| // options.h -- handle command line options for gold -*- C++ -*- |
| |
| // Copyright (C) 2006-2024 Free Software Foundation, Inc. |
| // Written by Ian Lance Taylor <iant@google.com>. |
| |
| // This file is part of gold. |
| |
| // This program is free software; you can redistribute it and/or modify |
| // it under the terms of the GNU General Public License as published by |
| // the Free Software Foundation; either version 3 of the License, or |
| // (at your option) any later version. |
| |
| // This program is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License |
| // along with this program; if not, write to the Free Software |
| // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| // MA 02110-1301, USA. |
| |
| // General_options (from Command_line::options()) |
| // All the options (a.k.a. command-line flags) |
| // Input_argument (from Command_line::inputs()) |
| // The list of input files, including -l options. |
| // Command_line |
| // Everything we get from the command line -- the General_options |
| // plus the Input_arguments. |
| // |
| // There are also some smaller classes, such as |
| // Position_dependent_options which hold a subset of General_options |
| // that change as options are parsed (as opposed to the usual behavior |
| // of the last instance of that option specified on the commandline wins). |
| |
| #ifndef GOLD_OPTIONS_H |
| #define GOLD_OPTIONS_H |
| |
| #include <cstdlib> |
| #include <cstring> |
| #include <list> |
| #include <map> |
| #include <string> |
| #include <vector> |
| |
| #include "elfcpp.h" |
| #include "script.h" |
| |
| namespace gold |
| { |
| |
| class Command_line; |
| class General_options; |
| class Search_directory; |
| class Input_file_group; |
| class Input_file_lib; |
| class Position_dependent_options; |
| class Target; |
| class Plugin_manager; |
| class Script_info; |
| |
| // Incremental build action for a specific file, as selected by the user. |
| |
| enum Incremental_disposition |
| { |
| // Startup files that appear before the first disposition option. |
| // These will default to INCREMENTAL_CHECK unless the |
| // --incremental-startup-unchanged option is given. |
| // (For files added implicitly by gcc before any user options.) |
| INCREMENTAL_STARTUP, |
| // Determine the status from the timestamp (default). |
| INCREMENTAL_CHECK, |
| // Assume the file changed from the previous build. |
| INCREMENTAL_CHANGED, |
| // Assume the file didn't change from the previous build. |
| INCREMENTAL_UNCHANGED |
| }; |
| |
| // The nested namespace is to contain all the global variables and |
| // structs that need to be defined in the .h file, but do not need to |
| // be used outside this class. |
| namespace options |
| { |
| typedef std::vector<Search_directory> Dir_list; |
| typedef Unordered_set<std::string> String_set; |
| |
| // These routines convert from a string option to various types. |
| // Each gives a fatal error if it cannot parse the argument. |
| |
| extern void |
| parse_bool(const char* option_name, const char* arg, bool* retval); |
| |
| extern void |
| parse_int(const char* option_name, const char* arg, int* retval); |
| |
| extern void |
| parse_uint(const char* option_name, const char* arg, int* retval); |
| |
| extern void |
| parse_uint64(const char* option_name, const char* arg, uint64_t* retval); |
| |
| extern void |
| parse_double(const char* option_name, const char* arg, double* retval); |
| |
| extern void |
| parse_percent(const char* option_name, const char* arg, double* retval); |
| |
| extern void |
| parse_string(const char* option_name, const char* arg, const char** retval); |
| |
| extern void |
| parse_optional_string(const char* option_name, const char* arg, |
| const char** retval); |
| |
| extern void |
| parse_dirlist(const char* option_name, const char* arg, Dir_list* retval); |
| |
| extern void |
| parse_set(const char* option_name, const char* arg, String_set* retval); |
| |
| extern void |
| parse_choices(const char* option_name, const char* arg, const char** retval, |
| const char* choices[], int num_choices); |
| |
| struct Struct_var; |
| |
| // Most options have both a shortname (one letter) and a longname. |
| // This enum controls how many dashes are expected for longname access |
| // -- shortnames always use one dash. Most longnames will accept |
| // either one dash or two; the only difference between ONE_DASH and |
| // TWO_DASHES is how we print the option in --help. However, some |
| // longnames require two dashes, and some require only one. The |
| // special value DASH_Z means that the option is preceded by "-z". |
| enum Dashes |
| { |
| ONE_DASH, TWO_DASHES, EXACTLY_ONE_DASH, EXACTLY_TWO_DASHES, DASH_Z |
| }; |
| |
| // LONGNAME is the long-name of the option with dashes converted to |
| // underscores, or else the short-name if the option has no long-name. |
| // It is never the empty string. |
| // DASHES is an instance of the Dashes enum: ONE_DASH, TWO_DASHES, etc. |
| // SHORTNAME is the short-name of the option, as a char, or '\0' if the |
| // option has no short-name. If the option has no long-name, you |
| // should specify the short-name in *both* VARNAME and here. |
| // DEFAULT_VALUE is the value of the option if not specified on the |
| // commandline, as a string. |
| // HELPSTRING is the descriptive text used with the option via --help |
| // HELPARG is how you define the argument to the option. |
| // --help output is "-shortname HELPARG, --longname HELPARG: HELPSTRING" |
| // HELPARG should be NULL iff the option is a bool and takes no arg. |
| // OPTIONAL_ARG is true if this option takes an optional argument. An |
| // optional argument must be specifid as --OPTION=VALUE, not |
| // --OPTION VALUE. |
| // READER provides parse_to_value, which is a function that will convert |
| // a char* argument into the proper type and store it in some variable. |
| // IS_DEFAULT is true for boolean options that are on by default, |
| // and thus should have "(default)" printed with the helpstring. |
| // A One_option struct initializes itself with the global list of options |
| // at constructor time, so be careful making one of these. |
| struct One_option |
| { |
| std::string longname; |
| Dashes dashes; |
| char shortname; |
| const char* default_value; |
| const char* helpstring; |
| const char* helparg; |
| bool optional_arg; |
| Struct_var* reader; |
| bool is_default; |
| |
| One_option(const char* ln, Dashes d, char sn, const char* dv, |
| const char* hs, const char* ha, bool oa, Struct_var* r, |
| bool id) |
| : longname(ln), dashes(d), shortname(sn), default_value(dv ? dv : ""), |
| helpstring(hs), helparg(ha), optional_arg(oa), reader(r), |
| is_default(id) |
| { |
| // In longname, we convert all underscores to dashes, since GNU |
| // style uses dashes in option names. longname is likely to have |
| // underscores in it because it's also used to declare a C++ |
| // function. |
| const char* pos = strchr(this->longname.c_str(), '_'); |
| for (; pos; pos = strchr(pos, '_')) |
| this->longname[pos - this->longname.c_str()] = '-'; |
| |
| // We only register ourselves if our helpstring is not NULL. This |
| // is to support the "no-VAR" boolean variables, which we |
| // conditionally turn on by defining "no-VAR" help text. |
| if (this->helpstring) |
| this->register_option(); |
| } |
| |
| // This option takes an argument iff helparg is not NULL. |
| bool |
| takes_argument() const |
| { return this->helparg != NULL; } |
| |
| // Whether the argument is optional. |
| bool |
| takes_optional_argument() const |
| { return this->optional_arg; } |
| |
| // Register this option with the global list of options. |
| void |
| register_option(); |
| |
| // Print this option to stdout (used with --help). |
| void |
| print() const; |
| }; |
| |
| // All options have a Struct_##varname that inherits from this and |
| // actually implements parse_to_value for that option. |
| struct Struct_var |
| { |
| // OPTION: the name of the option as specified on the commandline, |
| // including leading dashes, and any text following the option: |
| // "-O", "--defsym=mysym=0x1000", etc. |
| // ARG: the arg associated with this option, or NULL if the option |
| // takes no argument: "2", "mysym=0x1000", etc. |
| // CMDLINE: the global Command_line object. Used by DEFINE_special. |
| // OPTIONS: the global General_options object. Used by DEFINE_special. |
| virtual void |
| parse_to_value(const char* option, const char* arg, |
| Command_line* cmdline, General_options* options) = 0; |
| virtual |
| ~Struct_var() // To make gcc happy. |
| { } |
| }; |
| |
| // This is for "special" options that aren't of any predefined type. |
| struct Struct_special : public Struct_var |
| { |
| // If you change this, change the parse-fn in DEFINE_special as well. |
| typedef void (General_options::*Parse_function)(const char*, const char*, |
| Command_line*); |
| Struct_special(const char* varname, Dashes dashes, char shortname, |
| Parse_function parse_function, |
| const char* helpstring, const char* helparg) |
| : option(varname, dashes, shortname, "", helpstring, helparg, false, this, |
| false), |
| parse(parse_function) |
| { } |
| |
| void parse_to_value(const char* option, const char* arg, |
| Command_line* cmdline, General_options* options) |
| { (options->*(this->parse))(option, arg, cmdline); } |
| |
| One_option option; |
| Parse_function parse; |
| }; |
| |
| } // End namespace options. |
| |
| |
| // These are helper macros use by DEFINE_uint64/etc below. |
| // This macro is used inside the General_options_ class, so defines |
| // var() and set_var() as General_options methods. Arguments as are |
| // for the constructor for One_option. param_type__ is the same as |
| // type__ for built-in types, and "const type__ &" otherwise. |
| // |
| // When we define the linker command option "assert", the macro argument |
| // varname__ of DEFINE_var below will be replaced by "assert". On Mac OSX |
| // assert.h is included implicitly by one of the library headers we use. To |
| // avoid unintended macro substitution of "assert()", we need to enclose |
| // varname__ with parenthese. |
| #define DEFINE_var(varname__, dashes__, shortname__, default_value__, \ |
| default_value_as_string__, helpstring__, helparg__, \ |
| optional_arg__, type__, param_type__, parse_fn__, \ |
| is_default__) \ |
| public: \ |
| param_type__ \ |
| (varname__)() const \ |
| { return this->varname__##_.value; } \ |
| \ |
| bool \ |
| user_set_##varname__() const \ |
| { return this->varname__##_.user_set_via_option; } \ |
| \ |
| void \ |
| set_user_set_##varname__() \ |
| { this->varname__##_.user_set_via_option = true; } \ |
| \ |
| static const bool varname__##is_default = is_default__; \ |
| \ |
| private: \ |
| struct Struct_##varname__ : public options::Struct_var \ |
