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+; Options for the C, ObjC, C++ and ObjC++ front ends.
+; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
+; Free Software Foundation, Inc.
+;
+; This file is part of GCC.
+;
+; GCC 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, or (at your option) any later
+; version.
+;
+; GCC 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 GCC; see the file COPYING3.  If not see
+; <http://www.gnu.org/licenses/>.
+
+; See the GCC internals manual for a description of this file's format.
+
+; Please try to keep this file in ASCII collating order.
+
+Language
+C
+
+Language
+ObjC
+
+Language
+C++
+
+Language
+ObjC++
+
+-output-pch=
+C ObjC C++ ObjC++ Joined Separate
+
+A
+C ObjC C++ ObjC++ Joined Separate
+-A<question>=<answer>	Assert the <answer> to <question>.  Putting '-' before <question> disables the <answer> to <question>
+
+C
+C ObjC C++ ObjC++
+Do not discard comments
+
+CC
+C ObjC C++ ObjC++
+Do not discard comments in macro expansions
+
+D
+C ObjC C++ ObjC++ Joined Separate
+-D<macro>[=<val>]	Define a <macro> with <val> as its value.  If just <macro> is given, <val> is taken to be 1
+
+E
+C ObjC C++ ObjC++ Undocumented
+
+F
+C ObjC C++ ObjC++ Joined Separate
+-F <dir>	Add <dir> to the end of the main framework include path
+
+H
+C ObjC C++ ObjC++
+Print the name of header files as they are used
+
+I
+C ObjC C++ ObjC++ Joined Separate
+-I <dir>	Add <dir> to the end of the main include path
+
+M
+C ObjC C++ ObjC++
+Generate make dependencies
+
+MD
+C ObjC C++ ObjC++ Separate
+Generate make dependencies and compile
+
+MF
+C ObjC C++ ObjC++ Joined Separate
+-MF <file>	Write dependency output to the given file
+
+MG
+C ObjC C++ ObjC++
+Treat missing header files as generated files
+
+MM
+C ObjC C++ ObjC++
+Like -M but ignore system header files
+
+MMD
+C ObjC C++ ObjC++ Separate
+Like -MD but ignore system header files
+
+MP
+C ObjC C++ ObjC++
+Generate phony targets for all headers
+
+MQ
+C ObjC C++ ObjC++ Joined Separate
+-MQ <target>	Add a MAKE-quoted target
+
+MT
+C ObjC C++ ObjC++ Joined Separate
+-MT <target>	Add an unquoted target
+
+P
+C ObjC C++ ObjC++
+Do not generate #line directives
+
+U
+C ObjC C++ ObjC++ Joined Separate
+-U<macro>	Undefine <macro>
+
+Wabi
+C ObjC C++ ObjC++ Var(warn_abi) Warning
+Warn about things that will change when compiling with an ABI-compliant compiler
+
+Wpsabi
+C ObjC C++ ObjC++ Var(warn_psabi) Init(1) Undocumented
+
+Waddress
+C ObjC C++ ObjC++ Var(warn_address) Warning
+Warn about suspicious uses of memory addresses
+
+Wall
+C ObjC C++ ObjC++ Warning
+Enable most warning messages
+
+Wassign-intercept
+ObjC ObjC++ Var(warn_assign_intercept) Warning
+Warn whenever an Objective-C assignment is being intercepted by the garbage collector
+
+Wbad-function-cast
+C ObjC Var(warn_bad_function_cast) Warning
+Warn about casting functions to incompatible types
+
+Wbuiltin-macro-redefined
+C ObjC C++ ObjC++ Warning
+Warn when a built-in preprocessor macro is undefined or redefined
+
+Wc++-compat
+C ObjC Var(warn_cxx_compat) Warning
+Warn about C constructs that are not in the common subset of C and C++
+
+Wc++0x-compat
+C++ ObjC++ Var(warn_cxx0x_compat) Warning
