; Options for the C, ObjC, C++ and ObjC++ front ends.
-; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
-; 2011 Free Software Foundation, Inc.
+; Copyright (C) 2003-2014 Free Software Foundation, Inc.
;
; This file is part of GCC.
;
-pedantic
C ObjC C++ ObjC++ Alias(pedantic)
--pedantic-errors
-C ObjC C++ ObjC++ Alias(pedantic-errors)
-
-preprocess
C ObjC C++ ObjC++ Undocumented Alias(E)
C ObjC C++ ObjC++ Undocumented Var(flag_preprocess_only)
F
-C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs)
+Driver C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs)
-F <dir> Add <dir> to the end of the main framework include path
H
C ObjC C++ ObjC++ LTO Var(warn_abi) Warning
Warn about things that will change when compiling with an ABI-compliant compiler
+Wabi-tag
+C++ ObjC++ Var(warn_abi_tag) Warning
+Warn if a subobject has an abi_tag attribute that the complete object type does not have
+
Wpsabi
C ObjC C++ ObjC++ LTO Var(warn_psabi) Init(1) Undocumented
Waddress
-C ObjC C++ ObjC++ Var(warn_address) Warning
+C ObjC C++ ObjC++ Var(warn_address) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall)
Warn about suspicious uses of memory addresses
Wall
C ObjC C++ ObjC++ Warning
Enable most warning messages
+Warray-bounds
+LangEnabledBy(C ObjC C++ ObjC++,Wall)
+; in common.opt
+
Wassign-intercept
ObjC ObjC++ Var(warn_assign_intercept) Warning
Warn whenever an Objective-C assignment is being intercepted by the garbage collector
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
+C++ ObjC++ Var(warn_cxx0x_compat) Warning LangEnabledBy(C++ ObjC++,Wall)
+Deprecated in favor of -Wc++11-compat
+
+Wc++11-compat
+C++ ObjC++ Warning Alias(Wc++0x-compat)
+Warn about C++ constructs whose meaning differs between ISO C++ 1998 and ISO C++ 2011
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
+C ObjC C++ ObjC++ Var(warn_char_subscripts) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall)
Warn about subscripts whose type is \"char\"
Wclobbered
-C ObjC C++ ObjC++ Var(warn_clobbered) Init(-1) Warning
+C ObjC C++ ObjC++ Var(warn_clobbered) Warning EnabledBy(Wextra)
Warn about variables that might be changed by \"longjmp\" or \"vfork\"
Wcomment
C ObjC C++ ObjC++ Warning Alias(Wcomment)
Synonym for -Wcomment
+Wconditionally-supported
+C++ ObjC++ Var(warn_conditionally_supported) Warning
+Warn for conditionally-supported constructs
+
Wconversion
C ObjC C++ ObjC++ Var(warn_conversion) Warning
Warn for implicit type conversions that may change a value
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
C ObjC Var(warn_declaration_after_statement) Warning
Warn when a declaration is found after a statement
+Wdelete-incomplete
+C++ ObjC++ Var(warn_delete_incomplete) Init(1) Warning
+Warn when deleting a pointer to incomplete type
+
+Wdelete-non-virtual-dtor
+C++ ObjC++ Var(warn_delnonvdtor) Warning LangEnabledBy(C++ ObjC++,Wall)
+Warn about deleting polymorphic objects with non-virtual destructors
+
+Wdelete-non-virtual-dtor
+LangEnabledBy(C++ ObjC++,Weffc++)
+;
+
Wdeprecated
C C++ ObjC ObjC++ Var(warn_deprecated) Init(1) Warning
Warn if a deprecated compiler feature, class, method, or field is used
Warn about violations of Effective C++ style rules
Wempty-body
-C ObjC C++ ObjC++ Var(warn_empty_body) Init(-1) Warning
+C ObjC C++ ObjC++ Var(warn_empty_body) Warning EnabledBy(Wextra)
Warn about an empty body in an if or else statement
Wendif-labels
Warn about stray tokens after #elif and #endif
Wenum-compare
-C ObjC C++ ObjC++ Var(warn_enum_compare) Init(-1) Warning
+C ObjC C++ ObjC++ Var(warn_enum_compare) Init(-1) Warning LangEnabledBy(C ObjC,Wall)
Warn about comparison of different enum types
+Wenum-compare
+LangEnabledBy(C ObjC,Wc++-compat)
+;
+
Werror
C ObjC C++ ObjC++
; Documented in common.opt
