[wxWidgets.git] / build / aclocal / ax_cflags_gcc_option.m4

# ===========================================================================
#          http://autoconf-archive.cryp.to/ax_cflags_gcc_option.html
# ===========================================================================
#
# SYNOPSIS
#
#   AX_CFLAGS_GCC_OPTION (optionflag [,[shellvar][,[A][,[NA]]])
#
# DESCRIPTION
#
#   AX_CFLAGS_GCC_OPTION(-fvomit-frame) would show a message as like
#   "checking CFLAGS for gcc -fvomit-frame ... yes" and adds the optionflag
#   to CFLAGS if it is understood. You can override the shellvar-default of
#   CFLAGS of course. The order of arguments stems from the explicit macros
#   like AX_CFLAGS_WARN_ALL.
#
#   The cousin AX_CXXFLAGS_GCC_OPTION would check for an option to add to
#   CXXFLAGS - and it uses the autoconf setup for C++ instead of C (since it
#   is possible to use different compilers for C and C++).
#
#   The macro is a lot simpler than any special AX_CFLAGS_* macro (or
#   ac_cxx_rtti.m4 macro) but allows to check for arbitrary options.
#   However, if you use this macro in a few places, it would be great if you
#   would make up a new function-macro and submit it to the ac-archive.
#
#     - $1 option-to-check-for : required ("-option" as non-value)
#     - $2 shell-variable-to-add-to : CFLAGS (or CXXFLAGS in the other case)
#     - $3 action-if-found : add value to shellvariable
#     - $4 action-if-not-found : nothing
#
#   Note: in earlier versions, $1-$2 were swapped. We try to detect the
#   situation and accept a $2=~/-/ as being the old option-to-check-for.
#
#   There are other variants that emerged from the original macro variant
#   which did just test an option to be possibly added. However, some
#   compilers accept an option silently, or possibly for just another option
#   that was not intended. Therefore, we have to do a generic test for a
#   compiler family. For gcc we check "-pedantic" being accepted which is
#   also understood by compilers who just want to be compatible with gcc
#   even when not being made from gcc sources.
#
#   See also: AX_CFLAGS_SUN_OPTION, AX_CFLAGS_HPUX_OPTION,
#   AX_CFLAGS_AIX_OPTION, and AX_CFLAGS_IRIX_OPTION.
#
# LAST MODIFICATION
#
#   2008-04-12
#
# COPYLEFT
#
#   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
#
#   This program is free software; you can redistribute it and/or modify it
#   under the terms of the GNU General Public License as published by the
#   Free Software Foundation; either version 2 of the License, or (at your
#   option) any later version.
#
#   This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#
#   As a special exception, the respective Autoconf Macro's copyright owner
#   gives unlimited permission to copy, distribute and modify the configure
#   scripts that are the output of Autoconf when processing the Macro. You
#   need not follow the terms of the GNU General Public License when using
#   or distributing such scripts, even though portions of the text of the
#   Macro appear in them. The GNU General Public License (GPL) does govern
#   all other use of the material that constitutes the Autoconf Macro.
#
#   This special exception to the GPL applies to versions of the Autoconf
#   Macro released by the Autoconf Macro Archive. When you make and
#   distribute a modified version of the Autoconf Macro, you may extend this
#   special exception to the GPL to apply to your modified version as well.

AC_DEFUN([AX_CFLAGS_GCC_OPTION_OLD], [dnl
AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_gcc_option_$2])dnl
AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
VAR,[VAR="no, unknown"
 AC_LANG_SAVE
 AC_LANG_C
 ac_save_[]FLAGS="$[]FLAGS"
for ac_arg dnl
in "-pedantic -Werror % m4_ifval($2,$2,-option)"  dnl   GCC
   "-pedantic % m4_ifval($2,$2,-option) %% no, obsolete"  dnl new GCC
   #
do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
   AC_TRY_COMPILE([],[return 0;],
   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
done
 FLAGS="$ac_save_[]FLAGS"
 AC_LANG_RESTORE
])
case ".$VAR" in
     .ok|.ok,*) m4_ifvaln($3,$3) ;;
   .|.no|.no,*) m4_ifvaln($4,$4) ;;
   *) m4_ifvaln($3,$3,[
   if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
   then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
   else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
   fi ]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
AS_VAR_POPDEF([FLAGS])dnl
])