+Warn about C++ constructs whose meaning differs between ISO C++ 1998 and ISO C++ 200x
+
+Wcast-qual
+C ObjC C++ ObjC++ Var(warn_cast_qual) Warning
+Warn about casts which discard qualifiers
+
+Wchar-subscripts
+C ObjC C++ ObjC++ Var(warn_char_subscripts) Warning
+Warn about subscripts whose type is \"char\"
+
+Wclobbered
+C ObjC C++ ObjC++ Var(warn_clobbered) Init(-1) Warning
+Warn about variables that might be changed by \"longjmp\" or \"vfork\"
+
+Wcomment
+C ObjC C++ ObjC++ Warning
+Warn about possibly nested block comments, and C++ comments spanning more than one physical line
+
+Wcomments
+C ObjC C++ ObjC++ Warning
+Synonym for -Wcomment
+
+Wconversion
+C ObjC C++ ObjC++ Var(warn_conversion) Warning
+Warn for implicit type conversions that may change a value
+
+Wsign-conversion
+C ObjC C++ ObjC++ Var(warn_sign_conversion) Init(-1)
+Warn for implicit type conversions between signed and unsigned integers
+
+Wctor-dtor-privacy
+C++ ObjC++ Var(warn_ctor_dtor_privacy) Warning
+Warn when all constructors and destructors are private
+
+Wdeclaration-after-statement
+C ObjC Var(warn_declaration_after_statement) Warning
+Warn when a declaration is found after a statement
+
+Wdeprecated
+C C++ ObjC ObjC++ Var(warn_deprecated) Init(1) Warning
+Warn if a deprecated compiler feature, class, method, or field is used
+
+Wdiv-by-zero
+C ObjC C++ ObjC++ Var(warn_div_by_zero) Init(1) Warning
+Warn about compile-time integer division by zero
+
+Weffc++
+C++ ObjC++ Var(warn_ecpp) Warning
+Warn about violations of Effective C++ style rules
+
+Wempty-body
+C ObjC C++ ObjC++ Var(warn_empty_body) Init(-1) Warning
+Warn about an empty body in an if or else statement
+
+Wendif-labels
+C ObjC C++ ObjC++ Warning
+Warn about stray tokens after #elif and #endif
+
+Wenum-compare
+C++ ObjC++ Var(warn_enum_compare) Init(1) Warning
+Warn about comparison of different enum types
+
+Werror
+C ObjC C++ ObjC++
+; Documented in common.opt
+
+Werror-implicit-function-declaration
+C ObjC RejectNegative Warning
+This switch is deprecated; use -Werror=implicit-function-declaration instead
+
+Wfloat-equal
+C ObjC C++ ObjC++ Var(warn_float_equal) Warning
+Warn if testing floating point numbers for equality
+
+Wformat
+C ObjC C++ ObjC++ Warning
+Warn about printf/scanf/strftime/strfmon format string anomalies
+
+Wformat-extra-args
+C ObjC C++ ObjC++ Var(warn_format_extra_args) Warning
+Warn if passing too many arguments to a function for its format string
+
+Wformat-nonliteral
+C ObjC C++ ObjC++ Var(warn_format_nonliteral) Warning
+Warn about format strings that are not literals
+
+Wformat-contains-nul
+C ObjC C++ ObjC++ Var(warn_format_contains_nul) Warning
+Warn about format strings that contain NUL bytes
+
+Wformat-security
+C ObjC C++ ObjC++ Var(warn_format_security) Warning
+Warn about possible security problems with format functions
+
+Wformat-y2k
+C ObjC C++ ObjC++ Var(warn_format_y2k) Warning
+Warn about strftime formats yielding 2-digit years
+
+Wformat-zero-length
+C ObjC Var(warn_format_zero_length) Warning
+Warn about zero-length formats
+
+Wformat=
+C ObjC C++ ObjC++ Joined Warning
+
+Wignored-qualifiers
+C C++ Var(warn_ignored_qualifiers) Init(-1) Warning
+Warn whenever type qualifiers are ignored.
