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// options.h -- handle command line options for gold -*- C++ -*-
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// options.h -- handle command line options for gold -*- C++ -*-
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// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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// This file is part of gold.
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// This program is free software; you can redistribute it and/or modify
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// This program is free software; you can redistribute it and/or modify
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// Incremental build action for a specific file, as selected by the user.
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// Incremental build action for a specific file, as selected by the user.
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enum Incremental_disposition
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enum Incremental_disposition
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{
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{
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// Startup files that appear before the first disposition option.
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// These will default to INCREMENTAL_CHECK unless the
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// --incremental-startup-unchanged option is given.
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// (For files added implicitly by gcc before any user options.)
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INCREMENTAL_STARTUP,
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// Determine the status from the timestamp (default).
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// Determine the status from the timestamp (default).
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INCREMENTAL_CHECK,
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INCREMENTAL_CHECK,
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// Assume the file changed from the previous build.
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// Assume the file changed from the previous build.
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INCREMENTAL_CHANGED,
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INCREMENTAL_CHANGED,
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// Assume the file didn't change from the previous build.
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// Assume the file didn't change from the previous build.
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extern void
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extern void
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parse_double(const char* option_name, const char* arg, double* retval);
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parse_double(const char* option_name, const char* arg, double* retval);
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extern void
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extern void
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parse_percent(const char* option_name, const char* arg, double* retval);
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extern void
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parse_string(const char* option_name, const char* arg, const char** retval);
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parse_string(const char* option_name, const char* arg, const char** retval);
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extern void
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extern void
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parse_optional_string(const char* option_name, const char* arg,
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parse_optional_string(const char* option_name, const char* arg,
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const char** retval);
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const char** retval);
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helpstring__, helparg__) \
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helpstring__, helparg__) \
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DEFINE_var(varname__, dashes__, shortname__, default_value__, \
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DEFINE_var(varname__, dashes__, shortname__, default_value__, \
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#default_value__, helpstring__, helparg__, false, \
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#default_value__, helpstring__, helparg__, false, \
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double, double, options::parse_double)
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double, double, options::parse_double)
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#define DEFINE_percent(varname__, dashes__, shortname__, default_value__, \
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helpstring__, helparg__) \
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DEFINE_var(varname__, dashes__, shortname__, default_value__ / 100.0, \
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#default_value__, helpstring__, helparg__, false, \
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double, double, options::parse_percent)
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#define DEFINE_string(varname__, dashes__, shortname__, default_value__, \
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#define DEFINE_string(varname__, dashes__, shortname__, default_value__, \
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helpstring__, helparg__) \
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helpstring__, helparg__) \
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DEFINE_var(varname__, dashes__, shortname__, default_value__, \
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DEFINE_var(varname__, dashes__, shortname__, default_value__, \
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default_value__, helpstring__, helparg__, false, \
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default_value__, helpstring__, helparg__, false, \
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const char*, const char*, options::parse_string)
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const char*, const char*, options::parse_string)
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DEFINE_bool_alias(dy, Bdynamic, options::ONE_DASH, '\0',
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DEFINE_bool_alias(dy, Bdynamic, options::ONE_DASH, '\0',
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N_("alias for -Bdynamic"), NULL, false);
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N_("alias for -Bdynamic"), NULL, false);
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DEFINE_bool_alias(dn, Bdynamic, options::ONE_DASH, '\0',
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DEFINE_bool_alias(dn, Bdynamic, options::ONE_DASH, '\0',
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N_("alias for -Bstatic"), NULL, true);
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N_("alias for -Bstatic"), NULL, true);
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DEFINE_bool(Bgroup, options::ONE_DASH, '\0', false,
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N_("Use group name lookup rules for shared library"), NULL);