| { \ |
| Struct_##varname__() \ |
| : option(#varname__, dashes__, shortname__, default_value_as_string__, \ |
| helpstring__, helparg__, optional_arg__, this, is_default__), \ |
| user_set_via_option(false), value(default_value__) \ |
| { } \ |
| \ |
| void \ |
| parse_to_value(const char* option_name, const char* arg, \ |
| Command_line*, General_options*) \ |
| { \ |
| parse_fn__(option_name, arg, &this->value); \ |
| this->user_set_via_option = true; \ |
| } \ |
| \ |
| options::One_option option; \ |
| bool user_set_via_option; \ |
| type__ value; \ |
| }; \ |
| Struct_##varname__ varname__##_; \ |
| void \ |
| set_##varname__(param_type__ value) \ |
| { this->varname__##_.value = value; } |
| |
| // These macros allow for easy addition of a new commandline option. |
| |
| // If no_helpstring__ is not NULL, then in addition to creating |
| // VARNAME, we also create an option called no-VARNAME (or, for a -z |
| // option, noVARNAME). |
| #define DEFINE_bool(varname__, dashes__, shortname__, default_value__, \ |
| helpstring__, no_helpstring__) \ |
| DEFINE_var(varname__, dashes__, shortname__, default_value__, \ |
| default_value__ ? "true" : "false", helpstring__, NULL, \ |
| false, bool, bool, options::parse_bool, default_value__) \ |
| struct Struct_no_##varname__ : public options::Struct_var \ |
| { \ |
| Struct_no_##varname__() : option((dashes__ == options::DASH_Z \ |
| ? "no" #varname__ \ |
| : "no-" #varname__), \ |
| dashes__, '\0', \ |
| default_value__ ? "false" : "true", \ |
| no_helpstring__, NULL, false, this, \ |
| !(default_value__)) \ |
| { } \ |
| \ |
| void \ |
| parse_to_value(const char*, const char*, \ |
| Command_line*, General_options* options) \ |
| { \ |
| options->set_##varname__(false); \ |
| options->set_user_set_##varname__(); \ |
| } \ |
| \ |
| options::One_option option; \ |
| }; \ |
| Struct_no_##varname__ no_##varname__##_initializer_ |
| |
| #define DEFINE_bool_ignore(varname__, dashes__, shortname__, \ |
| helpstring__, no_helpstring__) \ |
| DEFINE_var(varname__, dashes__, shortname__, false, \ |
| "false", helpstring__, NULL, \ |
| false, bool, bool, options::parse_bool, false) \ |
| struct Struct_no_##varname__ : public options::Struct_var \ |
| { \ |
| Struct_no_##varname__() : option((dashes__ == options::DASH_Z \ |
| ? "no" #varname__ \ |
| : "no-" #varname__), \ |
| dashes__, '\0', \ |
| "false", \ |
| no_helpstring__, NULL, false, this, \ |
| false) \ |
| { } \ |
| \ |
| void \ |
| parse_to_value(const char*, const char*, \ |
| Command_line*, General_options* options) \ |
| { \ |
| options->set_##varname__(false); \ |
| options->set_user_set_##varname__(); \ |
| } \ |
| \ |
| options::One_option option; \ |
| }; \ |
| Struct_no_##varname__ no_##varname__##_initializer_ |
| |
| #define DEFINE_enable(varname__, dashes__, shortname__, default_value__, \ |
| helpstring__, no_helpstring__) \ |
| DEFINE_var(enable_##varname__, dashes__, shortname__, default_value__, \ |
| default_value__ ? "true" : "false", helpstring__, NULL, \ |
| false, bool, bool, options::parse_bool, default_value__) \ |
| struct Struct_disable_##varname__ : public options::Struct_var \ |
| { \ |
| Struct_disable_##varname__() : option("disable-" #varname__, \ |
| dashes__, '\0', \ |
| default_value__ ? "false" : "true", \ |
| no_helpstring__, NULL, false, this, \ |
| !default_value__) \ |
| { } \ |
| \ |
| void \ |
| parse_to_value(const char*, const char*, \ |
| Command_line*, General_options* options) \ |
| { options->set_enable_##varname__(false); } \ |
| \ |
| options::One_option option; \ |
| }; \ |
| Struct_disable_##varname__ disable_##varname__##_initializer_ |
| |
| #define DEFINE_int(varname__, dashes__, shortname__, default_value__, \ |
| helpstring__, helparg__) \ |
| DEFINE_var(varname__, dashes__, shortname__, default_value__, \ |
| #default_value__, helpstring__, helparg__, false, \ |
| int, int, options::parse_int, false) |
| |
| #define DEFINE_uint(varname__, dashes__, shortname__, default_value__, \ |
| helpstring__, helparg__) \ |
| DEFINE_var(varname__, dashes__, shortname__, default_value__, \ |
| #default_value__, helpstring__, helparg__, false, \ |
| int, int, options::parse_uint, false) |
| |
| #define DEFINE_uint64(varname__, dashes__, shortname__, default_value__, \ |
| helpstring__, helparg__) \ |
| DEFINE_var(varname__, dashes__, shortname__, default_value__, \ |
| #default_value__, helpstring__, helparg__, false, \ |
| uint64_t, uint64_t, options::parse_uint64, false) |
| |
| #define DEFINE_double(varname__, dashes__, shortname__, default_value__, \ |
| helpstring__, helparg__) \ |
| DEFINE_var(varname__, dashes__, shortname__, default_value__, \ |
| #default_value__, helpstring__, helparg__, false, \ |
| double, double, options::parse_double, false) |
| |
| #define DEFINE_percent(varname__, dashes__, shortname__, default_value__, \ |
| helpstring__, helparg__) \ |
| DEFINE_var(varname__, dashes__, shortname__, default_value__ / 100.0, \ |
| #default_value__, helpstring__, helparg__, false, \ |
| double, double, options::parse_percent, false) |
| |
| #define DEFINE_string(varname__, dashes__, shortname__, default_value__, \ |
| helpstring__, helparg__) \ |
| DEFINE_var(varname__, dashes__, shortname__, default_value__, \ |
| default_value__, helpstring__, helparg__, false, \ |
| const char*, const char*, options::parse_string, false) |
| |
| // This is like DEFINE_string, but we convert each occurrence to a |
| // Search_directory and store it in a vector. Thus we also have the |
| // add_to_VARNAME() method, to append to the vector. |
| #define DEFINE_dirlist(varname__, dashes__, shortname__, \ |
| helpstring__, helparg__) \ |
| DEFINE_var(varname__, dashes__, shortname__, , \ |
| "", helpstring__, helparg__, false, options::Dir_list, \ |
| const options::Dir_list&, options::parse_dirlist, false) \ |
| void \ |
| add_to_##varname__(const char* new_value) \ |
| { options::parse_dirlist(NULL, new_value, &this->varname__##_.value); } \ |
| void \ |
| add_search_directory_to_##varname__(const Search_directory& dir) \ |
| { this->varname__##_.value.push_back(dir); } |
| |
| // This is like DEFINE_string, but we store a set of strings. |
| #define DEFINE_set(varname__, dashes__, shortname__, \ |
| helpstring__, helparg__) \ |
| DEFINE_var(varname__, dashes__, shortname__, , \ |
| "", helpstring__, helparg__, false, options::String_set, \ |
| const options::String_set&, options::parse_set, false) \ |
| public: \ |
| bool \ |
| any_##varname__() const \ |
| { return !this->varname__##_.value.empty(); } \ |
| \ |
| bool \ |
| is_##varname__(const char* symbol) const \ |
| { \ |
| return (!this->varname__##_.value.empty() \ |
| && (this->varname__##_.value.find(std::string(symbol)) \ |
| != this->varname__##_.value.end())); \ |
| } \ |
| \ |
| options::String_set::const_iterator \ |
| varname__##_begin() const \ |
| { return this->varname__##_.value.begin(); } \ |
| \ |
| options::String_set::const_iterator \ |
| varname__##_end() const \ |
| { return this->varname__##_.value.end(); } \ |
| \ |
| options::String_set::size_type \ |
| varname__##_size() const \ |
| { return this->varname__##_.value.size(); } \ |
| |
| // When you have a list of possible values (expressed as string) |
| // After helparg__ should come an initializer list, like |
| // {"foo", "bar", "baz"} |
| #define DEFINE_enum(varname__, dashes__, shortname__, default_value__, \ |
| helpstring__, helparg__, optional_arg__, ...) \ |
| DEFINE_var(varname__, dashes__, shortname__, default_value__, \ |
| default_value__, helpstring__, helparg__, optional_arg__, \ |
| const char*, const char*, parse_choices_##varname__, false) \ |
| private: \ |
| static void parse_choices_##varname__(const char* option_name, \ |
| const char* arg, \ |
| const char** retval) { \ |
| const char* choices[] = __VA_ARGS__; \ |
| options::parse_choices(option_name, arg, retval, \ |
| choices, sizeof(choices) / sizeof(*choices)); \ |
| } |
| |
| // This is like DEFINE_bool, but VARNAME is the name of a different |
| // option. This option becomes an alias for that one. INVERT is true |
| // if this option is an inversion of the other one. |
| #define DEFINE_bool_alias(option__, varname__, dashes__, shortname__, \ |
| helpstring__, no_helpstring__, invert__) \ |
| private: \ |
| struct Struct_##option__ : public options::Struct_var \ |
| { \ |
| Struct_##option__() \ |
| : option(#option__, dashes__, shortname__, "", helpstring__, \ |
| NULL, false, this, \ |
| General_options::varname__##is_default ^ invert__) \ |
| { } \ |
| \ |
| void \ |
| parse_to_value(const char*, const char*, \ |
| Command_line*, General_options* options) \ |
| { \ |
| options->set_##varname__(!invert__); \ |
| options->set_user_set_##varname__(); \ |
| } \ |
| \ |
| options::One_option option; \ |
| }; \ |
| Struct_##option__ option__##_; \ |
| \ |
| struct Struct_no_##option__ : public options::Struct_var \ |
| { \ |
| Struct_no_##option__() \ |
| : option((dashes__ == options::DASH_Z \ |
| ? "no" #option__ \ |
| : "no-" #option__), \ |
| dashes__, '\0', "", no_helpstring__, \ |
| NULL, false, this, \ |
| !General_options::varname__##is_default ^ invert__) \ |
| { } \ |
| \ |
| void \ |
| parse_to_value(const char*, const char*, \ |
| Command_line*, General_options* options) \ |
| { \ |
| options->set_##varname__(invert__); \ |
| options->set_user_set_##varname__(); \ |
| } \ |
| \ |
| options::One_option option; \ |
| }; \ |
| Struct_no_##option__ no_##option__##_initializer_ |
| |
| // This is like DEFINE_uint64, but VARNAME is the name of a different |
| // option. This option becomes an alias for that one. |
| #define DEFINE_uint64_alias(option__, varname__, dashes__, shortname__, \ |
| helpstring__, helparg__) \ |
| private: \ |
| struct Struct_##option__ : public options::Struct_var \ |
| { \ |
| Struct_##option__() \ |
| : option(#option__, dashes__, shortname__, "", helpstring__, \ |
| helparg__, false, this, false) \ |
| { } \ |
| \ |
| void \ |
| parse_to_value(const char* option_name, const char* arg, \ |
| Command_line*, General_options* options) \ |
| { \ |
| uint64_t value; \ |
| options::parse_uint64(option_name, arg, &value); \ |
| options->set_##varname__(value); \ |
| options->set_user_set_##varname__(); \ |
| } \ |
| \ |
| options::One_option option; \ |
| }; \ |
| Struct_##option__ option__##_; |
| |
| // This is used for non-standard flags. It defines no functions; it |
| // just calls General_options::parse_VARNAME whenever the flag is |
| // seen. We declare parse_VARNAME as a static member of |
| // General_options; you are responsible for defining it there. |
| // helparg__ should be NULL iff this special-option is a boolean. |
| #define DEFINE_special(varname__, dashes__, shortname__, \ |
| helpstring__, helparg__) \ |
| private: \ |
| void parse_##varname__(const char* option, const char* arg, \ |
