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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gold/] [options.cc] - Blame information for rev 174

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1 27 khays
// options.c -- handle command line options for gold
2
 
3 159 khays
// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
4 27 khays
// 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
 
23
#include "gold.h"
24
 
25
#include <cerrno>
26
#include <cstdlib>
27
#include <cstring>
28
#include <fstream>
29
#include <vector>
30
#include <iostream>
31
#include <sys/stat.h>
32
#include "filenames.h"
33
#include "libiberty.h"
34
#include "demangle.h"
35
#include "../bfd/bfdver.h"
36
 
37
#include "debug.h"
38
#include "script.h"
39
#include "target-select.h"
40
#include "options.h"
41
#include "plugin.h"
42
 
43
namespace gold
44
{
45
 
46
General_options
47
Position_dependent_options::default_options_;
48
 
49
namespace options
50
{
51
 
52
// This flag is TRUE if we should register the command-line options as they
53
// are constructed.  It is set after construction of the options within
54
// class Position_dependent_options.
55
static bool ready_to_register = false;
56
 
57
// This global variable is set up as General_options is constructed.
58
static std::vector<const One_option*> registered_options;
59
 
60
// These are set up at the same time -- the variables that accept one
61
// dash, two, or require -z.  A single variable may be in more than
62
// one of these data structures.
63
typedef Unordered_map<std::string, One_option*> Option_map;
64
static Option_map* long_options = NULL;
65
static One_option* short_options[128];
66
 
67
void
68
One_option::register_option()
69
{
70
  if (!ready_to_register)
71
    return;
72
 
73
  registered_options.push_back(this);
74
 
75
  // We can't make long_options a static Option_map because we can't
76
  // guarantee that will be initialized before register_option() is
77
  // first called.
78
  if (long_options == NULL)
79
    long_options = new Option_map;
80
 
81
  // TWO_DASHES means that two dashes are preferred, but one is ok too.
82
  if (!this->longname.empty())
83
    (*long_options)[this->longname] = this;
84
 
85
  const int shortname_as_int = static_cast<int>(this->shortname);
86
  gold_assert(shortname_as_int >= 0 && shortname_as_int < 128);
87
  if (this->shortname != '\0')
88
    {
89
      gold_assert(short_options[shortname_as_int] == NULL);
90
      short_options[shortname_as_int] = this;
91
    }
92
}
93
 
94
void
95
One_option::print() const
96
{
97
  bool comma = false;
98
  printf("  ");
99
  int len = 2;
100
  if (this->shortname != '\0')
101
    {
102
      len += printf("-%c", this->shortname);
103
      if (this->helparg)
104
        {
105
          // -z takes long-names only.
106
          gold_assert(this->dashes != DASH_Z);
107
          len += printf(" %s", gettext(this->helparg));
108
        }
109
      comma = true;
110
    }
111
  if (!this->longname.empty()
112
      && !(this->longname[0] == this->shortname
113
           && this->longname[1] == '\0'))
114
    {
115
      if (comma)
116
        len += printf(", ");
117
      switch (this->dashes)
118
        {
119
        case options::ONE_DASH: case options::EXACTLY_ONE_DASH:
120
          len += printf("-");
121
          break;
122
        case options::TWO_DASHES: case options::EXACTLY_TWO_DASHES:
123
          len += printf("--");
124
          break;
125
        case options::DASH_Z:
126
          len += printf("-z ");
127
          break;
128
        default:
129
          gold_unreachable();
130
        }
131
      len += printf("%s", this->longname.c_str());
132
      if (this->helparg)
133
        {
134
          // For most options, we print "--frob FOO".  But for -z
135
          // we print "-z frob=FOO".
136
          len += printf("%c%s", this->dashes == options::DASH_Z ? '=' : ' ',
137
                        gettext(this->helparg));
138
        }
139
    }
140
 
141
  if (len >= 30)
142
    {
143
      printf("\n");
144
      len = 0;
145
    }
146
  for (; len < 30; ++len)
147
    std::putchar(' ');
148
 
149
  // TODO: if we're boolean, add " (default)" when appropriate.
150
  printf("%s\n", gettext(this->helpstring));
151
}
152
 
153
void
154
help()
155
{
156
  printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name);
157
 
158
  std::vector<const One_option*>::const_iterator it;
159
  for (it = registered_options.begin(); it != registered_options.end(); ++it)
160
    (*it)->print();
161
 
162
  // config.guess and libtool.m4 look in ld --help output for the
163
  // string "supported targets".
164
  printf(_("%s: supported targets:"), gold::program_name);
165
  std::vector<const char*> supported_names;
166
  gold::supported_target_names(&supported_names);
167
  for (std::vector<const char*>::const_iterator p = supported_names.begin();
168
       p != supported_names.end();
169
       ++p)
170
    printf(" %s", *p);
171
  printf("\n");
172
 
173 159 khays
  printf(_("%s: supported emulations:"), gold::program_name);
174
  supported_names.clear();
175
  gold::supported_emulation_names(&supported_names);
176
  for (std::vector<const char*>::const_iterator p = supported_names.begin();
177
       p != supported_names.end();
178
       ++p)
179
    printf(" %s", *p);
180
  printf("\n");
181
 
182 27 khays
  // REPORT_BUGS_TO is defined in bfd/bfdver.h.
183
  const char* report = REPORT_BUGS_TO;
184
  if (*report != '\0')
185
    printf(_("Report bugs to %s\n"), report);
186
}
187
 
188
// For bool, arg will be NULL (boolean options take no argument);
189
// we always just set to true.
190
void
191
parse_bool(const char*, const char*, bool* retval)
192
{
193
  *retval = true;
194
}
195
 
196
void
197
parse_uint(const char* option_name, const char* arg, int* retval)
198
{
199
  char* endptr;
200
  *retval = strtol(arg, &endptr, 0);
201 163 khays
  if (*endptr != '\0' || *retval < 0)
202 27 khays
    gold_fatal(_("%s: invalid option value (expected an integer): %s"),
203
               option_name, arg);
204
}
205
 
206
void
207
parse_int(const char* option_name, const char* arg, int* retval)
208
{
209
  char* endptr;
210
  *retval = strtol(arg, &endptr, 0);
211
  if (*endptr != '\0')
212
    gold_fatal(_("%s: invalid option value (expected an integer): %s"),
213
               option_name, arg);
214
}
215
 
