | |
347 | GENERAL_NOARG('S', "strip-debug", N_("Strip debugging information"), NULL, | |
348 | TWO_DASHES, &General_options::set_strip_debug), | |
92e059d8 ILT |
349 | GENERAL_NOARG('\0', "shared", N_("Generate shared library"), |
350 | NULL, ONE_DASH, &General_options::set_shared), | |
bae7f79e | 351 | GENERAL_NOARG('\0', "static", N_("Do not link against shared libraries"), |
61ba1cf9 | 352 | NULL, ONE_DASH, &General_options::set_static), |
e44fcf3b ILT |
353 | GENERAL_NOARG('\0', "stats", N_("Print resource usage statistics"), |
354 | NULL, TWO_DASHES, &General_options::set_stats), | |
ad2d6943 ILT |
355 | GENERAL_ARG('\0', "sysroot", N_("Set target system root directory"), |
356 | N_("--sysroot DIR"), TWO_DASHES, &General_options::set_sysroot), | |
0c5e9c22 ILT |
357 | GENERAL_ARG('\0', "Ttext", N_("Set the address of the .text section"), |
358 | N_("-Ttext ADDRESS"), ONE_DASH, | |
359 | &General_options::set_text_segment_address), | |
4973341a ILT |
360 | POSDEP_NOARG('\0', "whole-archive", |
361 | N_("Include all archive contents"), | |
362 | NULL, TWO_DASHES, | |
363 | &Position_dependent_options::set_whole_archive), | |
364 | POSDEP_NOARG('\0', "no-whole-archive", | |
365 | N_("Include only needed archive contents"), | |
366 | NULL, TWO_DASHES, | |
367 | &Position_dependent_options::clear_whole_archive), | |
0c5e9c22 ILT |
368 | SPECIAL('(', "start-group", N_("Start a library search group"), NULL, |
369 | TWO_DASHES, &start_group), | |
370 | SPECIAL(')', "end-group", N_("End a library search group"), NULL, | |
371 | TWO_DASHES, &end_group), | |
bae7f79e | 372 | SPECIAL('\0', "help", N_("Report usage information"), NULL, |
8486ee48 ILT |
373 | TWO_DASHES, &help), |
374 | SPECIAL('v', "version", N_("Report version information"), NULL, | |
375 | TWO_DASHES, &version) | |
bae7f79e ILT |
376 | }; |
377 | ||
61ba1cf9 | 378 | const int options::Command_line_options::options_size = |
bae7f79e ILT |
379 | sizeof (options) / sizeof (options[0]); |
380 | ||
381 | // The default values for the general options. | |
382 | ||
61ba1cf9 | 383 | General_options::General_options() |
a6badf5a ILT |
384 | : export_dynamic_(false), |
385 | dynamic_linker_(NULL), | |
dbe717ef | 386 | search_path_(), |
ca3a67a5 | 387 | optimization_level_(0), |
61ba1cf9 ILT |
388 | output_file_name_("a.out"), |
389 | is_relocatable_(false), | |
9e2dcb77 | 390 | strip_(STRIP_NONE), |
7da52175 | 391 | create_eh_frame_hdr_(false), |
4973341a | 392 | rpath_(), |
15b3cfae | 393 | rpath_link_(), |
92e059d8 | 394 | is_shared_(false), |
ad2d6943 | 395 | is_static_(false), |
e44fcf3b | 396 | print_stats_(false), |
0c5e9c22 ILT |
397 | sysroot_(), |
398 | text_segment_address_(-1U) // -1 indicates value not set by user | |
bae7f79e ILT |
399 | { |
400 | } | |
401 | ||
402 | // The default values for the position dependent options. | |
403 | ||
61ba1cf9 | 404 | Position_dependent_options::Position_dependent_options() |
4973341a ILT |
405 | : do_static_search_(false), |
406 | as_needed_(false), | |
407 | include_whole_archive_(false) | |
bae7f79e ILT |
408 | { |
409 | } | |
410 | ||
ad2d6943 ILT |
411 | // Add the sysroot, if any, to the search paths. |
412 | ||
413 | void | |
414 | General_options::add_sysroot() | |
415 | { | |
416 | if (this->sysroot_.empty()) | |
417 | { | |
418 | this->sysroot_ = get_default_sysroot(); | |
419 | if (this->sysroot_.empty()) | |
420 | return; | |
421 | } | |
422 | ||
423 | const char* sysroot = this->sysroot_.c_str(); | |
424 | char* canonical_sysroot = lrealpath(sysroot); | |
425 | ||
426 | for (Dir_list::iterator p = this->search_path_.begin(); | |
427 | p != this->search_path_.end(); | |
428 | ++p) | |
429 | p->add_sysroot(sysroot, canonical_sysroot); | |
430 | ||
431 | free(canonical_sysroot); | |
432 | } | |
433 | ||