| Command_line* inputs); \ |
| struct Struct_##varname__ : public options::Struct_special \ |
| { \ |
| Struct_##varname__() \ |
| : options::Struct_special(#varname__, dashes__, shortname__, \ |
| &General_options::parse_##varname__, \ |
| helpstring__, helparg__) \ |
| { } \ |
| }; \ |
| Struct_##varname__ varname__##_initializer_ |
| |
| // An option that takes an optional string argument. If the option is |
| // used with no argument, the value will be the default, and |
| // user_set_via_option will be true. |
| #define DEFINE_optional_string(varname__, dashes__, shortname__, \ |
| default_value__, \ |
| helpstring__, helparg__) \ |
| DEFINE_var(varname__, dashes__, shortname__, default_value__, \ |
| default_value__, helpstring__, helparg__, true, \ |
| const char*, const char*, options::parse_optional_string, \ |
| false) |
| |
| // A directory to search. For each directory we record whether it is |
| // in the sysroot. We need to know this so that, if a linker script |
| // is found within the sysroot, we will apply the sysroot to any files |
| // named by that script. |
| |
| class Search_directory |
| { |
| public: |
| // We need a default constructor because we put this in a |
| // std::vector. |
| Search_directory() |
| : name_(), put_in_sysroot_(false), is_in_sysroot_(false) |
| { } |
| |
| // This is the usual constructor. |
| Search_directory(const std::string& name, bool put_in_sysroot) |
| : name_(name), put_in_sysroot_(put_in_sysroot), is_in_sysroot_(false) |
| { |
| if (this->name_.empty()) |
| this->name_ = "."; |
| } |
| |
| // This is called if we have a sysroot. The sysroot is prefixed to |
| // any entries for which put_in_sysroot_ is true. is_in_sysroot_ is |
| // set to true for any enries which are in the sysroot (this will |
| // naturally include any entries for which put_in_sysroot_ is true). |
| // SYSROOT is the sysroot, CANONICAL_SYSROOT is the result of |
| // passing SYSROOT to lrealpath. |
| void |
| add_sysroot(const char* sysroot, const char* canonical_sysroot); |
| |
| // Get the directory name. |
| const std::string& |
| name() const |
| { return this->name_; } |
| |
| // Return whether this directory is in the sysroot. |
| bool |
| is_in_sysroot() const |
| { return this->is_in_sysroot_; } |
| |
| // Return whether this is considered a system directory. |
| bool |
| is_system_directory() const |
| { return this->put_in_sysroot_ || this->is_in_sysroot_; } |
| |
| private: |
| // The directory name. |
| std::string name_; |
| // True if the sysroot should be added as a prefix for this |
| // directory (if there is a sysroot). This is true for system |
| // directories that we search by default. |
| bool put_in_sysroot_; |
| // True if this directory is in the sysroot (if there is a sysroot). |
| // This is true if there is a sysroot and either 1) put_in_sysroot_ |
| // is true, or 2) the directory happens to be in the sysroot based |
| // on a pathname comparison. |
| bool is_in_sysroot_; |
| }; |
| |
| class General_options |
| { |
| private: |
| // NOTE: For every option that you add here, also consider if you |
| // should add it to Position_dependent_options. |
| DEFINE_special(help, options::TWO_DASHES, '\0', |
| N_("Report usage information"), NULL); |
| DEFINE_special(version, options::TWO_DASHES, 'v', |
| N_("Report version information"), NULL); |
| DEFINE_special(V, options::EXACTLY_ONE_DASH, '\0', |
| N_("Report version and target information"), NULL); |
| |
| // These options are sorted approximately so that for each letter in |
| // the alphabet, we show the option whose shortname is that letter |
| // (if any) and then every longname that starts with that letter (in |
| // alphabetical order). For both, lowercase sorts before uppercase. |
| // The -z options come last. |
| |
| // a |
| |
| DEFINE_bool(add_needed, options::TWO_DASHES, '\0', false, |
| N_("Not supported"), |
| N_("Do not copy DT_NEEDED tags from shared libraries")); |
| |
| DEFINE_bool_alias(allow_multiple_definition, muldefs, options::TWO_DASHES, |
| '\0', |
| N_("Allow multiple definitions of symbols"), |
| N_("Do not allow multiple definitions"), false); |
| |
| DEFINE_bool(allow_shlib_undefined, options::TWO_DASHES, '\0', false, |
| N_("Allow unresolved references in shared libraries"), |
| N_("Do not allow unresolved references in shared libraries")); |
| |
| DEFINE_bool(apply_dynamic_relocs, options::TWO_DASHES, '\0', true, |
| N_("Apply link-time values for dynamic relocations"), |
| N_("(aarch64 only) Do not apply link-time values " |
| "for dynamic relocations")); |
| |
| DEFINE_bool(as_needed, options::TWO_DASHES, '\0', false, |
| N_("Use DT_NEEDED only for shared libraries that are used"), |
| N_("Use DT_NEEDED for all shared libraries")); |
| |
| DEFINE_enum(assert, options::ONE_DASH, '\0', NULL, |
| N_("Ignored"), N_("[ignored]"), false, |
| {"definitions", "nodefinitions", "nosymbolic", "pure-text"}); |
| |
| // b |
| |
| // This should really be an "enum", but it's too easy for folks to |
| // forget to update the list as they add new targets. So we just |
| // accept any string. We'll fail later (when the string is parsed), |
| // if the target isn't actually supported. |
| DEFINE_string(format, options::TWO_DASHES, 'b', "elf", |
| N_("Set input format"), ("[elf,binary]")); |
| |
| DEFINE_bool(be8, options::TWO_DASHES, '\0', false, |
| N_("Output BE8 format image"), NULL); |
| |
| DEFINE_optional_string(build_id, options::TWO_DASHES, '\0', "tree", |
| N_("Generate build ID note"), |
| N_("[=STYLE]")); |
| |
| DEFINE_uint64(build_id_chunk_size_for_treehash, |
| options::TWO_DASHES, '\0', 2 << 20, |
| N_("Chunk size for '--build-id=tree'"), N_("SIZE")); |
| |
| DEFINE_uint64(build_id_min_file_size_for_treehash, options::TWO_DASHES, |
| '\0', 40 << 20, |
| N_("Minimum output file size for '--build-id=tree' to work" |
| " differently than '--build-id=sha1'"), N_("SIZE")); |
| |
| DEFINE_bool(Bdynamic, options::ONE_DASH, '\0', true, |
| N_("-l searches for shared libraries"), NULL); |
| DEFINE_bool_alias(Bstatic, Bdynamic, options::ONE_DASH, '\0', |
| N_("-l does not search for shared libraries"), NULL, |
| true); |
| DEFINE_bool_alias(dy, Bdynamic, options::ONE_DASH, '\0', |
| N_("alias for -Bdynamic"), NULL, false); |
| DEFINE_bool_alias(dn, Bdynamic, options::ONE_DASH, '\0', |
| N_("alias for -Bstatic"), NULL, true); |
| |
| DEFINE_bool(Bgroup, options::ONE_DASH, '\0', false, |
| N_("Use group name lookup rules for shared library"), NULL); |
| |
| DEFINE_bool(Bshareable, options::ONE_DASH, '\0', false, |
| N_("Generate shared library (alias for -G/-shared)"), NULL); |
| |
| DEFINE_special (Bno_symbolic, options::ONE_DASH, '\0', |
| N_ ("Don't bind default visibility defined symbols locally " |
| "for -shared (default)"), |
| NULL); |
| |
| DEFINE_special (Bsymbolic_functions, options::ONE_DASH, '\0', |
| N_ ("Bind default visibility defined function symbols " |
| "locally for -shared"), |
| NULL); |
| |
| DEFINE_special ( |
| Bsymbolic, options::ONE_DASH, '\0', |
| N_ ("Bind default visibility defined symbols locally for -shared"), |
| NULL); |
| |
| // c |
| |
| DEFINE_bool(check_sections, options::TWO_DASHES, '\0', true, |
| N_("Check segment addresses for overlaps"), |
| N_("Do not check segment addresses for overlaps")); |
| |
| DEFINE_enum(compress_debug_sections, options::TWO_DASHES, '\0', "none", |
| N_("Compress .debug_* sections in the output file"), |
| ("[none,zlib,zlib-gnu,zlib-gabi,zstd]"), false, |
| {"none", "zlib", "zlib-gnu", "zlib-gabi", "zstd"}); |
| |
| DEFINE_bool(copy_dt_needed_entries, options::TWO_DASHES, '\0', false, |
| N_("Not supported"), |
| N_("Do not copy DT_NEEDED tags from shared libraries")); |
| |
| DEFINE_bool(cref, options::TWO_DASHES, '\0', false, |
| N_("Output cross reference table"), |
| N_("Do not output cross reference table")); |
| |
| DEFINE_bool(ctors_in_init_array, options::TWO_DASHES, '\0', true, |
| N_("Use DT_INIT_ARRAY for all constructors"), |
| N_("Handle constructors as directed by compiler")); |
| |
| // d |
| |
| DEFINE_bool(define_common, options::TWO_DASHES, 'd', false, |
| N_("Define common symbols"), |
| N_("Do not define common symbols in relocatable output")); |
| DEFINE_bool(dc, options::ONE_DASH, '\0', false, |
| N_("Alias for -d"), NULL); |
| DEFINE_bool(dp, options::ONE_DASH, '\0', false, |
| N_("Alias for -d"), NULL); |
| |
| DEFINE_string(debug, options::TWO_DASHES, '\0', "", |
| N_("Turn on debugging"), |
| N_("[all,files,script,task][,...]")); |
| |
| DEFINE_special(defsym, options::TWO_DASHES, '\0', |
| N_("Define a symbol"), N_("SYMBOL=EXPRESSION")); |
| |
| DEFINE_optional_string(demangle, options::TWO_DASHES, '\0', NULL, |
| N_("Demangle C++ symbols in log messages"), |
| N_("[=STYLE]")); |
| DEFINE_bool(no_demangle, options::TWO_DASHES, '\0', false, |
| N_("Do not demangle C++ symbols in log messages"), |
| NULL); |
| |
| DEFINE_string(dependency_file, options::TWO_DASHES, '\0', NULL, |
| N_("Write a dependency file listing all files read"), |
| N_("FILE")); |
| |
| DEFINE_bool(detect_odr_violations, options::TWO_DASHES, '\0', false, |
| N_("Look for violations of the C++ One Definition Rule"), |
| N_("Do not look for violations of the C++ One Definition Rule")); |
| |
| DEFINE_bool(dynamic_list_data, options::TWO_DASHES, '\0', false, |
| N_("Add data symbols to dynamic symbols"), NULL); |
| |
| DEFINE_bool(dynamic_list_cpp_new, options::TWO_DASHES, '\0', false, |
| N_("Add C++ operator new/delete to dynamic symbols"), NULL); |
| |
| DEFINE_bool(dynamic_list_cpp_typeinfo, options::TWO_DASHES, '\0', false, |
| N_("Add C++ typeinfo to dynamic symbols"), NULL); |
| |
| DEFINE_special(dynamic_list, options::TWO_DASHES, '\0', |
| N_("Read a list of dynamic symbols"), N_("FILE")); |
| |
| // e |
| |
| DEFINE_bool(emit_stub_syms, options::TWO_DASHES, '\0', true, |
| N_("(PowerPC only) Label linker stubs with a symbol"), |
| N_("(PowerPC only) Do not label linker stubs with a symbol")); |
| |
| DEFINE_string(entry, options::TWO_DASHES, 'e', NULL, |
| N_("Set program start address"), N_("ADDRESS")); |
| |
| DEFINE_bool(eh_frame_hdr, options::TWO_DASHES, '\0', false, |
| N_("Create exception frame header"), |
| N_("Do not create exception frame header")); |
| |
| // Alphabetized under 'e' because the option is spelled --enable-new-dtags. |
| DEFINE_enable(new_dtags, options::EXACTLY_TWO_DASHES, '\0', true, |
| N_("Enable use of DT_RUNPATH"), |
| N_("Disable use of DT_RUNPATH")); |
| |
| DEFINE_enable(linker_version, options::EXACTLY_TWO_DASHES, '\0', false, |
| N_("Put the linker version string into the .comment section"), |
| N_("Put the linker version string into the .note.gnu.gold-version section")); |
| |
| DEFINE_bool(enum_size_warning, options::TWO_DASHES, '\0', true, NULL, |
| N_("(ARM only) Do not warn about objects with incompatible " |
| "enum sizes")); |