216
void
217
parse_uint64(const char* option_name, const char* arg, uint64_t* retval)
218
{
219
  char* endptr;
220
  *retval = strtoull(arg, &endptr, 0);
221
  if (*endptr != '\0')
222
    gold_fatal(_("%s: invalid option value (expected an integer): %s"),
223
               option_name, arg);
224
}
225
 
226
void
227
parse_double(const char* option_name, const char* arg, double* retval)
228
{
229
  char* endptr;
230
  *retval = strtod(arg, &endptr);
231
  if (*endptr != '\0')
232
    gold_fatal(_("%s: invalid option value "
233
                 "(expected a floating point number): %s"),
234
               option_name, arg);
235
}
236
 
237
void
238 159 khays
parse_percent(const char* option_name, const char* arg, double* retval)
239
{
240
  char* endptr;
241
  *retval = strtod(arg, &endptr) / 100.0;
242
  if (*endptr != '\0')
243
    gold_fatal(_("%s: invalid option value "
244
                 "(expected a floating point number): %s"),
245
               option_name, arg);
246
}
247
 
248
void
249 27 khays
parse_string(const char* option_name, const char* arg, const char** retval)
250
{
251
  if (*arg == '\0')
252
    gold_fatal(_("%s: must take a non-empty argument"), option_name);
253
  *retval = arg;
254
}
255
 
256
void
257
parse_optional_string(const char*, const char* arg, const char** retval)
258
{
259
  *retval = arg;
260
}
261
 
262
void
263
parse_dirlist(const char*, const char* arg, Dir_list* retval)
264
{
265
  retval->push_back(Search_directory(arg, false));
266
}
267
 
268
void
269
parse_set(const char*, const char* arg, String_set* retval)
270
{
271
  retval->insert(std::string(arg));
272
}
273
 
274
void
275
parse_choices(const char* option_name, const char* arg, const char** retval,
276
              const char* choices[], int num_choices)
277
{
278
  for (int i = 0; i < num_choices; i++)
279
    if (strcmp(choices[i], arg) == 0)
280
      {
281
        *retval = arg;
282
        return;
283
      }
284
 
285
  // If we get here, the user did not enter a valid choice, so we die.
286
  std::string choices_list;
287
  for (int i = 0; i < num_choices; i++)
288
    {
289
      choices_list += choices[i];
290
      if (i != num_choices - 1)
291
        choices_list += ", ";
292
    }
293
  gold_fatal(_("%s: must take one of the following arguments: %s"),
294
             option_name, choices_list.c_str());
295
}
296
 
297
} // End namespace options.
298
 
299
// Define the handler for "special" options (set via DEFINE_special).
300
 
301
void
302
General_options::parse_help(const char*, const char*, Command_line*)
303
{
304
  options::help();
305
  ::exit(EXIT_SUCCESS);
306
}
307
 
308
void
309
General_options::parse_version(const char* opt, const char*, Command_line*)
310
{
311
  bool print_short = (opt[0] == '-' && opt[1] == 'v');
312
  gold::print_version(print_short);
313
  this->printed_version_ = true;
314
  if (!print_short)
315
    ::exit(EXIT_SUCCESS);
316
}
317
 
318
void
319
General_options::parse_V(const char*, const char*, Command_line*)
320
{
321
  gold::print_version(true);
322
  this->printed_version_ = true;
323 159 khays
 
324 27 khays
  printf(_("  Supported targets:\n"));
325
  std::vector<const char*> supported_names;
326
  gold::supported_target_names(&supported_names);
327
  for (std::vector<const char*>::const_iterator p = supported_names.begin();
328
       p != supported_names.end();
329
       ++p)
330
    printf("   %s\n", *p);
331 159 khays
 
332
  printf(_("  Supported emulations:\n"));
333
  supported_names.clear();
334
  gold::supported_emulation_names(&supported_names);
335
  for (std::vector<const char*>::const_iterator p = supported_names.begin();
336
       p != supported_names.end();
337
       ++p)
338
    printf("   %s\n", *p);
339 27 khays
}
340
 
341
void
342
General_options::parse_defsym(const char*, const char* arg,
343
                              Command_line* cmdline)
344
{
345
  cmdline->script_options().define_symbol(arg);
346
}
347
 
348
void
349
General_options::parse_incremental(const char*, const char*,
350
                                   Command_line*)
351
{
352
  this->incremental_mode_ = INCREMENTAL_AUTO;
353
}
354
 
355
void
356
General_options::parse_no_incremental(const char*, const char*,
357
                                      Command_line*)
358
{
359
  this->incremental_mode_ = INCREMENTAL_OFF;
360
}
361
 
362
void
363
General_options::parse_incremental_full(const char*, const char*,
364
                                        Command_line*)
365
{
366
  this->incremental_mode_ = INCREMENTAL_FULL;
367
}
368
 
369
void
370
General_options::parse_incremental_update(const char*, const char*,
371
                                          Command_line*)
372
{
373
  this->incremental_mode_ = INCREMENTAL_UPDATE;
374
}
375
 
376
void
377
General_options::parse_incremental_changed(const char*, const char*,
378
                                           Command_line*)
379
{
380
  this->implicit_incremental_ = true;
381
  this->incremental_disposition_ = INCREMENTAL_CHANGED;
382
}
383
 
384
void
385
General_options::parse_incremental_unchanged(const char*, const char*,
386
                                             Command_line*)
387
{
388
  this->implicit_incremental_ = true;
389
  this->incremental_disposition_ = INCREMENTAL_UNCHANGED;
390
}
391
 
392
void
393
General_options::parse_incremental_unknown(const char*, const char*,
394
                                           Command_line*)
395
{
396
  this->implicit_incremental_ = true;
397
  this->incremental_disposition_ = INCREMENTAL_CHECK;
398
}
399
 
400
void
401 159 khays
General_options::parse_incremental_startup_unchanged(const char*, const char*,
402
                                                     Command_line*)
403
{
404
  this->implicit_incremental_ = true;
405
  this->incremental_startup_disposition_ = INCREMENTAL_UNCHANGED;
406
}
407
 
408
void
409 27 khays
General_options::parse_library(const char*, const char* arg,
410
                               Command_line* cmdline)
411
{
412
  Input_file_argument::Input_file_type type;
413
  const char* name;
414
  if (arg[0] == ':')
415
    {
416
      type = Input_file_argument::INPUT_FILE_TYPE_SEARCHED_FILE;
417
      name = arg + 1;
418
    }
419
  else
420
    {
421
      type = Input_file_argument::INPUT_FILE_TYPE_LIBRARY;
422
      name = arg;
423
    }
424
  Input_file_argument file(name, type, "", false, *this);
425
  cmdline->inputs().add_file(file);
426
}
427
 
