depends -sub CXX gcc && depends zlib && depends libtommath "--with-system-tommath" && optional_depends bzip2 "--enable-bzip2" \ "--disable-bzip2" \ "for bzip2 support" && optional_depends dazukofs "--enable-clamuko" \ "--disable-clamuko" \ "for on access scanning" && optional_depends gmp "--enable-dsig" \ "--disable-dsig" \ "for digital signature support" && optional_depends SYSTEM-LOGGER "" "" "to log activity"