; Options for the C, ObjC, C++ and ObjC++ front ends.
-; Copyright (C) 2003 Free Software Foundation, Inc.
+; Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
;
; This file is part of GCC.
;
; the terms of the GNU General Public License as published by the Free
; Software Foundation; either version 2, 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 COPYING. If not, write to the Free
-; Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-; 02111-1307, USA.
-
-
-; This file is processed by the script opts.sh. It is a database of
-; command line options, with each record separated by a blank line,
-; and each field appearing on its own line. The first field is the
-; command-line switch with the leading "-" removed. All options
-; beginning with "f" or "W" are implicitly assumed to take a "no-"
-; form; this form should not be listed. If you do not want this
-; negative form and you want it to be automatically rejected, add
-; RejectNegative to the second field.
-
-; The second field is a space-separated list of which parts of the
-; compiler recognize the switch, as declared by "Language" entries.
-; If the switch takes an argument, then you should also specify
-; "Joined" and/or "Separate" to indicate where the argument can
-; appear. If a Joined argument can legitimately be omitted, specify
-; "JoinedOrMissing" instead of "Joined". If the argument to a switch
-; is a non-negative integer, you can specify "UInteger" and the switch
-; decoder will convert the argument for you, or complain to the user
-; if the argument is invalid.
-
-; The third field is the help text to output with --help. This is
-; automatically line-wrapped on output. Normally the switch is output
-; automatically, with the help text on the right hand side of the
-; output. However, if the help text contains a tab character, the
-; text to the left of the tab is output instead of the switch, and the
-; text to its right forms the help. This is useful for elaborating on
-; what type of argument a switch takes, for example.
-
-; Comments can appear on their own line anwhere in the file, preceded
-; by a semicolon. Whitespace is permitted before the semicolon.
-
-; For each switch XXX below, an enumeration constant is created by the
-; script opts.sh spelt OPT_XXX, but with all non-alphanumeric
-; characters replaced with an underscore.
+; Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+; 02110-1301, USA.
+
+; See the GCC internals manual for a description of this file's format.
; Please try to keep this file in ASCII collating order.
-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++
+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++
I
C ObjC C++ ObjC++ Joined Separate
--I <dir> Add <dir> to the end of the main include path. -I- gives more include path control; see info documentation
+-I <dir> Add <dir> to the end of the main include path
M
C ObjC C++ ObjC++
-U<macro> Undefine <macro>
Wabi
-C++ ObjC++
+C++ ObjC++ Var(warn_abi)
+Warn about things that will change when compiling with an ABI-compliant compiler
Wall
C ObjC C++ ObjC++
Enable most warning messages
+Wassign-intercept
+ObjC ObjC++ Var(warn_assign_intercept)
+Warn whenever an Objective-C assignment is being intercepted by the garbage collector
+
Wbad-function-cast
-C ObjC
+C ObjC Var(warn_bad_function_cast)
Warn about casting functions to incompatible types
+Wc++-compat
+C Var(warn_cxx_compat)
+Warn about C constructs that are not in the common subset of C and C++
+
+
Wcast-qual
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_cast_qual)
Warn about casts which discard qualifiers
Wchar-subscripts
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_char_subscripts)
Warn about subscripts whose type is \"char\"
Wcomment
Synonym for -Wcomment
Wconversion
-C ObjC C++ ObjC++
-Warn about possibly confusing type conversions
+C ObjC C++ ObjC++ Var(warn_conversion)
+Warn for implicit type conversions that may change a value
Wctor-dtor-privacy
-C++ ObjC++
+C++ ObjC++ Var(warn_ctor_dtor_privacy)