+
+Winit-self
+C ObjC C++ ObjC++ Var(warn_init_self) Warning
+Warn about variables which are initialized to themselves
+
+Wimplicit
+C ObjC C++ ObjC++ Warning
+
+Wimplicit-function-declaration
+C ObjC Var(warn_implicit_function_declaration) Init(-1) Warning
+Warn about implicit function declarations
+
+Wimplicit-int
+C ObjC Var(warn_implicit_int) Warning
+Warn when a declaration does not specify a type
+
+Wimport
+C ObjC C++ ObjC++ Undocumented
+
+Wint-to-pointer-cast
+C ObjC Var(warn_int_to_pointer_cast) Init(1) Warning
+Warn when there is a cast to a pointer from an integer of a different size
+
+Winvalid-offsetof
+C++ ObjC++ Var(warn_invalid_offsetof) Init(1) Warning
+Warn about invalid uses of the \"offsetof\" macro
+
+Winvalid-pch
+C ObjC C++ ObjC++ Warning
+Warn about PCH files that are found but not used
+
+Wlong-long
+C ObjC C++ ObjC++ Var(warn_long_long) Init(1) Warning
+Do not warn about using \"long long\" when -pedantic
+
+Wmain
+C ObjC C++ ObjC++ Var(warn_main) Init(-1) Warning
+Warn about suspicious declarations of \"main\"
+
+Wmissing-braces
+C ObjC C++ ObjC++ Var(warn_missing_braces) Warning
+Warn about possibly missing braces around initializers
+
+Wmissing-declarations
+C ObjC C++ ObjC++ Var(warn_missing_declarations) Warning
+Warn about global functions without previous declarations
+
+Wmissing-field-initializers
+C ObjC C++ ObjC++ Var(warn_missing_field_initializers) Init(-1) Warning
+Warn about missing fields in struct initializers
+
+Wmissing-format-attribute
+C ObjC C++ ObjC++ Var(warn_missing_format_attribute) Warning
+Warn about functions which might be candidates for format attributes
+
+Wmissing-include-dirs
+C ObjC C++ ObjC++ Warning
+Warn about user-specified include directories that do not exist
+
+Wmissing-parameter-type
+C ObjC Var(warn_missing_parameter_type) Init(-1) Warning
+Warn about function parameters declared without a type specifier in K&R-style functions
+
+Wmissing-prototypes
+C ObjC Var(warn_missing_prototypes) Warning
+Warn about global functions without prototypes
+
+Wmultichar
+C ObjC C++ ObjC++ Warning
+Warn about use of multi-character character constants
+
+Wnested-externs
+C ObjC Var(warn_nested_externs) Warning
+Warn about \"extern\" declarations not at file scope
+
+Wnon-template-friend
+C++ ObjC++ Var(warn_nontemplate_friend) Init(1) Warning
+Warn when non-templatized friend functions are declared within a template
+
+Wnon-virtual-dtor
+C++ ObjC++ Var(warn_nonvdtor) Warning
+Warn about non-virtual destructors
+
+Wnonnull
+C ObjC Var(warn_nonnull) Warning
+Warn about NULL being passed to argument slots marked as requiring non-NULL
+
+Wnormalized=
+C ObjC C++ ObjC++ Joined Warning
+-Wnormalized=<id|nfc|nfkc>	Warn about non-normalised Unicode strings
+
+Wold-style-cast
+C++ ObjC++ Var(warn_old_style_cast) Warning
+Warn if a C-style cast is used in a program
+
+Wold-style-declaration
+C ObjC Var(warn_old_style_declaration) Init(-1) Warning
+Warn for obsolescent usage in a declaration
+
+Wold-style-definition
+C ObjC Var(warn_old_style_definition) Warning
+Warn if an old-style parameter definition is used
+
+Woverlength-strings
+C ObjC C++ ObjC++ Var(warn_overlength_strings) Init(-1) Warning
+Warn if a string is longer than the maximum portable length specified by the standard
+
+Woverloaded-virtual
+C++ ObjC++ Var(warn_overloaded_virtual) Warning
+Warn about overloaded virtual function names
+
+Woverride-init
+C ObjC Var(warn_override_init) Init(-1) Warning
+Warn about overriding initializers without side effects
+
+Wpacked-bitfield-compat
+C ObjC C++ ObjC++ Var(warn_packed_bitfield_compat) Init(-1) Warning