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DEFINE_bool(Bsymbolic, options::ONE_DASH, '\0', false,
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DEFINE_bool(Bsymbolic, options::ONE_DASH, '\0', false,
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N_("Bind defined symbols locally"), NULL);
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N_("Bind defined symbols locally"), NULL);
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DEFINE_bool(Bsymbolic_functions, options::ONE_DASH, '\0', false,
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DEFINE_bool(Bsymbolic_functions, options::ONE_DASH, '\0', false,
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N_("Bind defined function symbols locally"), NULL);
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N_("Bind defined function symbols locally"), NULL);
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DEFINE_bool(cref, options::TWO_DASHES, '\0', false,
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DEFINE_bool(cref, options::TWO_DASHES, '\0', false,
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N_("Output cross reference table"),
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N_("Output cross reference table"),
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N_("Do not output cross reference table"));
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N_("Do not output cross reference table"));
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DEFINE_bool(ctors_in_init_array, options::TWO_DASHES, '\0', true,
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N_("Use DT_INIT_ARRAY for all constructors (default)"),
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N_("Handle constructors as directed by compiler"));
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DEFINE_bool(define_common, options::TWO_DASHES, 'd', false,
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DEFINE_bool(define_common, options::TWO_DASHES, 'd', false,
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N_("Define common symbols"),
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N_("Define common symbols"),
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N_("Do not define common symbols"));
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N_("Do not define common symbols"));
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DEFINE_bool(dc, options::ONE_DASH, '\0', false,
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DEFINE_bool(dc, options::ONE_DASH, '\0', false,
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N_("Alias for -d"), NULL);
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N_("Alias for -d"), NULL);
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N_("Do not export all dynamic symbols (default)"));
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N_("Do not export all dynamic symbols (default)"));
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DEFINE_special(EB, options::ONE_DASH, '\0',
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DEFINE_special(EB, options::ONE_DASH, '\0',
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N_("Link big-endian objects."), NULL);
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N_("Link big-endian objects."), NULL);
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DEFINE_bool(eh_frame_hdr, options::TWO_DASHES, '\0', false,
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N_("Create exception frame header"), NULL);
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DEFINE_special(EL, options::ONE_DASH, '\0',
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DEFINE_special(EL, options::ONE_DASH, '\0',
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N_("Link little-endian objects."), NULL);
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N_("Link little-endian objects."), NULL);
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DEFINE_bool(eh_frame_hdr, options::TWO_DASHES, '\0', false,
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N_("Create exception frame header"), NULL);
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DEFINE_bool(enum_size_warning, options::TWO_DASHES, '\0', true, NULL,
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DEFINE_bool(enum_size_warning, options::TWO_DASHES, '\0', true, NULL,
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N_("(ARM only) Do not warn about objects with incompatible "
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N_("(ARM only) Do not warn about objects with incompatible "
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"enum sizes"));
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"enum sizes"));
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DEFINE_set(auxiliary, options::TWO_DASHES, 'f',
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N_("Auxiliary filter for shared object symbol table"),
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N_("SHLIB"));
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DEFINE_string(filter, options::TWO_DASHES, 'F', NULL,
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N_("Filter for shared object symbol table"),
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N_("SHLIB"));
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DEFINE_bool(fatal_warnings, options::TWO_DASHES, '\0', false,
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DEFINE_bool(fatal_warnings, options::TWO_DASHES, '\0', false,
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N_("Treat warnings as errors"),
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N_("Treat warnings as errors"),
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N_("Do not treat warnings as errors"));
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N_("Do not treat warnings as errors"));
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DEFINE_string(fini, options::ONE_DASH, '\0', "_fini",
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DEFINE_string(fini, options::ONE_DASH, '\0', "_fini",
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N_("Assume files didn't change"), NULL);
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N_("Assume files didn't change"), NULL);
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DEFINE_special(incremental_unknown, options::TWO_DASHES, '\0',
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DEFINE_special(incremental_unknown, options::TWO_DASHES, '\0',
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N_("Use timestamps to check files (default)"), NULL);
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N_("Use timestamps to check files (default)"), NULL);
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DEFINE_special(incremental_startup_unchanged, options::TWO_DASHES, '\0',
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N_("Assume startup files unchanged "
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"(files preceding this option)"), NULL);
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DEFINE_percent(incremental_patch, options::TWO_DASHES, '\0', 10,
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N_("Amount of extra space to allocate for patches"),
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N_("PERCENT"));
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DEFINE_string(init, options::ONE_DASH, '\0', "_init",
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DEFINE_string(init, options::ONE_DASH, '\0', "_init",
