// 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 Input_file_group;
class Position_dependent_options;
class Target;
+class Plugin_manager;
// 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
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_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);
user_set_##varname__() const \
{ return this->varname__##_.user_set_via_option; } \
\
+ void \
+ set_user_set_##varname__() \
+ { this->varname__##_.user_set_via_option = true; } \
+ \
private: \
struct Struct_##varname__ : public options::Struct_var \
{ \
// 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.
+// 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__, \
false, bool, bool, options::parse_bool) \
struct Struct_no_##varname__ : public options::Struct_var \
{ \
- Struct_no_##varname__() : option("no-" #varname__, dashes__, '\0', \
+ Struct_no_##varname__() : option((dashes__ == options::DASH_Z \
+ ? "no" #varname__ \
+ : "no-" #varname__), \
+ dashes__, '\0', \
default_value__ ? "false" : "true", \
no_helpstring__, NULL, false, this) \
{ } \
}; \
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) \
+ 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) \
+ { } \
+ \
+ 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_uint(varname__, dashes__, shortname__, default_value__, \
helpstring__, helparg__) \
DEFINE_var(varname__, dashes__, shortname__, default_value__, \
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) \
+ 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(); }
+
// When you have a list of possible values (expressed as string)
// After helparg__ should come an initializer list, like
// {"foo", "bar", "baz"}
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) \
+ { } \
+ \
+ 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) \
+ { } \
+ \
+ 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 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
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
DEFINE_bool(Bdynamic, options::ONE_DASH, '\0', true,
N_("-l searches for shared libraries"), NULL);
- // Bstatic affects the same variable as Bdynamic, so we have to use
- // the "special" macro to make that happen.
- DEFINE_special(Bstatic, options::ONE_DASH, '\0',
- N_("-l does not search 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(Bsymbolic, options::ONE_DASH, '\0', false,
N_("Bind defined symbols locally"), NULL);
+ DEFINE_bool(Bsymbolic_functions, options::ONE_DASH, '\0', false,
+ N_("Bind defined function symbols locally"), NULL);
+
DEFINE_optional_string(build_id, options::TWO_DASHES, '\0', "sha1",
N_("Generate build ID note"),
N_("[=STYLE]"));
+ DEFINE_bool(check_sections, options::TWO_DASHES, '\0', true,
+ N_("Check segment addresses for overlaps (default)"),
+ N_("Do not check segment addresses for overlaps"));
+
#ifdef HAVE_ZLIB_H
DEFINE_enum(compress_debug_sections, options::TWO_DASHES, '\0', "none",
N_("Compress .debug_* sections in the output file"),
N_("Try to detect violations of the One Definition Rule"),
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_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_bool(fatal_warnings, options::TWO_DASHES, '\0', false,
+ N_("Treat warnings as errors"),
+ N_("Do not treat warnings as errors"));
+
DEFINE_string(soname, options::ONE_DASH, 'h', NULL,
N_("Set shared library name"), N_("FILENAME"));
DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "",
N_("Ignored for compatibility"), N_("EMULATION"));
+ 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"));
+
+ 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_enable(new_dtags, options::EXACTLY_TWO_DASHES, '\0', false,
+ N_("Enable use of DT_RUNPATH and DT_FLAGS"),
+ N_("Disable use of DT_RUNPATH and DT_FLAGS"));
+
+ DEFINE_bool(noinhibit_exec, options::TWO_DASHES, '\0', false,
+ N_("Create an output file even if errors occur"), NULL);
+
+ DEFINE_bool_alias(no_undefined, defs, options::TWO_DASHES, '\0',
+ N_("Report undefined symbols (even with --shared)"),
+ NULL, false);
+
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]"));
+#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"));
+#endif
+
+ DEFINE_bool(preread_archive_symbols, options::TWO_DASHES, '\0', false,
+ N_("Preread archive symbols when multi-threaded"), NULL);
+
+ DEFINE_string(print_symbol_counts, options::TWO_DASHES, '\0', NULL,
+ N_("Print symbols defined and used for each input"),
+ N_("FILENAME"));
+
+ DEFINE_bool(Qy, options::EXACTLY_ONE_DASH, '\0', false,
+ N_("Ignored for SVR4 compatibility"), NULL);
+
DEFINE_bool(emit_relocs, options::TWO_DASHES, 'q', false,
N_("Generate relocations in output"), NULL);
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"), NULL);
+
// -R really means -rpath, but can mean --just-symbols for
// compatibility with GNU ld. -rpath is always -rpath, so we list
// it separately.
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 <= 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, 's', 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(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_string(sysroot, options::TWO_DASHES, '\0', "",
N_("Set target system root directory"), N_("DIR"));
+ DEFINE_bool(trace, options::TWO_DASHES, 't', false,
+ N_("Print the name of each input file"), NULL);
+
DEFINE_special(script, options::TWO_DASHES, 'T',
N_("Read linker script"), N_("FILE"));
DEFINE_uint64(Ttext, options::ONE_DASH, '\0', -1U,
N_("Set the address of the text segment"), N_("ADDRESS"));
+ DEFINE_set(undefined, options::TWO_DASHES, 'u',
+ N_("Create undefined reference to SYMBOL"), N_("SYMBOL"));
+
DEFINE_bool(verbose, options::TWO_DASHES, '\0', false,
N_("Synonym for --debug=files"), NULL);
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"));
+
+ DEFINE_set(trace_symbol, options::TWO_DASHES, 'y',
+ N_("Trace references to symbol"), N_("SYMBOL"));
+
+ DEFINE_string(Y, options::EXACTLY_ONE_DASH, 'Y', "",
+ N_("Default search path for Solaris compatibility"),
+ N_("PATH"));
+
DEFINE_special(start_group, options::TWO_DASHES, '(',
N_("Start a library search group"), NULL);
DEFINE_special(end_group, options::TWO_DASHES, ')',
// The -z options.
- // Both execstack and noexecstack differ from the default execstack_
- // value, so we need to use different variables for them.
+ 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_("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(loadfltr, options::DASH_Z, '\0', false,
+ N_("Mark object requiring immediate process"),
+ NULL);
+ 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(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(origin, options::DASH_Z, '\0', false,
+ N_("Mark DSO to indicate that needs immediate $ORIGIN "
+ "processing at runtime"), NULL);
public:
typedef options::Dir_list Dir_list;
output_is_position_independent() const
{ return this->shared(); }
+ // 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->output_is_pie(); }
+
+ // Return true if the output is a position-independent executable.
+ // This is currently not supported.
+ bool
+ output_is_pie() const
+ { return false; }
+
// This would normally be static(), and defined automatically, but
// since static is a keyword, we need to come up with our own name.
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); }
+
private:
// Don't copy this structure.
General_options(const General_options&);
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);
+
// Whether to mark the stack as executable.
Execstack execstack_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_;
};
// The position-dependent options. We use this to store the state of
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