826 lines
17 KiB
Plaintext
826 lines
17 KiB
Plaintext
; Options for the C, ObjC, C++ and ObjC++ front ends.
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; Copyright (C) 2003 Free Software Foundation, Inc.
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;
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; This file is part of GCC.
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;
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; GCC is free software; you can redistribute it and/or modify it under
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; the terms of the GNU General Public License as published by the Free
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; Software Foundation; either version 2, or (at your option) any later
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; version.
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;
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; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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; WARRANTY; without even the implied warranty of MERCHANTABILITY or
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; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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; for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with GCC; see the file COPYING. If not, write to the Free
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; Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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; 02111-1307, USA.
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; This file is processed by the script opts.sh. It is a database of
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; command line options, with each record separated by a blank line,
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; and each field appearing on its own line. The first field is the
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; command-line switch with the leading "-" removed. All options
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; beginning with "f" or "W" are implicitly assumed to take a "no-"
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; form; this form should not be listed. If you do not want this
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; negative form and you want it to be automatically rejected, add
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; RejectNegative to the second field.
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; The second field is a space-separated list of which parts of the
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; compiler recognize the switch, as declared by "Language" entries.
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; If the switch takes an argument, then you should also specify
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; "Joined" and/or "Separate" to indicate where the argument can
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; appear. If a Joined argument can legitimately be omitted, specify
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; "JoinedOrMissing" instead of "Joined". If the argument to a switch
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; is a non-negative integer, you can specify "UInteger" and the switch
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; decoder will convert the argument for you, or complain to the user
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; if the argument is invalid.
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; The third field is the help text to output with --help. This is
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; automatically line-wrapped on output. Normally the switch is output
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; automatically, with the help text on the right hand side of the
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; output. However, if the help text contains a tab character, the
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; text to the left of the tab is output instead of the switch, and the
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; text to its right forms the help. This is useful for elaborating on
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; what type of argument a switch takes, for example. If the second
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; field contains "Undocumented" then nothing is output with --help.
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; Only do this with good reason like the switch being internal between
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; the driver and the front end - it is not an excuse to leave a switch
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; undocumented.
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; Comments can appear on their own line anwhere in the file, preceded
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; by a semicolon. Whitespace is permitted before the semicolon.
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; For each switch XXX below, an enumeration constant is created by the
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; script opts.sh spelt OPT_XXX, but with all non-alphanumeric
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; characters replaced with an underscore.
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; Please try to keep this file in ASCII collating order.
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Language
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C
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Language
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ObjC
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Language
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C++
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Language
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ObjC++
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-output-pch=
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C ObjC C++ ObjC++ Joined Separate
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A
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C ObjC C++ ObjC++ Joined Separate
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-A<question>=<answer> Assert the <answer> to <question>. Putting '-' before <question> disables the <answer> to <question>
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C
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C ObjC C++ ObjC++
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Do not discard comments
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CC
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C ObjC C++ ObjC++
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Do not discard comments in macro expansions
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D
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C ObjC C++ ObjC++ Joined Separate
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-D<macro>[=<val>] Define a <macro> with <val> as its value. If just <macro> is given, <val> is taken to be 1
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E
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C ObjC C++ ObjC++ Undocumented
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H
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C ObjC C++ ObjC++
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Print the name of header files as they are used
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I
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C ObjC C++ ObjC++ Joined Separate
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-I <dir> Add <dir> to the end of the main include path. -I- gives more include path control; see info documentation
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M
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C ObjC C++ ObjC++
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Generate make dependencies
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MD
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C ObjC C++ ObjC++ Separate
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Generate make dependencies and compile
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MF
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C ObjC C++ ObjC++ Joined Separate
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-MF <file> Write dependency output to the given file
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MG
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C ObjC C++ ObjC++
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Treat missing header files as generated files
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MM
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C ObjC C++ ObjC++
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Like -M but ignore system header files
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MMD
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C ObjC C++ ObjC++ Separate
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Like -MD but ignore system header files
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MP
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C ObjC C++ ObjC++
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Generate phony targets for all headers
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MQ
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C ObjC C++ ObjC++ Joined Separate
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-MQ <target> Add a MAKE-quoted target
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MT
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C ObjC C++ ObjC++ Joined Separate
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-MT <target> Add an unquoted target
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P
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C ObjC C++ ObjC++
