1 // options.c -- handle command line options for gold
3 // Copyright 2006, 2007 Free Software Foundation, Inc.
4 // Written by Ian Lance Taylor <iant@google.com>.
6 // This file is part of gold.
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.
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.
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.
28 #include "filenames.h"
29 #include "libiberty.h"
37 // The information we keep for a single command line option.
39 struct options::One_option
41 // The single character option name, or '\0' if this is only a long
45 // The long option name, or NULL if this is only a short option.
46 const char* long_option
;
48 // Description of the option for --help output, or NULL if there is none.
51 // How to print the option name in --help output, or NULL to use the
53 const char* help_output
;
55 // Long option dash control. This is ignored if long_option is
59 // Long option normally takes one dash; two dashes are also
62 // Long option normally takes two dashes; one dash is also
65 // Long option always takes two dashes.
69 // Function for special handling, or NULL. Returns the number of
70 // arguments to skip. This will normally be at least 1, but it may
71 // be 0 if this function changes *argv. ARG points to the location
72 // in *ARGV where the option starts, which may be helpful for a
74 int (*special
)(int argc
, char** argv
, char *arg
, bool long_option
,
77 // If this is a position independent option which does not take an
78 // argument, this is the member function to call to record it.
79 void (General_options::*general_noarg
)();
81 // If this is a position independent function which takes an
82 // argument, this is the member function to call to record it.
83 void (General_options::*general_arg
)(const char*);
85 // If this is a position dependent option which does not take an
86 // argument, this is the member function to call to record it.
87 void (Position_dependent_options::*dependent_noarg
)();
89 // If this is a position dependent option which takes an argument,
90 // this is the member function to record it.
91 void (Position_dependent_options::*dependent_arg
)(const char*);
93 // Return whether this option takes an argument.
95 takes_argument() const
96 { return this->general_arg
!= NULL
|| this->dependent_arg
!= NULL
; }
99 // We have a separate table for -z options.
101 struct options::One_z_option
103 // The name of the option.
106 // The member function in General_options called to record it.
107 void (General_options::*set
)();
110 // We have a separate table for --debug options.
112 struct options::One_debug_option
114 // The name of the option.
117 // The flags to turn on.
118 unsigned int debug_flags
;
121 class options::Command_line_options
124 static const One_option options
[];
125 static const int options_size
;
126 static const One_z_option z_options
[];
127 static const int z_options_size
;
128 static const One_debug_option debug_options
[];
129 static const int debug_options_size
;
132 } // End namespace gold.
137 // Handle the special -l option, which adds an input file.
140 library(int argc
, char** argv
, char* arg
, bool long_option
,
141 gold::Command_line
* cmdline
)
143 return cmdline
->process_l_option(argc
, argv
, arg
, long_option
);
146 // Handle the special -T/--script option, which reads a linker script.
149 invoke_script(int argc
, char** argv
, char* arg
, bool long_option
,
150 gold::Command_line
* cmdline
)
153 const char* script_name
= cmdline
->get_special_argument("script", argc
, argv
,
156 if (!read_commandline_script(script_name
, cmdline
))
157 gold::gold_error(_("%s: unable to parse script file %s\n"),
158 gold::program_name
, arg
);
162 // Handle the special --start-group option.
165 start_group(int, char**, char* arg
, bool, gold::Command_line
* cmdline
)
167 cmdline
->start_group(arg
);
171 // Handle the special --end-group option.
174 end_group(int, char**, char* arg
, bool, gold::Command_line
* cmdline
)
176 cmdline
->end_group(arg
);
180 // Report usage information for ld --help, and exit.
