1 // options.h -- handle command line options for gold -*- C++ -*-
3 // Copyright (C) 2006-2016 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.
23 // General_options (from Command_line::options())
24 // All the options (a.k.a. command-line flags)
25 // Input_argument (from Command_line::inputs())
26 // The list of input files, including -l options.
28 // Everything we get from the command line -- the General_options
29 // plus the Input_arguments.
31 // There are also some smaller classes, such as
32 // Position_dependent_options which hold a subset of General_options
33 // that change as options are parsed (as opposed to the usual behavior
34 // of the last instance of that option specified on the commandline wins).
36 #ifndef GOLD_OPTIONS_H
37 #define GOLD_OPTIONS_H
53 class General_options
;
54 class Search_directory
;
55 class Input_file_group
;
57 class Position_dependent_options
;
62 // Incremental build action for a specific file, as selected by the user.
64 enum Incremental_disposition
66 // Startup files that appear before the first disposition option.
67 // These will default to INCREMENTAL_CHECK unless the
68 // --incremental-startup-unchanged option is given.
69 // (For files added implicitly by gcc before any user options.)
71 // Determine the status from the timestamp (default).
73 // Assume the file changed from the previous build.
75 // Assume the file didn't change from the previous build.
79 // The nested namespace is to contain all the global variables and
80 // structs that need to be defined in the .h file, but do not need to
81 // be used outside this class.
84 typedef std::vector
<Search_directory
> Dir_list
;
85 typedef Unordered_set
<std::string
> String_set
;
87 // These routines convert from a string option to various types.
88 // Each gives a fatal error if it cannot parse the argument.
91 parse_bool(const char* option_name
, const char* arg
, bool* retval
);
94 parse_int(const char* option_name
, const char* arg
, int* retval
);
97 parse_uint(const char* option_name
, const char* arg
, int* retval
);
100 parse_uint64(const char* option_name
, const char* arg
, uint64_t* retval
);
103 parse_double(const char* option_name
, const char* arg
, double* retval
);
106 parse_percent(const char* option_name
, const char* arg
, double* retval
);
109 parse_string(const char* option_name
, const char* arg
, const char** retval
);
112 parse_optional_string(const char* option_name
, const char* arg
,
113 const char** retval
);
116 parse_dirlist(const char* option_name
, const char* arg
, Dir_list
* retval
);
119 parse_set(const char* option_name
, const char* arg
, String_set
* retval
);
122 parse_choices(const char* option_name
, const char* arg
, const char** retval
,
123 const char* choices
[], int num_choices
);
127 // Most options have both a shortname (one letter) and a longname.
128 // This enum controls how many dashes are expected for longname access
129 // -- shortnames always use one dash. Most longnames will accept
130 // either one dash or two; the only difference between ONE_DASH and
131 // TWO_DASHES is how we print the option in --help. However, some
132 // longnames require two dashes, and some require only one. The
133 // special value DASH_Z means that the option is preceded by "-z".
136 ONE_DASH
, TWO_DASHES
, EXACTLY_ONE_DASH
, EXACTLY_TWO_DASHES
, DASH_Z
139 // LONGNAME is the long-name of the option with dashes converted to
140 // underscores, or else the short-name if the option has no long-name.
141 // It is never the empty string.
142 // DASHES is an instance of the Dashes enum: ONE_DASH, TWO_DASHES, etc.
143 // SHORTNAME is the short-name of the option, as a char, or '\0' if the
144 // option has no short-name. If the option has no long-name, you
145 // should specify the short-name in *both* VARNAME and here.
146 // DEFAULT_VALUE is the value of the option if not specified on the
147 // commandline, as a string.
148 // HELPSTRING is the descriptive text used with the option via --help
149 // HELPARG is how you define the argument to the option.
150 // --help output is "-shortname HELPARG, --longname HELPARG: HELPSTRING"
151 // HELPARG should be NULL iff the option is a bool and takes no arg.
152 // OPTIONAL_ARG is true if this option takes an optional argument. An
153 // optional argument must be specifid as --OPTION=VALUE, not
155 // READER provides parse_to_value, which is a function that will convert
156 // a char* argument into the proper type and store it in some variable.
157 // A One_option struct initializes itself with the global list of options
158 // at constructor time, so be careful making one of these.
161 std::string longname
;
164 const char* default_value
;
165 const char* helpstring
;
170 One_option(const char* ln
, Dashes d
, char sn
, const char* dv
,
171 const char* hs
, const char* ha
, bool oa
, Struct_var
* r
)
172 : longname(ln
), dashes(d
), shortname(sn
), default_value(dv
? dv
: ""),
173 helpstring(hs
), helparg(ha
), optional_arg(oa
), reader(r
)
175 // In longname, we convert all underscores to dashes, since GNU
176 // style uses dashes in option names. longname is likely to have
177 // underscores in it because it's also used to declare a C++
179 const char* pos
= strchr(this->longname
.c_str(), '_');
180 for (; pos
; pos
= strchr(pos
, '_'))
181 this->longname
[pos
- this->longname
.c_str()] = '-';
183 // We only register ourselves if our helpstring is not NULL. This
184 // is to support the "no-VAR" boolean variables, which we
185 // conditionally turn on by defining "no-VAR" help text.
186 if (this->helpstring
)
187 this->register_option();
190 // This option takes an argument iff helparg is not NULL.
192 takes_argument() const
193 { return this->helparg
!= NULL
; }
195 // Whether the argument is optional.
197 takes_optional_argument() const
198 { return this->optional_arg
; }
200 // Register this option with the global list of options.
204 // Print this option to stdout (used with --help).
209 // All options have a Struct_##varname that inherits from this and
210 // actually implements parse_to_value for that option.
213 // OPTION: the name of the option as specified on the commandline,
214 // including leading dashes, and any text following the option:
215 // "-O", "--defsym=mysym=0x1000", etc.
216 // ARG: the arg associated with this option, or NULL if the option
217 // takes no argument: "2", "mysym=0x1000", etc.
218 // CMDLINE: the global Command_line object. Used by DEFINE_special.
219 // OPTIONS: the global General_options object. Used by DEFINE_special.
221 parse_to_value(const char* option
, const char* arg
,
222 Command_line
* cmdline
, General_options
* options
) = 0;
224 ~Struct_var() // To make gcc happy.
228 // This is for "special" options that aren't of any predefined type.
229 struct Struct_special
: public Struct_var
231 // If you change this, change the parse-fn in DEFINE_special as well.
232 typedef void (General_options::*Parse_function
)(const char*, const char*,
234 Struct_special(const char* varname
, Dashes dashes
, char shortname
,
235 Parse_function parse_function
,
236 const char* helpstring
, const char* helparg
)
237 : option(varname
, dashes
, shortname
, "", helpstring
, helparg
, false, this),
238 parse(parse_function
)
241 void parse_to_value(const char* option
, const char* arg
,
242 Command_line
* cmdline
, General_options
* options
)
243 { (options
->*(this->parse
))(option
, arg
, cmdline
); }
246 Parse_function parse
;
249 } // End namespace options.
252 // These are helper macros use by DEFINE_uint64/etc below.
253 // This macro is used inside the General_options_ class, so defines
254 // var() and set_var() as General_options methods. Arguments as are
255 // for the constructor for One_option. param_type__ is the same as
256 // type__ for built-in types, and "const type__ &" otherwise.
258 // When we define the linker command option "assert", the macro argument
259 // varname__ of DEFINE_var below will be replaced by "assert". On Mac OSX
260 // assert.h is included implicitly by one of the library headers we use. To
261 // avoid unintended macro substitution of "assert()", we need to enclose
262 // varname__ with parenthese.
263 #define DEFINE_var(varname__, dashes__, shortname__, default_value__, \
264 default_value_as_string__, helpstring__, helparg__, \
265 optional_arg__, type__, param_type__, parse_fn__) \
268 (varname__)() const \
269 { return this->varname__##_.value; } \
272 user_set_##varname__() const \
273 { return this->varname__##_.user_set_via_option; } \
276 set_user_set_##varname__() \
277 { this->varname__##_.user_set_via_option = true; } \
280 struct Struct_##varname__ : public options::Struct_var \
282 Struct_##varname__() \
283 : option(#varname__, dashes__, shortname__, default_value_as_string__, \
284 helpstring__, helparg__, optional_arg__, this), \
285 user_set_via_option(false), value(default_value__) \
289 parse_to_value(const char* option_name, const char* arg, \
290 Command_line*, General_options*) \
292 parse_fn__(option_name, arg, &this->value); \
293 this->user_set_via_option = true; \
296 options::One_option option; \
297 bool user_set_via_option; \
300 Struct_##varname__ varname__##_; \
302 set_##varname__(param_type__ value) \
303 { this->varname__##_.value = value; }
305 // These macros allow for easy addition of a new commandline option.
307 // If no_helpstring__ is not NULL, then in addition to creating
308 // VARNAME, we also create an option called no-VARNAME (or, for a -z
309 // option, noVARNAME).
