crypt?
      ( >=app-crypt/gpgme-0.9.0 )

dbm?
      ( sys-libs/gdbm )

guile?
      ( >=dev-scheme/guile-1.6 )

mysql?
      ( virtual/mysql )

pam?
      ( virtual/pam )

postgres?
      ( virtual/postgresql-server )

nls?
      ( sys-devel/gettext )

pcre?
      ( >=dev-libs/libpcre-3.9 )

sasl?
      ( virtual/gsasl )

ssl?
      ( >=dev-libs/openssl-0.9.6 )

tcpd?
      ( >=sys-apps/tcp-wrappers-7.6 )