+Warn about packed bit-fields whose offset changed in GCC 4.4
+
+Wparentheses
+C ObjC C++ ObjC++ Var(warn_parentheses) Warning
+Warn about possibly missing parentheses
+
+Wpmf-conversions
+C++ ObjC++ Var(warn_pmf2ptr) Init(1) Warning
+Warn when converting the type of pointers to member functions
+
+Wpointer-arith
+C ObjC C++ ObjC++ Var(warn_pointer_arith) Warning
+Warn about function pointer arithmetic
+
+Wpointer-to-int-cast
+C ObjC Var(warn_pointer_to_int_cast) Init(1) Warning
+Warn when a pointer is cast to an integer of a different size
+
+Wpragmas
+C ObjC C++ ObjC++ Var(warn_pragmas) Init(1) Warning
+Warn about misuses of pragmas
+
+Wprotocol
+ObjC ObjC++ Var(warn_protocol) Init(1) Warning
+Warn if inherited methods are unimplemented
+
+Wredundant-decls
+C ObjC C++ ObjC++ Var(warn_redundant_decls) Warning
+Warn about multiple declarations of the same object
+
+Wreorder
+C++ ObjC++ Var(warn_reorder) Warning
+Warn when the compiler reorders code
+
+Wreturn-type
+C ObjC C++ ObjC++ Var(warn_return_type) Warning
+Warn whenever a function's return type defaults to \"int\" (C), or about inconsistent return types (C++)
+
+Wselector
+ObjC ObjC++ Var(warn_selector) Warning
+Warn if a selector has multiple methods
+
+Wsequence-point
+C ObjC C++ ObjC++ Var(warn_sequence_point) Warning
+Warn about possible violations of sequence point rules
+
+Wsign-compare
+C ObjC C++ ObjC++ Var(warn_sign_compare) Init(-1) Warning
+Warn about signed-unsigned comparisons
+
+Wsign-promo
+C++ ObjC++ Var(warn_sign_promo) Warning
+Warn when overload promotes from unsigned to signed
+
+Wstrict-null-sentinel
+C++ ObjC++ Warning
+Warn about uncasted NULL used as sentinel
+
+Wstrict-prototypes
+C ObjC Var(warn_strict_prototypes) Warning
+Warn about unprototyped function declarations
+
+Wstrict-selector-match
+ObjC ObjC++ Var(warn_strict_selector_match) Warning
+Warn if type signatures of candidate methods do not match exactly
+
+Wsync-nand
+C C++ Var(warn_sync_nand) Init(1) Warning
+Warn when __sync_fetch_and_nand and __sync_nand_and_fetch built-in functions are used
+
+Wsynth
+C++ ObjC++ Var(warn_synth) Warning
+Deprecated.  This switch has no effect
+
+Wsystem-headers
+C ObjC C++ ObjC++ Warning
+; Documented in common.opt
+
+Wtraditional
+C ObjC Var(warn_traditional) Warning
+Warn about features not present in traditional C
+
+Wtraditional-conversion
+C ObjC Var(warn_traditional_conversion) Warning
+Warn of prototypes causing type conversions different from what would happen in the absence of prototype
+
+Wtrigraphs
+C ObjC C++ ObjC++ Warning
+Warn if trigraphs are encountered that might affect the meaning of the program
+
+Wundeclared-selector
+ObjC ObjC++ Var(warn_undeclared_selector) Warning
+Warn about @selector()s without previously declared methods
+
+Wundef
+C ObjC C++ ObjC++ Warning
+Warn if an undefined macro is used in an #if directive
+
+Wunknown-pragmas
+C ObjC C++ ObjC++ Warning
+Warn about unrecognized pragmas
+
+Wunused-macros
+C ObjC C++ ObjC++ Warning
+Warn about macros defined in the main file that are not used
+
+Wvariadic-macros
+C ObjC C++ ObjC++ Warning
+Do not warn about using variadic macros when -pedantic
+
+Wvla
+C ObjC C++ ObjC++ Var(warn_vla) Init(-1) Warning
+Warn if a variable length array is used
+
+Wvolatile-register-var
+C ObjC C++ ObjC++ Var(warn_volatile_register_var) Warning
+Warn when a register variable is declared volatile
+
+Wwrite-strings
+C ObjC C++ ObjC++ Var(warn_write_strings) Warning
+In C++, nonzero means warn about deprecated conversion from string literals to `char *'.  In C, similar warning, except that the conversion is of course not deprecated by the ISO C standard.
