+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking bison for %code{}" >&5
+$as_echo_n "checking bison for %code{}... " >&6; }
+echo '%code{}%%_:' >conftest.y
+if $BISON conftest.y -o/dev/null 2>/dev/null; then
+
+ for element in Bison24; do
+ haveit=
+ for x in $CY_FILTERS; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X$element"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ CY_FILTERS="${CY_FILTERS}${CY_FILTERS:+ }$element"
+ fi
+ done
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+
+ for element in Bison23; do
+ haveit=
+ for x in $CY_FILTERS; do
+
+ acl_save_prefix="$prefix"
+ prefix="$acl_final_prefix"
+ acl_save_exec_prefix="$exec_prefix"
+ exec_prefix="$acl_final_exec_prefix"
+ eval x=\"$x\"
+ exec_prefix="$acl_save_exec_prefix"
+ prefix="$acl_save_prefix"
+
+ if test "X$x" = "X$element"; then
+ haveit=yes
+ break
+ fi
+ done
+ if test -z "$haveit"; then
+ CY_FILTERS="${CY_FILTERS}${CY_FILTERS:+ }$element"
+ fi
+ done
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+rm -f conftest.y
+
+