| |
| DEFINE_special(exclude_libs, options::TWO_DASHES, '\0', |
| N_("Exclude libraries from automatic export"), |
| N_(("lib,lib ..."))); |
| |
| DEFINE_bool(export_dynamic, options::TWO_DASHES, 'E', false, |
| N_("Export all dynamic symbols"), |
| N_("Do not export all dynamic symbols")); |
| |
| DEFINE_set(export_dynamic_symbol, options::TWO_DASHES, '\0', |
| N_("Export SYMBOL to dynamic symbol table"), N_("SYMBOL")); |
| |
| DEFINE_special(EB, options::ONE_DASH, '\0', |
| N_("Link big-endian objects."), NULL); |
| DEFINE_special(EL, options::ONE_DASH, '\0', |
| N_("Link little-endian objects."), NULL); |
| |
| // f |
| |
| DEFINE_set(auxiliary, options::TWO_DASHES, 'f', |
| N_("Auxiliary filter for shared object symbol table"), |
| N_("SHLIB")); |
| |
| DEFINE_string(filter, options::TWO_DASHES, 'F', NULL, |
| N_("Filter for shared object symbol table"), |
| N_("SHLIB")); |
| |
| DEFINE_bool(fatal_warnings, options::TWO_DASHES, '\0', false, |
| N_("Treat warnings as errors"), |
| N_("Do not treat warnings as errors")); |
| |
| DEFINE_string(fini, options::ONE_DASH, '\0', "_fini", |
| N_("Call SYMBOL at unload-time"), N_("SYMBOL")); |
| |
| DEFINE_bool(fix_arm1176, options::TWO_DASHES, '\0', true, |
| N_("(ARM only) Fix binaries for ARM1176 erratum"), |
| N_("(ARM only) Do not fix binaries for ARM1176 erratum")); |
| |
| DEFINE_bool(fix_cortex_a8, options::TWO_DASHES, '\0', false, |
| N_("(ARM only) Fix binaries for Cortex-A8 erratum"), |
| N_("(ARM only) Do not fix binaries for Cortex-A8 erratum")); |
| |
| DEFINE_bool(fix_cortex_a53_843419, options::TWO_DASHES, '\0', false, |
| N_("(AArch64 only) Fix Cortex-A53 erratum 843419"), |
| N_("(AArch64 only) Do not fix Cortex-A53 erratum 843419")); |
| |
| DEFINE_bool(fix_cortex_a53_835769, options::TWO_DASHES, '\0', false, |
| N_("(AArch64 only) Fix Cortex-A53 erratum 835769"), |
| N_("(AArch64 only) Do not fix Cortex-A53 erratum 835769")); |
| |
| DEFINE_special(fix_v4bx, options::TWO_DASHES, '\0', |
| N_("(ARM only) Rewrite BX rn as MOV pc, rn for ARMv4"), |
| NULL); |
| |
| DEFINE_special(fix_v4bx_interworking, options::TWO_DASHES, '\0', |
| N_("(ARM only) Rewrite BX rn branch to ARMv4 interworking " |
| "veneer"), |
| NULL); |
| |
| DEFINE_string(fuse_ld, options::ONE_DASH, '\0', "", |
| N_("Ignored for GCC linker option compatibility"), |
| N_("[gold,bfd]")); |
| |
| // g |
| |
| DEFINE_bool(g, options::EXACTLY_ONE_DASH, '\0', false, |
| N_("Ignored"), NULL); |
| |
| DEFINE_bool(gc_sections, options::TWO_DASHES, '\0', false, |
| N_("Remove unused sections"), |
| N_("Don't remove unused sections")); |
| |
| DEFINE_bool(gdb_index, options::TWO_DASHES, '\0', false, |
| N_("Generate .gdb_index section"), |
| N_("Do not generate .gdb_index section")); |
| |
| DEFINE_bool(gnu_unique, options::TWO_DASHES, '\0', true, |
| N_("Enable STB_GNU_UNIQUE symbol binding"), |
| N_("Disable STB_GNU_UNIQUE symbol binding")); |
| |
| DEFINE_bool(shared, options::ONE_DASH, 'G', false, |
| N_("Generate shared library"), NULL); |
| |
| // h |
| |
| DEFINE_string(soname, options::ONE_DASH, 'h', NULL, |
| N_("Set shared library name"), N_("FILENAME")); |
| |
| DEFINE_double(hash_bucket_empty_fraction, options::TWO_DASHES, '\0', 0.0, |
| N_("Min fraction of empty buckets in dynamic hash"), |
| N_("FRACTION")); |
| |
| DEFINE_enum(hash_style, options::TWO_DASHES, '\0', DEFAULT_HASH_STYLE, |
| N_("Dynamic hash style"), N_("[sysv,gnu,both]"), false, |
| {"sysv", "gnu", "both"}); |
| |
| // i |
| |
| DEFINE_bool_alias(i, relocatable, options::EXACTLY_ONE_DASH, '\0', |
| N_("Alias for -r"), NULL, false); |
| |
| DEFINE_enum(icf, options::TWO_DASHES, '\0', "none", |
| N_("Identical Code Folding. " |
| "\'--icf=safe\' Folds ctors, dtors and functions whose" |
| " pointers are definitely not taken"), |
| ("[none,all,safe]"), false, |
| {"none", "all", "safe"}); |
| |
| DEFINE_uint(icf_iterations, options::TWO_DASHES , '\0', 0, |
| N_("Number of iterations of ICF (default 3)"), N_("COUNT")); |
| |
| DEFINE_special(incremental, options::TWO_DASHES, '\0', |
| N_("Do an incremental link if possible; " |
| "otherwise, do a full link and prepare output " |
| "for incremental linking"), NULL); |
| |
| DEFINE_special(no_incremental, options::TWO_DASHES, '\0', |
| N_("Do a full link (default)"), NULL); |
| |
| DEFINE_special(incremental_full, options::TWO_DASHES, '\0', |
| N_("Do a full link and " |
| "prepare output for incremental linking"), NULL); |
| |
| DEFINE_special(incremental_update, options::TWO_DASHES, '\0', |
| N_("Do an incremental link; exit if not possible"), NULL); |
| |
| DEFINE_string(incremental_base, options::TWO_DASHES, '\0', NULL, |
| N_("Set base file for incremental linking" |
| " (default is output file)"), |
| N_("FILE")); |
| |
| DEFINE_special(incremental_changed, options::TWO_DASHES, '\0', |
| N_("Assume files changed"), NULL); |
| |
| DEFINE_special(incremental_unchanged, options::TWO_DASHES, '\0', |
| N_("Assume files didn't change"), NULL); |
| |
| DEFINE_special(incremental_unknown, options::TWO_DASHES, '\0', |
| N_("Use timestamps to check files (default)"), NULL); |
| |
| DEFINE_special(incremental_startup_unchanged, options::TWO_DASHES, '\0', |
| N_("Assume startup files unchanged " |
| "(files preceding this option)"), NULL); |
| |
| DEFINE_percent(incremental_patch, options::TWO_DASHES, '\0', 10, |
| N_("Amount of extra space to allocate for patches " |
| "(default 10)"), |
| N_("PERCENT")); |
| |
| DEFINE_string(init, options::ONE_DASH, '\0', "_init", |
| N_("Call SYMBOL at load-time"), N_("SYMBOL")); |
| |
| DEFINE_string(dynamic_linker, options::TWO_DASHES, 'I', NULL, |
| N_("Set dynamic linker path"), N_("PROGRAM")); |
| |
| // j |
| |
| DEFINE_special(just_symbols, options::TWO_DASHES, '\0', |
| N_("Read only symbol values from FILE"), N_("FILE")); |
| |
| // k |
| |
| DEFINE_bool(keep_files_mapped, options::TWO_DASHES, '\0', true, |
| N_("Keep files mapped across passes"), |
| N_("Release mapped files after each pass")); |
| |
| DEFINE_set(keep_unique, options::TWO_DASHES, '\0', |
| N_("Do not fold this symbol during ICF"), N_("SYMBOL")); |
| |
| // l |
| |
| DEFINE_special(library, options::TWO_DASHES, 'l', |
| N_("Search for library LIBNAME"), N_("LIBNAME")); |
| |
| DEFINE_bool(ld_generated_unwind_info, options::TWO_DASHES, '\0', true, |
| N_("Generate unwind information for PLT"), |
| N_("Do not generate unwind information for PLT")); |
| |
| DEFINE_dirlist(library_path, options::TWO_DASHES, 'L', |
| N_("Add directory to search path"), N_("DIR")); |
| |
| DEFINE_bool(long_plt, options::TWO_DASHES, '\0', false, |
| N_("(ARM only) Generate long PLT entries"), |
| N_("(ARM only) Do not generate long PLT entries")); |
| |
| // m |
| |
| DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "", |
| N_("Set GNU linker emulation; obsolete"), N_("EMULATION")); |
| |
| DEFINE_bool(map_whole_files, options::TWO_DASHES, '\0', |
| sizeof(void*) >= 8, |
| N_("Map whole files to memory"), |
| N_("Map relevant file parts to memory")); |
| |
| DEFINE_bool(merge_exidx_entries, options::TWO_DASHES, '\0', true, |
| N_("(ARM only) Merge exidx entries in debuginfo"), |
| N_("(ARM only) Do not merge exidx entries in debuginfo")); |
| |
| DEFINE_bool(mmap_output_file, options::TWO_DASHES, '\0', true, |
| N_("Map the output file for writing"), |
| N_("Do not map the output file for writing")); |
| |
| DEFINE_bool(print_map, options::TWO_DASHES, 'M', false, |
| N_("Write map file on standard output"), NULL); |
| |
| DEFINE_string(Map, options::ONE_DASH, '\0', NULL, N_("Write map file"), |
| N_("MAPFILENAME")); |
| |
| // n |
| |
| DEFINE_bool(nmagic, options::TWO_DASHES, 'n', false, |
| N_("Do not page align data"), NULL); |
| DEFINE_bool(omagic, options::EXACTLY_TWO_DASHES, 'N', false, |
| N_("Do not page align data, do not make text readonly"), |
| N_("Page align data, make text readonly")); |
| |
| DEFINE_bool(no_keep_memory, options::TWO_DASHES, '\0', false, |
| N_("Use less memory and more disk I/O " |
| "(included only for compatibility with GNU ld)"), NULL); |
| |
| DEFINE_bool_alias(no_undefined, defs, options::TWO_DASHES, '\0', |
| N_("Report undefined symbols (even with --shared)"), |
| NULL, false); |
| |
| DEFINE_bool(noinhibit_exec, options::TWO_DASHES, '\0', false, |
| N_("Create an output file even if errors occur"), NULL); |
| |
| DEFINE_bool(nostdlib, options::ONE_DASH, '\0', false, |
| N_("Only search directories specified on the command line"), |
| NULL); |
| |
| // o |
| |
| DEFINE_string(output, options::TWO_DASHES, 'o', "a.out", |
| N_("Set output file name"), N_("FILE")); |
| |
| DEFINE_string(oformat, options::EXACTLY_TWO_DASHES, '\0', "elf", |
| N_("Set output format"), N_("[binary]")); |
| |
| DEFINE_uint(optimize, options::EXACTLY_ONE_DASH, 'O', 0, |
| N_("Optimize output file size"), N_("LEVEL")); |
| |
| DEFINE_enum(orphan_handling, options::TWO_DASHES, '\0', "place", |
| N_("Orphan section handling"), N_("[place,discard,warn,error]"), |
| false, {"place", "discard", "warn", "error"}); |
| |
| // p |
| |
| DEFINE_bool(p, options::ONE_DASH, 'p', false, |
| N_("Ignored for ARM compatibility"), NULL); |
| |
| DEFINE_optional_string(package_metadata, options::TWO_DASHES, '\0', NULL, |
| N_("Generate package metadata note"), |
| N_("[=JSON]")); |
| |
| DEFINE_bool(pie, options::ONE_DASH, '\0', false, |
| N_("Create a position independent executable"), |
| N_("Do not create a position independent executable")); |
| DEFINE_bool_alias(pic_executable, pie, options::TWO_DASHES, '\0', |
| N_("Create a position independent executable"), |
| N_("Do not create a position independent executable"), |
| false); |
| |
| DEFINE_bool(pic_veneer, options::TWO_DASHES, '\0', false, |
| N_("Force PIC sequences for ARM/Thumb interworking veneers"), |
| NULL); |
| |
| DEFINE_bool(pipeline_knowledge, options::ONE_DASH, '\0', false, |
| NULL, N_("(ARM only) Ignore for backward compatibility")); |
| |
| DEFINE_var(plt_align, options::TWO_DASHES, '\0', 0, "5", |
| N_("(PowerPC only) Align PLT call stubs to fit cache lines"), |
| N_("[=P2ALIGN]"), true, int, int, options::parse_uint, false); |
| |
| DEFINE_bool(plt_localentry, options::TWO_DASHES, '\0', false, |
| N_("(PowerPC64 only) Optimize calls to ELFv2 localentry:0 functions"), |
| N_("(PowerPC64 only) Don't optimize ELFv2 calls")); |
| |
| DEFINE_bool(plt_static_chain, options::TWO_DASHES, '\0', false, |
| N_("(PowerPC64 only) PLT call stubs should load r11"), |
| N_("(PowerPC64 only) PLT call stubs should not load r11")); |
| |
| DEFINE_bool(plt_thread_safe, options::TWO_DASHES, '\0', false, |
| N_("(PowerPC64 only) PLT call stubs with load-load barrier"), |
| N_("(PowerPC64 only) PLT call stubs without barrier")); |
| |
| #ifdef ENABLE_PLUGINS |
| DEFINE_special(plugin, options::TWO_DASHES, '\0', |
| N_("Load a plugin library"), N_("PLUGIN")); |