183 help(int, char**, char*, bool, gold::Command_line
*)
185 printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name
);
187 const int options_size
= gold::options::Command_line_options::options_size
;
188 const gold::options::One_option
* options
=
189 gold::options::Command_line_options::options
;
190 for (int i
= 0; i
< options_size
; ++i
)
192 if (options
[i
].doc
== NULL
)
202 if (options
[j
].help_output
!= NULL
)
209 printf(options
[j
].help_output
);
210 len
+= std::strlen(options
[i
].help_output
);
215 if (options
[j
].short_option
!= '\0')
222 printf("-%c", options
[j
].short_option
);
227 if (options
[j
].long_option
!= NULL
)
234 if (options
[j
].dash
== gold::options::One_option::ONE_DASH
)
244 printf("%s", options
[j
].long_option
);
245 len
+= std::strlen(options
[j
].long_option
);
251 while (j
< options_size
&& options
[j
].doc
== NULL
);
258 for (; len
< 30; ++len
)
261 std::puts(options
[i
].doc
);
264 ::exit(EXIT_SUCCESS
);
269 // Report version information.
272 version(int, char**, char* opt
, bool, gold::Command_line
*)
274 gold::print_version(opt
[0] == 'v' && opt
[1] == '\0');
275 ::exit(EXIT_SUCCESS
);
279 // If the default sysroot is relocatable, try relocating it based on
283 get_relative_sysroot(const char* from
)
285 char* path
= make_relative_prefix(gold::program_name
, from
,
290 if (::stat(path
, &s
) == 0 && S_ISDIR(s
.st_mode
))
298 // Return the default sysroot. This is set by the --with-sysroot
299 // option to configure.
302 get_default_sysroot()
304 const char* sysroot
= TARGET_SYSTEM_ROOT
;
305 if (*sysroot
== '\0')
308 if (TARGET_SYSTEM_ROOT_RELOCATABLE
)
310 char* path
= get_relative_sysroot (BINDIR
);
312 path
= get_relative_sysroot (TOOLBINDIR
);
315 std::string ret
= path
;
324 } // End anonymous namespace.
329 // Helper macros used to specify the options. We could also do this
330 // using constructors, but then g++ would generate code to initialize
331 // the array. We want the array to be initialized statically so that
332 // we get better startup time.
334 #define GENERAL_NOARG(short_option, long_option, doc, help, dash, func) \
335 { short_option, long_option, doc, help, options::One_option::dash, \
336 NULL, func, NULL, NULL, NULL }
337 #define GENERAL_ARG(short_option, long_option, doc, help, dash, func) \
338 { short_option, long_option, doc, help, options::One_option::dash, \
339 NULL, NULL, func, NULL, NULL }
340 #define POSDEP_NOARG(short_option, long_option, doc, help, dash, func) \
341 { short_option, long_option, doc, help, options::One_option::dash, \
342 NULL, NULL, NULL, func, NULL }
343 #define POSDEP_ARG(short_option, long_option, doc, help, dash, func) \
344 { short_option, long_option, doc, help, options::One_option::dash, \
345 NULL, NULL, NULL, NULL, func }
346 #define SPECIAL(short_option, long_option, doc, help, dash, func) \
347 { short_option, long_option, doc, help, options::One_option::dash, \
348 func, NULL, NULL, NULL, NULL }
350 // Here is the actual list of options which we accept.