428
#ifdef ENABLE_PLUGINS
429
void
430
General_options::parse_plugin(const char*, const char* arg,
431
                              Command_line*)
432
{
433
  this->add_plugin(arg);
434
}
435
 
436
// Parse --plugin-opt.
437
 
438
void
439
General_options::parse_plugin_opt(const char*, const char* arg,
440
                                  Command_line*)
441
{
442
  this->add_plugin_option(arg);
443
}
444
#endif // ENABLE_PLUGINS
445
 
446
void
447
General_options::parse_R(const char* option, const char* arg,
448
                         Command_line* cmdline)
449
{
450
  struct stat s;
451
  if (::stat(arg, &s) != 0 || S_ISDIR(s.st_mode))
452
    this->add_to_rpath(arg);
453
  else
454
    this->parse_just_symbols(option, arg, cmdline);
455
}
456
 
457
void
458
General_options::parse_just_symbols(const char*, const char* arg,
459
                                    Command_line* cmdline)
460
{
461
  Input_file_argument file(arg, Input_file_argument::INPUT_FILE_TYPE_FILE,
462
                           "", true, *this);
463
  cmdline->inputs().add_file(file);
464
}
465
 
466
// Handle --section-start.
467
 
468
void
469
General_options::parse_section_start(const char*, const char* arg,
470
                                     Command_line*)
471
{
472
  const char* eq = strchr(arg, '=');
473
  if (eq == NULL)
474
    {
475
      gold_error(_("invalid argument to --section-start; "
476
                   "must be SECTION=ADDRESS"));
477
      return;
478
    }
479
 
480
  std::string section_name(arg, eq - arg);
481
 
482
  ++eq;
483
  const char* val_start = eq;
484
  if (eq[0] == '0' && (eq[1] == 'x' || eq[1] == 'X'))
485
    eq += 2;
486
  if (*eq == '\0')
487
    {
488
      gold_error(_("--section-start address missing"));
489
      return;
490
    }
491
  uint64_t addr = 0;
492
  hex_init();
493
  for (; *eq != '\0'; ++eq)
494
    {
495
      if (!hex_p(*eq))
496
        {
497
          gold_error(_("--section-start argument %s is not a valid hex number"),
498
                     val_start);
499
          return;
500
        }
501
      addr <<= 4;
502
      addr += hex_value(*eq);
503
    }
504
 
505
  this->section_starts_[section_name] = addr;
506
}
507
 
508
// Look up a --section-start value.
509
 
510
bool
511
General_options::section_start(const char* secname, uint64_t* paddr) const
512
{
513
  if (this->section_starts_.empty())
514
    return false;
515
  std::map<std::string, uint64_t>::const_iterator p =
516
    this->section_starts_.find(secname);
517
  if (p == this->section_starts_.end())
518
    return false;
519
  *paddr = p->second;
520
  return true;
521
}
522
 
523
void
524
General_options::parse_static(const char*, const char*, Command_line*)
525
{
526
  this->set_static(true);
527
}
528
 
529
void
530
General_options::parse_script(const char*, const char* arg,
531
                              Command_line* cmdline)
532
{
533
  if (!read_commandline_script(arg, cmdline))
534
    gold::gold_fatal(_("unable to parse script file %s"), arg);
535
}
536
 
537
void
538
General_options::parse_version_script(const char*, const char* arg,
539
                                      Command_line* cmdline)
540
{
541
  if (!read_version_script(arg, cmdline))
542
    gold::gold_fatal(_("unable to parse version script file %s"), arg);
543
}
544
 
545
void
546
General_options::parse_dynamic_list(const char*, const char* arg,
547
                                    Command_line* cmdline)
548
{
549
  if (!read_dynamic_list(arg, cmdline, &this->dynamic_list_))
550
    gold::gold_fatal(_("unable to parse dynamic-list script file %s"), arg);
551
}
552
 
553
void
554
General_options::parse_start_group(const char*, const char*,
555
                                   Command_line* cmdline)
556
{
557
  cmdline->inputs().start_group();
558
}
559
 
560
void
561
General_options::parse_end_group(const char*, const char*,
562
                                 Command_line* cmdline)
563
{
564
  cmdline->inputs().end_group();
565
}
566
 
567
void
568
General_options::parse_start_lib(const char*, const char*,
569
                                 Command_line* cmdline)
570
{
571
  cmdline->inputs().start_lib(cmdline->position_dependent_options());
572
}
573
 
574
void
575
General_options::parse_end_lib(const char*, const char*,
576
                               Command_line* cmdline)
577
{
578
  cmdline->inputs().end_lib();
579
}
580
 
581
// The function add_excluded_libs() in ld/ldlang.c of GNU ld breaks up a list
582
// of names separated by commas or colons and puts them in a linked list.
583
// We implement the same parsing of names here but store names in an unordered
584
// map to speed up searching of names.
585
 
586
void
587
General_options::parse_exclude_libs(const char*, const char* arg,
588
                                    Command_line*)
589
{
590
  const char* p = arg;
591
 
592
  while (*p != '\0')
593
    {
594
      size_t length = strcspn(p, ",:");
595
      this->excluded_libs_.insert(std::string(p, length));
596
      p += (p[length] ? length + 1 : length);
597
    }
598
}
599
 
600
// The checking logic is based on the function check_excluded_libs() in
601
// ld/ldlang.c of GNU ld but our implementation is different because we use
602
// an unordered map instead of a linked list, which is what GNU ld uses.  GNU
603
// ld searches sequentially in the excluded libs list.  For a given archive,
604
// a match is found if the archive's name matches exactly one of the list
605
// entry or if the archive's name is of the form FOO.a and FOO matches exactly
606
// one of the list entry.  An entry "ALL" in the list is considered as a
607
// wild-card and matches any given name.
608
 
609
bool
610
General_options::check_excluded_libs(const std::string &name) const
611
{
612
  Unordered_set<std::string>::const_iterator p;
613
 
614
  // Exit early for the most common case.
615
  if (excluded_libs_.empty())
616
    return false;
617
 
618
  // If we see "ALL", all archives are excluded from automatic export.
619
  p = excluded_libs_.find(std::string("ALL"));
620
  if (p != excluded_libs_.end())
621
    return true;
622
 
623
  // First strip off any directories in name.
624
  const char* basename = lbasename(name.c_str());
625
 
