// options.h -- handle command line options for gold -*- C++ -*-
-// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
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.
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);
#default_value__, helpstring__, helparg__, false, \
double, double, options::parse_double)
+#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)
+
#define DEFINE_string(varname__, dashes__, shortname__, default_value__, \
helpstring__, helparg__) \
DEFINE_var(varname__, dashes__, shortname__, default_value__, \
{ }
// This is the usual constructor.
- Search_directory(const char* name, bool put_in_sysroot)
+ 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())
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(Bsymbolic, options::ONE_DASH, '\0', false,
N_("Bind defined symbols locally"), NULL);
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 (default)"),
+ N_("Handle constructors as directed by compiler"));
+
DEFINE_bool(define_common, options::TWO_DASHES, 'd', false,
N_("Define common symbols"),
N_("Do not define common symbols"));
NULL);
DEFINE_bool(detect_odr_violations, options::TWO_DASHES, '\0', false,
- N_("Try to detect violations of the One Definition Rule"),
- NULL);
+ N_("Look for violations of the C++ One Definition Rule"),
+ N_("Do not look for violations of the C++ One Definition Rule"));
DEFINE_bool(discard_all, options::TWO_DASHES, 'x', false,
N_("Delete all local symbols"), NULL);
DEFINE_special(EB, options::ONE_DASH, '\0',
N_("Link big-endian objects."), NULL);
- DEFINE_bool(eh_frame_hdr, options::TWO_DASHES, '\0', false,
- N_("Create exception frame header"), NULL);
-
DEFINE_special(EL, options::ONE_DASH, '\0',
N_("Link little-endian objects."), NULL);
+ DEFINE_bool(eh_frame_hdr, options::TWO_DASHES, '\0', false,
+ N_("Create exception frame header"), NULL);
+
DEFINE_bool(enum_size_warning, options::TWO_DASHES, '\0', true, NULL,
N_("(ARM only) Do not warn about objects with incompatible "
"enum sizes"));
+ 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"));
N_("(ARM only) Fix binaries for Cortex-A8 erratum."),
N_("(ARM only) Do not fix binaries for Cortex-A8 erratum."));
+ 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(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(g, options::EXACTLY_ONE_DASH, '\0', false,
N_("Ignored"), NULL);
+ DEFINE_bool(gnu_unique, options::TWO_DASHES, '\0', true,
+ N_("Enable STB_GNU_UNIQUE symbol binding (default)"),
+ N_("Disable STB_GNU_UNIQUE symbol binding"));
+
DEFINE_string(soname, options::ONE_DASH, 'h', NULL,
N_("Set shared library name"), N_("FILENAME"));
- DEFINE_bool(i, options::EXACTLY_ONE_DASH, '\0', false,
- N_("Ignored"), NULL);
-
DEFINE_double(hash_bucket_empty_fraction, options::TWO_DASHES, '\0', 0.0,
N_("Min fraction of empty buckets in dynamic hash"),
N_("FRACTION"));
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_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"),
+ N_("PERCENT"));
+
DEFINE_string(init, options::ONE_DASH, '\0', "_init",
N_("Call SYMBOL at load-time"), N_("SYMBOL"));
N_("Keep files mapped across passes (default)"),
N_("Release mapped files after each pass"));
+ DEFINE_bool(ld_generated_unwind_info, options::TWO_DASHES, '\0', true,
+ N_("Generate unwind information for PLT (default)"),
+ N_("Do not generate unwind information for PLT"));
+
DEFINE_special(library, options::TWO_DASHES, 'l',
N_("Search for library LIBNAME"), N_("LIBNAME"));
NULL);
DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "",
- N_("Ignored for compatibility"), N_("EMULATION"));
+ N_("Set GNU linker emulation; obsolete"), N_("EMULATION"));
DEFINE_bool(print_map, options::TWO_DASHES, 'M', false,
N_("Write map file on standard output"), NULL);
DEFINE_bool(preread_archive_symbols, options::TWO_DASHES, '\0', false,
N_("Preread archive symbols when multi-threaded"), NULL);
+ 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_bool(relocatable, options::EXACTLY_ONE_DASH, 'r', false,
N_("Generate relocatable output"), NULL);