310 #define DEFINE_bool(varname__, dashes__, shortname__, default_value__, \
311 helpstring__, no_helpstring__) \
312 DEFINE_var(varname__, dashes__, shortname__, default_value__, \
313 default_value__ ? "true" : "false", helpstring__, NULL, \
314 false, bool, bool, options::parse_bool) \
315 struct Struct_no_##varname__ : public options::Struct_var \
317 Struct_no_##varname__() : option((dashes__ == options::DASH_Z \
319 : "no-" #varname__), \
321 default_value__ ? "false" : "true", \
322 no_helpstring__, NULL, false, this) \
326 parse_to_value(const char*, const char*, \
327 Command_line*, General_options* options) \
329 options->set_##varname__(false); \
330 options->set_user_set_##varname__(); \
333 options::One_option option; \
335 Struct_no_##varname__ no_##varname__##_initializer_
337 #define DEFINE_enable(varname__, dashes__, shortname__, default_value__, \
338 helpstring__, no_helpstring__) \
339 DEFINE_var(enable_##varname__, dashes__, shortname__, default_value__, \
340 default_value__ ? "true" : "false", helpstring__, NULL, \
341 false, bool, bool, options::parse_bool) \
342 struct Struct_disable_##varname__ : public options::Struct_var \
344 Struct_disable_##varname__() : option("disable-" #varname__, \
346 default_value__ ? "false" : "true", \
347 no_helpstring__, NULL, false, this) \
351 parse_to_value(const char*, const char*, \
352 Command_line*, General_options* options) \
353 { options->set_enable_##varname__(false); } \
355 options::One_option option; \
357 Struct_disable_##varname__ disable_##varname__##_initializer_
359 #define DEFINE_int(varname__, dashes__, shortname__, default_value__, \
360 helpstring__, helparg__) \
361 DEFINE_var(varname__, dashes__, shortname__, default_value__, \
362 #default_value__, helpstring__, helparg__, false, \
363 int, int, options::parse_int)
365 #define DEFINE_uint(varname__, dashes__, shortname__, default_value__, \
366 helpstring__, helparg__) \
367 DEFINE_var(varname__, dashes__, shortname__, default_value__, \
368 #default_value__, helpstring__, helparg__, false, \
369 int, int, options::parse_uint)
371 #define DEFINE_uint64(varname__, dashes__, shortname__, default_value__, \
372 helpstring__, helparg__) \
373 DEFINE_var(varname__, dashes__, shortname__, default_value__, \
374 #default_value__, helpstring__, helparg__, false, \
375 uint64_t, uint64_t, options::parse_uint64)
377 #define DEFINE_double(varname__, dashes__, shortname__, default_value__, \
378 helpstring__, helparg__) \
379 DEFINE_var(varname__, dashes__, shortname__, default_value__, \
380 #default_value__, helpstring__, helparg__, false, \
381 double, double, options::parse_double)
383 #define DEFINE_percent(varname__, dashes__, shortname__, default_value__, \
384 helpstring__, helparg__) \
385 DEFINE_var(varname__, dashes__, shortname__, default_value__ / 100.0, \
386 #default_value__, helpstring__, helparg__, false, \
387 double, double, options::parse_percent)
389 #define DEFINE_string(varname__, dashes__, shortname__, default_value__, \
390 helpstring__, helparg__) \
391 DEFINE_var(varname__, dashes__, shortname__, default_value__, \
392 default_value__, helpstring__, helparg__, false, \
393 const char*, const char*, options::parse_string)
395 // This is like DEFINE_string, but we convert each occurrence to a
396 // Search_directory and store it in a vector. Thus we also have the
397 // add_to_VARNAME() method, to append to the vector.
398 #define DEFINE_dirlist(varname__, dashes__, shortname__, \
399 helpstring__, helparg__) \
400 DEFINE_var(varname__, dashes__, shortname__, , \
401 "", helpstring__, helparg__, false, options::Dir_list, \
402 const options::Dir_list&, options::parse_dirlist) \
404 add_to_##varname__(const char* new_value) \
405 { options::parse_dirlist(NULL, new_value, &this->varname__##_.value); } \
407 add_search_directory_to_##varname__(const Search_directory& dir) \
408 { this->varname__##_.value.push_back(dir); }
410 // This is like DEFINE_string, but we store a set of strings.
411 #define DEFINE_set(varname__, dashes__, shortname__, \
412 helpstring__, helparg__) \
413 DEFINE_var(varname__, dashes__, shortname__, , \
414 "", helpstring__, helparg__, false, options::String_set, \
415 const options::String_set&, options::parse_set) \
418 any_##varname__() const \
419 { return !this->varname__##_.value.empty(); } \
422 is_##varname__(const char* symbol) const \
424 return (!this->varname__##_.value.empty() \
425 && (this->varname__##_.value.find(std::string(symbol)) \
426 != this->varname__##_.value.end())); \
429 options::String_set::const_iterator \
430 varname__##_begin() const \
431 { return this->varname__##_.value.begin(); } \
433 options::String_set::const_iterator \
434 varname__##_end() const \
435 { return this->varname__##_.value.end(); }
437 // When you have a list of possible values (expressed as string)
438 // After helparg__ should come an initializer list, like
439 // {"foo", "bar", "baz"}
440 #define DEFINE_enum(varname__, dashes__, shortname__, default_value__, \
441 helpstring__, helparg__, ...) \
442 DEFINE_var(varname__, dashes__, shortname__, default_value__, \
443 default_value__, helpstring__, helparg__, false, \
444 const char*, const char*, parse_choices_##varname__) \
446 static void parse_choices_##varname__(const char* option_name, \
448 const char** retval) { \
449 const char* choices[] = __VA_ARGS__; \
450 options::parse_choices(option_name, arg, retval, \
451 choices, sizeof(choices) / sizeof(*choices)); \
454 // This is like DEFINE_bool, but VARNAME is the name of a different
455 // option. This option becomes an alias for that one. INVERT is true
456 // if this option is an inversion of the other one.
457 #define DEFINE_bool_alias(option__, varname__, dashes__, shortname__, \
458 helpstring__, no_helpstring__, invert__) \
460 struct Struct_##option__ : public options::Struct_var \
462 Struct_##option__() \
463 : option(#option__, dashes__, shortname__, "", helpstring__, \
468 parse_to_value(const char*, const char*, \
469 Command_line*, General_options* options) \
471 options->set_##varname__(!invert__); \
472 options->set_user_set_##varname__(); \
475 options::One_option option; \
477 Struct_##option__ option__##_; \
479 struct Struct_no_##option__ : public options::Struct_var \
481 Struct_no_##option__() \
482 : option((dashes__ == options::DASH_Z \
484 : "no-" #option__), \
485 dashes__, '\0', "", no_helpstring__, \
490 parse_to_value(const char*, const char*, \
491 Command_line*, General_options* options) \
493 options->set_##varname__(invert__); \
494 options->set_user_set_##varname__(); \
497 options::One_option option; \
499 Struct_no_##option__ no_##option__##_initializer_
501 // This is like DEFINE_uint64, but VARNAME is the name of a different
502 // option. This option becomes an alias for that one.
503 #define DEFINE_uint64_alias(option__, varname__, dashes__, shortname__, \
504 helpstring__, helparg__) \
506 struct Struct_##option__ : public options::Struct_var \
508 Struct_##option__() \
509 : option(#option__, dashes__, shortname__, "", helpstring__, \
510 helparg__, false, this) \
514 parse_to_value(const char* option_name, const char* arg, \
515 Command_line*, General_options* options) \
518 options::parse_uint64(option_name, arg, &value); \
519 options->set_##varname__(value); \
520 options->set_user_set_##varname__(); \
523 options::One_option option; \
525 Struct_##option__ option__##_;
527 // This is used for non-standard flags. It defines no functions; it
528 // just calls General_options::parse_VARNAME whenever the flag is
529 // seen. We declare parse_VARNAME as a static member of
530 // General_options; you are responsible for defining it there.
531 // helparg__ should be NULL iff this special-option is a boolean.
532 #define DEFINE_special(varname__, dashes__, shortname__, \
533 helpstring__, helparg__) \
535 void parse_##varname__(const char* option, const char* arg, \
536 Command_line* inputs); \
537 struct Struct_##varname__ : public options::Struct_special \
539 Struct_##varname__() \
540 : options::Struct_special(#varname__, dashes__, shortname__, \
541 &General_options::parse_##varname__, \
542 helpstring__, helparg__) \
545 Struct_##varname__ varname__##_initializer_
547 // An option that takes an optional string argument. If the option is
548 // used with no argument, the value will be the default, and
549 // user_set_via_option will be true.
550 #define DEFINE_optional_string(varname__, dashes__, shortname__, \
552 helpstring__, helparg__) \
553 DEFINE_var(varname__, dashes__, shortname__, default_value__, \
554 default_value__, helpstring__, helparg__, true, \
555 const char*, const char*, options::parse_optional_string)
557 // A directory to search. For each directory we record whether it is
558 // in the sysroot. We need to know this so that, if a linker script
559 // is found within the sysroot, we will apply the sysroot to any files
560 // named by that script.
562 class Search_directory
565 // We need a default constructor because we put this in a
568 : name_(NULL
), put_in_sysroot_(false), is_in_sysroot_(false)
571 // This is the usual constructor.
572 Search_directory(const std::string
& name
, bool put_in_sysroot
)
573 : name_(name
), put_in_sysroot_(put_in_sysroot
), is_in_sysroot_(false)
575 if (this->name_
.empty())
579 // This is called if we have a sysroot. The sysroot is prefixed to
580 // any entries for which put_in_sysroot_ is true. is_in_sysroot_ is
581 // set to true for any enries which are in the sysroot (this will
582 // naturally include any entries for which put_in_sysroot_ is true).
583 // SYSROOT is the sysroot, CANONICAL_SYSROOT is the result of
584 // passing SYSROOT to lrealpath.
586 add_sysroot(const char* sysroot
, const char* canonical_sysroot
);
588 // Get the directory name.
591 { return this->name_
; }
593 // Return whether this directory is in the sysroot.
595 is_in_sysroot() const
596 { return this->is_in_sysroot_
; }
598 // Return whether this is considered a system directory.
600 is_system_directory() const
601 { return this->put_in_sysroot_
|| this->is_in_sysroot_
; }
604 // The directory name.
606 // True if the sysroot should be added as a prefix for this
607 // directory (if there is a sysroot). This is true for system
608 // directories that we search by default.