C ObjC RejectNegative Warning Alias(Werror=, implicit-function-declaration)
This switch is deprecated; use -Werror=implicit-function-declaration instead
+Wfloat-conversion
+C ObjC C++ ObjC++ Var(warn_float_conversion) LangEnabledBy(C ObjC C++ ObjC++,Wconversion)
+Warn for implicit type conversions that cause loss of floating point precision
+
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
+C ObjC C++ ObjC++ Warning Alias(Wformat=, 1, 0)
Warn about printf/scanf/strftime/strfmon format string anomalies
+Wformat-contains-nul
+C ObjC C++ ObjC++ Var(warn_format_contains_nul) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 1, 0)
+Warn about format strings that contain NUL bytes
+
Wformat-extra-args
-C ObjC C++ ObjC++ Var(warn_format_extra_args) Warning
+C ObjC C++ ObjC++ Var(warn_format_extra_args) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 1, 0)
Warn if passing too many arguments to a function for its format string
Wformat-nonliteral
-C ObjC C++ ObjC++ Var(warn_format_nonliteral) Warning
+C ObjC C++ ObjC++ Var(warn_format_nonliteral) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 2, 0)
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
+C ObjC C++ ObjC++ Var(warn_format_security) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=, warn_format >= 2, 0)
Warn about possible security problems with format functions
Wformat-y2k
-C ObjC C++ ObjC++ Var(warn_format_y2k) Warning
+C ObjC C++ ObjC++ Var(warn_format_y2k) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=,warn_format >= 2, 0)
Warn about strftime formats yielding 2-digit years
Wformat-zero-length
-C ObjC Var(warn_format_zero_length) Warning
+C ObjC C++ ObjC++ Var(warn_format_zero_length) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=,warn_format >= 1, 0)
Warn about zero-length formats
Wformat=
-C ObjC C++ ObjC++ Joined Warning
+C ObjC C++ ObjC++ Joined RejectNegative UInteger Var(warn_format) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall, 1, 0)
+Warn about printf/scanf/strftime/strfmon format string anomalies
Wignored-qualifiers
-C C++ Var(warn_ignored_qualifiers) Init(-1) Warning
+C C++ Var(warn_ignored_qualifiers) Warning EnabledBy(Wextra)
Warn whenever type qualifiers are ignored.
Winit-self
-C ObjC C++ ObjC++ Var(warn_init_self) Warning
+C ObjC C++ ObjC++ Var(warn_init_self) Warning LangEnabledBy(C++ ObjC++,Wall)
Warn about variables which are initialized to themselves
Wimplicit
-C ObjC Var(warn_implicit) Init(-1) Warning
+C ObjC Var(warn_implicit) Warning LangEnabledBy(C ObjC,Wall)
Warn about implicit declarations
Wdouble-promotion
Warn about implicit conversions from \"float\" to \"double\"
Wimplicit-function-declaration
-C ObjC Var(warn_implicit_function_declaration) Init(-1) Warning
+C ObjC Var(warn_implicit_function_declaration) Init(-1) Warning LangEnabledBy(C ObjC,Wimplicit)
Warn about implicit function declarations
Wimplicit-int
-C ObjC Var(warn_implicit_int) Init(-1) Warning
+C ObjC Var(warn_implicit_int) Warning LangEnabledBy(C ObjC,Wimplicit)
Warn when a declaration does not specify a type
Wimport
C ObjC C++ ObjC++ Undocumented Ignore
+Winherited-variadic-ctor
+C++ ObjC++ Var(warn_inh_var_ctor) Init(1) Warning
+Warn about C++11 inheriting constructors when the base has a variadic constructor
+
Wint-to-pointer-cast
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
Warn about PCH files that are found but not used
Wjump-misses-init
-C ObjC Var(warn_jump_misses_init) Init(-1) Warning
+C ObjC Var(warn_jump_misses_init) Warning LangEnabledby(C ObjC,Wc++-compat)
Warn when a jump misses a variable initialization
+Wliteral-suffix
+C++ ObjC++ Warning
+Warn when a string or character literal is followed by a ud-suffix which does not begin with an underscore.
