optional_depends tcp_wrappers \
                 "--with-tcpwrappers" \
                 "--without-tcpwrappers" \
                 "to use tcp wrapper library for performance reasons (if kernel-based firewalling is unavailable)" &&

optional_depends readline \
                 "--with-readline" \
                 "--without-readline" \
                 "for use of readline command-line editing in tftp client"