609 bool put_in_sysroot_
;
610 // True if this directory is in the sysroot (if there is a sysroot).
611 // This is true if there is a sysroot and either 1) put_in_sysroot_
612 // is true, or 2) the directory happens to be in the sysroot based
613 // on a pathname comparison.
617 class General_options
620 // NOTE: For every option that you add here, also consider if you
621 // should add it to Position_dependent_options.
622 DEFINE_special(help
, options::TWO_DASHES
, '\0',
623 N_("Report usage information"), NULL
);
624 DEFINE_special(version
, options::TWO_DASHES
, 'v',
625 N_("Report version information"), NULL
);
626 DEFINE_special(V
, options::EXACTLY_ONE_DASH
, '\0',
627 N_("Report version and target information"), NULL
);
629 // These options are sorted approximately so that for each letter in
630 // the alphabet, we show the option whose shortname is that letter
631 // (if any) and then every longname that starts with that letter (in
632 // alphabetical order). For both, lowercase sorts before uppercase.
633 // The -z options come last.
635 DEFINE_bool(add_needed
, options::TWO_DASHES
, '\0', false,
637 N_("Do not copy DT_NEEDED tags from shared libraries"));
639 DEFINE_bool_alias(allow_multiple_definition
, muldefs
, options::TWO_DASHES
,
640 '\0', N_("Allow multiple definitions of symbols"),
641 N_("Do not allow multiple definitions"), false);
643 DEFINE_bool(allow_shlib_undefined
, options::TWO_DASHES
, '\0', false,
644 N_("Allow unresolved references in shared libraries"),
645 N_("Do not allow unresolved references in shared libraries"));
647 DEFINE_bool(apply_dynamic_relocs
, options::TWO_DASHES
, '\0', true,
648 N_("Apply link-time values for dynamic relocations (default)"),
649 N_("(aarch64 only) Do not apply link-time values "
650 "for dynamic relocations"));
652 DEFINE_bool(as_needed
, options::TWO_DASHES
, '\0', false,
653 N_("Only set DT_NEEDED for shared libraries if used"),
654 N_("Always DT_NEEDED for shared libraries"));
656 DEFINE_enum(assert, options::ONE_DASH
, '\0', NULL
,
657 N_("Ignored"), N_("[ignored]"),
658 {"definitions", "nodefinitions", "nosymbolic", "pure-text"});
660 // This should really be an "enum", but it's too easy for folks to
661 // forget to update the list as they add new targets. So we just
662 // accept any string. We'll fail later (when the string is parsed),
663 // if the target isn't actually supported.
664 DEFINE_string(format
, options::TWO_DASHES
, 'b', "elf",
665 N_("Set input format"), ("[elf,binary]"));
667 DEFINE_bool(Bdynamic
, options::ONE_DASH
, '\0', true,
668 N_("-l searches for shared libraries"), NULL
);
669 DEFINE_bool_alias(Bstatic
, Bdynamic
, options::ONE_DASH
, '\0',
670 N_("-l does not search for shared libraries"), NULL
,
672 DEFINE_bool_alias(dy
, Bdynamic
, options::ONE_DASH
, '\0',
673 N_("alias for -Bdynamic"), NULL
, false);
674 DEFINE_bool_alias(dn
, Bdynamic
, options::ONE_DASH
, '\0',
675 N_("alias for -Bstatic"), NULL
, true);
677 DEFINE_bool(be8
,options::TWO_DASHES
, '\0', false,
678 N_("Output BE8 format image"), NULL
);
680 DEFINE_bool(Bgroup
, options::ONE_DASH
, '\0', false,
681 N_("Use group name lookup rules for shared library"), NULL
);
683 DEFINE_bool(Bsymbolic
, options::ONE_DASH
, '\0', false,
684 N_("Bind defined symbols locally"), NULL
);
686 DEFINE_bool(Bsymbolic_functions
, options::ONE_DASH
, '\0', false,
687 N_("Bind defined function symbols locally"), NULL
);
689 DEFINE_optional_string(build_id
, options::TWO_DASHES
, '\0', "tree",
690 N_("Generate build ID note"),
693 DEFINE_uint64(build_id_chunk_size_for_treehash
,
694 options::TWO_DASHES
, '\0', 2 << 20,
695 N_("Chunk size for '--build-id=tree'"), N_("SIZE"));
697 DEFINE_uint64(build_id_min_file_size_for_treehash
, options::TWO_DASHES
,
699 N_("Minimum output file size for '--build-id=tree' to work"
700 " differently than '--build-id=sha1'"), N_("SIZE"));
702 DEFINE_bool(check_sections
, options::TWO_DASHES
, '\0', true,
703 N_("Check segment addresses for overlaps (default)"),
704 N_("Do not check segment addresses for overlaps"));
706 DEFINE_enum(compress_debug_sections
, options::TWO_DASHES
, '\0', "none",
707 N_("Compress .debug_* sections in the output file"),
708 ("[none,zlib,zlib-gnu,zlib-gabi]"),
709 {"none", "zlib", "zlib-gnu", "zlib-gabi"});
711 DEFINE_bool(copy_dt_needed_entries
, options::TWO_DASHES
, '\0', false,
713 N_("Do not copy DT_NEEDED tags from shared libraries"));
715 DEFINE_bool(cref
, options::TWO_DASHES
, '\0', false,
716 N_("Output cross reference table"),
717 N_("Do not output cross reference table"));
719 DEFINE_bool(ctors_in_init_array
, options::TWO_DASHES
, '\0', true,
720 N_("Use DT_INIT_ARRAY for all constructors (default)"),
721 N_("Handle constructors as directed by compiler"));
723 DEFINE_bool(define_common
, options::TWO_DASHES
, 'd', false,
724 N_("Define common symbols"),
725 N_("Do not define common symbols"));
726 DEFINE_bool(dc
, options::ONE_DASH
, '\0', false,
727 N_("Alias for -d"), NULL
);
728 DEFINE_bool(dp
, options::ONE_DASH
, '\0', false,
729 N_("Alias for -d"), NULL
);
731 DEFINE_string(debug
, options::TWO_DASHES
, '\0', "",
732 N_("Turn on debugging"),
733 N_("[all,files,script,task][,...]"));
735 DEFINE_special(defsym
, options::TWO_DASHES
, '\0',
736 N_("Define a symbol"), N_("SYMBOL=EXPRESSION"));
738 DEFINE_optional_string(demangle
, options::TWO_DASHES
, '\0', NULL
,
739 N_("Demangle C++ symbols in log messages"),
742 DEFINE_bool(no_demangle
, options::TWO_DASHES
, '\0', false,
743 N_("Do not demangle C++ symbols in log messages"),
746 DEFINE_bool(detect_odr_violations
, options::TWO_DASHES
, '\0', false,
747 N_("Look for violations of the C++ One Definition Rule"),
748 N_("Do not look for violations of the C++ One Definition Rule"));
750 DEFINE_special(discard_all
, options::TWO_DASHES
, 'x',
751 N_("Delete all local symbols"), NULL
);
752 DEFINE_special(discard_locals
, options::TWO_DASHES
, 'X',
753 N_("Delete all temporary local symbols"), NULL
);
754 DEFINE_special(discard_none
, options::TWO_DASHES
, '\0',
755 N_("Keep all local symbols"), NULL
);
757 DEFINE_bool(dynamic_list_data
, options::TWO_DASHES
, '\0', false,
758 N_("Add data symbols to dynamic symbols"), NULL
);
760 DEFINE_bool(dynamic_list_cpp_new
, options::TWO_DASHES
, '\0', false,
761 N_("Add C++ operator new/delete to dynamic symbols"), NULL
);
763 DEFINE_bool(dynamic_list_cpp_typeinfo
, options::TWO_DASHES
, '\0', false,
764 N_("Add C++ typeinfo to dynamic symbols"), NULL
);
766 DEFINE_special(dynamic_list
, options::TWO_DASHES
, '\0',
767 N_("Read a list of dynamic symbols"), N_("FILE"));
769 DEFINE_string(entry
, options::TWO_DASHES
, 'e', NULL
,
770 N_("Set program start address"), N_("ADDRESS"));
772 DEFINE_special(exclude_libs
, options::TWO_DASHES
, '\0',
773 N_("Exclude libraries from automatic export"),
774 N_(("lib,lib ...")));
776 DEFINE_bool(export_dynamic
, options::TWO_DASHES
, 'E', false,
777 N_("Export all dynamic symbols"),
778 N_("Do not export all dynamic symbols (default)"));
780 DEFINE_set(export_dynamic_symbol
, options::TWO_DASHES
, '\0',
781 N_("Export SYMBOL to dynamic symbol table"), N_("SYMBOL"));
783 DEFINE_special(EB
, options::ONE_DASH
, '\0',
784 N_("Link big-endian objects."), NULL
);
786 DEFINE_special(EL
, options::ONE_DASH
, '\0',
787 N_("Link little-endian objects."), NULL
);
789 DEFINE_bool(eh_frame_hdr
, options::TWO_DASHES
, '\0', false,
790 N_("Create exception frame header"), NULL
);
792 DEFINE_bool(enum_size_warning
, options::TWO_DASHES
, '\0', true, NULL
,
793 N_("(ARM only) Do not warn about objects with incompatible "
796 DEFINE_set(auxiliary
, options::TWO_DASHES
, 'f',
797 N_("Auxiliary filter for shared object symbol table"),
800 DEFINE_string(filter
, options::TWO_DASHES
, 'F', NULL