| DEFINE_special(plugin_opt, options::TWO_DASHES, '\0', |
| N_("Pass an option to the plugin"), N_("OPTION")); |
| #else |
| DEFINE_special(plugin, options::TWO_DASHES, '\0', |
| N_("Load a plugin library (not supported)"), N_("PLUGIN")); |
| DEFINE_special(plugin_opt, options::TWO_DASHES, '\0', |
| N_("Pass an option to the plugin (not supported)"), |
| N_("OPTION")); |
| #endif |
| |
| DEFINE_bool(posix_fallocate, options::TWO_DASHES, '\0', true, |
| N_("Use posix_fallocate to reserve space in the output file"), |
| N_("Use fallocate or ftruncate to reserve space")); |
| |
| DEFINE_enum(power10_stubs, options::TWO_DASHES, '\0', "yes", |
| N_("(PowerPC64 only) stubs use power10 insns"), |
| N_("[=auto,no,yes]"), true, {"auto", "no", "yes"}); |
| DEFINE_special(no_power10_stubs, options::TWO_DASHES, '\0', |
| N_("(PowerPC64 only) stubs do not use power10 insns"), NULL); |
| |
| DEFINE_bool(preread_archive_symbols, options::TWO_DASHES, '\0', false, |
| N_("Preread archive symbols when multi-threaded"), NULL); |
| |
| DEFINE_bool(print_gc_sections, options::TWO_DASHES, '\0', false, |
| N_("List removed unused sections on stderr"), |
| N_("Do not list removed unused sections")); |
| |
| DEFINE_bool(print_icf_sections, options::TWO_DASHES, '\0', false, |
| N_("List folded identical sections on stderr"), |
| N_("Do not list folded identical sections")); |
| |
| DEFINE_bool(print_output_format, options::TWO_DASHES, '\0', false, |
| N_("Print default output format"), NULL); |
| |
| DEFINE_string(print_symbol_counts, options::TWO_DASHES, '\0', NULL, |
| N_("Print symbols defined and used for each input"), |
| N_("FILENAME")); |
| |
| DEFINE_special(push_state, options::TWO_DASHES, '\0', |
| N_("Save the state of flags related to input files"), NULL); |
| DEFINE_special(pop_state, options::TWO_DASHES, '\0', |
| N_("Restore the state of flags related to input files"), NULL); |
| |
| // q |
| |
| DEFINE_bool(emit_relocs, options::TWO_DASHES, 'q', false, |
| N_("Generate relocations in output"), NULL); |
| |
| DEFINE_bool(Qy, options::EXACTLY_ONE_DASH, '\0', false, |
| N_("Ignored for SVR4 compatibility"), NULL); |
| |
| // r |
| |
| DEFINE_bool(relocatable, options::EXACTLY_ONE_DASH, 'r', false, |
| N_("Generate relocatable output"), NULL); |
| |
| DEFINE_bool(relax, options::TWO_DASHES, '\0', false, |
| N_("Relax branches on certain targets"), |
| N_("Do not relax branches")); |
| |
| DEFINE_string(retain_symbols_file, options::TWO_DASHES, '\0', NULL, |
| N_("keep only symbols listed in this file"), N_("FILE")); |
| |
| DEFINE_bool(rosegment, options::TWO_DASHES, '\0', false, |
| N_("Put read-only non-executable sections in their own segment"), |
| N_("Do not put read-only non-executable sections in their own segment")); |
| |
| DEFINE_uint64(rosegment_gap, options::TWO_DASHES, '\0', -1U, |
| N_("Set offset between executable and read-only segments"), |
| N_("OFFSET")); |
| |
| // -R really means -rpath, but can mean --just-symbols for |
| // compatibility with GNU ld. -rpath is always -rpath, so we list |
| // it separately. |
| DEFINE_special(R, options::EXACTLY_ONE_DASH, 'R', |
| N_("Add DIR to runtime search path"), N_("DIR")); |
| |
| DEFINE_dirlist(rpath, options::ONE_DASH, '\0', |
| N_("Add DIR to runtime search path"), N_("DIR")); |
| |
| DEFINE_dirlist(rpath_link, options::TWO_DASHES, '\0', |
| N_("Add DIR to link time shared library search path"), |
| N_("DIR")); |
| |
| // s |
| |
| DEFINE_bool(strip_all, options::TWO_DASHES, 's', false, |
| N_("Strip all symbols"), NULL); |
| DEFINE_bool(strip_debug, options::TWO_DASHES, 'S', false, |
| N_("Strip debugging information"), NULL); |
| DEFINE_bool(strip_debug_non_line, options::TWO_DASHES, '\0', false, |
| N_("Emit only debug line number information"), NULL); |
| DEFINE_bool(strip_debug_gdb, options::TWO_DASHES, '\0', false, |
| N_("Strip debug symbols that are unused by gdb " |
| "(at least versions <= 7.4)"), NULL); |
| DEFINE_bool(strip_lto_sections, options::TWO_DASHES, '\0', true, |
| N_("Strip LTO intermediate code sections"), NULL); |
| |
| DEFINE_string(section_ordering_file, options::TWO_DASHES, '\0', NULL, |
| N_("Layout sections in the order specified"), |
| N_("FILENAME")); |
| |
| DEFINE_special(section_start, options::TWO_DASHES, '\0', |
| N_("Set address of section"), N_("SECTION=ADDRESS")); |
| |
| DEFINE_bool(secure_plt, options::TWO_DASHES , '\0', true, |
| N_("(PowerPC only) Use new-style PLT"), NULL); |
| |
| DEFINE_optional_string(sort_common, options::TWO_DASHES, '\0', NULL, |
| N_("Sort common symbols by alignment"), |
| N_("[={ascending,descending}]")); |
| |
| DEFINE_enum(sort_section, options::TWO_DASHES, '\0', "none", |
| N_("Sort sections by name. \'--no-text-reorder\'" |
| " will override \'--sort-section=name\' for .text"), |
| N_("[none,name]"), false, |
| {"none", "name"}); |
| |
| DEFINE_uint(spare_dynamic_tags, options::TWO_DASHES, '\0', 5, |
| N_("Dynamic tag slots to reserve (default 5)"), |
| N_("COUNT")); |
| |
| DEFINE_int(stub_group_size, options::TWO_DASHES , '\0', 1, |
| N_("(ARM, PowerPC only) The maximum distance from instructions " |
| "in a group of sections to their stubs. Negative values mean " |
| "stubs are always after the group. 1 means use default size"), |
| N_("SIZE")); |
| |
| DEFINE_bool(stub_group_multi, options::TWO_DASHES, '\0', true, |
| N_("(PowerPC only) Allow a group of stubs to serve multiple " |
| "output sections"), |
| N_("(PowerPC only) Each output section has its own stubs")); |
| |
| DEFINE_uint(split_stack_adjust_size, options::TWO_DASHES, '\0', 0x100000, |
| N_("Stack size when -fsplit-stack function calls non-split"), |
| N_("SIZE")); |
| |
| // This is not actually special in any way, but I need to give it |
| // a non-standard accessor-function name because 'static' is a keyword. |
| DEFINE_special(static, options::ONE_DASH, '\0', |
| N_("Do not link against shared libraries"), NULL); |
| |
| DEFINE_special(start_lib, options::TWO_DASHES, '\0', |
| N_("Start a library"), NULL); |
| DEFINE_special(end_lib, options::TWO_DASHES, '\0', |
| N_("End a library "), NULL); |
| |
| DEFINE_bool(stats, options::TWO_DASHES, '\0', false, |
| N_("Print resource usage statistics"), NULL); |
| |
| DEFINE_string(sysroot, options::TWO_DASHES, '\0', "", |
| N_("Set target system root directory"), N_("DIR")); |
| |
| // t |
| |
| DEFINE_bool(trace, options::TWO_DASHES, 't', false, |
| N_("Print the name of each input file"), NULL); |
| |
| DEFINE_bool(target1_abs, options::TWO_DASHES, '\0', false, |
| N_("(ARM only) Force R_ARM_TARGET1 type to R_ARM_ABS32"), |
| NULL); |
| DEFINE_bool(target1_rel, options::TWO_DASHES, '\0', false, |
| N_("(ARM only) Force R_ARM_TARGET1 type to R_ARM_REL32"), |
| NULL); |
| DEFINE_enum(target2, options::TWO_DASHES, '\0', NULL, |
| N_("(ARM only) Set R_ARM_TARGET2 relocation type"), |
| N_("[rel, abs, got-rel"), false, |
| {"rel", "abs", "got-rel"}); |
| |
| DEFINE_bool(text_reorder, options::TWO_DASHES, '\0', true, |
| N_("Enable text section reordering for GCC section names"), |
| N_("Disable text section reordering for GCC section names")); |
| |
| DEFINE_bool(threads, options::TWO_DASHES, '\0', false, |
| N_("Run the linker multi-threaded"), |
| N_("Do not run the linker multi-threaded")); |
| DEFINE_uint(thread_count, options::TWO_DASHES, '\0', 0, |
| N_("Number of threads to use"), N_("COUNT")); |
| DEFINE_uint(thread_count_initial, options::TWO_DASHES, '\0', 0, |
| N_("Number of threads to use in initial pass"), N_("COUNT")); |
| DEFINE_uint(thread_count_middle, options::TWO_DASHES, '\0', 0, |
| N_("Number of threads to use in middle pass"), N_("COUNT")); |
| DEFINE_uint(thread_count_final, options::TWO_DASHES, '\0', 0, |
| N_("Number of threads to use in final pass"), N_("COUNT")); |
| |
| DEFINE_bool(tls_optimize, options::TWO_DASHES, '\0', true, |
| N_("(PowerPC/64 only) Optimize GD/LD/IE code to IE/LE"), |
| N_("(PowerPC/64 only) Don'\''t try to optimize TLS accesses")); |
| DEFINE_bool(tls_get_addr_optimize, options::TWO_DASHES, '\0', true, |
| N_("(PowerPC/64 only) Use a special __tls_get_addr call"), |
| N_("(PowerPC/64 only) Don't use a special __tls_get_addr call")); |
| |
| DEFINE_bool(toc_optimize, options::TWO_DASHES, '\0', true, |
| N_("(PowerPC64 only) Optimize TOC code sequences"), |
| N_("(PowerPC64 only) Don't optimize TOC code sequences")); |
| |
| DEFINE_bool(toc_sort, options::TWO_DASHES, '\0', true, |
| N_("(PowerPC64 only) Sort TOC and GOT sections"), |
| N_("(PowerPC64 only) Don't sort TOC and GOT sections")); |
| |
| DEFINE_special(script, options::TWO_DASHES, 'T', |
| N_("Read linker script"), N_("FILE")); |
| |
| DEFINE_uint64(Tbss, options::ONE_DASH, '\0', -1U, |
| N_("Set the address of the bss segment"), N_("ADDRESS")); |
| DEFINE_uint64(Tdata, options::ONE_DASH, '\0', -1U, |
| N_("Set the address of the data segment"), N_("ADDRESS")); |
| DEFINE_uint64(Ttext, options::ONE_DASH, '\0', -1U, |
| N_("Set the address of the text segment"), N_("ADDRESS")); |
| DEFINE_uint64_alias(Ttext_segment, Ttext, options::ONE_DASH, '\0', |
| N_("Set the address of the text segment"), |
| N_("ADDRESS")); |
| DEFINE_uint64(Trodata_segment, options::ONE_DASH, '\0', -1U, |
| N_("Set the address of the rodata segment"), N_("ADDRESS")); |
| |
| // u |
| |
| DEFINE_set(undefined, options::TWO_DASHES, 'u', |
| N_("Create undefined reference to SYMBOL"), N_("SYMBOL")); |
| |
| DEFINE_enum(unresolved_symbols, options::TWO_DASHES, '\0', NULL, |
| N_("How to handle unresolved symbols"), |
| ("ignore-all,report-all,ignore-in-object-files," |
| "ignore-in-shared-libs"), false, |
| {"ignore-all", "report-all", "ignore-in-object-files", |
| "ignore-in-shared-libs"}); |
| |
| // v |
| |
| DEFINE_bool(verbose, options::TWO_DASHES, '\0', false, |
| N_("Alias for --debug=files"), NULL); |
| |
| DEFINE_special(version_script, options::TWO_DASHES, '\0', |
| N_("Read version script"), N_("FILE")); |
| |
| // w |
| |
| DEFINE_bool(warn_common, options::TWO_DASHES, '\0', false, |
| N_("Warn about duplicate common symbols"), |
| N_("Do not warn about duplicate common symbols")); |
| |
| DEFINE_bool_ignore(warn_constructors, options::TWO_DASHES, '\0', |
| N_("Ignored"), N_("Ignored")); |
| |
| DEFINE_bool(warn_drop_version, options::TWO_DASHES, '\0', false, |
| N_("Warn when discarding version information"), |
| N_("Do not warn when discarding version information")); |
| |
| DEFINE_bool(warn_execstack, options::TWO_DASHES, '\0', false, |
| N_("Warn if the stack is executable"), |
| N_("Do not warn if the stack is executable")); |
| |
| DEFINE_bool(warn_mismatch, options::TWO_DASHES, '\0', true, |
| NULL, N_("Don't warn about mismatched input files")); |
| |
| DEFINE_bool(warn_multiple_gp, options::TWO_DASHES, '\0', false, |
| N_("Ignored"), NULL); |
| |
| DEFINE_bool(warn_search_mismatch, options::TWO_DASHES, '\0', true, |
| N_("Warn when skipping an incompatible library"), |