352 const options::One_option
353 options::Command_line_options::options
[] =
355 GENERAL_NOARG('\0', "allow-shlib-undefined",
356 N_("Allow unresolved references in shared libraries"),
358 &General_options::set_allow_shlib_undefined
),
359 GENERAL_NOARG('\0', "no-allow-shlib-undefined",
360 N_("Do not allow unresolved references in shared libraries"),
362 &General_options::set_no_allow_shlib_undefined
),
363 POSDEP_NOARG('\0', "as-needed",
364 N_("Only set DT_NEEDED for dynamic libs if used"),
365 NULL
, TWO_DASHES
, &Position_dependent_options::set_as_needed
),
366 POSDEP_NOARG('\0', "no-as-needed",
367 N_("Always DT_NEEDED for dynamic libs (default)"),
368 NULL
, TWO_DASHES
, &Position_dependent_options::clear_as_needed
),
369 POSDEP_NOARG('\0', "Bdynamic",
370 N_("-l searches for shared libraries"),
372 &Position_dependent_options::set_dynamic_search
),
373 POSDEP_NOARG('\0', "Bstatic",
374 N_("-l does not search for shared libraries"),
376 &Position_dependent_options::set_static_search
),
377 GENERAL_NOARG('\0', "Bsymbolic", N_("Bind defined symbols locally"),
378 NULL
, ONE_DASH
, &General_options::set_symbolic
),
379 GENERAL_NOARG('\0', "demangle", N_("Demangle C++ symbols in log messages"),
380 NULL
, TWO_DASHES
, &General_options::set_demangle
),
381 GENERAL_NOARG('\0', "no-demangle",
382 N_("Do not demangle C++ symbols in log messages"),
383 NULL
, TWO_DASHES
, &General_options::clear_demangle
),
384 GENERAL_NOARG('\0', "detect-odr-violations",
385 N_("Try to detect violations of the One Definition Rule"),
386 NULL
, TWO_DASHES
, &General_options::set_detect_odr_violations
),
387 GENERAL_NOARG('E', "export-dynamic", N_("Export all dynamic symbols"),
388 NULL
, TWO_DASHES
, &General_options::set_export_dynamic
),
389 GENERAL_NOARG('\0', "eh-frame-hdr", N_("Create exception frame header"),
390 NULL
, TWO_DASHES
, &General_options::set_create_eh_frame_hdr
),
391 GENERAL_ARG('I', "dynamic-linker", N_("Set dynamic linker path"),
392 N_("-I PROGRAM, --dynamic-linker PROGRAM"), TWO_DASHES
,
393 &General_options::set_dynamic_linker
),
394 SPECIAL('l', "library", N_("Search for library LIBNAME"),
395 N_("-lLIBNAME, --library LIBNAME"), TWO_DASHES
,
397 GENERAL_ARG('L', "library-path", N_("Add directory to search path"),
398 N_("-L DIR, --library-path DIR"), TWO_DASHES
,
399 &General_options::add_to_search_path
),
400 GENERAL_ARG('m', NULL
, N_("Ignored for compatibility"), NULL
, ONE_DASH
,
401 &General_options::ignore
),
402 GENERAL_ARG('o', "output", N_("Set output file name"),
403 N_("-o FILE, --output FILE"), TWO_DASHES
,
404 &General_options::set_output_file_name
),
405 GENERAL_ARG('O', NULL
, N_("Optimize output file size"),
406 N_("-O level"), ONE_DASH
,
407 &General_options::set_optimization_level
),
408 GENERAL_NOARG('r', NULL
, N_("Generate relocatable output"), NULL
,
409 ONE_DASH
, &General_options::set_relocatable
),
410 GENERAL_ARG('R', "rpath", N_("Add DIR to runtime search path"),
411 N_("-R DIR, -rpath DIR"), ONE_DASH
,
412 &General_options::add_to_rpath
),
413 GENERAL_ARG('\0', "rpath-link",
414 N_("Add DIR to link time shared library search path"),
415 N_("--rpath-link DIR"), TWO_DASHES
,
416 &General_options::add_to_rpath_link
),
417 GENERAL_NOARG('s', "strip-all", N_("Strip all symbols"), NULL
,
418 TWO_DASHES
, &General_options::set_strip_all
),
419 GENERAL_NOARG('\0', "strip-debug-gdb",
420 N_("Strip debug symbols that are unused by gdb "
421 "(at least versions <= 6.7)"),
422 NULL
, TWO_DASHES
, &General_options::set_strip_debug_gdb
),
423 // This must come after -Sdebug since it's a prefix of it.
