// options.h -- handle command line options for gold -*- C++ -*-
-// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
class Target;
class Plugin_manager;
+// Incremental build action for a specific file, as selected by the user.
+
+enum Incremental_disposition
+{
+ // 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.
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_;
};
N_("Try to detect violations of the One Definition Rule"),
NULL);
+ DEFINE_bool(discard_locals, options::TWO_DASHES, 'X', false,
+ N_("Delete all temporary local symbols"), NULL);
+
+ 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"));
+
DEFINE_string(entry, options::TWO_DASHES, 'e', NULL,
N_("Set program start address"), N_("ADDRESS"));
+ 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"), NULL);
+ N_("Export all dynamic symbols"),
+ N_("Do not export all dynamic symbols (default)"));
DEFINE_bool(eh_frame_hdr, options::TWO_DASHES, '\0', false,
N_("Create exception frame header"), NULL);
DEFINE_string(dynamic_linker, options::TWO_DASHES, 'I', NULL,
N_("Set dynamic linker path"), N_("PROGRAM"));
+ DEFINE_bool(incremental, options::TWO_DASHES, '\0', false,
+ N_("Work in progress; do not use"),
+ N_("Do a full build"));
+
+ 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(just_symbols, options::TWO_DASHES, '\0',
N_("Read only symbol values from FILE"), N_("FILE"));
#ifdef ENABLE_PLUGINS
DEFINE_special(plugin, options::TWO_DASHES, '\0',
- N_("Load a plugin library"), N_("PLUGIN[,ARG,...]"));
+ N_("Load a plugin library"), N_("PLUGIN"));
+ DEFINE_special(plugin_opt, options::TWO_DASHES, '\0',
+ N_("Pass an option to the plugin"), N_("OPTION"));
#endif
DEFINE_bool(preread_archive_symbols, options::TWO_DASHES, '\0', false,
DEFINE_bool(relax, options::TWO_DASHES, '\0', false,
N_("Relax branches on certain targets"), NULL);
+ DEFINE_string(retain_symbols_file, options::EXACTLY_ONE_DASH, '\0', NULL,
+ N_("keep only symbols listed in this file"), N_("[file]"));
+
// -R really means -rpath, but can mean --just-symbols for
// compatibility with GNU ld. -rpath is always -rpath, so we list
// it separately.
DEFINE_bool(strip_debug_gdb, options::TWO_DASHES, '\0', false,
N_("Strip debug symbols that are unused by gdb "
"(at least versions <= 6.7)"), NULL);
+ DEFINE_bool(strip_lto_sections, options::TWO_DASHES, '\0', true,
+ N_("Strip LTO intermediate code sections"), NULL);
+
+ 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(shared, options::ONE_DASH, '\0', false,
N_("Generate shared library"), NULL);
+ DEFINE_bool(Bshareable, options::ONE_DASH, '\0', false,
+ N_("Generate shared library"), NULL);
+
// 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_bool(icf, options::TWO_DASHES, '\0', false,
+ N_("Identical Code Folding (Fold identical functions)"),
+ N_("Don't fold identical functions (default)"));
+
+ DEFINE_uint(icf_iterations, options::TWO_DASHES , '\0', 0,
+ N_("Number of iterations of ICF (default 2)"), N_("COUNT"));
+
+ 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_set(keep_unique, options::TWO_DASHES, '\0',
+ N_("Do not fold this symbol during ICF"), N_("SYMBOL"));
+
+ DEFINE_bool(gc_sections, options::TWO_DASHES, '\0', false,
+ N_("Remove unused sections"),
+ N_("Don't remove unused sections (default)"));
+
+ 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(stats, options::TWO_DASHES, '\0', false,
N_("Print resource usage statistics"), NULL);
DEFINE_special(version_script, options::TWO_DASHES, '\0',
N_("Read version script"), N_("FILE"));
+ 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(whole_archive, options::TWO_DASHES, '\0', false,
N_("Include all archive contents"),
N_("Include only needed archive contents"));
NULL);
DEFINE_bool(execstack, options::DASH_Z, '\0', false,
N_("Mark output as requiring executable stack"), NULL);
- DEFINE_uint64(max_page_size, options::DASH_Z, '\0', 0,
- N_("Set maximum page size to SIZE"), N_("SIZE"));
- DEFINE_bool(noexecstack, options::DASH_Z, '\0', false,
- N_("Mark output as not requiring executable stack"), 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(lazy, options::DASH_Z, '\0', false,
+ N_("Mark object for lazy runtime binding (default)"),
+ NULL);
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(nodefaultlib, options::DASH_Z, '\0', false,
N_("Mark object not to use default search paths"),
NULL);
DEFINE_bool(nodump, options::DASH_Z, '\0', false,
N_("Mark DSO not available to dldump"),
NULL);
- DEFINE_bool(relro, options::DASH_Z, '\0', false,
- N_("Where possible mark variables read-only after relocation"),
- N_("Don't mark variables read-only after relocation"));
+ 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', false,
+ N_("Where possible mark variables read-only after relocation"),
+ N_("Don't mark variables read-only after relocation"));
public:
typedef options::Dir_list Dir_list;
// 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*
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);
+
// 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
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); }
+
+ // 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_; }
+
+ // Return true if S is the name of a library excluded from automatic
+ // symbol export.
+ bool
+ check_excluded_libs (const std::string &s) const;
+
private:
// Don't copy this structure.
General_options(const General_options&);
// Add a plugin and its arguments to the list of plugins.
void
- add_plugin(const char* arg);
+ add_plugin(const char *filename);
+
+ // Add a plugin option.
+ void
+ add_plugin_option(const char* opt);
+ // Whether we printed version information.
+ bool printed_version_;
// Whether to mark the stack as executable.
Execstack execstack_status_;
// Whether to do a static link.
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_;
+ // 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_;
+ // Whether we have seen one of the options that require incremental
+ // build (--incremental-changed, --incremental-unchanged or
+ // --incremental-unknown)
+ 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_;
};
// The position-dependent options. We use this to store the state of
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
Input_file_group* group_;
};
+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 std::vector<Input_argument> Files;
- typedef Files::const_iterator const_iterator;
+ typedef Input_argument_list::const_iterator const_iterator;
Input_file_group()
: files_()
{ return this->files_.end(); }
private:
- Files files_;
+ Input_argument_list files_;
};
// A list of files from the command line or a script.
class Input_arguments
{
public:
- typedef std::vector<Input_argument> Input_argument_list;
typedef Input_argument_list::const_iterator const_iterator;
Input_arguments()
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_;
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