| N_("Don't warn when skipping an incompatible library")); |
| |
| DEFINE_bool(warn_shared_textrel, options::TWO_DASHES, '\0', false, |
| N_("Warn if text segment is not shareable"), |
| N_("Do not warn if text segment is not shareable")); |
| |
| DEFINE_bool(warn_unresolved_symbols, options::TWO_DASHES, '\0', false, |
| N_("Report unresolved symbols as warnings"), |
| NULL); |
| DEFINE_bool_alias(error_unresolved_symbols, warn_unresolved_symbols, |
| options::TWO_DASHES, '\0', |
| N_("Report unresolved symbols as errors"), |
| NULL, true); |
| |
| DEFINE_bool(wchar_size_warning, options::TWO_DASHES, '\0', true, NULL, |
| N_("(ARM only) Do not warn about objects with incompatible " |
| "wchar_t sizes")); |
| |
| DEFINE_bool(weak_unresolved_symbols, options::TWO_DASHES, '\0', false, |
| N_("Convert unresolved symbols to weak references"), |
| NULL); |
| |
| DEFINE_bool(whole_archive, options::TWO_DASHES, '\0', false, |
| N_("Include all archive contents"), |
| N_("Include only needed archive contents")); |
| |
| DEFINE_set(wrap, options::TWO_DASHES, '\0', |
| N_("Use wrapper functions for SYMBOL"), N_("SYMBOL")); |
| |
| // x |
| |
| DEFINE_special(discard_all, options::TWO_DASHES, 'x', |
| N_("Delete all local symbols"), NULL); |
| DEFINE_special(discard_locals, options::TWO_DASHES, 'X', |
| N_("Delete all temporary local symbols"), NULL); |
| DEFINE_special(discard_none, options::TWO_DASHES, '\0', |
| N_("Keep all local symbols"), NULL); |
| |
| // y |
| |
| DEFINE_set(trace_symbol, options::TWO_DASHES, 'y', |
| N_("Trace references to symbol"), N_("SYMBOL")); |
| |
| DEFINE_bool(undefined_version, options::TWO_DASHES, '\0', true, |
| N_("Allow unused version in script"), |
| N_("Do not allow unused version in script")); |
| |
| DEFINE_string(Y, options::EXACTLY_ONE_DASH, 'Y', "", |
| N_("Default search path for Solaris compatibility"), |
| N_("PATH")); |
| |
| // special characters |
| |
| DEFINE_special(start_group, options::TWO_DASHES, '(', |
| N_("Start a library search group"), NULL); |
| DEFINE_special(end_group, options::TWO_DASHES, ')', |
| N_("End a library search group"), NULL); |
| |
| // The -z options. |
| |
| DEFINE_bool(combreloc, options::DASH_Z, '\0', true, |
| N_("Sort dynamic relocs"), |
| N_("Do not sort dynamic relocs")); |
| DEFINE_uint64(common_page_size, options::DASH_Z, '\0', 0, |
| N_("Set common page size to SIZE"), N_("SIZE")); |
| DEFINE_bool(defs, options::DASH_Z, '\0', false, |
| N_("Report undefined symbols (even with --shared)"), |
| NULL); |
| DEFINE_bool(execstack, options::DASH_Z, '\0', false, |
| N_("Mark output as requiring executable stack"), NULL); |
| DEFINE_bool(global, options::DASH_Z, '\0', false, |
| N_("Make symbols in DSO available for subsequently loaded " |
| "objects"), NULL); |
| DEFINE_bool(initfirst, options::DASH_Z, '\0', false, |
| N_("Mark DSO to be initialized first at runtime"), |
| NULL); |
| DEFINE_bool(interpose, options::DASH_Z, '\0', false, |
| N_("Mark object to interpose all DSOs but executable"), |
| NULL); |
| DEFINE_bool(unique, options::DASH_Z, '\0', false, |
| N_("Mark DSO to be loaded at most once, and only in the main namespace"), |
| N_("Do not mark the DSO as one to be loaded only in the main namespace")); |
| DEFINE_bool_alias(lazy, now, options::DASH_Z, '\0', |
| N_("Mark object for lazy runtime binding"), |
| NULL, true); |
| DEFINE_bool(loadfltr, options::DASH_Z, '\0', false, |
| N_("Mark object requiring immediate process"), |
| NULL); |
| DEFINE_uint64(max_page_size, options::DASH_Z, '\0', 0, |
| N_("Set maximum page size to SIZE"), N_("SIZE")); |
| DEFINE_bool(muldefs, options::DASH_Z, '\0', false, |
| N_("Allow multiple definitions of symbols"), |
| NULL); |
| // copyreloc is here in the list because there is only -z |
| // nocopyreloc, not -z copyreloc. |
| DEFINE_bool(copyreloc, options::DASH_Z, '\0', true, |
| NULL, |
| N_("Do not create copy relocs")); |
| DEFINE_bool(nodefaultlib, options::DASH_Z, '\0', false, |
| N_("Mark object not to use default search paths"), |
| NULL); |
| DEFINE_bool(nodelete, options::DASH_Z, '\0', false, |
| N_("Mark DSO non-deletable at runtime"), |
| NULL); |
| DEFINE_bool(nodlopen, options::DASH_Z, '\0', false, |
| N_("Mark DSO not available to dlopen"), |
| NULL); |
| DEFINE_bool(nodump, options::DASH_Z, '\0', false, |
| N_("Mark DSO not available to dldump"), |
| NULL); |
| DEFINE_bool(noexecstack, options::DASH_Z, '\0', false, |
| N_("Mark output as not requiring executable stack"), NULL); |
| DEFINE_bool(now, options::DASH_Z, '\0', false, |
| N_("Mark object for immediate function binding"), |
| NULL); |
| DEFINE_bool(origin, options::DASH_Z, '\0', false, |
| N_("Mark DSO to indicate that needs immediate $ORIGIN " |
| "processing at runtime"), NULL); |
| DEFINE_bool(relro, options::DASH_Z, '\0', DEFAULT_LD_Z_RELRO, |
| N_("Where possible mark variables read-only after relocation"), |
| N_("Don't mark variables read-only after relocation")); |
| DEFINE_uint64(stack_size, options::DASH_Z, '\0', 0, |
| N_("Set PT_GNU_STACK segment p_memsz to SIZE"), N_("SIZE")); |
| DEFINE_enum(start_stop_visibility, options::DASH_Z, '\0', "protected", |
| N_("ELF symbol visibility for synthesized " |
| "__start_* and __stop_* symbols"), |
| ("[default,internal,hidden,protected]"), false, |
| {"default", "internal", "hidden", "protected"}); |
| DEFINE_bool(text, options::DASH_Z, '\0', false, |
| N_("Do not permit relocations in read-only segments"), |
| N_("Permit relocations in read-only segments")); |
| DEFINE_bool_alias(textoff, text, options::DASH_Z, '\0', |
| N_("Permit relocations in read-only segments"), |
| NULL, true); |
| DEFINE_bool(text_unlikely_segment, options::DASH_Z, '\0', false, |
| N_("Move .text.unlikely sections to a separate segment."), |
| N_("Do not move .text.unlikely sections to a separate " |
| "segment.")); |
| DEFINE_bool(keep_text_section_prefix, options::DASH_Z, '\0', false, |
| N_("Keep .text.hot, .text.startup, .text.exit and .text.unlikely " |
| "as separate sections in the final binary."), |
| N_("Merge all .text.* prefix sections.")); |
| |
| |
| public: |
| typedef options::Dir_list Dir_list; |
| |
| General_options(); |
| |
| // Does post-processing on flags, making sure they all have |
| // non-conflicting values. Also converts some flags from their |
| // "standard" types (string, etc), to another type (enum, DirList), |
| // which can be accessed via a separate method. Dies if it notices |
| // any problems. |
| void finalize(); |
| |
| // True if we printed the version information. |
| bool |
| printed_version() const |
| { return this->printed_version_; } |
| |
| // The macro defines output() (based on --output), but that's a |
| // generic name. Provide this alternative name, which is clearer. |
| const char* |
| output_file_name() const |
| { return this->output(); } |
| |
| // This is not defined via a flag, but combines flags to say whether |
| // the output is position-independent or not. |
| bool |
| output_is_position_independent() const |
| { return this->shared() || this->pie(); } |
| |
| // Return true if the output is something that can be exec()ed, such |
| // as a static executable, or a position-dependent or |
| // position-independent executable, but not a dynamic library or an |
| // object file. |
| bool |
| output_is_executable() const |
| { return !this->shared() && !this->relocatable(); } |
| |
| // This would normally be static(), and defined automatically, but |
| // since static is a keyword, we need to come up with our own name. |
| bool |
| is_static() const |
| { return static_; } |
| |
| // In addition to getting the input and output formats as a string |
| // (via format() and oformat()), we also give access as an enum. |
| enum Object_format |
| { |
| // Ordinary ELF. |
| OBJECT_FORMAT_ELF, |
| // Straight binary format. |
| OBJECT_FORMAT_BINARY |
| }; |
| |
| // Convert a string to an Object_format. Gives an error if the |
| // string is not recognized. |
| static Object_format |
| string_to_object_format(const char* arg); |
| |
| // Convert an Object_format to string. |
| static const char* |
| object_format_to_string(Object_format); |
| |
| // Note: these functions are not very fast. |
| Object_format format_enum() const; |
| Object_format oformat_enum() const; |
| |
| // Return whether FILENAME is in a system directory. |
| bool |
| is_in_system_directory(const std::string& name) const; |
| |
| // RETURN whether SYMBOL_NAME should be kept, according to symbols_to_retain_. |
| bool |
| should_retain_symbol(const char* symbol_name) const |
| { |
| if (symbols_to_retain_.empty()) // means flag wasn't specified |
| return true; |
| return symbols_to_retain_.find(symbol_name) != symbols_to_retain_.end(); |
| } |
| |
| // These are the best way to get access to the execstack state, |
| // not execstack() and noexecstack() which are hard to use properly. |
| bool |
| is_execstack_set() const |
| { return this->execstack_status_ != EXECSTACK_FROM_INPUT; } |
| |
| bool |
| is_stack_executable() const |
| { return this->execstack_status_ == EXECSTACK_YES; } |
| |
| bool |
| icf_enabled() const |
| { return this->icf_status_ != ICF_NONE; } |
| |
| bool |
| icf_safe_folding() const |
| { return this->icf_status_ == ICF_SAFE; } |
| |
| // The --demangle option takes an optional string, and there is also |
| // a --no-demangle option. This is the best way to decide whether |
| // to demangle or not. |
| bool |
| do_demangle() const |
| { return this->do_demangle_; } |
| |
| // Returns TRUE if any plugin libraries have been loaded. |
| bool |
| has_plugins() const |
| { return this->plugins_ != NULL; } |
| |
| // Return a pointer to the plugin manager. |
| Plugin_manager* |
| plugins() const |
| { return this->plugins_; } |
| |
| // True iff SYMBOL was found in the file specified by dynamic-list. |
| bool |
| in_dynamic_list(const char* symbol) const |
| { return this->dynamic_list_.version_script_info()->symbol_is_local(symbol); } |
| |
| // True if a --dynamic-list script was provided. |
| bool |
| have_dynamic_list() const |
| { return this->have_dynamic_list_; } |
| |
| // Finalize the dynamic list. |
| void |
| finalize_dynamic_list() |
| { this->dynamic_list_.version_script_info()->finalize(); } |
| |
| // The mode selected by the --incremental options. |
| enum Incremental_mode |
| { |
| // No incremental linking (--no-incremental). |
| INCREMENTAL_OFF, |
| // Incremental update only (--incremental-update). |
| INCREMENTAL_UPDATE, |
| // Force a full link, but prepare for subsequent incremental link |
| // (--incremental-full). |
| INCREMENTAL_FULL, |
| // Incremental update if possible, fallback to full link (--incremental). |
| INCREMENTAL_AUTO |
| }; |
| |
| // The incremental linking mode. |
| Incremental_mode |
| incremental_mode() const |
| { return this->incremental_mode_; } |