,
801 N_("Filter for shared object symbol table"),
804 DEFINE_bool(fatal_warnings
, options::TWO_DASHES
, '\0', false,
805 N_("Treat warnings as errors"),
806 N_("Do not treat warnings as errors"));
808 DEFINE_string(fini
, options::ONE_DASH
, '\0', "_fini",
809 N_("Call SYMBOL at unload-time"), N_("SYMBOL"));
811 DEFINE_bool(fix_cortex_a8
, options::TWO_DASHES
, '\0', false,
812 N_("(ARM only) Fix binaries for Cortex-A8 erratum."),
813 N_("(ARM only) Do not fix binaries for Cortex-A8 erratum."));
815 DEFINE_bool(fix_cortex_a53_843419
, options::TWO_DASHES
, '\0', false,
816 N_("(AArch64 only) Fix Cortex-A53 erratum 843419."),
817 N_("(AArch64 only) Do not fix Cortex-A53 erratum 843419."));
819 DEFINE_bool(fix_cortex_a53_835769
, options::TWO_DASHES
, '\0', false,
820 N_("(AArch64 only) Fix Cortex-A53 erratum 835769."),
821 N_("(AArch64 only) Do not fix Cortex-A53 erratum 835769."));
823 DEFINE_bool(fix_arm1176
, options::TWO_DASHES
, '\0', true,
824 N_("(ARM only) Fix binaries for ARM1176 erratum."),
825 N_("(ARM only) Do not fix binaries for ARM1176 erratum."));
827 DEFINE_bool(merge_exidx_entries
, options::TWO_DASHES
, '\0', true,
828 N_("(ARM only) Merge exidx entries in debuginfo."),
829 N_("(ARM only) Do not merge exidx entries in debuginfo."));
831 DEFINE_special(fix_v4bx
, options::TWO_DASHES
, '\0',
832 N_("(ARM only) Rewrite BX rn as MOV pc, rn for ARMv4"),
835 DEFINE_special(fix_v4bx_interworking
, options::TWO_DASHES
, '\0',
836 N_("(ARM only) Rewrite BX rn branch to ARMv4 interworking "
840 DEFINE_bool(long_plt
, options::TWO_DASHES
, '\0', false,
841 N_("(ARM only) Generate long PLT entries"),
842 N_("(ARM only) Do not generate long PLT entries"));
844 DEFINE_bool(g
, options::EXACTLY_ONE_DASH
, '\0', false,
845 N_("Ignored"), NULL
);
847 DEFINE_bool(gdb_index
, options::TWO_DASHES
, '\0', false,
848 N_("Generate .gdb_index section"),
849 N_("Do not generate .gdb_index section"));
851 DEFINE_bool(gnu_unique
, options::TWO_DASHES
, '\0', true,
852 N_("Enable STB_GNU_UNIQUE symbol binding (default)"),
853 N_("Disable STB_GNU_UNIQUE symbol binding"));
855 DEFINE_string(soname
, options::ONE_DASH
, 'h', NULL
,
856 N_("Set shared library name"), N_("FILENAME"));
858 DEFINE_double(hash_bucket_empty_fraction
, options::TWO_DASHES
, '\0', 0.0,
859 N_("Min fraction of empty buckets in dynamic hash"),
862 DEFINE_enum(hash_style
, options::TWO_DASHES
, '\0', "sysv",
863 N_("Dynamic hash style"), N_("[sysv,gnu,both]"),
864 {"sysv", "gnu", "both"});
866 DEFINE_string(dynamic_linker
, options::TWO_DASHES
, 'I', NULL
,
867 N_("Set dynamic linker path"), N_("PROGRAM"));
869 DEFINE_special(incremental
, options::TWO_DASHES
, '\0',
870 N_("Do an incremental link if possible; "
871 "otherwise, do a full link and prepare output "
872 "for incremental linking"), NULL
);
874 DEFINE_special(no_incremental
, options::TWO_DASHES
, '\0',
875 N_("Do a full link (default)"), NULL
);
877 DEFINE_special(incremental_full
, options::TWO_DASHES
, '\0',
878 N_("Do a full link and "
879 "prepare output for incremental linking"), NULL
);
881 DEFINE_special(incremental_update
, options::TWO_DASHES
, '\0',
882 N_("Do an incremental link; exit if not possible"), NULL
);
884 DEFINE_string(incremental_base
, options::TWO_DASHES
, '\0', NULL
,
885 N_("Set base file for incremental linking"
886 " (default is output file)"),
889 DEFINE_special(incremental_changed
, options::TWO_DASHES
, '\0',
890 N_("Assume files changed"), NULL
);
892 DEFINE_special(incremental_unchanged
, options::TWO_DASHES
, '\0',
893 N_("Assume files didn't change"), NULL
);
895 DEFINE_special(incremental_unknown
, options::TWO_DASHES
, '\0',
896 N_("Use timestamps to check files (default)"), NULL
);
898 DEFINE_special(incremental_startup_unchanged
, options::TWO_DASHES
, '\0',
899 N_("Assume startup files unchanged "
900 "(files preceding this option)"), NULL
);
902 DEFINE_percent(incremental_patch
, options::TWO_DASHES
, '\0', 10,
903 N_("Amount of extra space to allocate for patches"),
906 DEFINE_string(init
, options::ONE_DASH
, '\0', "_init",
907 N_("Call SYMBOL at load-time"), N_("SYMBOL"));
909 DEFINE_special(just_symbols
, options::TWO_DASHES
, '\0',
910 N_("Read only symbol values from FILE"), N_("FILE"));
912 DEFINE_bool(map_whole_files
, options::TWO_DASHES
, '\0',
914 N_("Map whole files to memory (default on 64-bit hosts)"),
915 N_("Map relevant file parts to memory (default on 32-bit "
917 DEFINE_bool(keep_files_mapped
, options::TWO_DASHES
, '\0', true,
918 N_("Keep files mapped across passes (default)"),
919 N_("Release mapped files after each pass"));
921 DEFINE_bool(ld_generated_unwind_info
, options::TWO_DASHES
, '\0', true,
922 N_("Generate unwind information for PLT (default)"),
923 N_("Do not generate unwind information for PLT"));
925 DEFINE_special(library
, options::TWO_DASHES
, 'l',
926 N_("Search for library LIBNAME"), N_("LIBNAME"));
928 DEFINE_dirlist(library_path
, options::TWO_DASHES
, 'L',
929 N_("Add directory to search path"), N_("DIR"));
931 DEFINE_bool(text_reorder
, options::TWO_DASHES
, '\0', true,
932 N_("Enable text section reordering for GCC section names "
934 N_("Disable text section reordering for GCC section names"));
936 DEFINE_bool(nostdlib
, options::ONE_DASH
, '\0', false,
937 N_("Only search directories specified on the command line."),
940 DEFINE_bool(rosegment
, options::TWO_DASHES
, '\0', false,
941 N_("Put read-only non-executable sections in their own segment"),
944 DEFINE_uint64(rosegment_gap
, options::TWO_DASHES
, '\0', -1U,
945 N_("Set offset between executable and read-only segments"),
948 DEFINE_string(m
, options::EXACTLY_ONE_DASH
, 'm', "",
949 N_("Set GNU linker emulation; obsolete"), N_("EMULATION"));
951 DEFINE_bool(mmap_output_file
, options::TWO_DASHES
, '\0', true,
952 N_("Map the output file for writing (default)."),
953 N_("Do not map the output file for writing."));
955 DEFINE_bool(print_map
, options::TWO_DASHES
, 'M', false,
956 N_("Write map file on standard output"), NULL
);
957 DEFINE_string(Map
, options::ONE_DASH
, '\0', NULL
, N_("Write map file"),
960 DEFINE_bool(nmagic
, options::TWO_DASHES
, 'n', false,
961 N_("Do not page align data"), NULL
);
962 DEFINE_bool(omagic
, options::EXACTLY_TWO_DASHES
, 'N', false,
963 N_("Do not page align data, do not make text readonly"),
964 N_("Page align data, make text readonly"));
966 DEFINE_enable(new_dtags
, options::EXACTLY_TWO_DASHES
, '\0', true,
967 N_("Enable use of DT_RUNPATH and DT_FLAGS"),
968 N_("Disable use of DT_RUNPATH and DT_FLAGS"));
970 DEFINE_bool(noinhibit_exec
, options::TWO_DASHES
, '\0', false,
971 N_("Create an output file even if errors occur"), NULL
);
973 DEFINE_bool_alias(no_undefined
, defs
, options::TWO_DASHES
, '\0',
974 N_("Report undefined symbols (even with --shared)"),
977 DEFINE_string(output
, options::TWO_DASHES
, 'o', "a.out",
978 N_("Set output file name"), N_("FILE"));
980 DEFINE_uint(optimize
, options::EXACTLY_ONE_DASH
, 'O', 0,
981 N_("Optimize output file size"), N_("LEVEL"));
983 DEFINE_string(oformat
, options::EXACTLY_TWO_DASHES
, '\0', "elf",
984 N_("Set output format"), N_("[binary]"));
986 DEFINE_bool(p
, options::ONE_DASH
, '\0', false,
987 N_("(ARM only) Ignore for backward compatibility"), NULL
);
989 DEFINE_bool(pie
, options::ONE_DASH
, '\0', false,
990 N_("Create a position independent executable"),
991 N_("Do not create a position independent executable"));
992 DEFINE_bool_alias(pic_executable
, pie
, options::TWO_DASHES
, '\0',
993 N_("Create a position independent executable"),
994 N_("Do not create a position independent executable"),
997 DEFINE_bool(pic_veneer
, options::TWO_DASHES
, '\0', false,
998 N_("Force PIC sequences for ARM/Thumb interworking veneers"),
