; Options for the C, ObjC, C++ and ObjC++ front ends.
-; Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+; 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 2, or (at your option) any later
+; 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
; for more details.
;
; You should have received a copy of the GNU General Public License
-; along with GCC; see the file COPYING. If not, write to the Free
-; Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-; 02110-1301, USA.
+; 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.
-U<macro> Undefine <macro>
Wabi
-C++ ObjC++ Var(warn_abi) Warning
+C ObjC C++ ObjC++ LTO Var(warn_abi) Warning
Warn about things that will change when compiling with an ABI-compliant compiler
+Wpsabi
+C ObjC C++ ObjC++ LTO Var(warn_psabi) Init(1) Undocumented
+
Waddress
C ObjC C++ ObjC++ Var(warn_address) Warning
Warn about suspicious uses of memory addresses
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 Var(warn_cxx_compat) Warning
+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 C++ ObjC++ Var(warn_conversion) Warning
Warn for implicit type conversions that may change a value
+Wconversion-null
+C++ ObjC++ Var(warn_conversion_null) Init(1) Warning
+Warn for converting NULL from/to a non-pointer type
+
+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
Warn when a declaration is found after a statement
Wdeprecated
-C++ ObjC++ Var(warn_deprecated) Init(1) Warning
-Warn about deprecated compiler features
+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++ Var(warn_div_by_zero) Init(1) Warning
+C ObjC C++ ObjC++ Var(warn_div_by_zero) Init(1) Warning
Warn about compile-time integer division by zero
Weffc++
C ObjC C++ ObjC++ Warning
Warn about stray tokens after #elif and #endif
+Wenum-compare
+C ObjC 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
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=
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
+C ObjC Var(warn_implicit) Init(-1) Warning
+Warn about implicit declarations
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
+C ObjC Var(warn_implicit_int) Init(-1) Warning
Warn when a declaration does not specify a type
Wimport
-C ObjC C++ ObjC++
-Deprecated. This switch has no effect
+C ObjC C++ ObjC++ Undocumented
Wint-to-pointer-cast
-C ObjC Var(warn_int_to_pointer_cast) Init(1) Warning
+C ObjC 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 C++ ObjC++ Warning
Warn about PCH files that are found but not used
+Wjump-misses-init
+C ObjC Var(warn_jump_misses_init) Init(-1) Warning
+Warn when a jump misses a variable initialization
+
+Wlogical-op
+C ObjC C++ ObjC++ Var(warn_logical_op) Init(0) Warning
+Warn when a logical operator is suspiciously always evaluating to true or false
+
Wlong-long
-C ObjC C++ ObjC++ Var(warn_long_long) Init(1) Warning
+C ObjC C++ ObjC++ Var(warn_long_long) Init(-1) Warning
Do not warn about using \"long long\" when -pedantic
Wmain
-C ObjC Warning
+C ObjC C++ ObjC++ Var(warn_main) Init(-1) Warning
Warn about suspicious declarations of \"main\"
Wmissing-braces
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
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
-Warn when synthesis behavior differs from Cfront
+Deprecated. This switch has no effect
Wsystem-headers
C ObjC C++ ObjC++ Warning
-Do not suppress warnings from system headers
+; Documented in common.opt
Wtraditional
C ObjC Var(warn_traditional) Warning
C ObjC C++ ObjC++ Warning
Warn about unrecognized pragmas
+Wunsuffixed-float-constants
+C ObjC Var(warn_unsuffixed_float_constants) Warning
+Warn about unsuffixed float constants
+
Wunused-macros
C ObjC C++ ObjC++ Warning
Warn about macros defined in the main file that are not used
+Wunused-result
+C ObjC C++ ObjC++ Var(warn_unused_result) Init(1) Warning
+Warn if a caller of a function, marked with attribute warn_unused_result, does not use its return value
+
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.