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Do not generate #line directives
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U
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C ObjC C++ ObjC++ Joined Separate
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-U<macro> Undefine <macro>
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Wabi
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C++ ObjC++
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Wall
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C ObjC C++ ObjC++
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Enable most warning messages
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Wbad-function-cast
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C ObjC
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Warn about casting functions to incompatible types
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Wcast-qual
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C ObjC C++ ObjC++
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Warn about casts which discard qualifiers
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Wchar-subscripts
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C ObjC C++ ObjC++
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Warn about subscripts whose type is \"char\"
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Wcomment
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C ObjC C++ ObjC++
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Warn about possibly nested block comments, and C++ comments spanning more than one physical line
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Wcomments
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C ObjC C++ ObjC++
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Synonym for -Wcomment
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Wconversion
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C ObjC C++ ObjC++
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Warn about possibly confusing type conversions
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Wctor-dtor-privacy
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C++ ObjC++
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Warn when all constructors and destructors are private
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Wdeclaration-after-statement
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C ObjC
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Warn when a declaration is found after a statement
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Wdeprecated
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C++ ObjC++
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Warn about deprecated compiler features
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Wdiv-by-zero
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C ObjC
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Warn about compile-time integer division by zero
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Weffc++
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C++ ObjC++
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Warn about violations of Effective C++ style rules
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Wendif-labels
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C ObjC C++ ObjC++
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Warn about stray tokens after #elif and #endif
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Werror
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C ObjC C++ ObjC++
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; Documented in common.opt
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Werror-implicit-function-declaration
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C ObjC RejectNegative
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Make implicit function declarations an error
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Wfloat-equal
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C ObjC C++ ObjC++
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Warn if testing floating point numbers for equality
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Wformat
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C ObjC C++ ObjC++
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Warn about printf/scanf/strftime/strfmon format string anomalies
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Wformat-extra-args
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C ObjC C++ ObjC++
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Warn if passing too many arguments to a function for its format string
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Wformat-nonliteral
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C ObjC C++ ObjC++
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Warn about format strings that are not literals
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Wformat-security
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C ObjC C++ ObjC++
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Warn about possible security problems with format functions
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Wformat-y2k
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C ObjC C++ ObjC++
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Warn about strftime formats yielding 2-digit years
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Wformat-zero-length
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C ObjC
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Wformat=
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C ObjC C++ ObjC++ Joined
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Winit-self
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C ObjC C++ ObjC++
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Warn about variables which are initialized to themselves.
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Wimplicit
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C ObjC C++ ObjC++
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Wimplicit-function-declaration
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C ObjC
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Warn about implicit function declarations
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Wimplicit-int
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C ObjC
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Warn when a declaration does not specify a type
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Wimport
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C ObjC C++ ObjC++
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Deprecated. This switch has no effect.
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Winvalid-offsetof
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C++ ObjC++
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Warn about invalid uses of the \"offsetof\" macro
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Winvalid-pch
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C ObjC C++ ObjC++
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Warn about PCH files that are found but not used
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Wlong-long
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C ObjC C++ ObjC++
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Do not warn about using \"long long\" when -pedantic
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Wmain
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C ObjC
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Warn about suspicious declarations of \"main\"
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Wmissing-braces
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C ObjC C++ ObjC++
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Warn about possibly missing braces around initializers
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Wmissing-declarations
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C ObjC
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Warn about global functions without previous declarations
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Wmissing-format-attribute
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C ObjC C++ ObjC++
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Warn about functions which might be candidates for format attributes
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Wmissing-prototypes
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C ObjC
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Warn about global functions without prototypes
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Wmultichar
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C ObjC C++ ObjC++
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Warn about use of multi-character character constants
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Wnested-externs
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C ObjC
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Warn about \"extern\" declarations not at file scope
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Wnon-template-friend
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C++ ObjC++
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Warn when non-templatized friend functions are declared within a template
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Wnon-virtual-dtor
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C++ ObjC++
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Warn about non-virtual destructors
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Wnonnull
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C ObjC
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Wold-style-cast
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C++ ObjC++
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Warn if a C-style cast is used in a program