626
  // Try finding an exact match.
627
  p = excluded_libs_.find(std::string(basename));
628
  if (p != excluded_libs_.end())
629
    return true;
630
 
631
  // Try matching NAME without ".a" at the end.
632
  size_t length = strlen(basename);
633
  if ((length >= 2)
634
      && (basename[length - 2] == '.')
635
      && (basename[length - 1] == 'a'))
636
    {
637
      p = excluded_libs_.find(std::string(basename, length - 2));
638
      if (p != excluded_libs_.end())
639
        return true;
640
    }
641
 
642
  return false;
643
}
644
 
645
// Recognize input and output target names.  The GNU linker accepts
646
// these with --format and --oformat.  This code is intended to be
647
// minimally compatible.  In practice for an ELF target this would be
648
// the same target as the input files; that name always start with
649
// "elf".  Non-ELF targets would be "srec", "symbolsrec", "tekhex",
650
// "binary", "ihex".
651
 
652
General_options::Object_format
653
General_options::string_to_object_format(const char* arg)
654
{
655
  if (strncmp(arg, "elf", 3) == 0)
656
    return gold::General_options::OBJECT_FORMAT_ELF;
657
  else if (strcmp(arg, "binary") == 0)
658
    return gold::General_options::OBJECT_FORMAT_BINARY;
659
  else
660
    {
661
      gold::gold_error(_("format '%s' not supported; treating as elf "
662
                         "(supported formats: elf, binary)"),
663
                       arg);
664
      return gold::General_options::OBJECT_FORMAT_ELF;
665
    }
666
}
667
 
668
void
669
General_options::parse_fix_v4bx(const char*, const char*,
670
                                Command_line*)
671
{
672
  this->fix_v4bx_ = FIX_V4BX_REPLACE;
673
}
674
 
675
void
676
General_options::parse_fix_v4bx_interworking(const char*, const char*,
677
                                             Command_line*)
678
{
679
  this->fix_v4bx_ = FIX_V4BX_INTERWORKING;
680
}
681
 
682
void
683
General_options::parse_EB(const char*, const char*, Command_line*)
684
{
685
  this->endianness_ = ENDIANNESS_BIG;
686
}
687
 
688
void
689
General_options::parse_EL(const char*, const char*, Command_line*)
690
{
691
  this->endianness_ = ENDIANNESS_LITTLE;
692
}
693
 
694
} // End namespace gold.
695
 
696
namespace
697
{
698
 
699
void
700
usage()
701
{
702
  fprintf(stderr,
703
          _("%s: use the --help option for usage information\n"),
704
          gold::program_name);
705
  ::exit(EXIT_FAILURE);
706
}
707
 
708
void
709
usage(const char* msg, const char* opt)
710
{
711
  fprintf(stderr,
712
          _("%s: %s: %s\n"),
713
          gold::program_name, opt, msg);
714
  usage();
715
}
716
 
717
// If the default sysroot is relocatable, try relocating it based on
718
// the prefix FROM.
719
 
720
static char*
721
get_relative_sysroot(const char* from)
722
{
723
  char* path = make_relative_prefix(gold::program_name, from,
724
                                    TARGET_SYSTEM_ROOT);
725
  if (path != NULL)
726
    {
727
      struct stat s;
728
      if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode))
729
        return path;
730
      free(path);
731
    }
732
 
733
  return NULL;
734
}
735
 
736
// Return the default sysroot.  This is set by the --with-sysroot
737
// option to configure.  Note we do not free the return value of
738
// get_relative_sysroot, which is a small memory leak, but is
739
// necessary since we store this pointer directly in General_options.
740
 
741
static const char*
742
get_default_sysroot()
743
{
744
  const char* sysroot = TARGET_SYSTEM_ROOT;
745
  if (*sysroot == '\0')
746
    return NULL;
747
 
748
  if (TARGET_SYSTEM_ROOT_RELOCATABLE)
749
    {
750
      char* path = get_relative_sysroot(BINDIR);
751
      if (path == NULL)
752
        path = get_relative_sysroot(TOOLBINDIR);
753
      if (path != NULL)
754
        return path;
755
    }
756
 
757
  return sysroot;
758
}
759
 
760
// Parse a long option.  Such options have the form
761
// <-|--><option>[=arg].  If "=arg" is not present but the option
762
// takes an argument, the next word is taken to the be the argument.
763
// If equals_only is set, then only the <option>=<arg> form is
764
// accepted, not the <option><space><arg> form.  Returns a One_option
765
// struct or NULL if argv[i] cannot be parsed as a long option.  In
766
// the not-NULL case, *arg is set to the option's argument (NULL if
767
// the option takes no argument), and *i is advanced past this option.
768
// NOTE: it is safe for argv and arg to point to the same place.
769
gold::options::One_option*
770
parse_long_option(int argc, const char** argv, bool equals_only,
771
                  const char** arg, int* i)
772
{
773
  const char* const this_argv = argv[*i];
774
 
775
  const char* equals = strchr(this_argv, '=');
776
  const char* option_start = this_argv + strspn(this_argv, "-");
777
  std::string option(option_start,
778
                     equals ? equals - option_start : strlen(option_start));
779
 
780
  gold::options::Option_map::iterator it
781
      = gold::options::long_options->find(option);
782
  if (it == gold::options::long_options->end())
783
    return NULL;
784
 
785
  gold::options::One_option* retval = it->second;
786
 
787
  // If the dash-count doesn't match, we fail.
788
  if (this_argv[0] != '-')  // no dashes at all: had better be "-z <longopt>"
789
    {
790
      if (retval->dashes != gold::options::DASH_Z)
791
        return NULL;
792
    }
793
  else if (this_argv[1] != '-')   // one dash
794
    {
795
      if (retval->dashes != gold::options::ONE_DASH
796
          && retval->dashes != gold::options::EXACTLY_ONE_DASH
797
          && retval->dashes != gold::options::TWO_DASHES)
798
        return NULL;
799
    }
800
  else                            // two dashes (or more!)
801
    {
802
      if (retval->dashes != gold::options::TWO_DASHES
803
          && retval->dashes != gold::options::EXACTLY_TWO_DASHES
804
          && retval->dashes != gold::options::ONE_DASH)
805
        return NULL;
806
    }
807
 
808
  // Now that we know the option is good (or else bad in a way that
809
  // will cause us to die), increment i to point past this argv.
810
  ++(*i);
811
 
