gnomemeeting-0.98.2 config error

[Randy Bush]

checking for ldap.h... no
configure: error: You need OpenLDAP's header files to build GnomeMeeting
===>  Script "configure" failed unexpectedly.
      Please report the problem to roger at FreeBSD.org [maintainer] and attach
      the "/usr/ports/net/gnomemeeting2/work/gnomemeeting-0.98.2/config.log"
      including the output of the failure of your make command. Also, it might
      be a good idea to provide an overview of all packages installed on your
      system (e.g. an `ls /var/db/pkg`).
*** Error code 1