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Wold-style-definition
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C ObjC
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Warn if an old-style parameter definition is used
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Woverloaded-virtual
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C++ ObjC++
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Warn about overloaded virtual function names
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Wparentheses
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C ObjC C++ ObjC++
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Warn about possibly missing parentheses
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Wpmf-conversions
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C++ ObjC++
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Warn when converting the type of pointers to member functions
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Wpointer-arith
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C ObjC C++ ObjC++
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Warn about function pointer arithmetic
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Wprotocol
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ObjC ObjC++
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Warn if inherited methods are unimplemented
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Wredundant-decls
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C ObjC C++ ObjC++
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Warn about multiple declarations of the same object
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Wreorder
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C++ ObjC++
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Warn when the compiler reorders code
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Wreturn-type
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C ObjC C++ ObjC++
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Warn whenever a function's return type defaults to \"int\" (C), or about inconsistent return types (C++)
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Wselector
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ObjC ObjC++
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Warn if a selector has multiple methods
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Wsequence-point
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C ObjC
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Warn about possible violations of sequence point rules
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Wsign-compare
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C ObjC C++ ObjC++
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Warn about signed-unsigned comparisons
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Wsign-promo
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C++ ObjC++
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Warn when overload promotes from unsigned to signed
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Wstrict-prototypes
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C ObjC
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Warn about unprototyped function declarations
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Wsynth
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C++ ObjC++
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Warn when synthesis behavior differs from Cfront
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Wsystem-headers
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C ObjC C++ ObjC++
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Do not suppress warnings from system headers
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Wtraditional
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C ObjC
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Warn about features not present in traditional C
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Wtrigraphs
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C ObjC C++ ObjC++
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Warn if trigraphs are encountered that might affect the meaning of the program
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Wundeclared-selector
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ObjC ObjC++
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Wundef
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C ObjC C++ ObjC++
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Warn if an undefined macro is used in an #if directive
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Wunknown-pragmas
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C ObjC C++ ObjC++
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Warn about unrecognized pragmas
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Wunused-macros
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C ObjC C++ ObjC++
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Warn about macros defined in the main file that are not used
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Wwrite-strings
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C ObjC C++ ObjC++
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Give strings the type \"array of char\"
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ansi
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C ObjC C++ ObjC++
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A synonym for -std=c89. In a future version of GCC it will become synonymous with -std=c99 instead
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d
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C ObjC C++ ObjC++ Joined
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; Documented in common.opt. FIXME - what about -dI, -dD, -dN and -dD?
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faccess-control
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C++ ObjC++
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Enforce class member access control semantics
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fall-virtual
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C++ ObjC++
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falt-external-templates
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C++ ObjC++
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Change when template instances are emitted
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fasm
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C ObjC C++ ObjC++
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Recognize the \"asm\" keyword
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fbuiltin
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C ObjC C++ ObjC++
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Recognize built-in functions
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fbuiltin-
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C ObjC C++ ObjC++ Joined
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fcheck-new
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C++ ObjC++
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Check the return value of new
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fcond-mismatch
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C ObjC C++ ObjC++
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Allow the arguments of the '?' operator to have different types
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fconserve-space
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C++ ObjC++
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Reduce the size of object files
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fconst-strings
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C++ ObjC++
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Make string literals \"const char[]\" not \"char[]\"
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fconstant-string-class=
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ObjC ObjC++ Joined
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-fconst-string-class=<name> Use class <name> for constant strings
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fdefault-inline
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C++ ObjC++
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Inline member functions by default
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fdollars-in-identifiers
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C ObjC C++ ObjC++
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Permit '$' as an identifier character
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fdump-
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C ObjC C++ ObjC++ Joined RejectNegative
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-fdump-<type> Dump various compiler internals to a file
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felide-constructors
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C++ ObjC++
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fenforce-eh-specs
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C++ ObjC++
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Generate code to check exception specifications
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fenum-int-equiv
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C++ ObjC++
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fexec-charset=
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C ObjC C++ ObjC++ Joined RejectNegative
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-fexec-charset=<cset> Convert all strings and character constants to character set <cset>
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finput-charset=
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C ObjC C++ ObjC++ Joined RejectNegative
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-finput-charset=<cset> Specify the default character set for source files.