812
  // Figure out the option's argument, if any.
813
  if (!retval->takes_argument())
814
    {
815
      if (equals)
816
        usage(_("unexpected argument"), this_argv);
817
      else
818
        *arg = NULL;
819
    }
820
  else
821
    {
822
      if (equals)
823
        *arg = equals + 1;
824
      else if (retval->takes_optional_argument())
825
        *arg = retval->default_value;
826
      else if (*i < argc && !equals_only)
827
        *arg = argv[(*i)++];
828
      else
829
        usage(_("missing argument"), this_argv);
830
    }
831
 
832
  return retval;
833
}
834
 
835
// Parse a short option.  Such options have the form -<option>[arg].
836
// If "arg" is not present but the option takes an argument, the next
837
// word is taken to the be the argument.  If the option does not take
838
// an argument, it may be followed by another short option.  Returns a
839
// One_option struct or NULL if argv[i] cannot be parsed as a short
840
// option.  In the not-NULL case, *arg is set to the option's argument
841
// (NULL if the option takes no argument), and *i is advanced past
842
// this option.  This function keeps *i the same if we parsed a short
843
// option that does not take an argument, that looks to be followed by
844
// another short option in the same word.
845
gold::options::One_option*
846
parse_short_option(int argc, const char** argv, int pos_in_argv_i,
847
                   const char** arg, int* i)
848
{
849
  const char* const this_argv = argv[*i];
850
 
851
  if (this_argv[0] != '-')
852
    return NULL;
853
 
854
  // We handle -z as a special case.
855
  static gold::options::One_option dash_z("", gold::options::DASH_Z,
856
                                          'z', "", NULL, "Z-OPTION", false,
857
                                          NULL);
858
  gold::options::One_option* retval = NULL;
859
  if (this_argv[pos_in_argv_i] == 'z')
860
    retval = &dash_z;
861
  else
862
    {
863
      const int char_as_int = static_cast<int>(this_argv[pos_in_argv_i]);
864
      if (char_as_int > 0 && char_as_int < 128)
865
        retval = gold::options::short_options[char_as_int];
866
    }
867
 
868
  if (retval == NULL)
869
    return NULL;
870
 
871
  // Figure out the option's argument, if any.
872
  if (!retval->takes_argument())
873
    {
874
      *arg = NULL;
875
      // We only advance past this argument if it's the only one in argv.
876
      if (this_argv[pos_in_argv_i + 1] == '\0')
877
        ++(*i);
878
    }
879
  else
880
    {
881
      // If we take an argument, we'll eat up this entire argv entry.
882
      ++(*i);
883
      if (this_argv[pos_in_argv_i + 1] != '\0')
884
        *arg = this_argv + pos_in_argv_i + 1;
885
      else if (retval->takes_optional_argument())
886
        *arg = retval->default_value;
887
      else if (*i < argc)
888
        *arg = argv[(*i)++];
889
      else
890
        usage(_("missing argument"), this_argv);
891
    }
892
 
893
  // If we're a -z option, we need to parse our argument as a
894
  // long-option, e.g. "-z stacksize=8192".
895
  if (retval == &dash_z)
896
    {
897
      int dummy_i = 0;
898
      const char* dash_z_arg = *arg;
899
      retval = parse_long_option(1, arg, true, arg, &dummy_i);
900
      if (retval == NULL)
901
        usage(_("unknown -z option"), dash_z_arg);
902
    }
903
 
904
  return retval;
905
}
906
 
907
} // End anonymous namespace.
908
 
909
namespace gold
910
{
911
 
912
General_options::General_options()
913
  : printed_version_(false),
914
    execstack_status_(EXECSTACK_FROM_INPUT),
915
    icf_status_(ICF_NONE),
916
    static_(false),
917
    do_demangle_(false),
918
    plugins_(NULL),
919
    dynamic_list_(),
920
    incremental_mode_(INCREMENTAL_OFF),
921 159 khays
    incremental_disposition_(INCREMENTAL_STARTUP),
922
    incremental_startup_disposition_(INCREMENTAL_CHECK),
923 27 khays
    implicit_incremental_(false),
924
    excluded_libs_(),
925
    symbols_to_retain_(),
926
    section_starts_(),
927
    fix_v4bx_(FIX_V4BX_NONE),
928
    endianness_(ENDIANNESS_NOT_SET)
929
{
930
  // Turn off option registration once construction is complete.
931
  gold::options::ready_to_register = false;
932
}
933
 
934
General_options::Object_format
935
General_options::format_enum() const
936
{
937
  return General_options::string_to_object_format(this->format());
938
}
939
 
940
General_options::Object_format
941
General_options::oformat_enum() const
942
{
943
  return General_options::string_to_object_format(this->oformat());
944
}
945
 
946
// Add the sysroot, if any, to the search paths.
947
 
948
void
949
General_options::add_sysroot()
950
{
951
  if (this->sysroot() == NULL || this->sysroot()[0] == '\0')
952
    {
953
      this->set_sysroot(get_default_sysroot());
954
      if (this->sysroot() == NULL || this->sysroot()[0] == '\0')
955
        return;
956
    }
957
 
958
  char* canonical_sysroot = lrealpath(this->sysroot());
959
 
960
  for (Dir_list::iterator p = this->library_path_.value.begin();
961
       p != this->library_path_.value.end();
962
       ++p)
963
    p->add_sysroot(this->sysroot(), canonical_sysroot);
964
 
965
  free(canonical_sysroot);
966
}
967
 
968
// Return whether FILENAME is in a system directory.
969
 
970
bool
971
General_options::is_in_system_directory(const std::string& filename) const
972
{
973
  for (Dir_list::const_iterator p = this->library_path_.value.begin();
974
       p != this->library_path_.value.end();
975
       ++p)
976
    {
977
      // We use a straight string comparison rather than calling
978
      // FILENAME_CMP because we are only interested in the cases
979
      // where we found the file in a system directory, which means
980
      // that we used the directory name as a prefix for a -L search.
981
      if (p->is_system_directory()
982
          && filename.compare(0, p->name().size(), p->name()) == 0)
983
        return true;
984
    }
985
  return false;
986
}
987
 
988
// Add a plugin to the list of plugins.
989
 
990
void
991
General_options::add_plugin(const char* filename)
992
{
993
  if (this->plugins_ == NULL)
994
    this->plugins_ = new Plugin_manager(*this);
995
  this->plugins_->add_plugin(filename);
996
}
997
 
998
// Add a plugin option to a plugin.
999
 
1000
void
1001
General_options::add_plugin_option(const char* arg)
1002
{
1003
  if (this->plugins_ == NULL)
1004
    gold_fatal("--plugin-opt requires --plugin.");
1005
  this->plugins_->add_plugin_option(arg);
1006
}
1007
 
