optional_depends libtool \
                 "--without-included-ltdl" \
                 "--with-included-ltdl" \
                 "to use system ltdl" &&

optional_depends zlib \
                 "--enable-zlib" \
                 "--disable-zlib" \
                 "for ziplinks support" &&

optional_depends SSL \
                 "--enable-openssl" \
                 "--disable-openssl" \
                 "for OpenSSL support" &&

optional_depends sqlite \
                 "--with-sqlite3=$INSTALL_ROOT/usr" "" \
                 "to use system SQLite3 library" &&

if list_find "$IRCD_RATBOX_OPTS" "--enable-services"; then
  suggest_depends ratbox-services "" "" "to install native services package"
fi