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fexternal-templates
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C++ ObjC++
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ffixed-form
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C ObjC
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ffixed-line-length-
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C ObjC Joined
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ffor-scope
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C++ ObjC++
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Scope of for-init-statement variables is local to the loop
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ffreestanding
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C ObjC
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Do not assume that standard C libraries and \"main\" exist
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fgnu-keywords
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C++ ObjC++
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Recognize GNU-defined keywords
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fgnu-runtime
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ObjC ObjC++
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Generate code for GNU runtime environment
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fguiding-decls
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C++ ObjC++
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fhandle-exceptions
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C++ ObjC++
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fhonor-std
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C++ ObjC++
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fhosted
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C ObjC
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Assume normal C execution environment
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fhuge-objects
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C++ ObjC++
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Enable support for huge objects
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fimplement-inlines
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C++ ObjC++
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Export functions even if they can be inlined
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fimplicit-inline-templates
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C++ ObjC++
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Emit implicit instantiations of inline templates
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fimplicit-templates
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C++ ObjC++
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Emit implicit instantiations of templates
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flabels-ok
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C++ ObjC++
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fms-extensions
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C ObjC C++ ObjC++
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Don't warn about uses of Microsoft extensions
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fname-mangling-version-
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C++ ObjC++ Joined
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fnew-abi
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C++ ObjC++
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fnext-runtime
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ObjC ObjC++
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Generate code for NeXT (Apple Mac OS X) runtime environment
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fnil-receivers
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ObjC ObjC++
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Assume that receivers of Objective-C messages may be nil
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fnonansi-builtins
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C++ ObjC++
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fnonnull-objects
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C++ ObjC++
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fobjc-exceptions
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ObjC ObjC++
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Enable Objective-C exception and synchronization syntax
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foperator-names
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C++ ObjC++
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Recognize C++ kewords like \"compl\" and \"xor\"
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foptional-diags
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C++ ObjC++
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Enable optional diagnostics
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fpch-deps
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C ObjC C++ ObjC++
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fpermissive
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C++ ObjC++
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Downgrade conformance errors to warnings
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fpreprocessed
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C ObjC C++ ObjC++
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Treat the input file as already preprocessed
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freplace-objc-classes
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ObjC ObjC++
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Used in Fix-and-Continue mode to indicate that object files may be swapped in at runtime
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frepo
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C++ ObjC++
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Enable automatic template instantiation
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frtti
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C++ ObjC++
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Generate run time type descriptor information
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fshort-double
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C ObjC C++ ObjC++
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Use the same size for double as for float
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fshort-enums
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C ObjC C++ ObjC++
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Use the narrowest integer type possible for enumeration types
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fshort-wchar
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C ObjC C++ ObjC++
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Force the underlying type for \"wchar_t\" to be \"unsigned short\"
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fshow-column
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C ObjC C++ ObjC++
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fsigned-bitfields
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C ObjC C++ ObjC++
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When \"signed\" or \"unsigned\" is not given make the bitfield signed
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fsigned-char
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C ObjC C++ ObjC++
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Make \"char\" signed by default
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fsquangle
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C++ ObjC++
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fstats
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C++ ObjC++
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Display statistics accumulated during compilation
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fstrict-prototype
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C++ ObjC++
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ftabstop=
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C ObjC C++ ObjC++ Joined RejectNegative UInteger
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-ftabstop=<number> Distance between tab stops for column reporting
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|
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ftemplate-depth-
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C++ ObjC++ Joined RejectNegative UInteger
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-ftemplate-depth-<number> Specify maximum template instantiation depth
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|
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fthis-is-variable
|
|
C++ ObjC++
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|
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|
funsigned-bitfields
|
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C ObjC C++ ObjC++
|
|
When \"signed\" or \"unsigned\" is not given make the bitfield unsigned
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|
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funsigned-char
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C ObjC C++ ObjC++
|
|
Make \"char\" unsigned by default
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|
|
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fuse-cxa-atexit
|
|
C++ ObjC++
|
|
Use __cxa_atexit to register destructors
|
|
|
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fvtable-gc
|
|
C++ ObjC++
|
|
Discard unused virtual functions
|
|
|
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fvtable-thunks
|
|
C++ ObjC++
|
|
Implement vtables using thunks
|
|
|
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fweak
|
|
C++ ObjC++
|
|
Emit common-like symbols as weak symbols
|
|
|
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fwide-exec-charset=
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|
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
|
|
|
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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
|
|
-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>
|
|
|
|
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
|
|
|
|
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
|
|
|
|
remap
|
|
C ObjC C++ ObjC++
|
|
Remap file names when including files
|
|
|
|
std=c++98
|
|
C++ ObjC++
|
|
Conform to the ISO 1998 C++ standard
|
|
|
|
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=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
|
|
Deprecated in favor of -std=c89
|
|
|
|
std=iso9899:199409
|
|
C ObjC
|
|
Conform to the ISO 1990 C standard as amended in 1994
|
|
|
|
std=iso9899:1999
|
|
C ObjC
|
|
Deprecated in favor of -std=c99
|
|
|
|
std=iso9899:199x
|
|
C ObjC
|
|
Deprecated in favor of -std=c99
|
|
|
|
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
|
|
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.
|