+
+Wpointer-sign
+C ObjC Var(warn_pointer_sign) Init(-1) Warning
+Warn when a pointer differs in signedness in an assignment
+
+ansi
+C ObjC C++ ObjC++
+A synonym for -std=c89 (for C) or -std=c++98 (for C++)
+
+d
+C ObjC C++ ObjC++ Joined
+; Documented in common.opt.  FIXME - what about -dI, -dD, -dN and -dD?
+
+faccess-control
+C++ ObjC++
+Enforce class member access control semantics
+
+fall-virtual
+C++ ObjC++
+
+falt-external-templates
+C++ ObjC++
+Change when template instances are emitted
+
+fasm
+C ObjC C++ ObjC++
+Recognize the \"asm\" keyword
+
+fbuiltin
+C ObjC C++ ObjC++
+Recognize built-in functions
+
+fbuiltin-
+C ObjC C++ ObjC++ Joined
+
+fcheck-new
+C++ ObjC++
+Check the return value of new
+
+fcond-mismatch
+C ObjC C++ ObjC++
+Allow the arguments of the '?' operator to have different types
+
+fconserve-space
+C++ ObjC++
+Reduce the size of object files
+
+fconstant-string-class=
+ObjC ObjC++ Joined
+-fconst-string-class=<name>	Use class <name> for constant strings
+
+fdeduce-init-list
+C++ ObjC++ Var(flag_deduce_init_list) Init(1)
+-fno-deduce-init-list	disable deduction of std::initializer_list for a template type parameter from a brace-enclosed initializer-list
+
+fdefault-inline
+C++ ObjC++
+Inline member functions by default
+
+fdirectives-only
+C ObjC C++ ObjC++
+Preprocess directives only.
+
+fdollars-in-identifiers
+C ObjC C++ ObjC++
+Permit '$' as an identifier character
+
+felide-constructors
+C++ ObjC++
+
+fenforce-eh-specs
+C++ ObjC++
+Generate code to check exception specifications
+
+fenum-int-equiv
+C++ ObjC++
+
+fexec-charset=
+C ObjC C++ ObjC++ Joined RejectNegative
+-fexec-charset=<cset>	Convert all strings and character constants to character set <cset>
+
+fextended-identifiers
+C ObjC C++ ObjC++
+Permit universal character names (\\u and \\U) in identifiers
+
+finput-charset=
+C ObjC C++ ObjC++ Joined RejectNegative
+-finput-charset=<cset>	Specify the default character set for source files
+
+
+fexternal-templates
+C++ ObjC++
+
+ffor-scope
+C++ ObjC++
+Scope of for-init-statement variables is local to the loop
+
+ffreestanding
+C ObjC C++ ObjC++
+Do not assume that standard C libraries and \"main\" exist
+
+fgnu-keywords
+C++ ObjC++
+Recognize GNU-defined keywords
+
+fgnu-runtime
+ObjC ObjC++
+Generate code for GNU runtime environment
+
+fgnu89-inline
+C ObjC Var(flag_gnu89_inline) Init(-1)
+Use traditional GNU semantics for inline functions
+
+fguiding-decls
+C++ ObjC++
+
+fhandle-exceptions
+C++ ObjC++ Optimization
+
+fhonor-std
+C++ ObjC++
+
+fhosted
+C ObjC
+Assume normal C execution environment
+
+fhuge-objects
+C++ ObjC++
+Enable support for huge objects
+
+fimplement-inlines
+C++ ObjC++
+Export functions even if they can be inlined
+
+fimplicit-inline-templates
+C++ ObjC++
+Emit implicit instantiations of inline templates
+
+fimplicit-templates
+C++ ObjC++
+Emit implicit instantiations of templates
+
+ffriend-injection
+C++ ObjC++ Var(flag_friend_injection)
+Inject friend functions into enclosing namespace
+
+flabels-ok
+C++ ObjC++
+
+flax-vector-conversions
+C ObjC C++ ObjC++
+Allow implicit conversions between vectors with differing numbers of subparts and/or differing element types.
