cyrus-sasl errors: SQL engine 'mysql' not supported

Hi, I was wondering if I could get a little help with
troubleshooting/configuring the cyrus-sasl package for fc4 to build
properly with mysql support
http://ftp.freshrpms.net/pub/fedora/linux/core/4/SRPMS/cyrus-sasl-2.1.20-5.src.rpm

I get lines like this in /var/log/messages
Nov 12 11:39:41 myhost saslpasswd2: SQL engine 'mysql' not supported

when I put the following in /usr/lib/sasl2/smtpd.conf

pwcheck_method: auxprop
auxprop_plugin: sql
sql_engine: mysql
sql_hostnames: localhost:3306
sql_user: postfix
sql_passwd: happydappy
sql_database: postfix
sql_select: select %p from users where username = '%u' and realm = '%r'
sql_insert: insert into users set username = '%u', realm = '%r',  %p =
'%v'
sql_update: update users set %p = '%v' where username = '%u' and realm =
'%r'

Thanks.
-- 
Jeff Orrok
LXVI Internet Services LLC