+Warn when all constructors and destructors are private
+
+Wdeclaration-after-statement
+C ObjC Var(warn_declaration_after_statement)
+Warn when a declaration is found after a statement
Wdeprecated
-C++ ObjC++
+C++ ObjC++ Var(warn_deprecated) Init(1)
+Warn about deprecated compiler features
Wdiv-by-zero
-C ObjC
+C ObjC C++ Var(warn_div_by_zero) Init(1)
Warn about compile-time integer division by zero
Weffc++
-C++ ObjC++
+C++ ObjC++ Var(warn_ecpp)
+Warn about violations of Effective C++ style rules
+
+Wempty-body
+C ObjC C++ ObjC++ Var(warn_empty_body) Init(-1)
+Warn about an empty body in an if or else statement
Wendif-labels
C ObjC C++ ObjC++
Make implicit function declarations an error
Wfloat-equal
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_float_equal)
Warn if testing floating point numbers for equality
Wformat
Warn about printf/scanf/strftime/strfmon format string anomalies
Wformat-extra-args
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_format_extra_args)
Warn if passing too many arguments to a function for its format string
Wformat-nonliteral
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_format_nonliteral)
Warn about format strings that are not literals
Wformat-security
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_format_security)
Warn about possible security problems with format functions
Wformat-y2k
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_format_y2k)
Warn about strftime formats yielding 2-digit years
Wformat-zero-length
-C ObjC
+C ObjC Var(warn_format_zero_length)
+Warn about zero-length formats
Wformat=
C ObjC C++ ObjC++ Joined
+Winit-self
+C ObjC C++ ObjC++ Var(warn_init_self)
+Warn about variables which are initialized to themselves
+
Wimplicit
C ObjC C++ ObjC++
Wimplicit-function-declaration
-C ObjC
+C ObjC Var(mesg_implicit_function_declaration) Init(-1)
Warn about implicit function declarations
Wimplicit-int
-C ObjC
+C ObjC Var(warn_implicit_int)
Warn when a declaration does not specify a type
Wimport
C ObjC C++ ObjC++
-Warn about uses of the \"#import\" directive
+Deprecated. This switch has no effect
+
+Wint-to-pointer-cast
+C ObjC Var(warn_int_to_pointer_cast) Init(1)
+Warn when there is a cast to a pointer from an integer of a different size
Winvalid-offsetof
-C++ ObjC++
+C++ ObjC++ Var(warn_invalid_offsetof) Init(1)
+Warn about invalid uses of the \"offsetof\" macro
Winvalid-pch
C ObjC C++ ObjC++
Warn about PCH files that are found but not used
Wlong-long
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_long_long) Init(1)
Do not warn about using \"long long\" when -pedantic
Wmain
Warn about suspicious declarations of \"main\"
Wmissing-braces
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_missing_braces)
Warn about possibly missing braces around initializers
Wmissing-declarations
-C ObjC
+C ObjC Var(warn_missing_declarations)
Warn about global functions without previous declarations
+Wmissing-field-initializers
+C ObjC C++ ObjC++ Var(warn_missing_field_initializers) Init(-1)
+Warn about missing fields in struct initializers
+
Wmissing-format-attribute
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_missing_format_attribute)
Warn about functions which might be candidates for format attributes
+Wmissing-include-dirs
+C ObjC C++ ObjC++
+Warn about user-specified include directories that do not exist
+
Wmissing-prototypes
-C ObjC
+C ObjC Var(warn_missing_prototypes)
Warn about global functions without prototypes
Wmultichar
Warn about use of multi-character character constants
Wnested-externs
-C ObjC
+C ObjC Var(warn_nested_externs)
Warn about \"extern\" declarations not at file scope
Wnon-template-friend
-C++ ObjC++
+C++ ObjC++ Var(warn_nontemplate_friend) Init(1)
+Warn when non-templatized friend functions are declared within a template
Wnon-virtual-dtor
-C++ ObjC++
+C++ ObjC++ Var(warn_nonvdtor)
+Warn about non-virtual destructors
Wnonnull
-C ObjC
+C ObjC Var(warn_nonnull)
+Warn about NULL being passed to argument slots marked as requiring non-NULL