+
+fms-extensions
+C ObjC C++ ObjC++
+Don't warn about uses of Microsoft extensions
+
+fname-mangling-version-
+C++ ObjC++ Joined
+
+fnew-abi
+C++ ObjC++
+
+fnext-runtime
+ObjC ObjC++
+Generate code for NeXT (Apple Mac OS X) runtime environment
+
+fnil-receivers
+ObjC ObjC++
+Assume that receivers of Objective-C messages may be nil
+
+fnonansi-builtins
+C++ ObjC++
+
+fnonnull-objects
+C++ ObjC++
+
+; Generate special '- .cxx_construct' and '- .cxx_destruct' methods
+; to initialize any non-POD ivars in Objective-C++ classes.
+fobjc-call-cxx-cdtors
+ObjC++ Var(flag_objc_call_cxx_cdtors)
+Generate special Objective-C methods to initialize/destroy non-POD C++ ivars, if needed
+
+fobjc-direct-dispatch
+ObjC ObjC++ Var(flag_objc_direct_dispatch)
+Allow fast jumps to the message dispatcher
+
+; Nonzero means that we will allow new ObjC exception syntax (@throw,
+; @try, etc.) in source code.
+fobjc-exceptions
+ObjC ObjC++ Var(flag_objc_exceptions)
+Enable Objective-C exception and synchronization syntax
+
+fobjc-gc
+ObjC ObjC++ Var(flag_objc_gc)
+Enable garbage collection (GC) in Objective-C/Objective-C++ programs
+
+; Nonzero means that we generate NeXT setjmp based exceptions.
+fobjc-sjlj-exceptions
+ObjC ObjC++ Var(flag_objc_sjlj_exceptions) Init(-1)
+Enable Objective-C setjmp exception handling runtime
+
+fopenmp
+C ObjC C++ ObjC++ Var(flag_openmp)
+Enable OpenMP (implies -frecursive in Fortran)
+
+foperator-names
+C++ ObjC++
+Recognize C++ keywords like \"compl\" and \"xor\"
+
+foptional-diags
+C++ ObjC++
+Enable optional diagnostics
+
+fpch-deps
+C ObjC C++ ObjC++
+
+fpch-preprocess
+C ObjC C++ ObjC++
+Look for and use PCH files even when preprocessing
+
+fpermissive
+C++ ObjC++
+Downgrade conformance errors to warnings
+
+fpreprocessed
+C ObjC C++ ObjC++
+Treat the input file as already preprocessed
+
+freplace-objc-classes
+ObjC ObjC++
+Used in Fix-and-Continue mode to indicate that object files may be swapped in at runtime
+
+frepo
+C++ ObjC++
+Enable automatic template instantiation
+
+frtti
+C++ ObjC++ Optimization
+Generate run time type descriptor information
+
+fshort-double
+C ObjC C++ ObjC++ Optimization
+Use the same size for double as for float
+
+fshort-enums
+C ObjC C++ ObjC++ Optimization
+Use the narrowest integer type possible for enumeration types
+
+fshort-wchar
+C ObjC C++ ObjC++ Optimization
+Force the underlying type for \"wchar_t\" to be \"unsigned short\"
+
+fsigned-bitfields
+C ObjC C++ ObjC++
+When \"signed\" or \"unsigned\" is not given make the bitfield signed
+
+fsigned-char
+C ObjC C++ ObjC++
+Make \"char\" signed by default
+
+fsquangle
+C++ ObjC++
+
+fstats
+C++ ObjC++
+Display statistics accumulated during compilation
+
+fstrict-prototype
+C++ ObjC++
+
+ftabstop=
+C ObjC C++ ObjC++ Joined RejectNegative UInteger