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
Scope of for-init-statement variables is local to the loop
ffreestanding
-C ObjC
+C ObjC C++ ObjC++
Do not assume that standard C libraries and \"main\" exist
fgnu-keywords
Generate code for GNU runtime environment
fgnu89-inline
-C Var(flag_gnu89_inline) Init(-1)
+C ObjC Var(flag_gnu89_inline) Init(-1)
Use traditional GNU semantics for inline functions
fguiding-decls
Emit implicit instantiations of templates
ffriend-injection
-C++ Var(flag_friend_injection)
+C++ ObjC++ Var(flag_friend_injection)
Inject friend functions into enclosing namespace
flabels-ok
fnonnull-objects
C++ ObjC++
+fnothrow-opt
+C++ ObjC++ Optimization Var(flag_nothrow_opt)
+Treat a throw() exception specification as noexcept to improve code size
+
; Generate special '- .cxx_construct' and '- .cxx_destruct' methods
; to initialize any non-POD ivars in Objective-C++ classes.
fobjc-call-cxx-cdtors
fopenmp
C ObjC C++ ObjC++ Var(flag_openmp)
-Enable OpenMP
+Enable OpenMP (implies -frecursive in Fortran)
foperator-names
C++ ObjC++
-Recognize C++ kewords like \"compl\" and \"xor\"
+Recognize C++ keywords like \"compl\" and \"xor\"
foptional-diags
C++ ObjC++
C ObjC C++ ObjC++
Treat the input file as already preprocessed
+fpretty-templates
+C++ ObjC++
+-fno-pretty-templates Do not pretty-print template specializations as the template signature followed by the arguments
+
freplace-objc-classes
ObjC ObjC++
Used in Fix-and-Continue mode to indicate that object files may be swapped in at runtime
When \"signed\" or \"unsigned\" is not given make the bitfield signed
fsigned-char
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ LTO
Make \"char\" signed by default
fsquangle
C++ ObjC++
Display statistics accumulated during compilation
+fstrict-enums
+C++ ObjC++ Optimization Var(flag_strict_enums)
+Assume that values of enumeration type are always within the minimum range of that type
+
fstrict-prototype
C++ ObjC++
-ftabstop=<number> Distance between tab stops for column reporting
ftemplate-depth-
+C++ ObjC++ Joined RejectNegative UInteger Undocumented
+
+ftemplate-depth=
C++ ObjC++ Joined RejectNegative UInteger
--ftemplate-depth-<number> Specify maximum template instantiation depth
+-ftemplate-depth=<number> Specify maximum template instantiation depth
fthis-is-variable
C++ ObjC++
When \"signed\" or \"unsigned\" is not given make the bitfield unsigned
funsigned-char
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ LTO
Make \"char\" unsigned by default
fuse-cxa-atexit
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
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
imultilib
C ObjC C++ ObjC++ Joined Separate
--imultilib <dir> Set <dir> to be the multilib include subdirectory
+-imultilib <dir> Set <dir> to be the multilib include subdirectory
include
C ObjC C++ ObjC++ Joined Separate
lang-asm
C Undocumented
-lang-fortran
-C Undocumented
-
lang-objc
C ObjC C++ ObjC++ Undocumented
extensions enabled by this mode are experimental and may be removed in
future releases of GCC.
+std=c1x
+C ObjC
+Conform to the ISO 201X C standard draft (experimental and incomplete support)
+
std=c89
C ObjC
Conform to the ISO 1990 C standard
+std=c90
+C ObjC
+Conform to the ISO 1990 C standard
+
std=c99
C ObjC
Conform to the ISO 1999 C standard
standard, dubbed C++0x. Note that the extensions enabled by this mode
are experimental and may be removed in future releases of GCC.
+std=gnu1x
+C ObjC
+Conform to the ISO 201X C standard draft with GNU extensions (experimental and incomplete support)
+
std=gnu89
C ObjC
Conform to the ISO 1990 C standard with GNU extensions
+std=gnu90
+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
Do not predefine system-specific and GCC-specific macros
v
-C ObjC C++ ObjC++
+Common C ObjC C++ ObjC++
Enable verbose output
w
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