+
+Wnormalized=
+C ObjC C++ ObjC++ Joined
+-Wnormalized=<id|nfc|nfkc> Warn about non-normalised Unicode strings
Wold-style-cast
-C++ ObjC++
+C++ ObjC++ Var(warn_old_style_cast)
+Warn if a C-style cast is used in a program
+
+Wold-style-definition
+C ObjC Var(warn_old_style_definition)
+Warn if an old-style parameter definition is used
+
+Woverlength-strings
+C ObjC C++ ObjC++ Var(warn_overlength_strings) Init(-1)
+Warn if a string is longer than the maximum portable length specified by the standard
Woverloaded-virtual
-C++ ObjC++
+C++ ObjC++ Var(warn_overloaded_virtual)
+Warn about overloaded virtual function names
+
+Woverride-init
+C ObjC Var(warn_override_init) Init(-1)
+Warn about overriding initializers without side effects
Wparentheses
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_parentheses)
Warn about possibly missing parentheses
Wpmf-conversions
-C++ ObjC++
+C++ ObjC++ Var(warn_pmf2ptr) Init(1)
+Warn when converting the type of pointers to member functions
Wpointer-arith
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_pointer_arith)
Warn about function pointer arithmetic
+Wpointer-to-int-cast
+C ObjC Var(warn_pointer_to_int_cast) Init(1)
+Warn when a pointer is cast to an integer of a different size
+
+Wpragmas
+C ObjC C++ ObjC++ Var(warn_pragmas) Init(1)
+Warn about misuses of pragmas
+
Wprotocol
-ObjC ObjC++
+ObjC ObjC++ Var(warn_protocol) Init(1)
+Warn if inherited methods are unimplemented
Wredundant-decls
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_redundant_decls)
Warn about multiple declarations of the same object
Wreorder
-C++ ObjC++
+C++ ObjC++ Var(warn_reorder)
+Warn when the compiler reorders code
Wreturn-type
-C ObjC C++ ObjC++
-Warn whenever a function's return type defaults to \"int\"
+C ObjC C++ ObjC++ Var(warn_return_type)
+Warn whenever a function's return type defaults to \"int\" (C), or about inconsistent return types (C++)
Wselector
-ObjC ObjC++
+ObjC ObjC++ Var(warn_selector)
+Warn if a selector has multiple methods
Wsequence-point
-C ObjC
+C ObjC C++ ObjC++ Var(warn_sequence_point)
Warn about possible violations of sequence point rules
Wsign-compare
-C ObjC C++ ObjC++
+C ObjC C++ ObjC++ Var(warn_sign_compare) Init(-1)
Warn about signed-unsigned comparisons
Wsign-promo
+C++ ObjC++ Var(warn_sign_promo)
+Warn when overload promotes from unsigned to signed
+
+Wstrict-null-sentinel
C++ ObjC++
+Warn about uncasted NULL used as sentinel
Wstrict-prototypes
-C ObjC
+C ObjC Var(warn_strict_prototypes)
Warn about unprototyped function declarations
+Wstrict-selector-match
+ObjC ObjC++ Var(warn_strict_selector_match)
+Warn if type signatures of candidate methods do not match exactly
+
Wsynth
-C++ ObjC++
+C++ ObjC++ Var(warn_synth)
+Warn when synthesis behavior differs from Cfront
Wsystem-headers
C ObjC C++ ObjC++
Do not suppress warnings from system headers
Wtraditional
-C ObjC
+C ObjC Var(warn_traditional)
Warn about features not present in traditional C
+Wtraditional-conversion
+C ObjC Var(warn_traditional_conversion)
+Warn of prototypes causing type conversions different from what would happen in the absence of prototype
+
Wtrigraphs
C ObjC C++ ObjC++
Warn if trigraphs are encountered that might affect the meaning of the program
Wundeclared-selector
-ObjC ObjC++
+ObjC ObjC++ Var(warn_undeclared_selector)
+Warn about @selector()s without previously declared methods
Wundef
C ObjC C++ ObjC++
C ObjC C++ ObjC++
Warn about macros defined in the main file that are not used
-Wwrite-strings
+Wvariadic-macros
C ObjC C++ ObjC++
-Give strings the type \"array of char\"
+Do not warn about using variadic macros when -pedantic
+
+Wwrite-strings
+C ObjC C++ ObjC++ Var(warn_write_strings)
+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)
+Warn when a pointer differs in signedness in an assignment
ansi
C ObjC C++ ObjC++
-A synonym for -std=c89. In a future version of GCC it will become synonymous with -std=c99 instead
+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?