dnl the only difference - the LANG selection... and the default FLAGS

AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_OLD], [dnl
AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_gcc_option_$2])dnl
AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
VAR,[VAR="no, unknown"
 AC_LANG_SAVE
 AC_LANG_CPLUSPLUS
 ac_save_[]FLAGS="$[]FLAGS"
for ac_arg dnl
in "-pedantic -Werror % m4_ifval($2,$2,-option)"  dnl   GCC
   "-pedantic % m4_ifval($2,$2,-option) %% no, obsolete"  dnl new GCC
   #
do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
   AC_TRY_COMPILE([],[return 0;],
   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
done
 FLAGS="$ac_save_[]FLAGS"
 AC_LANG_RESTORE
])
case ".$VAR" in
     .ok|.ok,*) m4_ifvaln($3,$3) ;;
   .|.no|.no,*) m4_ifvaln($4,$4) ;;
   *) m4_ifvaln($3,$3,[
   if echo " $[]m4_ifval($1,$1,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
   then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
   else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
                      m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
   fi ]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
AS_VAR_POPDEF([FLAGS])dnl
])

dnl -------------------------------------------------------------------------

AC_DEFUN([AX_CFLAGS_GCC_OPTION_NEW], [dnl
AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_gcc_option_$1])dnl
AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
VAR,[VAR="no, unknown"
 AC_LANG_SAVE
 AC_LANG_C
 ac_save_[]FLAGS="$[]FLAGS"
for ac_arg dnl
in "-pedantic -Werror % m4_ifval($1,$1,-option)"  dnl   GCC
   "-pedantic % m4_ifval($1,$1,-option) %% no, obsolete"  dnl new GCC
   #
do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
   AC_TRY_COMPILE([],[return 0;],
   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
done
 FLAGS="$ac_save_[]FLAGS"
 AC_LANG_RESTORE
])
case ".$VAR" in
     .ok|.ok,*) m4_ifvaln($3,$3) ;;
   .|.no|.no,*) m4_ifvaln($4,$4) ;;
   *) m4_ifvaln($3,$3,[
   if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
   then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
   else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
                      m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
   fi ]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
AS_VAR_POPDEF([FLAGS])dnl
])


dnl the only difference - the LANG selection... and the default FLAGS

AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_NEW], [dnl
AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_gcc_option_$1])dnl
AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
VAR,[VAR="no, unknown"
 AC_LANG_SAVE
 AC_LANG_CPLUSPLUS
 ac_save_[]FLAGS="$[]FLAGS"
for ac_arg dnl
in "-pedantic -Werror % m4_ifval($1,$1,-option)"  dnl   GCC
   "-pedantic % m4_ifval($1,$1,-option) %% no, obsolete"  dnl new GCC
   #
do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg | sed -e 's,%%.*,,' -e 's,%,,'`
   AC_TRY_COMPILE([],[return 0;],
   [VAR=`echo $ac_arg | sed -e 's,.*% *,,'` ; break])
done
 FLAGS="$ac_save_[]FLAGS"
 AC_LANG_RESTORE
])
case ".$VAR" in
     .ok|.ok,*) m4_ifvaln($3,$3) ;;
   .|.no|.no,*) m4_ifvaln($4,$4) ;;
   *) m4_ifvaln($3,$3,[
   if echo " $[]m4_ifval($2,$2,FLAGS) " | grep " $VAR " 2>&1 >/dev/null
   then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
   else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
                      m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
   fi ]) ;;
esac
AS_VAR_POPDEF([VAR])dnl
AS_VAR_POPDEF([FLAGS])dnl
])

