The files in this directory are intended only for "generic" systems. If you need to build FreeRADIUS from source on a RedHat system (RHEL, Fedora, or CentOS), please read the following FAQ: http://wiki.freeradius.org/guide/Red_Hat_FAQ It was written by the person who maintains the RedHat FreeRADIUS packages, and contains detailed instructions for creating an RPM from the original RedHat spec files. This ensures that the RPMs on your system closely match the RedHat requirements.