1008
// Set up variables and other state that isn't set up automatically by
1009
// the parse routine, and ensure options don't contradict each other
1010
// and are otherwise kosher.
1011
 
1012
void
1013
General_options::finalize()
1014
{
1015
  // Normalize the strip modifiers.  They have a total order:
1016
  // strip_all > strip_debug > strip_non_line > strip_debug_gdb.
1017
  // If one is true, set all beneath it to true as well.
1018
  if (this->strip_all())
1019
    this->set_strip_debug(true);
1020
  if (this->strip_debug())
1021
    this->set_strip_debug_non_line(true);
1022
  if (this->strip_debug_non_line())
1023
    this->set_strip_debug_gdb(true);
1024
 
1025
  if (this->Bshareable())
1026
    this->set_shared(true);
1027
 
1028
  // If the user specifies both -s and -r, convert the -s to -S.
1029
  // -r requires us to keep externally visible symbols!
1030
  if (this->strip_all() && this->relocatable())
1031
    {
1032
      this->set_strip_all(false);
1033
      gold_assert(this->strip_debug());
1034
    }
1035
 
1036
  // For us, -dc and -dp are synonyms for --define-common.
1037
  if (this->dc())
1038
    this->set_define_common(true);
1039
  if (this->dp())
1040
    this->set_define_common(true);
1041
 
1042
  // We also set --define-common if we're not relocatable, as long as
1043
  // the user didn't explicitly ask for something different.
1044
  if (!this->user_set_define_common())
1045
    this->set_define_common(!this->relocatable());
1046
 
1047
  // execstack_status_ is a three-state variable; update it based on
1048
  // -z [no]execstack.
1049
  if (this->execstack())
1050
    this->set_execstack_status(EXECSTACK_YES);
1051
  else if (this->noexecstack())
1052
    this->set_execstack_status(EXECSTACK_NO);
1053
 
1054
  // icf_status_ is a three-state variable; update it based on the
1055
  // value of this->icf().
1056
  if (strcmp(this->icf(), "none") == 0)
1057
    this->set_icf_status(ICF_NONE);
1058
  else if (strcmp(this->icf(), "safe") == 0)
1059
    this->set_icf_status(ICF_SAFE);
1060
  else
1061
    this->set_icf_status(ICF_ALL);
1062
 
1063
  // Handle the optional argument for --demangle.
1064
  if (this->user_set_demangle())
1065
    {
1066
      this->set_do_demangle(true);
1067
      const char* style = this->demangle();
1068
      if (*style != '\0')
1069
        {
1070
          enum demangling_styles style_code;
1071
 
1072
          style_code = cplus_demangle_name_to_style(style);
1073
          if (style_code == unknown_demangling)
1074
            gold_fatal("unknown demangling style '%s'", style);
1075
          cplus_demangle_set_style(style_code);
1076
        }
1077
    }
1078
  else if (this->user_set_no_demangle())
1079
    this->set_do_demangle(false);
1080
  else
1081
    {
1082
      // Testing COLLECT_NO_DEMANGLE makes our default demangling
1083
      // behaviour identical to that of gcc's linker wrapper.
1084
      this->set_do_demangle(getenv("COLLECT_NO_DEMANGLE") == NULL);
1085
    }
1086
 
1087
  // -M is equivalent to "-Map -".
1088
  if (this->print_map() && !this->user_set_Map())
1089
    {
1090
      this->set_Map("-");
1091
      this->set_user_set_Map();
1092
    }
1093
 
1094
  // Using -n or -N implies -static.
1095
  if (this->nmagic() || this->omagic())
1096
    this->set_static(true);
1097
 
1098
  // If --thread_count is specified, it applies to
1099
  // --thread-count-{initial,middle,final}, though it doesn't override
1100
  // them.
1101
  if (this->thread_count() > 0 && this->thread_count_initial() == 0)
1102
    this->set_thread_count_initial(this->thread_count());
1103
  if (this->thread_count() > 0 && this->thread_count_middle() == 0)
1104
    this->set_thread_count_middle(this->thread_count());
1105
  if (this->thread_count() > 0 && this->thread_count_final() == 0)
1106
    this->set_thread_count_final(this->thread_count());
1107
 
1108
  // Let's warn if you set the thread-count but we're going to ignore it.
1109
#ifndef ENABLE_THREADS
1110
  if (this->threads())
1111
    {
1112
      gold_warning(_("ignoring --threads: "
1113
                     "%s was compiled without thread support"),
1114
                   program_name);
1115
      this->set_threads(false);
1116
    }
1117
  if (this->thread_count() > 0 || this->thread_count_initial() > 0
1118
      || this->thread_count_middle() > 0 || this->thread_count_final() > 0)
1119
    gold_warning(_("ignoring --thread-count: "
1120
                   "%s was compiled without thread support"),
1121
                 program_name);
1122
#endif
1123
 
1124 163 khays
  std::string libpath;
1125 27 khays
  if (this->user_set_Y())
1126
    {
1127 163 khays
      libpath = this->Y();
1128
      if (libpath.compare(0, 2, "P,") == 0)
1129
        libpath.erase(0, 2);
1130
    }
1131
  else if (!this->nostdlib())
1132
    {
1133
#ifndef NATIVE_LINKER
1134
#define NATIVE_LINKER 0
1135
#endif
1136
      const char* p = LIB_PATH;
1137
      if (strcmp(p, "::DEFAULT::") != 0)
1138
        libpath = p;
1139
      else if (NATIVE_LINKER
1140
               || this->user_set_sysroot()
1141
               || *TARGET_SYSTEM_ROOT != '\0')
1142
        {
1143
          this->add_to_library_path_with_sysroot("/lib");
1144
          this->add_to_library_path_with_sysroot("/usr/lib");
1145
        }
1146
      else
1147
        this->add_to_library_path_with_sysroot(TOOLLIBDIR);
1148
    }
1149 27 khays
 
1150 163 khays
  if (!libpath.empty())
1151
    {
1152 27 khays
      size_t pos = 0;
1153
      size_t next_pos;
1154
      do
1155
        {
1156 163 khays
          next_pos = libpath.find(':', pos);
1157 27 khays
          size_t len = (next_pos == std::string::npos
1158
                        ? next_pos
1159
                        : next_pos - pos);
1160
          if (len != 0)
1161 163 khays
            this->add_to_library_path_with_sysroot(libpath.substr(pos, len));
1162 27 khays
          pos = next_pos + 1;
1163
        }
1164
      while (next_pos != std::string::npos);
1165
    }
1166
 