+
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
Do not warn about using \"long long\" when -pedantic
Wmain
-C ObjC C++ ObjC++ Var(warn_main) Init(-1) Warning
+C ObjC C++ ObjC++ Var(warn_main) Init(-1) Warning LangEnabledBy(C ObjC,Wall, 2, 0)
Warn about suspicious declarations of \"main\"
+Wmain
+LangEnabledBy(C ObjC C++ ObjC++,Wpedantic, 2, 0)
+;
+
Wmissing-braces
-C ObjC C++ ObjC++ Var(warn_missing_braces) Warning
+C ObjC C++ ObjC++ Var(warn_missing_braces) Warning LangEnabledBy(C ObjC,Wall)
Warn about possibly missing braces around initializers
Wmissing-declarations
Warn about global functions without previous declarations
Wmissing-field-initializers
-C ObjC C++ ObjC++ Var(warn_missing_field_initializers) Init(-1) Warning
+C ObjC C++ ObjC++ Var(warn_missing_field_initializers) Warning EnabledBy(Wextra)
Warn about missing fields in struct initializers
-Wmissing-format-attribute
-C ObjC C++ ObjC++ Var(warn_missing_format_attribute) Warning
+Wsizeof-pointer-memaccess
+C ObjC C++ ObjC++ Var(warn_sizeof_pointer_memaccess) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall)
+
+Wsuggest-attribute=format
+C ObjC C++ ObjC++ Var(warn_suggest_attribute_format) Warning
Warn about functions which might be candidates for format attributes
+Wswitch
+C ObjC C++ ObjC++ Var(warn_switch) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall)
+Warn about enumerated switches, with no default, missing a case
+
+Wswitch-default
+C ObjC C++ ObjC++ Var(warn_switch_default) Warning
+Warn about enumerated switches missing a \"default:\" statement
+
+Wswitch-enum
+C ObjC C++ ObjC++ Var(warn_switch_enum) Warning
+Warn about all enumerated switches missing a specific case
+
+Wmissing-format-attribute
+C ObjC C++ ObjC++ Alias(Wsuggest-attribute=format)
+;
+
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
+C ObjC Var(warn_missing_parameter_type) Warning EnabledBy(Wextra)
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
+Wmudflap
+C ObjC C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
+
Wmultichar
C ObjC C++ ObjC++ Warning
Warn about use of multi-character character constants
+Wnarrowing
+C ObjC C++ ObjC++ Warning Var(warn_narrowing) Init(-1) LangEnabledBy(C++ ObjC++,Wall)
+Warn about narrowing conversions within { } that are ill-formed in C++11
+
+Wnarrowing
+C ObjC C++ ObjC++ LangEnabledBy(C++ ObjC++,Wc++0x-compat)
+;
+
Wnested-externs
C ObjC Var(warn_nested_externs) Warning
Warn about \"extern\" declarations not at file scope
Warn about non-virtual destructors
Wnonnull
-C ObjC Var(warn_nonnull) Warning
+C ObjC C++ ObjC++ Var(warn_nonnull) Warning LangEnabledBy(C ObjC C++ ObjC++,Wformat=,warn_format >= 1,0)
Warn about NULL being passed to argument slots marked as requiring non-NULL
+Wnonnull
+C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall)
+;
+
Wnormalized=
C ObjC C++ ObjC++ Joined Warning
-Wnormalized=<id|nfc|nfkc> Warn about non-normalised Unicode strings
Warn if a C-style cast is used in a program
Wold-style-declaration
-C ObjC Var(warn_old_style_declaration) Init(-1) Warning
+C ObjC Var(warn_old_style_declaration) Warning EnabledBy(Wextra)
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
+Wopenmp-simd
+C C++ Var(warn_openmp_simd) Warning LangEnabledBy(C C++,Wall)
+Warn if a simd directive is overridden by the vectorizer cost model
+
Woverlength-strings