424 GENERAL_NOARG('S', "strip-debug", N_("Strip debugging information"), NULL
,
425 TWO_DASHES
, &General_options::set_strip_debug
),
426 GENERAL_NOARG('\0', "shared", N_("Generate shared library"),
427 NULL
, ONE_DASH
, &General_options::set_shared
),
428 GENERAL_NOARG('\0', "static", N_("Do not link against shared libraries"),
429 NULL
, ONE_DASH
, &General_options::set_static
),
430 GENERAL_NOARG('\0', "stats", N_("Print resource usage statistics"),
431 NULL
, TWO_DASHES
, &General_options::set_stats
),
432 GENERAL_ARG('\0', "sysroot", N_("Set target system root directory"),
433 N_("--sysroot DIR"), TWO_DASHES
, &General_options::set_sysroot
),
434 GENERAL_ARG('\0', "Ttext", N_("Set the address of the .text section"),
435 N_("-Ttext ADDRESS"), ONE_DASH
,
436 &General_options::set_text_segment_address
),
437 // This must come after -Ttext since it's a prefix of it.
438 SPECIAL('T', "script", N_("Read linker script"),
439 N_("-T FILE, --script FILE"), TWO_DASHES
,
441 GENERAL_NOARG('\0', "threads", N_("Run the linker multi-threaded"),
442 NULL
, TWO_DASHES
, &General_options::set_threads
),
443 GENERAL_NOARG('\0', "no-threads", N_("Do not run the linker multi-threaded"),
444 NULL
, TWO_DASHES
, &General_options::clear_threads
),
445 GENERAL_ARG('\0', "thread-count", N_("Number of threads to use"),
446 N_("--thread-count COUNT"), TWO_DASHES
,
447 &General_options::set_thread_count
),
448 GENERAL_ARG('\0', "thread-count-initial",
449 N_("Number of threads to use in initial pass"),
450 N_("--thread-count-initial COUNT"), TWO_DASHES
,
451 &General_options::set_thread_count_initial
),
452 GENERAL_ARG('\0', "thread-count-middle",
453 N_("Number of threads to use in middle pass"),
454 N_("--thread-count-middle COUNT"), TWO_DASHES
,
455 &General_options::set_thread_count_middle
),
456 GENERAL_ARG('\0', "thread-count-final",
457 N_("Number of threads to use in final pass"),
458 N_("--thread-count-final COUNT"), TWO_DASHES
,
459 &General_options::set_thread_count_final
),
460 POSDEP_NOARG('\0', "whole-archive",
461 N_("Include all archive contents"),
463 &Position_dependent_options::set_whole_archive
),
464 POSDEP_NOARG('\0', "no-whole-archive",
465 N_("Include only needed archive contents"),
467 &Position_dependent_options::clear_whole_archive
),
469 GENERAL_ARG('z', NULL
,
470 N_("Subcommands as follows:\n\
471 -z execstack Mark output as requiring executable stack\n\
472 -z noexecstack Mark output as not requiring executable stack"),
473 N_("-z SUBCOMMAND"), ONE_DASH
,
474 &General_options::handle_z_option
),
476 SPECIAL('(', "start-group", N_("Start a library search group"), NULL
,
477 TWO_DASHES
, &start_group
),
478 SPECIAL(')', "end-group", N_("End a library search group"), NULL
,
479 TWO_DASHES
, &end_group
),
480 SPECIAL('\0', "help", N_("Report usage information"), NULL
,
482 SPECIAL('v', "version", N_("Report version information"), NULL
,
483 TWO_DASHES
, &version
),
484 GENERAL_ARG('\0', "debug", N_("Turn on debugging (all,task)"),
485 N_("--debug=TYPE"), TWO_DASHES
,
486 &General_options::handle_debug_option
)
489 const int options::Command_line_options::options_size
=
490 sizeof (options
) / sizeof (options
[0]);
494 const options::One_z_option
495 options::Command_line_options::z_options
[] =
497 { "execstack", &General_options::set_execstack
},
498 { "noexecstack", &General_options::set_noexecstack
},
501 const int options::Command_line_options::z_options_size
=
502 sizeof(z_options
) / sizeof(z_options
[0]);
504 // The --debug options.