434 | // Search_directory methods. | |
435 | ||
436 | // This is called if we have a sysroot. Apply the sysroot if | |
437 | // appropriate. Record whether the directory is in the sysroot. | |
438 | ||
439 | void | |
440 | Search_directory::add_sysroot(const char* sysroot, | |
441 | const char* canonical_sysroot) | |
442 | { | |
443 | gold_assert(*sysroot != '\0'); | |
444 | if (this->put_in_sysroot_) | |
445 | { | |
446 | if (!IS_DIR_SEPARATOR(this->name_[0]) | |
447 | && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1])) | |
448 | this->name_ = '/' + this->name_; | |
449 | this->name_ = sysroot + this->name_; | |
450 | this->is_in_sysroot_ = true; | |
451 | } | |
452 | else | |
453 | { | |
454 | // Check whether this entry is in the sysroot. To do this | |
455 | // correctly, we need to use canonical names. Otherwise we will | |
456 | // get confused by the ../../.. paths that gcc tends to use. | |
457 | char* canonical_name = lrealpath(this->name_.c_str()); | |
458 | int canonical_name_len = strlen(canonical_name); | |
459 | int canonical_sysroot_len = strlen(canonical_sysroot); | |
460 | if (canonical_name_len > canonical_sysroot_len | |
461 | && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len])) | |
462 | { | |
463 | canonical_name[canonical_sysroot_len] = '\0'; | |
464 | if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0) | |
465 | this->is_in_sysroot_ = true; | |
466 | } | |
467 | free(canonical_name); | |
468 | } | |
469 | } | |
470 | ||
dbe717ef ILT |
471 | // Input_arguments methods. |
472 | ||
473 | // Add a file to the list. | |
474 | ||
475 | void | |
476 | Input_arguments::add_file(const Input_file_argument& file) | |
477 | { | |
478 | if (!this->in_group_) | |
479 | this->input_argument_list_.push_back(Input_argument(file)); | |
480 | else | |
481 | { | |
a3ad94ed ILT |
482 | gold_assert(!this->input_argument_list_.empty()); |
483 | gold_assert(this->input_argument_list_.back().is_group()); | |
dbe717ef ILT |
484 | this->input_argument_list_.back().group()->add_file(file); |
485 | } | |
486 | } | |
487 | ||
488 | // Start a group. | |
489 | ||
490 | void | |
491 | Input_arguments::start_group() | |
492 | { | |
a3ad94ed | 493 | gold_assert(!this->in_group_); |
dbe717ef ILT |
494 | Input_file_group* group = new Input_file_group(); |
495 | this->input_argument_list_.push_back(Input_argument(group)); | |
496 | this->in_group_ = true; | |
497 | } | |
498 | ||
499 | // End a group. | |
500 | ||
501 | void | |
502 | Input_arguments::end_group() | |
503 | { | |
a3ad94ed | 504 | gold_assert(this->in_group_); |
dbe717ef ILT |
505 | this->in_group_ = false; |
506 | } | |
507 | ||
ead1e424 | 508 | // Command_line options. |
bae7f79e | 509 | |
61ba1cf9 | 510 | Command_line::Command_line() |
dbe717ef | 511 | : options_(), position_options_(), inputs_() |
bae7f79e ILT |
512 | { |
513 | } | |
514 | ||
515 | // Process the command line options. | |
516 | ||
517 | void | |
61ba1cf9 | 518 | Command_line::process(int argc, char** argv) |
bae7f79e | 519 | { |
61ba1cf9 ILT |
520 | const int options_size = options::Command_line_options::options_size; |
521 | const options::One_option* options = | |
522 | options::Command_line_options::options; | |
bae7f79e ILT |
523 | bool no_more_options = false; |
524 | int i = 0; | |
525 | while (i < argc) | |
526 | { | |
527 | if (argv[i][0] != '-' || no_more_options) | |
528 | { | |
ead1e424 | 529 | this->add_file(argv[i], false); |
bae7f79e ILT |
530 | ++i; |
531 | continue; | |
532 | } | |
533 | ||
534 | // Option starting with '-'. | |
535 | int dashes = 1; | |
536 | if (argv[i][1] == '-') | |
537 | { | |
538 | dashes = 2; | |
539 | if (argv[i][2] == '\0') | |
540 | { | |
541 | no_more_options = true; | |
542 | continue; | |
543 | } | |
544 | } | |
545 | ||
