optional_depends libconfig \
                 "USELIBCONFIG=1" \
                 "USELIBCONFIG=" \
                 "for configuration file support" &&

optional_depends tcp_wrappers \
                 "USELIBWRAP=1" \
                 "USELIBWRAP=" \
                 "for reporting and access control" &&

optional_depends pcre \
                 "USELIBPCRE=1" \
                 "USELIBPCRE=" \
                 "for PCRE engine support" &&

optional_depends libcap \
                 "USELIBCAP=1" \
                 "USELIBCAP=" \
                 "for dropping privileges, keep only CAP_NET_ADMIN"