+-ftabstop=<number>	Distance between tab stops for column reporting
+
+ftemplate-depth-
+C++ ObjC++ Joined RejectNegative UInteger
+-ftemplate-depth-<number>	Specify maximum template instantiation depth
+
+fthis-is-variable
+C++ ObjC++
+
+fthreadsafe-statics
+C++ ObjC++ Optimization
+-fno-threadsafe-statics	Do not generate thread-safe code for initializing local statics
+
+funsigned-bitfields
+C ObjC C++ ObjC++
+When \"signed\" or \"unsigned\" is not given make the bitfield unsigned
+
+funsigned-char
+C ObjC C++ ObjC++
+Make \"char\" unsigned by default
+
+fuse-cxa-atexit
+C++ ObjC++
+Use __cxa_atexit to register destructors
+
+fuse-cxa-get-exception-ptr
+C++ ObjC++
+Use __cxa_get_exception_ptr in exception handling
+
+fvisibility-inlines-hidden
+C++ ObjC++
+Marks all inlined methods as having hidden visibility
+
+fvisibility-ms-compat
+C++ ObjC++ Var(flag_visibility_ms_compat)
+Changes visibility to match Microsoft Visual Studio by default
+
+fvtable-gc
+C++ ObjC++
+Discard unused virtual functions
+
+fvtable-thunks
+C++ ObjC++
+Implement vtables using thunks
+
+fweak
+C++ ObjC++
+Emit common-like symbols as weak symbols
+
+fwide-exec-charset=
+C ObjC C++ ObjC++ Joined RejectNegative
+-fwide-exec-charset=<cset>	Convert all wide strings and character constants to character set <cset>
+
+fworking-directory
+C ObjC C++ ObjC++
+Generate a #line directive pointing at the current working directory
+
+fxref
+C++ ObjC++
+Emit cross referencing information
+
+fzero-link
+ObjC ObjC++
+Generate lazy class lookup (via objc_getClass()) for use in Zero-Link mode
+
+gen-decls
+ObjC ObjC++
+Dump declarations to a .decl file
+
+femit-struct-debug-baseonly
+C ObjC C++ ObjC++
+-femit-struct-debug-baseonly	Aggressive reduced debug info for structs
+
+femit-struct-debug-reduced
+C ObjC C++ ObjC++
+-femit-struct-debug-reduced	Conservative reduced debug info for structs
+
+femit-struct-debug-detailed=
+C ObjC C++ ObjC++ Joined
+-femit-struct-debug-detailed=<spec-list>	Detailed reduced debug info for structs
+
+idirafter
+C ObjC C++ ObjC++ Joined Separate
+-idirafter <dir>	Add <dir> to the end of the system include path
+
+imacros
+C ObjC C++ ObjC++ Joined Separate
+-imacros <file>	Accept definition of macros in <file>
+
+imultilib
+C ObjC C++ ObjC++ Joined Separate
+-imultilib <dir> Set <dir> to be the multilib include subdirectory
+
+include
+C ObjC C++ ObjC++ Joined Separate
+-include <file>	Include the contents of <file> before other files
+
+iprefix
+C ObjC C++ ObjC++ Joined Separate
+-iprefix <path>	Specify <path> as a prefix for next two options
+
+isysroot
+C ObjC C++ ObjC++ Joined Separate
+-isysroot <dir>	Set <dir> to be the system root directory
+
+isystem
+C ObjC C++ ObjC++ Joined Separate
+-isystem <dir>	Add <dir> to the start of the system include path
+
+iquote
+C ObjC C++ ObjC++ Joined Separate