-C ObjC C++ ObjC++ Var(warn_overlength_strings) Init(-1) Warning
+C ObjC C++ ObjC++ Var(warn_overlength_strings) Warning LangEnabledBy(C ObjC C++ ObjC++,Wpedantic)
Warn if a string is longer than the maximum portable length specified by the standard
Woverloaded-virtual
Warn about overloaded virtual function names
Woverride-init
-C ObjC Var(warn_override_init) Init(-1) Warning
+C ObjC Var(warn_override_init) Warning EnabledBy(Wextra)
Warn about overriding initializers without side effects
Wpacked-bitfield-compat
Warn about packed bit-fields whose offset changed in GCC 4.4
Wparentheses
-C ObjC C++ ObjC++ Var(warn_parentheses) Warning
+C ObjC C++ ObjC++ Var(warn_parentheses) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall)
Warn about possibly missing parentheses
+Wpedantic
+C ObjC C++ ObjC++ Warning
+; Documented in common.opt
+
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
+C ObjC C++ ObjC++ Var(warn_pointer_arith) Warning LangEnabledBy(C ObjC C++ ObjC++,Wpedantic)
Warn about function pointer arithmetic
+Wpointer-sign
+C ObjC Var(warn_pointer_sign) Warning LangEnabledBy(C ObjC,Wall)
+Warn when a pointer differs in signedness in an assignment
+
+Wpointer-sign
+C ObjC LangEnabledBy(C ObjC,Wpedantic)
+;
+
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
C ObjC C++ ObjC++ Var(warn_pragmas) Init(1) Warning
Warn about misuses of pragmas
+Wdate-time
+Common Var(cpp_warn_date_time) Warning
+Warn about __TIME__, __DATE__ and __TIMESTAMP__ usage
+
Wproperty-assign-default
ObjC ObjC++ Var(warn_property_assign_default) Init(1) Warning
Warn if a property for an Objective-C object has no assign semantics specified
Warn about multiple declarations of the same object
Wreorder
-C++ ObjC++ Var(warn_reorder) Warning
+C++ ObjC++ Var(warn_reorder) Warning LangEnabledBy(C++ ObjC++,Wall)
Warn when the compiler reorders code
+Wreturn-local-addr
+C ObjC C++ ObjC++ Var(warn_return_local_addr) Init(1) Warning
+Warn about returning a pointer/reference to a local or temporary variable.
+
Wreturn-type
-C ObjC C++ ObjC++ Var(warn_return_type) Warning
+C ObjC C++ ObjC++ Var(warn_return_type) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall)
Warn whenever a function's return type defaults to \"int\" (C), or about inconsistent return types (C++)
Wselector
Warn if a selector has multiple methods
Wsequence-point
-C ObjC C++ ObjC++ Var(warn_sequence_point) Warning
+C ObjC C++ ObjC++ Var(warn_sequence_point) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall)
Warn about possible violations of sequence point rules
Wsign-compare
-C ObjC C++ ObjC++ Var(warn_sign_compare) Init(-1) Warning
+C ObjC C++ ObjC++ Var(warn_sign_compare) Warning LangEnabledBy(C++ ObjC++,Wall)
Warn about signed-unsigned comparisons
+Wsign-compare
+C ObjC C++ ObjC++ EnabledBy(Wextra)
+;
+
+Wsign-conversion
+C ObjC C++ ObjC++ Var(warn_sign_conversion) LangEnabledBy(C ObjC,Wconversion)
+Warn for implicit type conversions between signed and unsigned integers
+
Wsign-promo
C++ ObjC++ Var(warn_sign_promo) Warning
Warn when overload promotes from unsigned to signed
C ObjC Var(warn_strict_prototypes) Warning
Warn about unprototyped function declarations
+Wstrict-aliasing=
+C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall, 3, 0)
+;
+
+Wstrict-overflow=
+C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall, 1, 0)
+;
+
Wstrict-selector-match