506 const options::One_debug_option
507 options::Command_line_options::debug_options
[] =
509 { "all", DEBUG_ALL
},
510 { "task", DEBUG_TASK
},
513 const int options::Command_line_options::debug_options_size
=
514 sizeof(debug_options
) / sizeof(debug_options
[0]);
516 // The default values for the general options.
518 General_options::General_options()
519 : export_dynamic_(false),
520 dynamic_linker_(NULL
),
522 optimization_level_(0),
523 output_file_name_("a.out"),
524 is_relocatable_(false),
526 allow_shlib_undefined_(false),
528 detect_odr_violations_(false),
529 create_eh_frame_hdr_(false),
536 text_segment_address_(-1U), // -1 indicates value not set by user
538 thread_count_initial_(0),
539 thread_count_middle_(0),
540 thread_count_final_(0),
541 execstack_(EXECSTACK_FROM_INPUT
),
544 // We initialize demangle_ based on the environment variable
545 // COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the
546 // output of the linker, unless COLLECT_NO_DEMANGLE is set in the
547 // environment. Acting the same way here lets us provide the same
548 // interface by default.
549 this->demangle_
= getenv("COLLECT_NO_DEMANGLE") == NULL
;
552 // The default values for the position dependent options.
554 Position_dependent_options::Position_dependent_options()
555 : do_static_search_(false),
557 include_whole_archive_(false)
561 // Handle the -z option.
564 General_options::handle_z_option(const char* arg
)
566 const int z_options_size
= options::Command_line_options::z_options_size
;
567 const gold::options::One_z_option
* z_options
=
568 gold::options::Command_line_options::z_options
;
569 for (int i
= 0; i
< z_options_size
; ++i
)
571 if (strcmp(arg
, z_options
[i
].name
) == 0)
573 (this->*(z_options
[i
].set
))();
578 fprintf(stderr
, _("%s: unrecognized -z subcommand: %s\n"),
580 ::exit(EXIT_FAILURE
);
583 // Handle the --debug option.
586 General_options::handle_debug_option(const char* arg
)
588 const int debug_options_size
=
589 options::Command_line_options::debug_options_size
;
590 const gold::options::One_debug_option
* debug_options
=
591 options::Command_line_options::debug_options
;
592 for (int i
= 0; i
< debug_options_size
; ++i
)
594 if (strcmp(arg
, debug_options
[i
].name
) == 0)
596 this->set_debug(debug_options
[i
].debug_flags
);
601 fprintf(stderr
, _("%s: unrecognized --debug subcommand: %s\n"),
603 ::exit(EXIT_FAILURE
);
606 // Add the sysroot, if any, to the search paths.
609 General_options::add_sysroot()
611 if (this->sysroot_
.empty())
613 this->sysroot_
= get_default_sysroot();
614 if (this->sysroot_
.empty())
618 const char* sysroot
= this->sysroot_
.c_str();
619 char* canonical_sysroot
= lrealpath(sysroot
);
621 for (Dir_list::iterator p
= this->search_path_
.begin();
622 p
!= this->search_path_
.end();
624 p
->add_sysroot(sysroot
, canonical_sysroot
);
626 free(canonical_sysroot
);
629 // Search_directory methods.
631 // This is called if we have a sysroot. Apply the sysroot if
632 // appropriate. Record whether the directory is in the sysroot.
635 Search_directory::add_sysroot(const char* sysroot
,
636 const char* canonical_sysroot
)
638 gold_assert(*sysroot
!= '\0');
639 if (this->put_in_sysroot_
)
641 if (!IS_DIR_SEPARATOR(this->name_
[0])
642 && !IS_DIR_SEPARATOR(sysroot
[strlen(sysroot
) - 1]))
643 this->name_
= '/' + this->name_
;
644 this->name_
= sysroot
+ this->name_
;
645 this->is_in_sysroot_
= true;
649 // Check whether this entry is in the sysroot. To do this
650 // correctly, we need to use canonical names. Otherwise we will
651 // get confused by the ../../.. paths that gcc tends to use.