AC_DEFUN([AX_CFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
[AX_CFLAGS_GCC_OPTION_NEW($@)],[AX_CFLAGS_GCC_OPTION_OLD($@)])])

AC_DEFUN([AX_CXXFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
[AX_CXXFLAGS_GCC_OPTION_NEW($@)],[AX_CXXFLAGS_GCC_OPTION_OLD($@)])])
Commit	Line	Data
41148443 VZ	1	# ===========================================================================
	2	# http://autoconf-archive.cryp.to/ax_cflags_gcc_option.html
	3	# ===========================================================================
	4	#
	5	# SYNOPSIS
	6	#
	7	# AX_CFLAGS_GCC_OPTION (optionflag [,[shellvar][,[A][,[NA]]])
	8	#
	9	# DESCRIPTION
	10	#
	11	# AX_CFLAGS_GCC_OPTION(-fvomit-frame) would show a message as like
	12	# "checking CFLAGS for gcc -fvomit-frame ... yes" and adds the optionflag
	13	# to CFLAGS if it is understood. You can override the shellvar-default of
	14	# CFLAGS of course. The order of arguments stems from the explicit macros
	15	# like AX_CFLAGS_WARN_ALL.
	16	#
	17	# The cousin AX_CXXFLAGS_GCC_OPTION would check for an option to add to
	18	# CXXFLAGS - and it uses the autoconf setup for C++ instead of C (since it
	19	# is possible to use different compilers for C and C++).
	20	#
	21	# The macro is a lot simpler than any special AX_CFLAGS_* macro (or
	22	# ac_cxx_rtti.m4 macro) but allows to check for arbitrary options.
	23	# However, if you use this macro in a few places, it would be great if you
	24	# would make up a new function-macro and submit it to the ac-archive.
	25	#
	26	# - $1 option-to-check-for : required ("-option" as non-value)
	27	# - $2 shell-variable-to-add-to : CFLAGS (or CXXFLAGS in the other case)
	28	# - $3 action-if-found : add value to shellvariable
	29	# - $4 action-if-not-found : nothing
	30	#
	31	# Note: in earlier versions, $1-$2 were swapped. We try to detect the
	32	# situation and accept a $2=~/-/ as being the old option-to-check-for.
	33	#
	34	# There are other variants that emerged from the original macro variant
	35	# which did just test an option to be possibly added. However, some
	36	# compilers accept an option silently, or possibly for just another option
	37	# that was not intended. Therefore, we have to do a generic test for a
	38	# compiler family. For gcc we check "-pedantic" being accepted which is
	39	# also understood by compilers who just want to be compatible with gcc
	40	# even when not being made from gcc sources.
	41	#
	42	# See also: AX_CFLAGS_SUN_OPTION, AX_CFLAGS_HPUX_OPTION,
	43	# AX_CFLAGS_AIX_OPTION, and AX_CFLAGS_IRIX_OPTION.
	44	#
	45	# LAST MODIFICATION
	46	#
	47	# 2008-04-12
	48	#
	49	# COPYLEFT
	50	#
	51	# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
	52	#
	53	# This program is free software; you can redistribute it and/or modify it
	54	# under the terms of the GNU General Public License as published by the
	55	# Free Software Foundation; either version 2 of the License, or (at your
	56	# option) any later version.
	57	#
	58	# This program is distributed in the hope that it will be useful, but
	59	# WITHOUT ANY WARRANTY; without even the implied warranty of
	60	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
	61	# Public License for more details.