ObjC ObjC++ Var(warn_strict_selector_match) Warning
Warn if type signatures of candidate methods do not match exactly
C ObjC C++ ObjC++ Warning
Warn if an undefined macro is used in an #if directive
+Wuninitialized
+C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall)
+;
+
+Wmaybe-uninitialized
+C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall)
+;
+
Wunknown-pragmas
-C ObjC C++ ObjC++ Warning
+C ObjC C++ ObjC++ Warning Var(warn_unknown_pragmas) LangEnabledBy(C ObjC C++ ObjC++,Wall, 1, 0)
Warn about unrecognized pragmas
Wunsuffixed-float-constants
C ObjC Var(warn_unsuffixed_float_constants) Warning
Warn about unsuffixed float constants
+Wunused
+C ObjC C++ ObjC++ LangEnabledBy(C ObjC C++ ObjC++,Wall)
+; documented in common.opt
+
+Wunused-local-typedefs
+C ObjC C++ ObjC++ Var(warn_unused_local_typedefs) Warning EnabledBy(Wunused)
+Warn when typedefs locally defined in a function are not used
+
Wunused-macros
-C ObjC C++ ObjC++ Warning
+C ObjC C++ ObjC++ Var(cpp_warn_unused_macros) Warning
Warn about macros defined in the main file that are not used
Wunused-result
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
+C ObjC C++ ObjC++ Var(cpp_warn_variadic_macros) Init(1) Warning
+Warn about using variadic macros
+
+Wvarargs
+C ObjC C++ ObjC++ Warning Var(warn_varargs) Init(1)
+Warn about questionable usage of the macros used to retrieve variable arguments
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
+C ObjC C++ ObjC++ Var(warn_volatile_register_var) Warning LangEnabledBy(C ObjC C++ ObjC++,Wall)
Warn when a register variable is declared volatile
+Wvirtual-move-assign
+C++ ObjC++ Var(warn_virtual_move_assign) Warning Init(1)
+Warn if a virtual base has a non-trivial move assignment operator
+
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
+Wzero-as-null-pointer-constant
+C++ ObjC++ Var(warn_zero_as_null_pointer_constant) Warning
+Warn when a literal '0' is used as null pointer
+
+Wuseless-cast
+C++ ObjC++ Var(warn_useless_cast) Warning
+Warn about useless casts
ansi
C ObjC C++ ObjC++
C++ ObjC++ Var(flag_access_control) Init(1)
Enforce class member access control semantics
+fada-spec-parent=
+C ObjC C++ ObjC++ RejectNegative Joined Var(ada_specs_parent)
+-fada-spec-parent=unit Dump Ada specs as child units of given parent
+
fall-virtual
C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
+fallow-parameterless-variadic-functions
+C ObjC Var(flag_allow_parameterless_variadic_functions)
+Allow variadic functions without named parameter
+
falt-external-templates
C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
No longer supported
C ObjC C++ ObjC++ Var(flag_no_asm, 0)
Recognize the \"asm\" keyword
+; Define extra predefined macros for use in libgcc.
+fbuilding-libgcc
+C ObjC C++ ObjC++ Undocumented Var(flag_building_libgcc)
+
fbuiltin
C ObjC C++ ObjC++ Var(flag_no_builtin, 0)
Recognize built-in functions
fbuiltin-
C ObjC C++ ObjC++ Joined
-fcheck-new
-C++ ObjC++ Var(flag_check_new)
-Check the return value of new
+fcanonical-system-headers
+C ObjC C++ ObjC++
+Where shorter, use canonicalized paths to systems headers.
+
+fcilkplus
+C ObjC C++ ObjC++ LTO Report Var(flag_cilkplus) Init(0)
+Enable Cilk Plus
fcond-mismatch
C ObjC C++ ObjC++
fconserve-space
C++ ObjC++ Var(flag_conserve_space)
-Reduce the size of object files
+Does nothing. Preserved for backward compatibility.
