optional_depends gnutls \
                 "--with-gnutls" \
                 "--without-gnutls" \
                 "for SSL/TLS support" &&
#optional_depends ident \
#                 "--with-ident" \
#                 "--without-ident" \
#                 "for including support for IDENT lookups" &&
optional_depends linux-pam \
                 "--with-pam" \
                 "--without-pam" \
                 "for PAM Authentication" &&
optional_depends SSL \
                 "--with-openssl" \
                 "--without-openssl" \
                 "for SSL/TLS support" &&
optional_depends SYSTEM-LOGGER \
                 "--with-syslog" \
                 "--without-syslog" \
                 "for logging to syslog" &&
optional_depends tcp_wrappers \
                 "--with-tcp-wrappers" \
                 "--without-tcp-wrappers" \
                 "for tcp_wrappers access control support" &&
optional_depends zlib \
                 "--with-zlib" \
                 "--without-zlib" \
                 "for compressed server-server links"