1167
  // Parse the contents of -retain-symbols-file into a set.
1168
  if (this->retain_symbols_file())
1169
    {
1170
      std::ifstream in;
1171
      in.open(this->retain_symbols_file());
1172
      if (!in)
1173
        gold_fatal(_("unable to open -retain-symbols-file file %s: %s"),
1174
                   this->retain_symbols_file(), strerror(errno));
1175
      std::string line;
1176
      std::getline(in, line);   // this chops off the trailing \n, if any
1177
      while (in)
1178
        {
1179
          if (!line.empty() && line[line.length() - 1] == '\r')   // Windows
1180
            line.resize(line.length() - 1);
1181
          this->symbols_to_retain_.insert(line);
1182
          std::getline(in, line);
1183
        }
1184
    }
1185
 
1186 159 khays
  // -Bgroup implies --unresolved-symbols=report-all.
1187
  if (this->Bgroup() && !this->user_set_unresolved_symbols())
1188
    this->set_unresolved_symbols("report-all");
1189
 
1190
  // -shared implies --allow-shlib-undefined.  Currently
1191
  // ---allow-shlib-undefined controls warnings issued based on the
1192
  // -symbol table.  --unresolved-symbols controls warnings issued
1193
  // -based on relocations.
1194 27 khays
  if (this->shared() && !this->user_set_allow_shlib_undefined())
1195
    this->set_allow_shlib_undefined(true);
1196
 
1197
  // Normalize library_path() by adding the sysroot to all directories
1198
  // in the path, as appropriate.
1199
  this->add_sysroot();
1200
 
1201
  // Now that we've normalized the options, check for contradictory ones.
1202
  if (this->shared() && this->is_static())
1203
    gold_fatal(_("-shared and -static are incompatible"));
1204
  if (this->shared() && this->pie())
1205
    gold_fatal(_("-shared and -pie are incompatible"));
1206 166 khays
  if (this->pie() && this->is_static())
1207
    gold_fatal(_("-pie and -static are incompatible"));
1208 27 khays
 
1209
  if (this->shared() && this->relocatable())
1210
    gold_fatal(_("-shared and -r are incompatible"));
1211
  if (this->pie() && this->relocatable())
1212
    gold_fatal(_("-pie and -r are incompatible"));
1213
 
1214 159 khays
  if (!this->shared())
1215
    {
1216
      if (this->filter() != NULL)
1217
        gold_fatal(_("-F/--filter may not used without -shared"));
1218
      if (this->any_auxiliary())
1219
        gold_fatal(_("-f/--auxiliary may not be used without -shared"));
1220
    }
1221
 
1222 27 khays
  // TODO: implement support for -retain-symbols-file with -r, if needed.
1223
  if (this->relocatable() && this->retain_symbols_file())
1224
    gold_fatal(_("-retain-symbols-file does not yet work with -r"));
1225
 
1226
  if (this->oformat_enum() != General_options::OBJECT_FORMAT_ELF
1227
      && (this->shared()
1228
          || this->pie()
1229
          || this->relocatable()))
1230
    gold_fatal(_("binary output format not compatible "
1231
                 "with -shared or -pie or -r"));
1232
 
1233
  if (this->user_set_hash_bucket_empty_fraction()
1234
      && (this->hash_bucket_empty_fraction() < 0.0
1235
          || this->hash_bucket_empty_fraction() >= 1.0))
1236
    gold_fatal(_("--hash-bucket-empty-fraction value %g out of range "
1237
                 "[0.0, 1.0)"),
1238
               this->hash_bucket_empty_fraction());
1239
 
1240
  if (this->implicit_incremental_ && this->incremental_mode_ == INCREMENTAL_OFF)
1241
    gold_fatal(_("Options --incremental-changed, --incremental-unchanged, "
1242
                 "--incremental-unknown require the use of --incremental"));
1243
 
1244 163 khays
  // Check for options that are not compatible with incremental linking.
1245
  // Where an option can be disabled without seriously changing the semantics
1246
  // of the link, we turn the option off; otherwise, we issue a fatal error.
1247
 
1248
  if (this->incremental_mode_ != INCREMENTAL_OFF)
1249
    {
1250
      if (this->relocatable())
1251
        gold_fatal(_("incremental linking is not compatible with -r"));
1252
      if (this->emit_relocs())
1253
        gold_fatal(_("incremental linking is not compatible with "
1254
                     "--emit-relocs"));
1255
      if (this->has_plugins())
1256
        gold_fatal(_("incremental linking is not compatible with --plugin"));
1257
      if (this->gc_sections())
1258
        {
1259
          gold_warning(_("ignoring --gc-sections for an incremental link"));
1260
          this->set_gc_sections(false);
1261
        }
1262
      if (this->icf_enabled())
1263
        {
1264
          gold_warning(_("ignoring --icf for an incremental link"));
1265
          this->set_icf_status(ICF_NONE);
1266
        }
1267
      if (strcmp(this->compress_debug_sections(), "none") != 0)
1268
        {
1269
          gold_warning(_("ignoring --compress-debug-sections for an "
1270
                         "incremental link"));
1271
          this->set_compress_debug_sections("none");
1272
        }
1273
    }
1274
 
1275 27 khays
  // FIXME: we can/should be doing a lot more sanity checking here.
1276
}
1277
 
1278
// Search_directory methods.
1279
 
1280
// This is called if we have a sysroot.  Apply the sysroot if
1281
// appropriate.  Record whether the directory is in the sysroot.
1282
 
1283
void
1284
Search_directory::add_sysroot(const char* sysroot,
1285
                              const char* canonical_sysroot)
1286
{
1287
  gold_assert(*sysroot != '\0');
1288
  if (this->put_in_sysroot_)
1289
    {
1290
      if (!IS_DIR_SEPARATOR(this->name_[0])
1291
          && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1]))
1292
        this->name_ = '/' + this->name_;
1293
      this->name_ = sysroot + this->name_;
1294
      this->is_in_sysroot_ = true;
1295
    }
1296
  else
1297
    {
1298
      // Check whether this entry is in the sysroot.  To do this
1299
      // correctly, we need to use canonical names.  Otherwise we will
1300
      // get confused by the ../../.. paths that gcc tends to use.
1301
      char* canonical_name = lrealpath(this->name_.c_str());
1302
      int canonical_name_len = strlen(canonical_name);
1303
      int canonical_sysroot_len = strlen(canonical_sysroot);
1304
      if (canonical_name_len > canonical_sysroot_len
1305
          && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len]))
1306
        {
1307
          canonical_name[canonical_sysroot_len] = '\0';
1308
          if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0)
1309
            this->is_in_sysroot_ = true;
1310
        }
1311
      free(canonical_name);
1312
    }
1313
}
1314
 