fconstant-string-class=
ObjC ObjC++ Joined MissingArgError(no class name specified with %qs)
-fconst-string-class=<name> Use class <name> for constant strings
+fconstexpr-depth=
+C++ ObjC++ Joined RejectNegative UInteger Var(max_constexpr_depth) Init(512)
+-fconstexpr-depth=<number> Specify maximum constexpr recursion depth
+
+fdebug-cpp
+C ObjC C++ ObjC++
+Emit debug annotations during preprocessing
+
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
+C++ ObjC++ Var(flag_deduce_init_list) Init(0)
+-fdeduce-init-list enable deduction of std::initializer_list for a template type parameter from a brace-enclosed initializer-list
+
+fdeclone-ctor-dtor
+C++ ObjC++ Var(flag_declone_ctor_dtor) Init(-1)
+Factor complex constructors and destructors to favor space over speed
fdefault-inline
C++ ObjC++ Ignore
C ObjC C++ ObjC++
Permit '$' as an identifier character
+fdump-ada-spec
+C ObjC C++ ObjC++ RejectNegative Var(flag_dump_ada_spec)
+Write all declarations as Ada code transitively
+
+fdump-ada-spec-slim
+C ObjC C++ ObjC++ RejectNegative Var(flag_dump_ada_spec_slim)
+Write all declarations as Ada code for the given file only
+
felide-constructors
C++ ObjC++ Var(flag_elide_constructors) Init(1)
C ObjC C++ ObjC++ Joined RejectNegative
-finput-charset=<cset> Specify the default character set for source files
+fextern-tls-init
+C++ ObjC++ Var(flag_extern_tls_init) Init(-1)
+Support dynamic initialization of thread-local variables in a different translation unit
fexternal-templates
C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
Recognize GNU-defined keywords
fgnu-runtime
-ObjC ObjC++
+ObjC ObjC++ LTO Report RejectNegative Var(flag_next_runtime,0) Init(NEXT_OBJC_RUNTIME)
Generate code for GNU runtime environment
fgnu89-inline
C ObjC C++ ObjC++ Var(flag_ms_extensions)
Don't warn about uses of Microsoft extensions
+fmudflap
+C ObjC C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
+
+fmudflapth
+C ObjC C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
+
+fmudflapir
+C ObjC C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
+
fname-mangling-version-
C++ ObjC++ Joined Ignore Warn(switch %qs is no longer supported)
C++ ObjC++ Ignore Warn(switch %qs is no longer supported)
fnext-runtime
-ObjC ObjC++
+ObjC ObjC++ LTO Report RejectNegative Var(flag_next_runtime)
Generate code for NeXT (Apple Mac OS X) runtime environment
fnil-receivers
C++ ObjC++ Optimization Var(flag_nothrow_opt)
Treat a throw() exception specification as noexcept to improve code size
+fobjc-abi-version=
+ObjC ObjC++ LTO Joined Report RejectNegative UInteger Var(flag_objc_abi)
+Specify which ABI to use for Objective-C family code and meta-data generation.
+
; Generate special '- .cxx_construct' and '- .cxx_destruct' methods
; to initialize any non-POD ivars in Objective-C++ classes.
fobjc-call-cxx-cdtors
Enable Objective-C exception and synchronization syntax
fobjc-gc
-ObjC ObjC++ Var(flag_objc_gc)
+ObjC ObjC++ LTO Var(flag_objc_gc)
Enable garbage collection (GC) in Objective-C/Objective-C++ programs
+fobjc-nilcheck
+ObjC ObjC++ Var(flag_objc_nilcheck,1)
+Enable inline checks for nil receivers with the NeXT runtime and ABI version 2.
+
; Nonzero means that we generate NeXT setjmp based exceptions.
fobjc-sjlj-exceptions
ObjC ObjC++ Var(flag_objc_sjlj_exceptions) Init(-1)
C ObjC C++ ObjC++ Var(flag_openmp)
Enable OpenMP (implies -frecursive in Fortran)
+fopenmp-simd
+C ObjC C++ ObjC++ Var(flag_openmp_simd)
+Enable OpenMP's SIMD directives
+
foperator-names
C++ ObjC++
Recognize C++ keywords like \"compl\" and \"xor\"
Look for and use PCH files even when preprocessing
fpermissive
-C++ ObjC++
+C++ ObjC++ Var(flag_permissive)
Downgrade conformance errors to warnings
fplan9-extensions
C ObjC C++ ObjC++
Treat the input file as already preprocessed
+ftrack-macro-expansion
+C ObjC C++ ObjC++ JoinedOrMissing RejectNegative UInteger
+; converted into ftrack-macro-expansion=
+
+ftrack-macro-expansion=
+C ObjC C++ ObjC++ JoinedOrMissing RejectNegative UInteger
