The ModSecurity Log Collector (mlogc) is used to send ModSecurity audit log data to a console or Breach Security appliance. The final packaged release of ModSecurity 2.5.6 did not contain the mlogc source as it should have. This means that a "make mlogc" will fail. However, the mlogc source is also packaged separately and can be downloaded from Breach Labs (https://bsn.breach.com/downloads/mlogc/). Please use the source from Breach Labs to build mlogc until the next release of ModSecurity.