Centos Linux ia3 2.6.18-194.32.1.el5 #1 SMP Wed Jan 5 17:53:09 EST 2011 i686 i686 i386 GNU/Linux.
I would suggest you ask the CentOS maintainers. The OpenLDAP project does not provide pre-compiled binaries, and thus has no knowledge of what random options various distributions use.
--Quanah -- Quanah Gibson-Mount Sr. Member of Technical Staff Zimbra, Inc A Division of VMware, Inc. -------------------- Zimbra :: the leader in open source messaging and collaboration