652 char* canonical_name
= lrealpath(this->name_
.c_str());
653 int canonical_name_len
= strlen(canonical_name
);
654 int canonical_sysroot_len
= strlen(canonical_sysroot
);
655 if (canonical_name_len
> canonical_sysroot_len
656 && IS_DIR_SEPARATOR(canonical_name
[canonical_sysroot_len
]))
658 canonical_name
[canonical_sysroot_len
] = '\0';
659 if (FILENAME_CMP(canonical_name
, canonical_sysroot
) == 0)
660 this->is_in_sysroot_
= true;
662 free(canonical_name
);
666 // Input_arguments methods.
668 // Add a file to the list.
671 Input_arguments::add_file(const Input_file_argument
& file
)
673 if (!this->in_group_
)
674 this->input_argument_list_
.push_back(Input_argument(file
));
677 gold_assert(!this->input_argument_list_
.empty());
678 gold_assert(this->input_argument_list_
.back().is_group());
679 this->input_argument_list_
.back().group()->add_file(file
);
686 Input_arguments::start_group()
688 gold_assert(!this->in_group_
);
689 Input_file_group
* group
= new Input_file_group();
690 this->input_argument_list_
.push_back(Input_argument(group
));
691 this->in_group_
= true;
697 Input_arguments::end_group()
699 gold_assert(this->in_group_
);
700 this->in_group_
= false;
703 // Command_line options.
705 Command_line::Command_line()
706 : options_(), position_options_(), inputs_()
710 // Process the command line options. For process_one_option,
711 // i is the index of argv to process next, and the return value
712 // is the index of the next option to process (i+1 or i+2, or argc
713 // to indicate processing is done). no_more_options is set to true
714 // if (and when) "--" is seen as an option.
717 Command_line::process_one_option(int argc
, char** argv
, int i
,
718 bool* no_more_options
)
720 const int options_size
= options::Command_line_options::options_size
;
721 const options::One_option
* options
= options::Command_line_options::options
;
722 gold_assert(i
< argc
);
724 if (argv
[i
][0] != '-' || *no_more_options
)
726 this->add_file(argv
[i
], false);
730 // Option starting with '-'.
732 if (argv
[i
][1] == '-')
735 if (argv
[i
][2] == '\0')
737 *no_more_options
= true;
742 // Look for a long option match.
743 char* opt
= argv
[i
] + dashes
;
746 char* arg
= strchr(opt
, '=');
747 bool argument_with_equals
= arg
!= NULL
;
753 else if (i
+ 1 < argc
)
760 for (j
= 0; j
< options_size
; ++j
)
762 if (options
[j
].long_option
!= NULL
765 != options::One_option::EXACTLY_TWO_DASHES
))
766 && first
== options
[j
].long_option
[0]
767 && strcmp(opt
, options
[j
].long_option
) == 0)
769 if (options
[j
].special
)
771 // Restore the '=' we clobbered above.
772 if (arg
!= NULL
&& skiparg
== 0)
774 i
+= options
[j
].special(argc
- i
, argv
+ i
, opt
, true, this);
778 if (!options
[j
].takes_argument())
780 if (argument_with_equals
)
781 this->usage(_("unexpected argument"), argv
[i
]);
788 this->usage(_("missing argument"), argv
[i
]);
790 this->apply_option(options
[j
], arg
);
796 if (j
< options_size
)
799 // If we saw two dashes, we needed to have seen a long option.
801 this->usage(_("unknown option"), argv
[i
]);
803 // Look for a short option match. There may be more than one
804 // short option in a given argument.
