optional_depends pcre \
                 "" "" \
                 "for PCRE tables support" &&

optional_depends db \
                 "" "" \
                 "for hash and btree files support" &&

optional_depends sqlite \
                 "" "" \
                 "for SQLite support" &&

optional_depends MYSQL \
                 "" "" \
                 "for MySQL support" &&

optional_depends postgresql \
                 "" "" \
                 "for PostgreSQL support" &&

optional_depends openldap \
                 "" "" \
                 "for LDAP support" &&

optional_depends linux-pam \
                 "" "" \
                 "for PAM support" &&

optional_depends SSL \
                 "" "" \
                 "for SSL/TLS support" &&

optional_depends dovecot \
                 "" "" \
                 "for SASL authentication via Dovecot" &&

optional_depends cyrus-sasl \
                 "" "" \
                 "for SASL authentication via the Cyrus libraries"