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N_("Call SYMBOL at load-time"), N_("SYMBOL"));
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N_("Call SYMBOL at load-time"), N_("SYMBOL"));
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DEFINE_special(just_symbols, options::TWO_DASHES, '\0',
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DEFINE_special(just_symbols, options::TWO_DASHES, '\0',
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N_("Read only symbol values from FILE"), N_("FILE"));
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N_("Read only symbol values from FILE"), N_("FILE"));
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"hosts)"));
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"hosts)"));
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DEFINE_bool(keep_files_mapped, options::TWO_DASHES, '\0', true,
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DEFINE_bool(keep_files_mapped, options::TWO_DASHES, '\0', true,
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N_("Keep files mapped across passes (default)"),
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N_("Keep files mapped across passes (default)"),
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N_("Release mapped files after each pass"));
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N_("Release mapped files after each pass"));
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DEFINE_bool(ld_generated_unwind_info, options::TWO_DASHES, '\0', true,
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N_("Generate unwind information for PLT (default)"),
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N_("Do not generate unwind information for PLT"));
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DEFINE_special(library, options::TWO_DASHES, 'l',
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DEFINE_special(library, options::TWO_DASHES, 'l',
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N_("Search for library LIBNAME"), N_("LIBNAME"));
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N_("Search for library LIBNAME"), N_("LIBNAME"));
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DEFINE_dirlist(library_path, options::TWO_DASHES, 'L',
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DEFINE_dirlist(library_path, options::TWO_DASHES, 'L',
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N_("Add directory to search path"), N_("DIR"));
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N_("Add directory to search path"), N_("DIR"));
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DEFINE_bool(rosegment, options::TWO_DASHES, '\0', false,
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DEFINE_bool(rosegment, options::TWO_DASHES, '\0', false,
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N_(" Put read-only non-executable sections in their own segment"),
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N_(" Put read-only non-executable sections in their own segment"),
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NULL);
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NULL);
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DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "",
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DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "",
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N_("Ignored for compatibility"), N_("EMULATION"));
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N_("Set GNU linker emulation; obsolete"), N_("EMULATION"));
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DEFINE_bool(print_map, options::TWO_DASHES, 'M', false,
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DEFINE_bool(print_map, options::TWO_DASHES, 'M', false,
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N_("Write map file on standard output"), NULL);
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N_("Write map file on standard output"), NULL);
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DEFINE_string(Map, options::ONE_DASH, '\0', NULL, N_("Write map file"),
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DEFINE_string(Map, options::ONE_DASH, '\0', NULL, N_("Write map file"),
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N_("MAPFILENAME"));
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N_("MAPFILENAME"));
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#endif
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#endif
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DEFINE_bool(preread_archive_symbols, options::TWO_DASHES, '\0', false,
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DEFINE_bool(preread_archive_symbols, options::TWO_DASHES, '\0', false,
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N_("Preread archive symbols when multi-threaded"), NULL);
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N_("Preread archive symbols when multi-threaded"), NULL);
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DEFINE_bool(print_output_format, options::TWO_DASHES, '\0', false,
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N_("Print default output format"), NULL);
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DEFINE_string(print_symbol_counts, options::TWO_DASHES, '\0', NULL,
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DEFINE_string(print_symbol_counts, options::TWO_DASHES, '\0', NULL,
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N_("Print symbols defined and used for each input"),
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N_("Print symbols defined and used for each input"),
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N_("FILENAME"));
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N_("FILENAME"));
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DEFINE_bool(Qy, options::EXACTLY_ONE_DASH, '\0', false,
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DEFINE_bool(Qy, options::EXACTLY_ONE_DASH, '\0', false,
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N_("Set the address of the text segment"), N_("ADDRESS"));
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N_("Set the address of the text segment"), N_("ADDRESS"));
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DEFINE_set(undefined, options::TWO_DASHES, 'u',
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DEFINE_set(undefined, options::TWO_DASHES, 'u',
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N_("Create undefined reference to SYMBOL"), N_("SYMBOL"));
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N_("Create undefined reference to SYMBOL"), N_("SYMBOL"));
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DEFINE_enum(unresolved_symbols, options::TWO_DASHES, '\0', NULL,
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N_("How to handle unresolved symbols"),
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("ignore-all,report-all,ignore-in-object-files,"
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"ignore-in-shared-libs"),
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{"ignore-all", "report-all", "ignore-in-object-files",
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"ignore-in-shared-libs"});
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DEFINE_bool(verbose, options::TWO_DASHES, '\0', false,
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DEFINE_bool(verbose, options::TWO_DASHES, '\0', false,
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N_("Synonym for --debug=files"), NULL);