1001 DEFINE_bool(pipeline_knowledge
, options::ONE_DASH
, '\0', false,
1002 NULL
, N_("(ARM only) Ignore for backward compatibility"));
1004 DEFINE_var(plt_align
, options::TWO_DASHES
, '\0', 0, "5",
1005 N_("(PowerPC64 only) Align PLT call stubs to fit cache lines"),
1006 N_("[=P2ALIGN]"), true, int, int, options::parse_uint
);
1008 DEFINE_bool(plt_static_chain
, options::TWO_DASHES
, '\0', false,
1009 N_("(PowerPC64 only) PLT call stubs should load r11"),
1010 N_("(PowerPC64 only) PLT call stubs should not load r11"));
1012 DEFINE_bool(plt_thread_safe
, options::TWO_DASHES
, '\0', false,
1013 N_("(PowerPC64 only) PLT call stubs with load-load barrier"),
1014 N_("(PowerPC64 only) PLT call stubs without barrier"));
1016 #ifdef ENABLE_PLUGINS
1017 DEFINE_special(plugin
, options::TWO_DASHES
, '\0',
1018 N_("Load a plugin library"), N_("PLUGIN"));
1019 DEFINE_special(plugin_opt
, options::TWO_DASHES
, '\0',
1020 N_("Pass an option to the plugin"), N_("OPTION"));
1023 DEFINE_bool(posix_fallocate
, options::TWO_DASHES
, '\0', true,
1024 N_("Use posix_fallocate to reserve space in the output file"
1026 N_("Use fallocate or ftruncate to reserve space."));
1028 DEFINE_bool(preread_archive_symbols
, options::TWO_DASHES
, '\0', false,
1029 N_("Preread archive symbols when multi-threaded"), NULL
);
1031 DEFINE_bool(print_output_format
, options::TWO_DASHES
, '\0', false,
1032 N_("Print default output format"), NULL
);
1034 DEFINE_string(print_symbol_counts
, options::TWO_DASHES
, '\0', NULL
,
1035 N_("Print symbols defined and used for each input"),
1038 DEFINE_bool(Qy
, options::EXACTLY_ONE_DASH
, '\0', false,
1039 N_("Ignored for SVR4 compatibility"), NULL
);
1041 DEFINE_bool(emit_relocs
, options::TWO_DASHES
, 'q', false,
1042 N_("Generate relocations in output"), NULL
);
1044 DEFINE_bool(relocatable
, options::EXACTLY_ONE_DASH
, 'r', false,
1045 N_("Generate relocatable output"), NULL
);
1046 DEFINE_bool_alias(i
, relocatable
, options::EXACTLY_ONE_DASH
, '\0',
1047 N_("Synonym for -r"), NULL
, false);
1049 DEFINE_bool(relax
, options::TWO_DASHES
, '\0', false,
1050 N_("Relax branches on certain targets"), NULL
);
1052 DEFINE_string(retain_symbols_file
, options::TWO_DASHES
, '\0', NULL
,
1053 N_("keep only symbols listed in this file"), N_("FILE"));
1055 // -R really means -rpath, but can mean --just-symbols for
1056 // compatibility with GNU ld. -rpath is always -rpath, so we list
1058 DEFINE_special(R
, options::EXACTLY_ONE_DASH
, 'R',
1059 N_("Add DIR to runtime search path"), N_("DIR"));
1061 DEFINE_dirlist(rpath
, options::ONE_DASH
, '\0',
1062 N_("Add DIR to runtime search path"), N_("DIR"));
1064 DEFINE_dirlist(rpath_link
, options::TWO_DASHES
, '\0',
1065 N_("Add DIR to link time shared library search path"),
1068 DEFINE_string(section_ordering_file
, options::TWO_DASHES
, '\0', NULL
,
1069 N_("Layout sections in the order specified."),
1072 DEFINE_special(section_start
, options::TWO_DASHES
, '\0',
1073 N_("Set address of section"), N_("SECTION=ADDRESS"));
1075 DEFINE_optional_string(sort_common
, options::TWO_DASHES
, '\0', NULL
,
1076 N_("Sort common symbols by alignment"),
1077 N_("[={ascending,descending}]"));
1079 DEFINE_enum(sort_section
, options::TWO_DASHES
, '\0', "none",
1080 N_("Sort sections by name. \'--no-text-reorder\'"
1081 " will override \'--sort-section=name\' for .text"),
1085 DEFINE_uint(spare_dynamic_tags
, options::TWO_DASHES
, '\0', 5,
1086 N_("Dynamic tag slots to reserve (default 5)"),
1089 DEFINE_bool(strip_all
, options::TWO_DASHES
, 's', false,
1090 N_("Strip all symbols"), NULL
);
1091 DEFINE_bool(strip_debug
, options::TWO_DASHES
, 'S', false,
1092 N_("Strip debugging information"), NULL
);
1093 DEFINE_bool(strip_debug_non_line
, options::TWO_DASHES
, '\0', false,
1094 N_("Emit only debug line number information"), NULL
);
1095 DEFINE_bool(strip_debug_gdb
, options::TWO_DASHES
, '\0', false,
1096 N_("Strip debug symbols that are unused by gdb "
1097 "(at least versions <= 7.4)"), NULL
);
1098 DEFINE_bool(strip_lto_sections
, options::TWO_DASHES
, '\0', true,
1099 N_("Strip LTO intermediate code sections"), NULL
);
1101 DEFINE_int(stub_group_size
, options::TWO_DASHES
, '\0', 1,
1102 N_("(ARM, PowerPC only) The maximum distance from instructions "
1103 "in a group of sections to their stubs. Negative values mean "
1104 "stubs are always after (PowerPC before) the group. 1 means "
1105 "use default size.\n"),
1108 DEFINE_bool(no_keep_memory
, options::TWO_DASHES
, '\0', false,
1109 N_("Use less memory and more disk I/O "
1110 "(included only for compatibility with GNU ld)"), NULL
);
1112 DEFINE_bool(shared
, options::ONE_DASH
, 'G', false,
1113 N_("Generate shared library"), NULL
);
1115 DEFINE_bool(Bshareable
, options::ONE_DASH
, '\0', false,
1116 N_("Generate shared library"), NULL
);
1118 DEFINE_uint(split_stack_adjust_size
, options::TWO_DASHES
, '\0', 0x4000,
1119 N_("Stack size when -fsplit-stack function calls non-split"),
1122 // This is not actually special in any way, but I need to give it
1123 // a non-standard accessor-function name because 'static' is a keyword.
1124 DEFINE_special(static, options::ONE_DASH
, '\0',
1125 N_("Do not link against shared libraries"), NULL
);
1127 DEFINE_enum(icf
, options::TWO_DASHES
, '\0', "none",
1128 N_("Identical Code Folding. "
1129 "\'--icf=safe\' Folds ctors, dtors and functions whose"
1130 " pointers are definitely not taken."),
1131 ("[none,all,safe]"),
1132 {"none", "all", "safe"});
1134 DEFINE_uint(icf_iterations
, options::TWO_DASHES
, '\0', 0,
1135 N_("Number of iterations of ICF (default 2)"), N_("COUNT"));
1137 DEFINE_bool(print_icf_sections
, options::TWO_DASHES
, '\0', false,
1138 N_("List folded identical sections on stderr"),
1139 N_("Do not list folded identical sections"));
1141 DEFINE_set(keep_unique
, options::TWO_DASHES
, '\0',
1142 N_("Do not fold this symbol during ICF"), N_("SYMBOL"));
1144 DEFINE_bool(gc_sections
, options::TWO_DASHES
, '\0', false,
1145 N_("Remove unused sections"),
1146 N_("Don't remove unused sections (default)"));
1148 DEFINE_bool(print_gc_sections
, options::TWO_DASHES
, '\0', false,
1149 N_("List removed unused sections on stderr"),
1150 N_("Do not list removed unused sections"));
1152 DEFINE_bool(stats
, options::TWO_DASHES
, '\0', false,
1153 N_("Print resource usage statistics"), NULL
);
1155 DEFINE_string(sysroot
, options::TWO_DASHES
, '\0', "",
1156 N_("Set target system root directory"), N_("DIR"));
1158 DEFINE_bool(trace
, options::TWO_DASHES
, 't', false,
1159 N_("Print the name of each input file"), NULL
);
1161 DEFINE_special(script
, options::TWO_DASHES
, 'T',
1162 N_("Read linker script"), N_("FILE"));
1164 DEFINE_bool(threads
, options::TWO_DASHES
, '\0', false,
1165 N_("Run the linker multi-threaded"),
1166 N_("Do not run the linker multi-threaded"));
1167 DEFINE_uint(thread_count
, options::TWO_DASHES
, '\0', 0,
1168 N_("Number of threads to use"), N_("COUNT"));
1169 DEFINE_uint(thread_count_initial
, options::TWO_DASHES
, '\0', 0,
1170 N_("Number of threads to use in initial pass"), N_("COUNT"));
1171 DEFINE_uint(thread_count_middle
, options::TWO_DASHES
, '\0', 0,
1172 N_("Number of threads to use in middle pass"), N_("COUNT"));
1173 DEFINE_uint(thread_count_final
, options::TWO_DASHES
, '\0', 0,
1174 N_("Number of threads to use in final pass"), N_("COUNT"));
1176 DEFINE_uint64(Tbss
, options::ONE_DASH
, '\0', -1U,
1177 N_("Set the address of the bss segment"), N_("ADDRESS"));
1178 DEFINE_uint64(Tdata
, options::ONE_DASH
, '\0', -1U,
1179 N_("Set the address of the data segment"), N_("ADDRESS"));
1180 DEFINE_uint64(Ttext
, options::ONE_DASH
, '\0', -1U,
1181 N_("Set the address of the text segment"), N_("ADDRESS"));
1182 DEFINE_uint64_alias(Ttext_segment
, Ttext
, options::ONE_DASH