546 | // Look for a long option match. | |
547 | char* opt = argv[i] + dashes; | |
548 | char first = opt[0]; | |
549 | int skiparg = 0; | |
550 | char* arg = strchr(opt, '='); | |
ad2d6943 | 551 | bool argument_with_equals = arg != NULL; |
bae7f79e | 552 | if (arg != NULL) |
ad2d6943 ILT |
553 | { |
554 | *arg = '\0'; | |
555 | ++arg; | |
556 | } | |
bae7f79e ILT |
557 | else if (i + 1 < argc) |
558 | { | |
559 | arg = argv[i + 1]; | |
560 | skiparg = 1; | |
561 | } | |
562 | ||
563 | int j; | |
564 | for (j = 0; j < options_size; ++j) | |
565 | { | |
566 | if (options[j].long_option != NULL | |
567 | && (dashes == 2 | |
568 | || (options[j].dash | |
61ba1cf9 | 569 | != options::One_option::EXACTLY_TWO_DASHES)) |
bae7f79e ILT |
570 | && first == options[j].long_option[0] |
571 | && strcmp(opt, options[j].long_option) == 0) | |
572 | { | |
573 | if (options[j].special) | |
574 | i += options[j].special(argc - 1, argv + i, opt, this); | |
575 | else | |
576 | { | |
577 | if (!options[j].takes_argument()) | |
578 | { | |
ad2d6943 ILT |
579 | if (argument_with_equals) |
580 | this->usage(_("unexpected argument"), argv[i]); | |
bae7f79e ILT |
581 | arg = NULL; |
582 | skiparg = 0; | |
583 | } | |
584 | else | |
585 | { | |
586 | if (arg == NULL) | |
587 | this->usage(_("missing argument"), argv[i]); | |
588 | } | |
589 | this->apply_option(options[j], arg); | |
590 | i += skiparg + 1; | |
591 | } | |
592 | break; | |
593 | } | |
594 | } | |
595 | if (j < options_size) | |
596 | continue; | |
597 | ||
598 | // If we saw two dashes, we need to see a long option. | |
599 | if (dashes == 2) | |
600 | this->usage(_("unknown option"), argv[i]); | |
601 | ||
602 | // Look for a short option match. There may be more than one | |
603 | // short option in a given argument. | |
604 | bool done = false; | |
605 | char* s = argv[i] + 1; | |
606 | ++i; | |
607 | while (*s != '\0' && !done) | |
608 | { | |
609 | char opt = *s; | |
610 | int j; | |
611 | for (j = 0; j < options_size; ++j) | |
612 | { | |
613 | if (options[j].short_option == opt) | |
614 | { | |
615 | if (options[j].special) | |
616 | { | |
617 | // Undo the argument skip done above. | |
618 | --i; | |
619 | i += options[j].special(argc - i, argv + i, s, this); | |
620 | done = true; | |
621 | } | |
622 | else | |
623 | { | |
624 | arg = NULL; | |
625 | if (options[j].takes_argument()) | |
626 | { | |
627 | if (s[1] != '\0') | |
628 | { | |
629 | arg = s + 1; | |
630 | done = true; | |
631 | } | |
632 | else if (i < argc) | |
633 | { | |
634 | arg = argv[i]; | |
635 | ++i; | |
636 | } | |
637 | else | |
638 | this->usage(_("missing argument"), opt); | |
639 | } | |
640 | this->apply_option(options[j], arg); | |
641 | } | |
642 | break; | |
643 | } | |
644 | } | |
645 | ||
646 | if (j >= options_size) | |
647 | this->usage(_("unknown option"), *s); | |
648 | ||
649 | ++s; | |
650 | } | |
651 | } | |
61ba1cf9 | 652 | |
dbe717ef | 653 | if (this->inputs_.in_group()) |
ead1e424 ILT |
654 | { |
655 | fprintf(stderr, _("%s: missing group end"), program_name); | |
656 | this->usage(); | |
657 | } | |
658 | ||
61ba1cf9 | 659 | // FIXME: We should only do this when configured in native mode. |
ad2d6943 ILT |
660 | this->options_.add_to_search_path_with_sysroot("/lib"); |
661 | this->options_.add_to_search_path_with_sysroot("/usr/lib"); | |
662 | ||
663 | this->options_.add_sysroot(); | |
46738c9a ILT |
664 | |
665 | // Ensure options don't contradict each other and are otherwise kosher. | |
666 | this->normalize_options(); | |
667 | } | |
668 | ||
669 | // Ensure options don't contradict each other and are otherwise kosher. | |
670 | ||
671 | void | |
672 | Command_line::normalize_options() | |
673 | { | |
674 | // If the user specifies both -s and -r, convert the -s as -S. | |
