kerberos Kerberos 5 implementation from KTH Enable usage of openssl Berkeley DB is preferred before NDBM, but if you for some reason want to use NDBM instead, you can disable this USE flag. Enable/Disable ipv6 support. No magic here. DEPRECATED (because produces circualar dependencies): global USE which enable/disable LDAP as database backend -> see 'hd-ldap' Building X applications Enable pthread support Enable support for one-time passwords (OTP) in some heimdal apps Enable pkinit support to get the initial ticket Enable support for LDAP as database backend (not suggested to use)