+-iquote <dir>	Add <dir> to the end of the quote include path
+
+iwithprefix
+C ObjC C++ ObjC++ Joined Separate
+-iwithprefix <dir>	Add <dir> to the end of the system include path
+
+iwithprefixbefore
+C ObjC C++ ObjC++ Joined Separate
+-iwithprefixbefore <dir>	Add <dir> to the end of the main include path
+
+lang-asm
+C Undocumented
+
+lang-objc
+C ObjC C++ ObjC++ Undocumented
+
+nostdinc
+C ObjC C++ ObjC++
+Do not search standard system include directories (those specified with -isystem will still be used)
+
+nostdinc++
+C++ ObjC++
+Do not search standard system include directories for C++
+
+o
+C ObjC C++ ObjC++ Joined Separate
+; Documented in common.opt
+
+pedantic
+C ObjC C++ ObjC++
+; Documented in common.opt
+
+pedantic-errors
+C ObjC C++ ObjC++
+; Documented in common.opt
+
+print-objc-runtime-info
+ObjC ObjC++
+Generate C header of platform-specific features
+
+print-pch-checksum
+C ObjC C++ ObjC++
+Print a checksum of the executable for PCH validity checking, and stop
+
+remap
+C ObjC C++ ObjC++
+Remap file names when including files
+
+std=c++98
+C++ ObjC++
+Conform to the ISO 1998 C++ standard
+
+std=c++0x
+C++ ObjC++
+Conform to the ISO 1998 C++ standard, with extensions that are likely to
+become a part of the upcoming ISO C++ standard, dubbed C++0x. Note that the
+extensions enabled by this mode are experimental and may be removed in
+future releases of GCC.
+
+std=c89
+C ObjC
+Conform to the ISO 1990 C standard
+
+std=c99
+C ObjC
+Conform to the ISO 1999 C standard
+
+std=c9x
+C ObjC
+Deprecated in favor of -std=c99
+
+std=gnu++98
+C++ ObjC++
+Conform to the ISO 1998 C++ standard with GNU extensions
+
+std=gnu++0x
+C++ ObjC++
+Conform to the ISO 1998 C++ standard, with GNU extensions and
+extensions that are likely to become a part of the upcoming ISO C++
+standard, dubbed C++0x. Note that the extensions enabled by this mode
+are experimental and may be removed in future releases of GCC.
+
+std=gnu89
+C ObjC
+Conform to the ISO 1990 C standard with GNU extensions
+
+std=gnu99
+C ObjC
+Conform to the ISO 1999 C standard with GNU extensions
+
+std=gnu9x
+C ObjC
+Deprecated in favor of -std=gnu99
+
+std=iso9899:1990
+C ObjC
+Conform to the ISO 1990 C standard
+
+std=iso9899:199409
+C ObjC
+Conform to the ISO 1990 C standard as amended in 1994
+
+std=iso9899:1999
+C ObjC
+Conform to the ISO 1999 C standard
+
+std=iso9899:199x
+C ObjC
+Deprecated in favor of -std=iso9899:1999
+
+traditional-cpp
+C ObjC C++ ObjC++
+Enable traditional preprocessing
+
+trigraphs
+C ObjC C++ ObjC++
+-trigraphs	Support ISO C trigraphs
+
+undef
+C ObjC C++ ObjC++
+Do not predefine system-specific and GCC-specific macros
+
+v
+Common C ObjC C++ ObjC++
+Enable verbose output
+
+w
+C ObjC C++ ObjC++
+; Documented in common.opt
+
+; This comment is to ensure we retain the blank line above.