675 | // -r requires us to keep externally visible symbols! | |
676 | if (this->options_.strip_all() && this->options_.is_relocatable()) | |
677 | { | |
678 | // Clears the strip_all() status, replacing it with strip_debug(). | |
679 | this->options_.set_strip_debug(); | |
680 | } | |
681 | ||
682 | // FIXME: we can/should be doing a lot more sanity checking here. | |
bae7f79e ILT |
683 | } |
684 | ||
46738c9a | 685 | |
bae7f79e ILT |
686 | // Apply a command line option. |
687 | ||
688 | void | |
61ba1cf9 ILT |
689 | Command_line::apply_option(const options::One_option& opt, |
690 | const char* arg) | |
bae7f79e ILT |
691 | { |
692 | if (arg == NULL) | |
693 | { | |
694 | if (opt.general_noarg) | |
695 | (this->options_.*(opt.general_noarg))(); | |
696 | else if (opt.dependent_noarg) | |
697 | (this->position_options_.*(opt.dependent_noarg))(); | |
698 | else | |
61ba1cf9 | 699 | gold_unreachable(); |
bae7f79e ILT |
700 | } |
701 | else | |
702 | { | |
703 | if (opt.general_arg) | |
704 | (this->options_.*(opt.general_arg))(arg); | |
705 | else if (opt.dependent_arg) | |
706 | (this->position_options_.*(opt.dependent_arg))(arg); | |
707 | else | |
61ba1cf9 | 708 | gold_unreachable(); |
bae7f79e ILT |
709 | } |
710 | } | |
711 | ||
ead1e424 ILT |
712 | // Add an input file or library. |
713 | ||
714 | void | |
715 | Command_line::add_file(const char* name, bool is_lib) | |
716 | { | |
51dee2fe | 717 | Input_file_argument file(name, is_lib, "", this->position_options_); |
dbe717ef | 718 | this->inputs_.add_file(file); |
ead1e424 ILT |
719 | } |
720 | ||
61ba1cf9 ILT |
721 | // Handle the -l option, which requires special treatment. |
722 | ||
723 | int | |
724 | Command_line::process_l_option(int argc, char** argv, char* arg) | |
725 | { | |
726 | int ret; | |
727 | const char* libname; | |
728 | if (arg[1] != '\0') | |
729 | { | |
730 | ret = 1; | |
731 | libname = arg + 1; | |
732 | } | |
733 | else if (argc > 1) | |
734 | { | |
735 | ret = 2; | |
736 | libname = argv[argc + 1]; | |
737 | } | |
738 | else | |
739 | this->usage(_("missing argument"), arg); | |
740 | ||
ead1e424 | 741 | this->add_file(libname, true); |
61ba1cf9 ILT |
742 | |
743 | return ret; | |
744 | } | |
745 | ||
ead1e424 ILT |
746 | // Handle the --start-group option. |
747 | ||
748 | void | |
749 | Command_line::start_group(const char* arg) | |
750 | { | |
dbe717ef | 751 | if (this->inputs_.in_group()) |
ead1e424 | 752 | this->usage(_("may not nest groups"), arg); |
dbe717ef | 753 | this->inputs_.start_group(); |
ead1e424 ILT |
754 | } |
755 | ||
756 | // Handle the --end-group option. | |
757 | ||
758 | void | |
759 | Command_line::end_group(const char* arg) | |
760 | { | |
dbe717ef | 761 | if (!this->inputs_.in_group()) |
ead1e424 | 762 | this->usage(_("group end without group start"), arg); |
dbe717ef | 763 | this->inputs_.end_group(); |
ead1e424 ILT |
764 | } |
765 | ||
bae7f79e ILT |
766 | // Report a usage error. */ |
767 | ||
768 | void | |
61ba1cf9 | 769 | Command_line::usage() |
bae7f79e ILT |
770 | { |
771 | fprintf(stderr, | |
772 | _("%s: use the --help option for usage information\n"), | |
61ba1cf9 | 773 | program_name); |
cd4662c7 | 774 | ::exit(1); |
bae7f79e ILT |
775 | } |
776 | ||
777 | void | |
61ba1cf9 | 778 | Command_line::usage(const char* msg, const char *opt) |
bae7f79e ILT |
779 | { |
780 | fprintf(stderr, | |
781 | _("%s: %s: %s\n"), | |
61ba1cf9 | 782 | program_name, opt, msg); |
bae7f79e ILT |
783 | this->usage(); |
784 | } | |
785 | ||
786 | void | |
61ba1cf9 | 787 | Command_line::usage(const char* msg, char opt) |
bae7f79e ILT |
788 | { |
789 | fprintf(stderr, | |
790 | _("%s: -%c: %s\n"), | |
61ba1cf9 | 791 | program_name, opt, msg); |
bae7f79e ILT |
792 | this->usage(); |
793 | } | |
61ba1cf9 ILT |
794 | |
795 | } // End namespace gold. |