1315
// Input_arguments methods.
1316
 
1317
// Add a file to the list.
1318
 
1319
Input_argument&
1320
Input_arguments::add_file(Input_file_argument& file)
1321
{
1322
  file.set_arg_serial(++this->file_count_);
1323
  if (this->in_group_)
1324
    {
1325
      gold_assert(!this->input_argument_list_.empty());
1326
      gold_assert(this->input_argument_list_.back().is_group());
1327
      return this->input_argument_list_.back().group()->add_file(file);
1328
    }
1329
  if (this->in_lib_)
1330
    {
1331
      gold_assert(!this->input_argument_list_.empty());
1332
      gold_assert(this->input_argument_list_.back().is_lib());
1333
      return this->input_argument_list_.back().lib()->add_file(file);
1334
    }
1335
  this->input_argument_list_.push_back(Input_argument(file));
1336
  return this->input_argument_list_.back();
1337
}
1338
 
1339
// Start a group.
1340
 
1341
void
1342
Input_arguments::start_group()
1343
{
1344
  if (this->in_group_)
1345
    gold_fatal(_("May not nest groups"));
1346
  if (this->in_lib_)
1347
    gold_fatal(_("may not nest groups in libraries"));
1348
  Input_file_group* group = new Input_file_group();
1349
  this->input_argument_list_.push_back(Input_argument(group));
1350
  this->in_group_ = true;
1351
}
1352
 
1353
// End a group.
1354
 
1355
void
1356
Input_arguments::end_group()
1357
{
1358
  if (!this->in_group_)
1359
    gold_fatal(_("Group end without group start"));
1360
  this->in_group_ = false;
1361
}
1362
 
1363
// Start a lib.
1364
 
1365
void
1366
Input_arguments::start_lib(const Position_dependent_options& options)
1367
{
1368
  if (this->in_lib_)
1369
    gold_fatal(_("may not nest libraries"));
1370
  if (this->in_group_)
1371
    gold_fatal(_("may not nest libraries in groups"));
1372
  Input_file_lib* lib = new Input_file_lib(options);
1373
  this->input_argument_list_.push_back(Input_argument(lib));
1374
  this->in_lib_ = true;
1375
}
1376
 
1377
// End a lib.
1378
 
1379
void
1380
Input_arguments::end_lib()
1381
{
1382
  if (!this->in_lib_)
1383
    gold_fatal(_("lib end without lib start"));
1384
  this->in_lib_ = false;
1385
}
1386
 
1387
// Command_line options.
1388
 
1389
Command_line::Command_line()
1390
{
1391
}
1392
 
1393
// Pre_options is the hook that sets the ready_to_register flag.
1394
 
1395
Command_line::Pre_options::Pre_options()
1396
{
1397
  gold::options::ready_to_register = true;
1398
}
1399
 
1400
// Process the command line options.  For process_one_option, i is the
1401
// index of argv to process next, and must be an option (that is,
1402
// start with a dash).  The return value is the index of the next
1403
// option to process (i+1 or i+2, or argc to indicate processing is
1404
// done).  no_more_options is set to true if (and when) "--" is seen
1405
// as an option.
1406
 
1407
int
1408
Command_line::process_one_option(int argc, const char** argv, int i,
1409
                                 bool* no_more_options)
1410
{
1411
  gold_assert(argv[i][0] == '-' && !(*no_more_options));
1412
 
1413
  // If we are reading "--", then just set no_more_options and return.
1414
  if (argv[i][1] == '-' && argv[i][2] == '\0')
1415
    {
1416
      *no_more_options = true;
1417
      return i + 1;
1418
    }
1419
 
1420
  int new_i = i;
1421
  options::One_option* option = NULL;
1422
  const char* arg = NULL;
1423
 
1424
  // First, try to process argv as a long option.
1425
  option = parse_long_option(argc, argv, false, &arg, &new_i);
1426
  if (option)
1427
    {
1428
      option->reader->parse_to_value(argv[i], arg, this, &this->options_);
1429
      return new_i;
1430
    }
1431
 
1432
  // Now, try to process argv as a short option.  Since several short
1433
  // options can be combined in one argv, we may have to parse a lot
1434
  // until we're done reading this argv.
1435
  int pos_in_argv_i = 1;
1436
  while (new_i == i)
1437
    {
1438
      option = parse_short_option(argc, argv, pos_in_argv_i, &arg, &new_i);
1439
      if (!option)
1440
        break;
1441
      option->reader->parse_to_value(argv[i], arg, this, &this->options_);
1442
      ++pos_in_argv_i;
1443
    }
1444
  if (option)
1445
    return new_i;
1446
 
1447
  // I guess it's neither a long option nor a short option.
1448
  usage(_("unknown option"), argv[i]);
1449
  return argc;
1450
}
1451
 
1452
 
1453
void
1454
Command_line::process(int argc, const char** argv)
1455
{
1456
  bool no_more_options = false;
1457
  int i = 0;
1458
  while (i < argc)
1459
    {
1460
      this->position_options_.copy_from_options(this->options());
1461
      if (no_more_options || argv[i][0] != '-')
1462
        {
1463
          Input_file_argument file(argv[i],
1464
                                   Input_file_argument::INPUT_FILE_TYPE_FILE,
1465
                                   "", false, this->position_options_);
1466
          this->inputs_.add_file(file);
1467
          ++i;
1468
        }
1469
      else
1470
        i = process_one_option(argc, argv, i, &no_more_options);
1471
    }
1472
 
1473
  if (this->inputs_.in_group())
1474
    {
1475
      fprintf(stderr, _("%s: missing group end\n"), program_name);
1476
      usage();
1477
    }
1478
 
1479
  // Normalize the options and ensure they don't contradict each other.
1480
  this->options_.finalize();
1481
}
1482
 
1483
// Finalize the version script options and return them.
1484
 
1485
const Version_script_info&
1486
Command_line::version_script()
1487
{
1488
  this->options_.finalize_dynamic_list();
1489
  Version_script_info* vsi = this->script_options_.version_script_info();
1490
  vsi->finalize();
1491
  return *vsi;
1492
}
1493
 
1494
} // End namespace gold.

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