+ DEFINE_bool_alias(i, relocatable, options::EXACTLY_ONE_DASH, '\0',
+ N_("Synonym for -r"), NULL, false);
DEFINE_bool(relax, options::TWO_DASHES, '\0', false,
N_("Relax branches on certain targets"), NULL);
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"),
+ {"ignore-all", "report-all", "ignore-in-object-files",
+ "ignore-in-shared-libs"});
+
DEFINE_bool(verbose, options::TWO_DASHES, '\0', false,
N_("Synonym for --debug=files"), NULL);
N_("Don't mark variables read-only after relocation"));
DEFINE_bool(text, options::DASH_Z, '\0', false,
N_("Do not permit relocations in read-only segments"),
- NULL);
+ N_("Permit relocations in read-only segments (default)"));
DEFINE_bool_alias(textoff, text, options::DASH_Z, '\0',
N_("Permit relocations in read-only segments (default)"),
NULL, true);
incremental_disposition() const
{ return this->incremental_disposition_; }
+ // 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
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.
// These are called by finalize() to set up the search-path correctly.
void
- add_to_library_path_with_sysroot(const char* arg)
+ 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.
// --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 or
- // --incremental-unknown)
+ // 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_;
// command line, such as --whole-archive.
Input_file_argument()
: name_(), type_(INPUT_FILE_TYPE_FILE), extra_search_path_(""),
- just_symbols_(false), options_()
+ just_symbols_(false), options_(), arg_serial_(0)
{ }
Input_file_argument(const char* name, Input_file_type type,
bool just_symbols,
const Position_dependent_options& options)
: name_(name), type_(type), extra_search_path_(extra_search_path),
- just_symbols_(just_symbols), options_(options)
+ just_symbols_(just_symbols), options_(options), arg_serial_(0)
{ }
// You can also pass in a General_options instance instead of a
bool just_symbols,
const General_options& options)
: name_(name), type_(type), extra_search_path_(extra_search_path),
- just_symbols_(just_symbols), options_(options)
+ just_symbols_(just_symbols), options_(options), arg_serial_(0)
{ }
const char*
|| !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
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.
public:
// Create a file or library argument.
explicit Input_argument(Input_file_argument file)
- : is_file_(true), file_(file), group_(NULL), lib_(NULL)
+ : 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)
+ : 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)
+ : is_file_(false), group_(NULL), lib_(lib), script_info_(NULL)
{ }
// Return whether this is a file.
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;
{ }
// Add a file to the end of the group.
- void
+ Input_argument&
add_file(const Input_file_argument& arg)
- { this->files_.push_back(Input_argument(arg)); }
+ {
+ this->files_.push_back(Input_argument(arg));
+ return this->files_.back();
+ }
// Iterators to iterate over the group contents.
{ }
// Add a file to the end of the lib.
- void
+ Input_argument&
add_file(const Input_file_argument& arg)
- { this->files_.push_back(Input_argument(arg)); }
+ {
+ this->files_.push_back(Input_argument(arg));
+ return this->files_.back();
+ }
const Position_dependent_options&
options() const
typedef Input_argument_list::const_iterator const_iterator;
Input_arguments()
- : input_argument_list_(), in_group_(false), in_lib_(false)
+ : input_argument_list_(), in_group_(false), in_lib_(false), file_count_(0)
{ }
// Add a file.
- void
- add_file(const Input_file_argument& arg);
+ Input_argument&
+ add_file(Input_file_argument& arg);
// Start a group (the --start-group option).
void
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_;
};
// The number of input files.
int
number_of_input_files() const
- { return this->inputs_.size(); }
+ { return this->inputs_.number_of_input_files(); }
// Iterators to iterate over the list of input files.
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