-fabi-version=
-C++ ObjC++ Joined UInteger
-
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++
fcheck-new
C++ ObjC++
+Check the return value of new
fcond-mismatch
C ObjC C++ ObjC++
fconserve-space
C++ ObjC++
-
-fconst-strings
-C++ ObjC++
+Reduce the size of object files
fconstant-string-class=
ObjC ObjC++ Joined
+-fconst-string-class=<name> Use class <name> for constant strings
fdefault-inline
C++ ObjC++
+Inline member functions by default
fdollars-in-identifiers
C ObjC C++ ObjC++
Permit '$' as an identifier character
-fdump-
-C ObjC C++ ObjC++ Joined RejectNegative
-
felide-constructors
C++ ObjC++
fenforce-eh-specs
C++ ObjC++
+Generate code to check exception specifications
fenum-int-equiv
C++ ObjC++
C ObjC C++ ObjC++ Joined RejectNegative
-fexec-charset=<cset> Convert all strings and character constants to character set <cset>
-fexternal-templates
-C++ ObjC++
+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
-ffixed-form
-C ObjC
-ffixed-line-length-
-C ObjC Joined
+fexternal-templates
+C++ ObjC++
ffor-scope
C++ ObjC++
+Scope of for-init-statement variables is local to the loop
ffreestanding
C ObjC
fgnu-keywords
C++ ObjC++
+Recognize GNU-defined keywords
fgnu-runtime
ObjC ObjC++
+Generate code for GNU runtime environment
fguiding-decls
C++ ObjC++
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++ Var(flag_friend_injection)
+Inject friend functions into enclosing namespace
flabels-ok
C++ ObjC++
fms-extensions
C ObjC C++ ObjC++
+Don't warn about uses of Microsoft extensions
fname-mangling-version-
C++ ObjC++ Joined
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
+
foperator-names
C++ ObjC++
+Recognize C++ kewords 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++
+Generate run time type descriptor information
fshort-double
C ObjC C++ ObjC++
C ObjC C++ ObjC++
Force the underlying type for \"wchar_t\" to be \"unsigned short\"
-fshow-column
-C ObjC C++ ObjC++
-
fsigned-bitfields
C ObjC C++ ObjC++
When \"signed\" or \"unsigned\" is not given make the bitfield signed
fstats
C++ ObjC++
+Display statistics accumulated during compilation
fstrict-prototype
C++ ObjC++
-ftabstop=<number> Distance between tab stops for column reporting
ftemplate-depth-
-C++ ObjC++ Joined RejectNegative UInteger
+C++ ObjC++ Joined RejectNegative UInteger
+-ftemplate-depth-<number> Specify maximum template instantiation depth
fthis-is-variable
C++ ObjC++
+fthreadsafe-statics
+C++ ObjC++
+-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
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
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
idirafter
C ObjC C++ ObjC++ Joined Separate
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
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 <dir> Add <dir> to the end of the main include path
lang-asm
-C
-For internal use only
+C Undocumented
+
+lang-fortran
+C Undocumented
lang-objc
-C ObjC C++ ObjC++
-For internal use only
+C ObjC C++ ObjC++ Undocumented
nostdinc
C ObjC C++ ObjC++
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++
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
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=iso9899:1990
C ObjC
-Deprecated in favor of -std=c89
+Conform to the ISO 1990 C standard
std=iso9899:199409
C ObjC
std=iso9899:1999
C ObjC
-Deprecated in favor of -std=c99
+Conform to the ISO 1999 C standard
std=iso9899:199x
C ObjC
-Deprecated in favor of -std=c99
+Deprecated in favor of -std=iso9899:1999
traditional-cpp
C ObjC C++ ObjC++
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