	62	#
	63	# You should have received a copy of the GNU General Public License along
	64	# with this program. If not, see <http://www.gnu.org/licenses/>.
65	#
66	# As a special exception, the respective Autoconf Macro's copyright owner
67	# gives unlimited permission to copy, distribute and modify the configure
68	# scripts that are the output of Autoconf when processing the Macro. You
69	# need not follow the terms of the GNU General Public License when using
70	# or distributing such scripts, even though portions of the text of the
71	# Macro appear in them. The GNU General Public License (GPL) does govern
72	# all other use of the material that constitutes the Autoconf Macro.
73	#
74	# This special exception to the GPL applies to versions of the Autoconf
75	# Macro released by the Autoconf Macro Archive. When you make and
76	# distribute a modified version of the Autoconf Macro, you may extend this
77	# special exception to the GPL to apply to your modified version as well.
78
79	AC_DEFUN([AX_CFLAGS_GCC_OPTION_OLD], [dnl
80	AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
81	AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_gcc_option_$2])dnl
82	AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
83	VAR,[VAR="no, unknown"
84	AC_LANG_SAVE
85	AC_LANG_C
86	ac_save_[]FLAGS="$[]FLAGS"
87	for ac_arg dnl
88	in "-pedantic -Werror % m4_ifval($2,$2,-option)" dnl GCC
89	"-pedantic % m4_ifval($2,$2,-option) %% no, obsolete" dnl new GCC
90	#
91	do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg \| sed -e 's,%%.*,,' -e 's,%,,'`
92	AC_TRY_COMPILE([],[return 0;],
93	[VAR=`echo $ac_arg \| sed -e 's,.% ,,'` ; break])
94	done
95	FLAGS="$ac_save_[]FLAGS"
96	AC_LANG_RESTORE
97	])
98	case ".$VAR" in
99	.ok\|.ok,*) m4_ifvaln($3,$3) ;;
100	.\|.no\|.no,*) m4_ifvaln($4,$4) ;;
101	*) m4_ifvaln($3,$3,[
102	if echo " $[]m4_ifval($1,$1,FLAGS) " \| grep " $VAR " 2>&1 >/dev/null
103	then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
104	else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
105	m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
106	fi ]) ;;
107	esac
108	AS_VAR_POPDEF([VAR])dnl
109	AS_VAR_POPDEF([FLAGS])dnl
110	])
111
112
113	dnl the only difference - the LANG selection... and the default FLAGS
114
115	AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_OLD], [dnl
116	AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
117	AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_gcc_option_$2])dnl
118	AC_CACHE_CHECK([m4_ifval($1,$1,FLAGS) for gcc m4_ifval($2,$2,-option)],
119	VAR,[VAR="no, unknown"
120	AC_LANG_SAVE
121	AC_LANG_CPLUSPLUS
122	ac_save_[]FLAGS="$[]FLAGS"
123	for ac_arg dnl
124	in "-pedantic -Werror % m4_ifval($2,$2,-option)" dnl GCC
125	"-pedantic % m4_ifval($2,$2,-option) %% no, obsolete" dnl new GCC
126	#
127	do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg \| sed -e 's,%%.*,,' -e 's,%,,'`
128	AC_TRY_COMPILE([],[return 0;],
129	[VAR=`echo $ac_arg \| sed -e 's,.% ,,'` ; break])
130	done
131	FLAGS="$ac_save_[]FLAGS"
132	AC_LANG_RESTORE
133	])
134	case ".$VAR" in
135	.ok\|.ok,*) m4_ifvaln($3,$3) ;;
136	.\|.no\|.no,*) m4_ifvaln($4,$4) ;;
137	*) m4_ifvaln($3,$3,[
