+for cf_add_cflags in $cf_xopen_source
+do
+
+cf_tmp_cflag=`echo "x$cf_add_cflags" | sed -e 's/^.//' -e 's/=.*//'`
+cf_old_cflag="$CFLAGS"
+
+case "$CFLAGS" in
+(*$cf_add_cflags=*)
+ cf_old_cflag=`echo "x$cf_old_cflag" | sed -e 's/^.//' -e "s%$cf_tmp_cflag=[^ ]*%%g"`
+ ;;
+(*$cf_add_cflags\ *)
+ cf_old_cflag=`echo "x$cf_old_cflag" | sed -e 's/^.//' -e "s%${cf_tmp_cflag}.%%"`
+ ;;
+(*$cf_add_cflags)
+ cf_old_cflag=`echo "x$cf_old_cflag" | sed -e 's/^.//' -e "s%$cf_tmp_cflag%%"`
+ ;;
+esac
+
+if test "$CFLAGS" != "$cf_old_cflag" ;
+then
+ test -n "$verbose" && echo " removing old option $cf_add_cflags from CFLAGS" 1>&6
+
+echo "${as_me:-configure}:13850: testing removing old option $cf_add_cflags from CFLAGS ..." 1>&5
+
+ CFLAGS="$cf_new_cflag"
+fi
+
+cf_tmp_cflag=`echo "x$cf_add_cflags" | sed -e 's/^.//' -e 's/=.*//'`
+cf_old_cflag="$CPPFLAGS"
+
+case "$CPPFLAGS" in
+(*$cf_add_cflags=*)
+ cf_old_cflag=`echo "x$cf_old_cflag" | sed -e 's/^.//' -e "s%$cf_tmp_cflag=[^ ]*%%g"`
+ ;;
+(*$cf_add_cflags\ *)
+ cf_old_cflag=`echo "x$cf_old_cflag" | sed -e 's/^.//' -e "s%${cf_tmp_cflag}.%%"`
+ ;;
+(*$cf_add_cflags)
+ cf_old_cflag=`echo "x$cf_old_cflag" | sed -e 's/^.//' -e "s%$cf_tmp_cflag%%"`
+ ;;
+esac
+
+if test "$CPPFLAGS" != "$cf_old_cflag" ;
+then
+ test -n "$verbose" && echo " removing old option $cf_add_cflags from CPPFLAGS" 1>&6
+
+echo "${as_me:-configure}:13874: testing removing old option $cf_add_cflags from CPPFLAGS ..." 1>&5
+
+ CPPFLAGS="$cf_new_cflag"
+fi
+
+done
+