| |
| // The disposition given by the --incremental-changed, |
| // --incremental-unchanged or --incremental-unknown option. The |
| // value may change as we proceed parsing the command line flags. |
| Incremental_disposition |
| incremental_disposition() const |
| { return this->incremental_disposition_; } |
| |
| void |
| set_incremental_disposition(Incremental_disposition disp) |
| { this->incremental_disposition_ = disp; } |
| |
| // The disposition to use for startup files (those that precede the |
| // first --incremental-changed, etc. option). |
| Incremental_disposition |
| incremental_startup_disposition() const |
| { return this->incremental_startup_disposition_; } |
| |
| // Return true if S is the name of a library excluded from automatic |
| // symbol export. |
| bool |
| check_excluded_libs(const std::string &s) const; |
| |
| // If an explicit start address was given for section SECNAME with |
| // the --section-start option, return true and set *PADDR to the |
| // address. Otherwise return false. |
| bool |
| section_start(const char* secname, uint64_t* paddr) const; |
| |
| // Return whether any --section-start option was used. |
| bool |
| any_section_start() const |
| { return !this->section_starts_.empty(); } |
| |
| enum Fix_v4bx |
| { |
| // Leave original instruction. |
| FIX_V4BX_NONE, |
| // Replace instruction. |
| FIX_V4BX_REPLACE, |
| // Generate an interworking veneer. |
| FIX_V4BX_INTERWORKING |
| }; |
| |
| Fix_v4bx |
| fix_v4bx() const |
| { return (this->fix_v4bx_); } |
| |
| enum Endianness |
| { |
| ENDIANNESS_NOT_SET, |
| ENDIANNESS_BIG, |
| ENDIANNESS_LITTLE |
| }; |
| |
| Endianness |
| endianness() const |
| { return this->endianness_; } |
| |
| enum Bsymbolic_kind |
| { |
| BSYMBOLIC_NONE, |
| BSYMBOLIC_FUNCTIONS, |
| BSYMBOLIC_ALL, |
| }; |
| |
| bool |
| Bsymbolic() const |
| { return this->bsymbolic_ == BSYMBOLIC_ALL; } |
| |
| bool |
| Bsymbolic_functions() const |
| { return this->bsymbolic_ == BSYMBOLIC_FUNCTIONS; } |
| |
| bool |
| discard_all() const |
| { return this->discard_locals_ == DISCARD_ALL; } |
| |
| bool |
| discard_locals() const |
| { return this->discard_locals_ == DISCARD_LOCALS; } |
| |
| bool |
| discard_sec_merge() const |
| { return this->discard_locals_ == DISCARD_SEC_MERGE; } |
| |
| enum Orphan_handling |
| { |
| // Place orphan sections normally (default). |
| ORPHAN_PLACE, |
| // Discard all orphan sections. |
| ORPHAN_DISCARD, |
| // Warn when placing orphan sections. |
| ORPHAN_WARN, |
| // Issue error for orphan sections. |
| ORPHAN_ERROR |
| }; |
| |
| Orphan_handling |
| orphan_handling_enum() const |
| { return this->orphan_handling_enum_; } |
| |
| elfcpp::STV |
| start_stop_visibility_enum() const |
| { return this->start_stop_visibility_enum_; } |
| |
| enum Power10_stubs |
| { |
| // Use Power10 insns on @notoc calls/branches, non-Power10 elsewhere. |
| POWER10_STUBS_AUTO, |
| // Don't use Power10 insns |
| POWER10_STUBS_NO, |
| // Always use Power10 insns |
| POWER10_STUBS_YES |
| }; |
| |
| Power10_stubs |
| power10_stubs_enum() const |
| { return this->power10_stubs_enum_; } |
| |
| private: |
| // Don't copy this structure. |
| General_options(const General_options&); |
| General_options& operator=(const General_options&); |
| |
| // What local symbols to discard. |
| enum Discard_locals |
| { |
| // Locals in merge sections (default). |
| DISCARD_SEC_MERGE, |
| // None (--discard-none). |
| DISCARD_NONE, |
| // Temporary locals (--discard-locals/-X). |
| DISCARD_LOCALS, |
| // All locals (--discard-all/-x). |
| DISCARD_ALL |
| }; |
| |
| // Whether to mark the stack as executable. |
| enum Execstack |
| { |
| // Not set on command line. |
| EXECSTACK_FROM_INPUT, |
| // Mark the stack as executable (-z execstack). |
| EXECSTACK_YES, |
| // Mark the stack as not executable (-z noexecstack). |
| EXECSTACK_NO |
| }; |
| |
| enum Icf_status |
| { |
| // Do not fold any functions (Default or --icf=none). |
| ICF_NONE, |
| // All functions are candidates for folding. (--icf=all). |
| ICF_ALL, |
| // Only ctors and dtors are candidates for folding. (--icf=safe). |
| ICF_SAFE |
| }; |
| |
| void |
| set_icf_status(Icf_status value) |
| { this->icf_status_ = value; } |
| |
| void |
| set_execstack_status(Execstack value) |
| { this->execstack_status_ = value; } |
| |
| void |
| set_do_demangle(bool value) |
| { this->do_demangle_ = value; } |
| |
| void |
| set_static(bool value) |
| { static_ = value; } |
| |
| void |
| set_orphan_handling_enum(Orphan_handling value) |
| { this->orphan_handling_enum_ = value; } |
| |
| void |
| set_start_stop_visibility_enum(elfcpp::STV value) |
| { this->start_stop_visibility_enum_ = value; } |
| |
| void |
| set_power10_stubs_enum(Power10_stubs value) |
| { this->power10_stubs_enum_ = value; } |
| |
| // These are called by finalize() to set up the search-path correctly. |
| void |
| add_to_library_path_with_sysroot(const std::string& arg) |
| { this->add_search_directory_to_library_path(Search_directory(arg, true)); } |
| |
| // Apply any sysroot to the directory lists. |
| void |
| add_sysroot(); |
| |
| // Add a plugin and its arguments to the list of plugins. |
| void |
| add_plugin(const char* filename); |
| |
| // Add a plugin option. |
| void |
| add_plugin_option(const char* opt); |
| |
| void |
| copy_from_posdep_options(const Position_dependent_options&); |
| |
| // Whether we bind default visibility defined symbols locally for -shared. |
| Bsymbolic_kind bsymbolic_; |
| // Whether we printed version information. |
| bool printed_version_; |
| // Whether to mark the stack as executable. |
| Execstack execstack_status_; |
| // Whether to do code folding. |
| Icf_status icf_status_; |
| // Whether to do a static link. |
| bool static_; |
| // Whether to do demangling. |
| bool do_demangle_; |
| // List of plugin libraries. |
| Plugin_manager* plugins_; |
| // The parsed output of --dynamic-list files. For convenience in |
| // script.cc, we store this as a Script_options object, even though |
| // we only use a single Version_tree from it. |
| Script_options dynamic_list_; |
| // Whether a --dynamic-list file was provided. |
| bool have_dynamic_list_; |
| // The incremental linking mode. |
| Incremental_mode incremental_mode_; |
| // The disposition given by the --incremental-changed, |
| // --incremental-unchanged or --incremental-unknown option. The |
| // value may change as we proceed parsing the command line flags. |
| Incremental_disposition incremental_disposition_; |
| // The disposition to use for startup files (those marked |
| // INCREMENTAL_STARTUP). |
| Incremental_disposition incremental_startup_disposition_; |
| // Whether we have seen one of the options that require incremental |
| // build (--incremental-changed, --incremental-unchanged, |
| // --incremental-unknown, or --incremental-startup-unchanged). |
| bool implicit_incremental_; |
| // Libraries excluded from automatic export, via --exclude-libs. |
| Unordered_set<std::string> excluded_libs_; |
| // List of symbol-names to keep, via -retain-symbol-info. |
| Unordered_set<std::string> symbols_to_retain_; |
| // Map from section name to address from --section-start. |
| std::map<std::string, uint64_t> section_starts_; |
| // Whether to process armv4 bx instruction relocation. |
| Fix_v4bx fix_v4bx_; |
| // Endianness. |
| Endianness endianness_; |
| // What local symbols to discard. |
| Discard_locals discard_locals_; |
| // Stack of saved options for --push-state/--pop-state. |
| std::vector<Position_dependent_options*> options_stack_; |
| // Orphan handling option, decoded to an enum value. |
| Orphan_handling orphan_handling_enum_; |
| // Symbol visibility for __start_* / __stop_* magic symbols. |
| elfcpp::STV start_stop_visibility_enum_; |
| // Power10 stubs option |
| Power10_stubs power10_stubs_enum_; |
| }; |
| |
| // The position-dependent options. We use this to store the state of |
| // the commandline at a particular point in parsing for later |
| // reference. For instance, if we see "ld --whole-archive foo.a |
| // --no-whole-archive," we want to store the whole-archive option with |
| // foo.a, so when the time comes to parse foo.a we know we should do |
| // it in whole-archive mode. We could store all of General_options, |
| // but that's big, so we just pick the subset of flags that actually |
| // change in a position-dependent way. |
| |
| #define DEFINE_posdep(varname__, type__) \ |
| public: \ |
| type__ \ |
| varname__() const \ |
| { return this->varname__##_; } \ |
| \ |
| void \ |
| set_##varname__(type__ value) \ |
| { this->varname__##_ = value; } \ |
| private: \ |
| type__ varname__##_ |
| |
| class Position_dependent_options |
| { |
| public: |
| Position_dependent_options(const General_options& options |
| = Position_dependent_options::default_options_) |
| { copy_from_options(options); } |
| |
| void |
| copy_from_options(const General_options& options) |
| { |
| this->set_as_needed(options.as_needed()); |
| this->set_Bdynamic(options.Bdynamic()); |
| this->set_format_enum(options.format_enum()); |
| this->set_whole_archive(options.whole_archive()); |
| this->set_incremental_disposition(options.incremental_disposition()); |
| } |
| |
| DEFINE_posdep(as_needed, bool); |
| DEFINE_posdep(Bdynamic, bool); |
| DEFINE_posdep(format_enum, General_options::Object_format); |
| DEFINE_posdep(whole_archive, bool); |
| DEFINE_posdep(incremental_disposition, Incremental_disposition); |
| |
| private: |
| // This is a General_options with everything set to its default |
| // value. A Position_dependent_options created with no argument |
| // will take its values from here. |
| static General_options default_options_; |
| }; |
| |
| |
| // A single file or library argument from the command line. |
| |
| class Input_file_argument |
| { |
| public: |
| enum Input_file_type |
| { |
| // A regular file, name used as-is, not searched. |
| INPUT_FILE_TYPE_FILE, |
| // A library name. When used, "lib" will be prepended and ".so" or |
| // ".a" appended to make a filename, and that filename will be searched |
| // for using the -L paths. |
| INPUT_FILE_TYPE_LIBRARY, |
| // A regular file, name used as-is, but searched using the -L paths. |
| INPUT_FILE_TYPE_SEARCHED_FILE |
| }; |
| |
| // name: file name or library name |
| // type: the type of this input file. |
| // extra_search_path: an extra directory to look for the file, prior |
| // to checking the normal library search path. If this is "", |
| // then no extra directory is added. |
| // just_symbols: whether this file only defines symbols. |
| // options: The position dependent options at this point in the |
| // command line, such as --whole-archive. |
| Input_file_argument() |
| : name_(), type_(INPUT_FILE_TYPE_FILE), extra_search_path_(""), |
| just_symbols_(false), options_(), arg_serial_(0) |
| { } |