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N_("Synonym for --debug=files"), NULL);
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DEFINE_special(version_script, options::TWO_DASHES, '\0',
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DEFINE_special(version_script, options::TWO_DASHES, '\0',
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N_("Read version script"), N_("FILE"));
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N_("Read version script"), N_("FILE"));
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DEFINE_bool(relro, options::DASH_Z, '\0', false,
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DEFINE_bool(relro, options::DASH_Z, '\0', false,
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N_("Where possible mark variables read-only after relocation"),
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N_("Where possible mark variables read-only after relocation"),
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N_("Don't mark variables read-only after relocation"));
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N_("Don't mark variables read-only after relocation"));
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DEFINE_bool(text, options::DASH_Z, '\0', false,
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DEFINE_bool(text, options::DASH_Z, '\0', false,
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N_("Do not permit relocations in read-only segments"),
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N_("Do not permit relocations in read-only segments"),
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NULL);
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N_("Permit relocations in read-only segments (default)"));
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DEFINE_bool_alias(textoff, text, options::DASH_Z, '\0',
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DEFINE_bool_alias(textoff, text, options::DASH_Z, '\0',
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N_("Permit relocations in read-only segments (default)"),
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N_("Permit relocations in read-only segments (default)"),
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NULL, true);
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NULL, true);
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public:
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public:
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// value may change as we proceed parsing the command line flags.
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// value may change as we proceed parsing the command line flags.
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Incremental_disposition
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Incremental_disposition
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incremental_disposition() const
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incremental_disposition() const
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{ return this->incremental_disposition_; }
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{ return this->incremental_disposition_; }
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// The disposition to use for startup files (those that precede the
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// first --incremental-changed, etc. option).
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Incremental_disposition
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incremental_startup_disposition() const
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{ return this->incremental_startup_disposition_; }
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// Return true if S is the name of a library excluded from automatic
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// Return true if S is the name of a library excluded from automatic
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// symbol export.
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// symbol export.
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bool
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bool
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check_excluded_libs(const std::string &s) const;
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check_excluded_libs(const std::string &s) const;
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Incremental_mode incremental_mode_;
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Incremental_mode incremental_mode_;
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// The disposition given by the --incremental-changed,
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// The disposition given by the --incremental-changed,
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// --incremental-unchanged or --incremental-unknown option. The
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// --incremental-unchanged or --incremental-unknown option. The
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// value may change as we proceed parsing the command line flags.
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// value may change as we proceed parsing the command line flags.
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Incremental_disposition incremental_disposition_;
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Incremental_disposition incremental_disposition_;
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// The disposition to use for startup files (those marked
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// INCREMENTAL_STARTUP).
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Incremental_disposition incremental_startup_disposition_;
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// Whether we have seen one of the options that require incremental
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// Whether we have seen one of the options that require incremental
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// build (--incremental-changed, --incremental-unchanged or
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// build (--incremental-changed, --incremental-unchanged,
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// --incremental-unknown)
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// --incremental-unknown, or --incremental-startup-unchanged).
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bool implicit_incremental_;
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bool implicit_incremental_;
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// Libraries excluded from automatic export, via --exclude-libs.
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// Libraries excluded from automatic export, via --exclude-libs.
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Unordered_set<std::string> excluded_libs_;
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Unordered_set<std::string> excluded_libs_;
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// List of symbol-names to keep, via -retain-symbol-info.
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// List of symbol-names to keep, via -retain-symbol-info.
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Unordered_set<std::string> symbols_to_retain_;
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Unordered_set<std::string> symbols_to_retain_;
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