, '\0',
1183 N_("Set the address of the text segment"),
1185 DEFINE_uint64(Trodata_segment
, options::ONE_DASH
, '\0', -1U,
1186 N_("Set the address of the rodata segment"), N_("ADDRESS"));
1188 DEFINE_bool(toc_optimize
, options::TWO_DASHES
, '\0', true,
1189 N_("(PowerPC64 only) Optimize TOC code sequences"),
1190 N_("(PowerPC64 only) Don't optimize TOC code sequences"));
1192 DEFINE_bool(toc_sort
, options::TWO_DASHES
, '\0', true,
1193 N_("(PowerPC64 only) Sort TOC and GOT sections"),
1194 N_("(PowerPC64 only) Don't sort TOC and GOT sections"));
1196 DEFINE_set(undefined
, options::TWO_DASHES
, 'u',
1197 N_("Create undefined reference to SYMBOL"), N_("SYMBOL"));
1199 DEFINE_enum(unresolved_symbols
, options::TWO_DASHES
, '\0', NULL
,
1200 N_("How to handle unresolved symbols"),
1201 ("ignore-all,report-all,ignore-in-object-files,"
1202 "ignore-in-shared-libs"),
1203 {"ignore-all", "report-all", "ignore-in-object-files",
1204 "ignore-in-shared-libs"});
1206 DEFINE_bool(verbose
, options::TWO_DASHES
, '\0', false,
1207 N_("Synonym for --debug=files"), NULL
);
1209 DEFINE_special(version_script
, options::TWO_DASHES
, '\0',
1210 N_("Read version script"), N_("FILE"));
1212 DEFINE_bool(warn_common
, options::TWO_DASHES
, '\0', false,
1213 N_("Warn about duplicate common symbols"),
1214 N_("Do not warn about duplicate common symbols (default)"));
1216 DEFINE_bool(warn_constructors
, options::TWO_DASHES
, '\0', false,
1217 N_("Ignored"), N_("Ignored"));
1219 DEFINE_bool(warn_execstack
, options::TWO_DASHES
, '\0', false,
1220 N_("Warn if the stack is executable"),
1221 N_("Do not warn if the stack is executable (default)"));
1223 DEFINE_bool(warn_mismatch
, options::TWO_DASHES
, '\0', true,
1224 NULL
, N_("Don't warn about mismatched input files"));
1226 DEFINE_bool(warn_multiple_gp
, options::TWO_DASHES
, '\0', false,
1227 N_("Ignored"), NULL
);
1229 DEFINE_bool(warn_search_mismatch
, options::TWO_DASHES
, '\0', true,
1230 N_("Warn when skipping an incompatible library"),
1231 N_("Don't warn when skipping an incompatible library"));
1233 DEFINE_bool(warn_shared_textrel
, options::TWO_DASHES
, '\0', false,
1234 N_("Warn if text segment is not shareable"),
1235 N_("Do not warn if text segment is not shareable (default)"));
1237 DEFINE_bool(warn_unresolved_symbols
, options::TWO_DASHES
, '\0', false,
1238 N_("Report unresolved symbols as warnings"),
1240 DEFINE_bool_alias(error_unresolved_symbols
, warn_unresolved_symbols
,
1241 options::TWO_DASHES
, '\0',
1242 N_("Report unresolved symbols as errors"),
1244 DEFINE_bool(weak_unresolved_symbols
, options::TWO_DASHES
, '\0', false,
1245 N_("Convert unresolved symbols to weak references"),
1248 DEFINE_bool(wchar_size_warning
, options::TWO_DASHES
, '\0', true, NULL
,
1249 N_("(ARM only) Do not warn about objects with incompatible "
1252 DEFINE_bool(whole_archive
, options::TWO_DASHES
, '\0', false,
1253 N_("Include all archive contents"),
1254 N_("Include only needed archive contents"));
1256 DEFINE_set(wrap
, options::TWO_DASHES
, '\0',
1257 N_("Use wrapper functions for SYMBOL"), N_("SYMBOL"));
1259 DEFINE_set(trace_symbol
, options::TWO_DASHES
, 'y',
1260 N_("Trace references to symbol"), N_("SYMBOL"));
1262 DEFINE_bool(undefined_version
, options::TWO_DASHES
, '\0', true,
1263 N_("Allow unused version in script (default)"),
1264 N_("Do not allow unused version in script"));
1266 DEFINE_string(Y
, options::EXACTLY_ONE_DASH
, 'Y', "",
1267 N_("Default search path for Solaris compatibility"),
1270 DEFINE_special(start_group
, options::TWO_DASHES
, '(',
1271 N_("Start a library search group"), NULL
);
1272 DEFINE_special(end_group
, options::TWO_DASHES
, ')',
1273 N_("End a library search group"), NULL
);
1276 DEFINE_special(start_lib
, options::TWO_DASHES
, '\0',
1277 N_("Start a library"), NULL
);
1278 DEFINE_special(end_lib
, options::TWO_DASHES
, '\0',
1279 N_("End a library "), NULL
);
1281 DEFINE_string(fuse_ld
, options::ONE_DASH
, '\0', "",
1282 N_("Ignored for GCC linker option compatibility"),
1287 DEFINE_bool(combreloc
, options::DASH_Z
, '\0', true,
1288 N_("Sort dynamic relocs"),
1289 N_("Do not sort dynamic relocs"));
1290 DEFINE_uint64(common_page_size
, options::DASH_Z
, '\0', 0,
1291 N_("Set common page size to SIZE"), N_("SIZE"));
1292 DEFINE_bool(defs
, options::DASH_Z
, '\0', false,
1293 N_("Report undefined symbols (even with --shared)"),
1295 DEFINE_bool(execstack
, options::DASH_Z
, '\0', false,
1296 N_("Mark output as requiring executable stack"), NULL
);
1297 DEFINE_bool(global
, options::DASH_Z
, '\0', false,
1298 N_("Make symbols in DSO available for subsequently loaded "
1300 DEFINE_bool(initfirst
, options::DASH_Z
, '\0', false,
1301 N_("Mark DSO to be initialized first at runtime"),
1303 DEFINE_bool(interpose
, options::DASH_Z
, '\0', false,
1304 N_("Mark object to interpose all DSOs but executable"),
1306 DEFINE_bool_alias(lazy
, now
, options::DASH_Z
, '\0',
1307 N_("Mark object for lazy runtime binding (default)"),
1309 DEFINE_bool(loadfltr
, options::DASH_Z
, '\0', false,
1310 N_("Mark object requiring immediate process"),
1312 DEFINE_uint64(max_page_size
, options::DASH_Z
, '\0', 0,
1313 N_("Set maximum page size to SIZE"), N_("SIZE"));
1314 DEFINE_bool(muldefs
, options::DASH_Z
, '\0', false,
1315 N_("Allow multiple definitions of symbols"),
1317 // copyreloc is here in the list because there is only -z
1318 // nocopyreloc, not -z copyreloc.
1319 DEFINE_bool(copyreloc
, options::DASH_Z
, '\0', true,
1321 N_("Do not create copy relocs"));
1322 DEFINE_bool(nodefaultlib
, options::DASH_Z
, '\0', false,
1323 N_("Mark object not to use default search paths"),
1325 DEFINE_bool(nodelete
, options::DASH_Z
, '\0', false,
1326 N_("Mark DSO non-deletable at runtime"),
1328 DEFINE_bool(nodlopen
, options::DASH_Z
, '\0', false,
1329 N_("Mark DSO not available to dlopen"),
1331 DEFINE_bool(nodump
, options::DASH_Z
, '\0', false,
1332 N_("Mark DSO not available to dldump"),
1334 DEFINE_bool(noexecstack
, options::DASH_Z
, '\0', false,
1335 N_("Mark output as not requiring executable stack"), NULL
);
1336 DEFINE_bool(now
, options::DASH_Z
, '\0', false,
1337 N_("Mark object for immediate function binding"),
1339 DEFINE_bool(origin
, options::DASH_Z
, '\0', false,
1340 N_("Mark DSO to indicate that needs immediate $ORIGIN "
1341 "processing at runtime"), NULL
);
1342 DEFINE_bool(relro
, options::DASH_Z
, '\0', DEFAULT_LD_Z_RELRO
,
1343 N_("Where possible mark variables read-only after relocation"),
1344 N_("Don't mark variables read-only after relocation"));
1345 DEFINE_uint64(stack_size
, options::DASH_Z
, '\0', 0,
1346 N_("Set PT_GNU_STACK segment p_memsz to SIZE"), N_("SIZE"));
1347 DEFINE_bool(text
, options::DASH_Z
, '\0', false,
1348 N_("Do not permit relocations in read-only segments"),
1349 N_("Permit relocations in read-only segments (default)"));
1350 DEFINE_bool_alias(textoff
, text
, options::DASH_Z
, '\0',
1351 N_("Permit relocations in read-only segments (default)"),
1355 typedef options::Dir_list Dir_list
;
1359 // Does post-processing on flags, making sure they all have
1360 // non-conflicting values. Also converts some flags from their
1361 // "standard" types (string, etc), to another type (enum, DirList),
1362 // which can be accessed via a separate method. Dies if it notices
1366 // True if we printed the version information.
1368 printed_version() const
1369 { return this->printed_version_
; }
1371 // The macro defines output() (based on --output), but that's a
1372 // generic name. Provide this alternative name, which is clearer.
1374 output_file_name() const
1375 { return this->output(); }
1377 // This is not defined via a flag, but combines flags to say whether
1378 // the output is position-independent or not.