| |
| Input_file_argument(const char* name, Input_file_type type, |
| const char* extra_search_path, |
| bool just_symbols, |
| const Position_dependent_options& options) |
| : name_(name), type_(type), extra_search_path_(extra_search_path), |
| just_symbols_(just_symbols), options_(options), arg_serial_(0) |
| { } |
| |
| // You can also pass in a General_options instance instead of a |
| // Position_dependent_options. In that case, we extract the |
| // position-independent vars from the General_options and only store |
| // those. |
| Input_file_argument(const char* name, Input_file_type type, |
| const char* extra_search_path, |
| bool just_symbols, |
| const General_options& options) |
| : name_(name), type_(type), extra_search_path_(extra_search_path), |
| just_symbols_(just_symbols), options_(options), arg_serial_(0) |
| { } |
| |
| const char* |
| name() const |
| { return this->name_.c_str(); } |
| |
| const Position_dependent_options& |
| options() const |
| { return this->options_; } |
| |
| bool |
| is_lib() const |
| { return type_ == INPUT_FILE_TYPE_LIBRARY; } |
| |
| bool |
| is_searched_file() const |
| { return type_ == INPUT_FILE_TYPE_SEARCHED_FILE; } |
| |
| const char* |
| extra_search_path() const |
| { |
| return (this->extra_search_path_.empty() |
| ? NULL |
| : this->extra_search_path_.c_str()); |
| } |
| |
| // Return whether we should only read symbols from this file. |
| bool |
| just_symbols() const |
| { return this->just_symbols_; } |
| |
| // Return whether this file may require a search using the -L |
| // options. |
| bool |
| may_need_search() const |
| { |
| return (this->is_lib() |
| || this->is_searched_file() |
| || !this->extra_search_path_.empty()); |
| } |
| |
| // Set the serial number for this argument. |
| void |
| set_arg_serial(unsigned int arg_serial) |
| { this->arg_serial_ = arg_serial; } |
| |
| // Get the serial number. |
| unsigned int |
| arg_serial() const |
| { return this->arg_serial_; } |
| |
| private: |
| // We use std::string, not const char*, here for convenience when |
| // using script files, so that we do not have to preserve the string |
| // in that case. |
| std::string name_; |
| Input_file_type type_; |
| std::string extra_search_path_; |
| bool just_symbols_; |
| Position_dependent_options options_; |
| // A unique index for this file argument in the argument list. |
| unsigned int arg_serial_; |
| }; |
| |
| // A file or library, or a group, from the command line. |
| |
| class Input_argument |
| { |
| public: |
| // Create a file or library argument. |
| explicit Input_argument(Input_file_argument file) |
| : is_file_(true), file_(file), group_(NULL), lib_(NULL), script_info_(NULL) |
| { } |
| |
| // Create a group argument. |
| explicit Input_argument(Input_file_group* group) |
| : is_file_(false), group_(group), lib_(NULL), script_info_(NULL) |
| { } |
| |
| // Create a lib argument. |
| explicit Input_argument(Input_file_lib* lib) |
| : is_file_(false), group_(NULL), lib_(lib), script_info_(NULL) |
| { } |
| |
| // Return whether this is a file. |
| bool |
| is_file() const |
| { return this->is_file_; } |
| |
| // Return whether this is a group. |
| bool |
| is_group() const |
| { return !this->is_file_ && this->lib_ == NULL; } |
| |
| // Return whether this is a lib. |
| bool |
| is_lib() const |
| { return this->lib_ != NULL; } |
| |
| // Return the information about the file. |
| const Input_file_argument& |
| file() const |
| { |
| gold_assert(this->is_file_); |
| return this->file_; |
| } |
| |
| // Return the information about the group. |
| const Input_file_group* |
| group() const |
| { |
| gold_assert(!this->is_file_); |
| return this->group_; |
| } |
| |
| Input_file_group* |
| group() |
| { |
| gold_assert(!this->is_file_); |
| return this->group_; |
| } |
| |
| // Return the information about the lib. |
| const Input_file_lib* |
| lib() const |
| { |
| gold_assert(!this->is_file_); |
| gold_assert(this->lib_); |
| return this->lib_; |
| } |
| |
| Input_file_lib* |
| lib() |
| { |
| gold_assert(!this->is_file_); |
| gold_assert(this->lib_); |
| return this->lib_; |
| } |
| |
| // If a script generated this argument, store a pointer to the script info. |
| // Currently used only for recording incremental link information. |
| void |
| set_script_info(Script_info* info) |
| { this->script_info_ = info; } |
| |
| Script_info* |
| script_info() const |
| { return this->script_info_; } |
| |
| private: |
| bool is_file_; |
| Input_file_argument file_; |
| Input_file_group* group_; |
| Input_file_lib* lib_; |
| Script_info* script_info_; |
| }; |
| |
| typedef std::vector<Input_argument> Input_argument_list; |
| |
| // A group from the command line. This is a set of arguments within |
| // --start-group ... --end-group. |
| |
| class Input_file_group |
| { |
| public: |
| typedef Input_argument_list::const_iterator const_iterator; |
| |
| Input_file_group() |
| : files_() |
| { } |
| |
| // Add a file to the end of the group. |
| Input_argument& |
| add_file(const Input_file_argument& arg) |
| { |
| this->files_.push_back(Input_argument(arg)); |
| return this->files_.back(); |
| } |
| |
| // Iterators to iterate over the group contents. |
| |
| const_iterator |
| begin() const |
| { return this->files_.begin(); } |
| |
| const_iterator |
| end() const |
| { return this->files_.end(); } |
| |
| private: |
| Input_argument_list files_; |
| }; |
| |
| // A lib from the command line. This is a set of arguments within |
| // --start-lib ... --end-lib. |
| |
| class Input_file_lib |
| { |
| public: |
| typedef Input_argument_list::const_iterator const_iterator; |
| |
| Input_file_lib(const Position_dependent_options& options) |
| : files_(), options_(options) |
| { } |
| |
| // Add a file to the end of the lib. |
| Input_argument& |
| add_file(const Input_file_argument& arg) |
| { |
| this->files_.push_back(Input_argument(arg)); |
| return this->files_.back(); |
| } |
| |
| const Position_dependent_options& |
| options() const |
| { return this->options_; } |
| |
| // Iterators to iterate over the lib contents. |
| |
| const_iterator |
| begin() const |
| { return this->files_.begin(); } |
| |
| const_iterator |
| end() const |
| { return this->files_.end(); } |
| |
| size_t |
| size() const |
| { return this->files_.size(); } |
| |
| private: |
| Input_argument_list files_; |
| Position_dependent_options options_; |
| }; |
| |
| // A list of files from the command line or a script. |
| |
| class Input_arguments |
| { |
| public: |
| typedef Input_argument_list::const_iterator const_iterator; |
| |
| Input_arguments() |
| : input_argument_list_(), in_group_(false), in_lib_(false), file_count_(0) |
| { } |
| |
| // Add a file. |
| Input_argument& |
| add_file(Input_file_argument& arg); |
| |
| // Start a group (the --start-group option). |
| void |
| start_group(); |
| |
| // End a group (the --end-group option). |
| void |
| end_group(); |
| |
| // Start a lib (the --start-lib option). |
| void |
| start_lib(const Position_dependent_options&); |
| |
| // End a lib (the --end-lib option). |
| void |
| end_lib(); |
| |
| // Return whether we are currently in a group. |
| bool |
| in_group() const |
| { return this->in_group_; } |
| |
| // Return whether we are currently in a lib. |
| bool |
| in_lib() const |
| { return this->in_lib_; } |
| |
| // The number of entries in the list. |
| int |
| size() const |
| { return this->input_argument_list_.size(); } |
| |
| // Iterators to iterate over the list of input files. |
| |
| const_iterator |
| begin() const |
| { return this->input_argument_list_.begin(); } |
| |
| const_iterator |
| end() const |
| { return this->input_argument_list_.end(); } |
| |
| // Return whether the list is empty. |
| bool |
| empty() const |
| { return this->input_argument_list_.empty(); } |
| |
| // Return the number of input files. This may be larger than |
| // input_argument_list_.size(), because of files that are part |
| // of groups or libs. |
| int |
| number_of_input_files() const |
| { return this->file_count_; } |
| |
| private: |
| Input_argument_list input_argument_list_; |
| bool in_group_; |
| bool in_lib_; |
| unsigned int file_count_; |
| }; |
| |
| |
| // All the information read from the command line. These are held in |
| // three separate structs: one to hold the options (--foo), one to |
| // hold the filenames listed on the commandline, and one to hold |
| // linker script information. This third is not a subset of the other |
| // two because linker scripts can be specified either as options (via |
| // -T) or as a file. |
| |
| class Command_line |
| { |
| public: |
| typedef Input_arguments::const_iterator const_iterator; |
| |
| Command_line(); |
| |
| // Process the command line options. This will exit with an |
| // appropriate error message if an unrecognized option is seen. |
| void |
| process(int argc, const char** argv); |
| |
| // Process one command-line option. This takes the index of argv to |
| // process, and returns the index for the next option. no_more_options |
| // is set to true if argv[i] is "--". |
| int |
| process_one_option(int argc, const char** argv, int i, |
| bool* no_more_options); |
| |
| // Get the general options. |
| const General_options& |
| options() const |
| { return this->options_; } |
| |
| // Get the position dependent options. |
| const Position_dependent_options& |
| position_dependent_options() const |
| { return this->position_options_; } |
| |
| // Get the linker-script options. |
| Script_options& |
| script_options() |
| { return this->script_options_; } |
| |
| // Finalize the version-script options and return them. |
| const Version_script_info& |
| version_script(); |
| |
| // Get the input files. |
| Input_arguments& |
| inputs() |
| { return this->inputs_; } |
| |
| // The number of input files. |
| int |
| number_of_input_files() const |
| { return this->inputs_.number_of_input_files(); } |
| |
| // Iterators to iterate over the list of input files. |
| |
| const_iterator |
| begin() const |
| { return this->inputs_.begin(); } |
| |
| const_iterator |
| end() const |
| { return this->inputs_.end(); } |
| |
| private: |
| Command_line(const Command_line&); |
| Command_line& operator=(const Command_line&); |
| |
| // This is a dummy class to provide a constructor that runs before |
| // the constructor for the General_options. The Pre_options constructor |
| // is used as a hook to set the flag enabling the options to register |
| // themselves. |
| struct Pre_options { |
| Pre_options(); |
| }; |
| |
| // This must come before options_! |
| Pre_options pre_options_; |
| General_options options_; |
| Position_dependent_options position_options_; |
| Script_options script_options_; |
| Input_arguments inputs_; |
| }; |
| |
| } // End namespace gold. |
| |
| #endif // !defined(GOLD_OPTIONS_H) |