138	if echo " $[]m4_ifval($1,$1,FLAGS) " \| grep " $VAR " 2>&1 >/dev/null
139	then AC_RUN_LOG([: m4_ifval($1,$1,FLAGS) does contain $VAR])
140	else AC_RUN_LOG([: m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"])
141	m4_ifval($1,$1,FLAGS)="$m4_ifval($1,$1,FLAGS) $VAR"
142	fi ]) ;;
143	esac
144	AS_VAR_POPDEF([VAR])dnl
145	AS_VAR_POPDEF([FLAGS])dnl
146	])
147
148	dnl -------------------------------------------------------------------------
149
150	AC_DEFUN([AX_CFLAGS_GCC_OPTION_NEW], [dnl
151	AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
152	AS_VAR_PUSHDEF([VAR],[ac_cv_cflags_gcc_option_$1])dnl
153	AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
154	VAR,[VAR="no, unknown"
155	AC_LANG_SAVE
156	AC_LANG_C
157	ac_save_[]FLAGS="$[]FLAGS"
158	for ac_arg dnl
159	in "-pedantic -Werror % m4_ifval($1,$1,-option)" dnl GCC
160	"-pedantic % m4_ifval($1,$1,-option) %% no, obsolete" dnl new GCC
161	#
162	do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg \| sed -e 's,%%.*,,' -e 's,%,,'`
163	AC_TRY_COMPILE([],[return 0;],
164	[VAR=`echo $ac_arg \| sed -e 's,.% ,,'` ; break])
165	done
166	FLAGS="$ac_save_[]FLAGS"
167	AC_LANG_RESTORE
168	])
169	case ".$VAR" in
170	.ok\|.ok,*) m4_ifvaln($3,$3) ;;
171	.\|.no\|.no,*) m4_ifvaln($4,$4) ;;
172	*) m4_ifvaln($3,$3,[
173	if echo " $[]m4_ifval($2,$2,FLAGS) " \| grep " $VAR " 2>&1 >/dev/null
174	then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
175	else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
176	m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
177	fi ]) ;;
178	esac
179	AS_VAR_POPDEF([VAR])dnl
180	AS_VAR_POPDEF([FLAGS])dnl
181	])
182
183
184	dnl the only difference - the LANG selection... and the default FLAGS
185
186	AC_DEFUN([AX_CXXFLAGS_GCC_OPTION_NEW], [dnl
187	AS_VAR_PUSHDEF([FLAGS],[CXXFLAGS])dnl
188	AS_VAR_PUSHDEF([VAR],[ac_cv_cxxflags_gcc_option_$1])dnl
189	AC_CACHE_CHECK([m4_ifval($2,$2,FLAGS) for gcc m4_ifval($1,$1,-option)],
190	VAR,[VAR="no, unknown"
191	AC_LANG_SAVE
192	AC_LANG_CPLUSPLUS
193	ac_save_[]FLAGS="$[]FLAGS"
194	for ac_arg dnl
195	in "-pedantic -Werror % m4_ifval($1,$1,-option)" dnl GCC
196	"-pedantic % m4_ifval($1,$1,-option) %% no, obsolete" dnl new GCC
197	#
198	do FLAGS="$ac_save_[]FLAGS "`echo $ac_arg \| sed -e 's,%%.*,,' -e 's,%,,'`
199	AC_TRY_COMPILE([],[return 0;],
200	[VAR=`echo $ac_arg \| sed -e 's,.% ,,'` ; break])
201	done
202	FLAGS="$ac_save_[]FLAGS"
203	AC_LANG_RESTORE
204	])
205	case ".$VAR" in
206	.ok\|.ok,*) m4_ifvaln($3,$3) ;;
207	.\|.no\|.no,*) m4_ifvaln($4,$4) ;;
208	*) m4_ifvaln($3,$3,[
209	if echo " $[]m4_ifval($2,$2,FLAGS) " \| grep " $VAR " 2>&1 >/dev/null
210	then AC_RUN_LOG([: m4_ifval($2,$2,FLAGS) does contain $VAR])
211	else AC_RUN_LOG([: m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"])
212	m4_ifval($2,$2,FLAGS)="$m4_ifval($2,$2,FLAGS) $VAR"
213	fi ]) ;;
214	esac
215	AS_VAR_POPDEF([VAR])dnl
216	AS_VAR_POPDEF([FLAGS])dnl
217	])
218
219	AC_DEFUN([AX_CFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
220	[AX_CFLAGS_GCC_OPTION_NEW($@)],[AX_CFLAGS_GCC_OPTION_OLD($@)])])
221
222	AC_DEFUN([AX_CXXFLAGS_GCC_OPTION],[ifelse(m4_bregexp([$2],[-]),-1,
223	[AX_CXXFLAGS_GCC_OPTION_NEW($@)],[AX_CXXFLAGS_GCC_OPTION_OLD($@)])])