1380 output_is_position_independent() const
1381 { return this->shared() || this->pie(); }
1383 // Return true if the output is something that can be exec()ed, such
1384 // as a static executable, or a position-dependent or
1385 // position-independent executable, but not a dynamic library or an
1388 output_is_executable() const
1389 { return !this->shared() && !this->relocatable(); }
1391 // This would normally be static(), and defined automatically, but
1392 // since static is a keyword, we need to come up with our own name.
1397 // In addition to getting the input and output formats as a string
1398 // (via format() and oformat()), we also give access as an enum.
1403 // Straight binary format.
1404 OBJECT_FORMAT_BINARY
1407 // Convert a string to an Object_format. Gives an error if the
1408 // string is not recognized.
1409 static Object_format
1410 string_to_object_format(const char* arg
);
1412 // Note: these functions are not very fast.
1413 Object_format
format_enum() const;
1414 Object_format
oformat_enum() const;
1416 // Return whether FILENAME is in a system directory.
1418 is_in_system_directory(const std::string
& name
) const;
1420 // RETURN whether SYMBOL_NAME should be kept, according to symbols_to_retain_.
1422 should_retain_symbol(const char* symbol_name
) const
1424 if (symbols_to_retain_
.empty()) // means flag wasn't specified
1426 return symbols_to_retain_
.find(symbol_name
) != symbols_to_retain_
.end();
1429 // These are the best way to get access to the execstack state,
1430 // not execstack() and noexecstack() which are hard to use properly.
1432 is_execstack_set() const
1433 { return this->execstack_status_
!= EXECSTACK_FROM_INPUT
; }
1436 is_stack_executable() const
1437 { return this->execstack_status_
== EXECSTACK_YES
; }
1441 { return this->icf_status_
!= ICF_NONE
; }
1444 icf_safe_folding() const
1445 { return this->icf_status_
== ICF_SAFE
; }
1447 // The --demangle option takes an optional string, and there is also
1448 // a --no-demangle option. This is the best way to decide whether
1449 // to demangle or not.
1452 { return this->do_demangle_
; }
1454 // Returns TRUE if any plugin libraries have been loaded.
1457 { return this->plugins_
!= NULL
; }
1459 // Return a pointer to the plugin manager.
1462 { return this->plugins_
; }
1464 // True iff SYMBOL was found in the file specified by dynamic-list.
1466 in_dynamic_list(const char* symbol
) const
1467 { return this->dynamic_list_
.version_script_info()->symbol_is_local(symbol
); }
1469 // True if a --dynamic-list script was provided.
1471 have_dynamic_list() const
1472 { return this->have_dynamic_list_
; }
1474 // Finalize the dynamic list.
1476 finalize_dynamic_list()
1477 { this->dynamic_list_
.version_script_info()->finalize(); }
1479 // The mode selected by the --incremental options.
1480 enum Incremental_mode
1482 // No incremental linking (--no-incremental).
1484 // Incremental update only (--incremental-update).
1486 // Force a full link, but prepare for subsequent incremental link
1487 // (--incremental-full).
1489 // Incremental update if possible, fallback to full link (--incremental).
1493 // The incremental linking mode.
1495 incremental_mode() const
1496 { return this->incremental_mode_
; }
1498 // The disposition given by the --incremental-changed,
1499 // --incremental-unchanged or --incremental-unknown option. The
1500 // value may change as we proceed parsing the command line flags.
1501 Incremental_disposition
1502 incremental_disposition() const
1503 { return this->incremental_disposition_
; }
1505 // The disposition to use for startup files (those that precede the
1506 // first --incremental-changed, etc. option).
1507 Incremental_disposition
1508 incremental_startup_disposition() const
1509 { return this->incremental_startup_disposition_
; }
1511 // Return true if S is the name of a library excluded from automatic
1514 check_excluded_libs(const std::string
&s
) const;
1516 // If an explicit start address was given for section SECNAME with
1517 // the --section-start option, return true and set *PADDR to the
1518 // address. Otherwise return false.
1520 section_start(const char* secname
, uint64_t* paddr
) const;
1522 // Return whether any --section-start option was used.
1524 any_section_start() const
1525 { return !this->section_starts_
.empty(); }
1529 // Leave original instruction.
1531 // Replace instruction.
1533 // Generate an interworking veneer.
1534 FIX_V4BX_INTERWORKING
1539 { return (this->fix_v4bx_
); }
1550 { return this->endianness_
; }
1554 { return this->discard_locals_
== DISCARD_ALL
; }
1557 discard_locals() const
1558 { return this->discard_locals_
== DISCARD_LOCALS
; }
1561 discard_sec_merge() const
1562 { return this->discard_locals_
== DISCARD_SEC_MERGE
; }
1565 // Don't copy this structure.
1566 General_options(const General_options
&);
1567 General_options
& operator=(const General_options
&);
1569 // What local symbols to discard.
1572 // Locals in merge sections (default).
1574 // None (--discard-none).
1576 // Temporary locals (--discard-locals/-X).
1578 // All locals (--discard-all/-x).
1582 // Whether to mark the stack as executable.
1585 // Not set on command line.
1586 EXECSTACK_FROM_INPUT
,
1587 // Mark the stack as executable (-z execstack).
1589 // Mark the stack as not executable (-z noexecstack).
1595 // Do not fold any functions (Default or --icf=none).
1597 // All functions are candidates for folding. (--icf=all).
1599 // Only ctors and dtors are candidates for folding. (--icf=safe).
1604 set_icf_status(Icf_status value
)
1605 { this->icf_status_
= value
; }
1608 set_execstack_status(Execstack value
)
1609 { this->execstack_status_
= value
; }
1612 set_do_demangle(bool value
)
1613 { this->do_demangle_
= value
; }
1616 set_static(bool value
)
1617 { static_
= value
; }
1619 // These are called by finalize() to set up the search-path correctly.
1621 add_to_library_path_with_sysroot(const std::string
& arg
)
1622 { this->add_search_directory_to_library_path(Search_directory(arg
, true)); }
1624 // Apply any sysroot to the directory lists.
1628 // Add a plugin and its arguments to the list of plugins.
1630 add_plugin(const char* filename
);
1632 // Add a plugin option.
1634 add_plugin_option(const char* opt
);
1636 // Whether we printed version information.
1637 bool printed_version_
;
1638 // Whether to mark the stack as executable.
1639 Execstack execstack_status_
;
1640 // Whether to do code folding.
1641 Icf_status icf_status_
;
1642 // Whether to do a static link.
1644 // Whether to do demangling.
1646 // List of plugin libraries.
1647 Plugin_manager
* plugins_
;
1648 // The parsed output of --dynamic-list files. For convenience in
1649 // script.cc, we store this as a Script_options object, even though
1650 // we only use a single Version_tree from it.
1651 Script_options dynamic_list_
;
1652 // Whether a --dynamic-list file was provided.
1653 bool have_dynamic_list_
;
1654 // The incremental linking mode.
1655 Incremental_mode incremental_mode_
;
1656 // The disposition given by the --incremental-changed,
1657 // --incremental-unchanged or --incremental-unknown option. The
1658 // value may change as we proceed parsing the command line flags.
1659 Incremental_disposition incremental_disposition_
;
1660 // The disposition to use for startup files (those marked
1661 // INCREMENTAL_STARTUP).
1662 Incremental_disposition incremental_startup_disposition_
;
1663 // Whether we have seen one of the options that require incremental
1664 // build (--incremental-changed, --incremental-unchanged,
1665 // --incremental-unknown, or --incremental-startup-unchanged).
1666 bool implicit_incremental_
;
1667 // Libraries excluded from automatic export, via --exclude-libs.
1668 Unordered_set
<std::string
> excluded_libs_
;
1669 // List of symbol-names to keep, via -retain-symbol-info.
1670 Unordered_set
<std::string
> symbols_to_retain_
;
1671 // Map from section name to address from --section-start.
1672 std::map
<std::string
, uint64_t> section_starts_
;
1673 // Whether to process armv4 bx instruction relocation.
1676 Endianness endianness_
;
1677 // What local symbols to discard.
1678 Discard_locals discard_locals_
;
1681 // The position-dependent options. We use this to store the state of
1682 // the commandline at a particular point in parsing for later
1683 // reference. For instance, if we see "ld --whole-archive foo.a
1684 // --no-whole-archive," we want to store the whole-archive option with
1685 // foo.a, so when the time comes to parse foo.a we know we should do
1686 // it in whole-archive mode. We could store all of General_options,
1687 // but that's big, so we just pick the subset of flags that actually
1688 // change in a position-dependent way.
1690 #define DEFINE_posdep(varname__, type__) \
1694 { return this->varname__##_; } \
1697 set_##varname__(type__ value) \
1698 { this->varname__##_ = value; } \
1702 class Position_dependent_options
1705 Position_dependent_options(const General_options
& options
1706 = Position_dependent_options::default_options_
)
1707 { copy_from_options(options
); }
1709 void copy_from_options(const General_options
& options
)
1711 this->set_as_needed(options
.as_needed());
1712 this->set_Bdynamic(options
.Bdynamic());
1713 this->set_format_enum(options
.format_enum());
1714 this->set_whole_archive(options
.whole_archive());
1715 this->set_incremental_disposition(options
.incremental_disposition());
1718 DEFINE_posdep(as_needed
, bool);
1719 DEFINE_posdep(Bdynamic
, bool);
1720 DEFINE_posdep(format_enum
, General_options::Object_format
);
1721 DEFINE_posdep(whole_archive
, bool);
1722 DEFINE_posdep(incremental_disposition
, Incremental_disposition
);
1725 // This is a General_options with everything set to its default
1726 // value. A Position_dependent_options created with no argument
1727 // will take its values from here.
1728 static General_options default_options_
;
1732 // A single file or library argument from the command line.
1734 class Input_file_argument
1737 enum Input_file_type
1739 // A regular file, name used as-is, not searched.