806 char* s
= argv
[i
] + 1;
808 while (*s
!= '\0' && !done
)
812 for (j
= 0; j
< options_size
; ++j
)
814 if (options
[j
].short_option
== opt
)
816 if (options
[j
].special
)
818 // Undo the argument skip done above.
820 i
+= options
[j
].special(argc
- i
, argv
+ i
, s
, false,
827 if (options
[j
].takes_argument())
840 this->usage(_("missing argument"), opt
);
842 this->apply_option(options
[j
], arg
);
848 if (j
>= options_size
)
849 this->usage(_("unknown option"), *s
);
858 Command_line::process(int argc
, char** argv
)
860 bool no_more_options
= false;
863 i
= process_one_option(argc
, argv
, i
, &no_more_options
);
865 if (this->inputs_
.in_group())
867 fprintf(stderr
, _("%s: missing group end\n"), program_name
);
871 // FIXME: We should only do this when configured in native mode.
872 this->options_
.add_to_search_path_with_sysroot("/lib");
873 this->options_
.add_to_search_path_with_sysroot("/usr/lib");
875 this->options_
.add_sysroot();
877 // Ensure options don't contradict each other and are otherwise kosher.
878 this->normalize_options();
881 // Extract an option argument for a special option. LONGNAME is the
882 // long name of the option. This sets *PRET to the return value for
883 // the special function handler to skip to the next option.
886 Command_line::get_special_argument(const char* longname
, int argc
, char** argv
,
887 const char* arg
, bool long_option
,
892 size_t longlen
= strlen(longname
);
893 gold_assert(strncmp(arg
, longname
, longlen
) == 0);
902 gold_assert(*arg
== '\0');
921 this->usage(_("missing argument"), arg
);
924 // Ensure options don't contradict each other and are otherwise kosher.
927 Command_line::normalize_options()
929 // If the user specifies both -s and -r, convert the -s as -S.
930 // -r requires us to keep externally visible symbols!
931 if (this->options_
.strip_all() && this->options_
.is_relocatable())
933 // Clears the strip_all() status, replacing it with strip_debug().
934 this->options_
.set_strip_debug();
937 // FIXME: we can/should be doing a lot more sanity checking here.
941 // Apply a command line option.
944 Command_line::apply_option(const options::One_option
& opt
,
949 if (opt
.general_noarg
)
950 (this->options_
.*(opt
.general_noarg
))();
951 else if (opt
.dependent_noarg
)
952 (this->position_options_
.*(opt
.dependent_noarg
))();
959 (this->options_
.*(opt
.general_arg
))(arg
);
960 else if (opt
.dependent_arg
)
961 (this->position_options_
.*(opt
.dependent_arg
))(arg
);
967 // Add an input file or library.
970 Command_line::add_file(const char* name
, bool is_lib
)
972 Input_file_argument
file(name
, is_lib
, "", this->position_options_
);
973 this->inputs_
.add_file(file
);
976 // Handle the -l option, which requires special treatment.
979 Command_line::process_l_option(int argc
, char** argv
, char* arg
,
983 const char* libname
= this->get_special_argument("library", argc
, argv
, arg
,
985 this->add_file(libname
, true);
989 // Handle the --start-group option.
992 Command_line::start_group(const char* arg
)
994 if (this->inputs_
.in_group())
995 this->usage(_("may not nest groups"), arg
);
996 this->inputs_
.start_group();
999 // Handle the --end-group option.
1002 Command_line::end_group(const char* arg
)
1004 if (!this->inputs_
.in_group())
1005 this->usage(_("group end without group start"), arg
);
1006 this->inputs_
.end_group();
1009 // Report a usage error. */
1012 Command_line::usage()
1015 _("%s: use the --help option for usage information\n"),
1017 ::exit(EXIT_FAILURE
);
1021 Command_line::usage(const char* msg
, const char *opt
)
1025 program_name
, opt
, msg
);
1030 Command_line::usage(const char* msg
, char opt
)
1034 program_name
, opt
, msg
);
1038 } // End namespace gold.