+-ftrack-macro-expansion=<0|1|2> Track locations of tokens coming from macro expansion and display them in error messages
+
fpretty-templates
C++ ObjC++ Var(flag_pretty_templates) Init(1)
-fno-pretty-templates Do not pretty-print template specializations as the template signature followed by the arguments
freplace-objc-classes
-ObjC ObjC++ Var(flag_replace_objc_classes)
+ObjC ObjC++ LTO Var(flag_replace_objc_classes)
Used in Fix-and-Continue mode to indicate that object files may be swapped in at runtime
frepo
C ObjC C++ ObjC++ Joined RejectNegative UInteger
-ftabstop=<number> Distance between tab stops for column reporting
+ftemplate-backtrace-limit=
+C++ ObjC++ Joined RejectNegative UInteger Var(template_backtrace_limit) Init(10)
+Set the maximum number of template instantiation notes for a single warning or error
+
ftemplate-depth-
C++ ObjC++ Joined RejectNegative Undocumented Alias(ftemplate-depth=)
fvisibility-inlines-hidden
C++ ObjC++
-Marks all inlined methods as having hidden visibility
+Marks all inlined functions and methods as having hidden visibility
fvisibility-ms-compat
C++ ObjC++ Var(flag_visibility_ms_compat)
C ObjC C++ ObjC++ Joined
-femit-struct-debug-detailed=<spec-list> Detailed reduced debug info for structs
+fext-numeric-literals
+C++ ObjC++
+Interpret imaginary, fixed-point, or other gnu number suffix as the corresponding
+number literal rather than a user-defined number literal.
+
idirafter
C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs)
-idirafter <dir> Add <dir> to the end of the system include path
; Documented in common.opt
pedantic
-C ObjC C++ ObjC++
-; Documented in common.opt
-
-pedantic-errors
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Alias(Wpedantic)
; Documented in common.opt
print-objc-runtime-info
std=c++98
C++ ObjC++
-Conform to the ISO 1998 C++ standard
+Conform to the ISO 1998 C++ standard revised by the 2003 technical corrigendum
+
+std=c++03
+C++ ObjC++ Alias(std=c++98)
+Conform to the ISO 1998 C++ standard revised by the 2003 technical corrigendum
+
+std=c++11
+C++ ObjC++
+Conform to the ISO 2011 C++ standard
std=c++0x
+C++ ObjC++ Alias(std=c++11) Undocumented
+Deprecated in favor of -std=c++11
+
+std=c++1y
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.
+Conform to the ISO 2014(?) C++ draft standard (experimental and incomplete support)
-std=c1x
+std=c++14
+C++ ObjC++ Alias(std=c++1y) Undocumented
+
+std=c11
C ObjC
-Conform to the ISO 201X C standard draft (experimental and incomplete support)
+Conform to the ISO 2011 C standard (experimental and incomplete support)
+
+std=c1x
+C ObjC Alias(std=c11)
+Deprecated in favor of -std=c11
std=c89
C ObjC Alias(std=c90)
std=gnu++98
C++ ObjC++
-Conform to the ISO 1998 C++ standard with GNU extensions
+Conform to the ISO 1998 C++ standard revised by the 2003 technical
+corrigendum with GNU extensions
+
+std=gnu++03
+C++ ObjC++ Alias(std=gnu++98)
+Conform to the ISO 1998 C++ standard revised by the 2003 technical
+corrigendum with GNU extensions
+
+std=gnu++11
+C++ ObjC++
+Conform to the ISO 2011 C++ standard with GNU extensions (experimental and incomplete support)
std=gnu++0x
+C++ ObjC++ Alias(std=gnu++11)
+Deprecated in favor of -std=gnu++11
+
+std=gnu++1y
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.
+Conform to the ISO 201y(7?) C++ draft standard with GNU extensions (experimental and incomplete support)
-std=gnu1x
+std=gnu11
C ObjC
-Conform to the ISO 201X C standard draft with GNU extensions (experimental and incomplete support)
+Conform to the ISO 2011 C standard with GNU extensions (experimental and incomplete support)
+
+std=gnu1x
+C ObjC Alias(std=gnu11)
+Deprecated in favor of -std=gnu11
std=gnu89
C ObjC Alias(std=gnu90)
C ObjC Alias(std=c99)
Deprecated in favor of -std=iso9899:1999
+std=iso9899:2011
+C ObjC Alias(std=c11)
+Conform to the ISO 2011 C standard (experimental and incomplete support)
+
traditional
Driver
projects / gcc.git / blobdiff