1740 INPUT_FILE_TYPE_FILE
,
1741 // A library name. When used, "lib" will be prepended and ".so" or
1742 // ".a" appended to make a filename, and that filename will be searched
1743 // for using the -L paths.
1744 INPUT_FILE_TYPE_LIBRARY
,
1745 // A regular file, name used as-is, but searched using the -L paths.
1746 INPUT_FILE_TYPE_SEARCHED_FILE
1749 // name: file name or library name
1750 // type: the type of this input file.
1751 // extra_search_path: an extra directory to look for the file, prior
1752 // to checking the normal library search path. If this is "",
1753 // then no extra directory is added.
1754 // just_symbols: whether this file only defines symbols.
1755 // options: The position dependent options at this point in the
1756 // command line, such as --whole-archive.
1757 Input_file_argument()
1758 : name_(), type_(INPUT_FILE_TYPE_FILE
), extra_search_path_(""),
1759 just_symbols_(false), options_(), arg_serial_(0)
1762 Input_file_argument(const char* name
, Input_file_type type
,
1763 const char* extra_search_path
,
1765 const Position_dependent_options
& options
)
1766 : name_(name
), type_(type
), extra_search_path_(extra_search_path
),
1767 just_symbols_(just_symbols
), options_(options
), arg_serial_(0)
1770 // You can also pass in a General_options instance instead of a
1771 // Position_dependent_options. In that case, we extract the
1772 // position-independent vars from the General_options and only store
1774 Input_file_argument(const char* name
, Input_file_type type
,
1775 const char* extra_search_path
,
1777 const General_options
& options
)
1778 : name_(name
), type_(type
), extra_search_path_(extra_search_path
),
1779 just_symbols_(just_symbols
), options_(options
), arg_serial_(0)
1784 { return this->name_
.c_str(); }
1786 const Position_dependent_options
&
1788 { return this->options_
; }
1792 { return type_
== INPUT_FILE_TYPE_LIBRARY
; }
1795 is_searched_file() const
1796 { return type_
== INPUT_FILE_TYPE_SEARCHED_FILE
; }
1799 extra_search_path() const
1801 return (this->extra_search_path_
.empty()
1803 : this->extra_search_path_
.c_str());
1806 // Return whether we should only read symbols from this file.
1808 just_symbols() const
1809 { return this->just_symbols_
; }
1811 // Return whether this file may require a search using the -L
1814 may_need_search() const
1816 return (this->is_lib()
1817 || this->is_searched_file()
1818 || !this->extra_search_path_
.empty());
1821 // Set the serial number for this argument.
1823 set_arg_serial(unsigned int arg_serial
)
1824 { this->arg_serial_
= arg_serial
; }
1826 // Get the serial number.
1829 { return this->arg_serial_
; }
1832 // We use std::string, not const char*, here for convenience when
1833 // using script files, so that we do not have to preserve the string
1836 Input_file_type type_
;
1837 std::string extra_search_path_
;
1839 Position_dependent_options options_
;
1840 // A unique index for this file argument in the argument list.
1841 unsigned int arg_serial_
;
1844 // A file or library, or a group, from the command line.
1846 class Input_argument
1849 // Create a file or library argument.
1850 explicit Input_argument(Input_file_argument file
)
1851 : is_file_(true), file_(file
), group_(NULL
), lib_(NULL
), script_info_(NULL
)
1854 // Create a group argument.
1855 explicit Input_argument(Input_file_group
* group
)
1856 : is_file_(false), group_(group
), lib_(NULL
), script_info_(NULL
)
1859 // Create a lib argument.
1860 explicit Input_argument(Input_file_lib
* lib
)
1861 : is_file_(false), group_(NULL
), lib_(lib
), script_info_(NULL
)
1864 // Return whether this is a file.
1867 { return this->is_file_
; }
1869 // Return whether this is a group.
1872 { return !this->is_file_
&& this->lib_
== NULL
; }
1874 // Return whether this is a lib.
1877 { return this->lib_
!= NULL
; }
1879 // Return the information about the file.
1880 const Input_file_argument
&
1883 gold_assert(this->is_file_
);
1887 // Return the information about the group.
1888 const Input_file_group
*
1891 gold_assert(!this->is_file_
);
1892 return this->group_
;
1898 gold_assert(!this->is_file_
);
1899 return this->group_
;
1902 // Return the information about the lib.
1903 const Input_file_lib
*
1906 gold_assert(!this->is_file_
);
1907 gold_assert(this->lib_
);
1914 gold_assert(!this->is_file_
);
1915 gold_assert(this->lib_
);
1919 // If a script generated this argument, store a pointer to the script info.
1920 // Currently used only for recording incremental link information.
1922 set_script_info(Script_info
* info
)
1923 { this->script_info_
= info
; }
1927 { return this->script_info_
; }
1931 Input_file_argument file_
;
1932 Input_file_group
* group_
;
1933 Input_file_lib
* lib_
;
1934 Script_info
* script_info_
;
1937 typedef std::vector
<Input_argument
> Input_argument_list
;
1939 // A group from the command line. This is a set of arguments within
1940 // --start-group ... --end-group.
1942 class Input_file_group
1945 typedef Input_argument_list::const_iterator const_iterator
;
1951 // Add a file to the end of the group.
1953 add_file(const Input_file_argument
& arg
)
1955 this->files_
.push_back(Input_argument(arg
));
1956 return this->files_
.back();
1959 // Iterators to iterate over the group contents.
1963 { return this->files_
.begin(); }
1967 { return this->files_
.end(); }
1970 Input_argument_list files_
;
1973 // A lib from the command line. This is a set of arguments within
1974 // --start-lib ... --end-lib.
1976 class Input_file_lib
1979 typedef Input_argument_list::const_iterator const_iterator
;
1981 Input_file_lib(const Position_dependent_options
& options
)
1982 : files_(), options_(options
)
1985 // Add a file to the end of the lib.
1987 add_file(const Input_file_argument
& arg
)
1989 this->files_
.push_back(Input_argument(arg
));
1990 return this->files_
.back();
1993 const Position_dependent_options
&
1995 { return this->options_
; }
1997 // Iterators to iterate over the lib contents.
2001 { return this->files_
.begin(); }
2005 { return this->files_
.end(); }
2009 { return this->files_
.size(); }
2012 Input_argument_list files_
;
2013 Position_dependent_options options_
;
2016 // A list of files from the command line or a script.
2018 class Input_arguments
2021 typedef Input_argument_list::const_iterator const_iterator
;
2024 : input_argument_list_(), in_group_(false), in_lib_(false), file_count_(0)
2029 add_file(Input_file_argument
& arg
);
2031 // Start a group (the --start-group option).
2035 // End a group (the --end-group option).
2039 // Start a lib (the --start-lib option).
2041 start_lib(const Position_dependent_options
&);
2043 // End a lib (the --end-lib option).
2047 // Return whether we are currently in a group.
2050 { return this->in_group_
; }
2052 // Return whether we are currently in a lib.
2055 { return this->in_lib_
; }
2057 // The number of entries in the list.
2060 { return this->input_argument_list_
.size(); }
2062 // Iterators to iterate over the list of input files.
2066 { return this->input_argument_list_
.begin(); }
2070 { return this->input_argument_list_
.end(); }
2072 // Return whether the list is empty.
2075 { return this->input_argument_list_
.empty(); }
2077 // Return the number of input files. This may be larger than
2078 // input_argument_list_.size(), because of files that are part
2079 // of groups or libs.
2081 number_of_input_files() const
2082 { return this->file_count_
; }
2085 Input_argument_list input_argument_list_
;
2088 unsigned int file_count_
;
2092 // All the information read from the command line. These are held in
2093 // three separate structs: one to hold the options (--foo), one to
2094 // hold the filenames listed on the commandline, and one to hold
2095 // linker script information. This third is not a subset of the other
2096 // two because linker scripts can be specified either as options (via
2097 // -T) or as a file.
2102 typedef Input_arguments::const_iterator const_iterator
;
2106 // Process the command line options. This will exit with an
2107 // appropriate error message if an unrecognized option is seen.
2109 process(int argc
, const char** argv
);
2111 // Process one command-line option. This takes the index of argv to
2112 // process, and returns the index for the next option. no_more_options
2113 // is set to true if argv[i] is "--".
2115 process_one_option(int argc
, const char** argv
, int i
,
2116 bool* no_more_options
);
2118 // Get the general options.
2119 const General_options
&
2121 { return this->options_
; }
2123 // Get the position dependent options.
2124 const Position_dependent_options
&
2125 position_dependent_options() const
2126 { return this->position_options_
; }
2128 // Get the linker-script options.
2131 { return this->script_options_
; }
2133 // Finalize the version-script options and return them.
2134 const Version_script_info
&
2137 // Get the input files.
2140 { return this->inputs_
; }
2142 // The number of input files.
2144 number_of_input_files() const
2145 { return this->inputs_
.number_of_input_files(); }
2147 // Iterators to iterate over the list of input files.
2151 { return this->inputs_
.begin(); }
2155 { return this->inputs_
.end(); }
2158 Command_line(const Command_line
&);
2159 Command_line
& operator=(const Command_line
&);
2161 // This is a dummy class to provide a constructor that runs before
2162 // the constructor for the General_options. The Pre_options constructor
2163 // is used as a hook to set the flag enabling the options to register
2165 struct Pre_options
{
2169 // This must come before options_!
2170 Pre_options pre_options_
;
2171 General_options options_
;
2172 Position_dependent_options position_options_
;
2173 Script_options script_options_
;
2174 Input_arguments inputs_
;
2177 } // End namespace gold.
2179 #endif // !defined(GOLD_OPTIONS_H)