Thanks Harm van Tilborg > The usage daemon uses libev, so you should install the libev development > headers.
> In Debian/Ubuntu they're called libev3-dev. I'm not familiar with CentOS > to know how to do this there, but I think this should help you out. I had installed libev-3.9 via tarball. I did this cd /var/src tar -xzf tar/libev-3.9.tar.gz cd libev-3.9 ./configure make make install !DSPAM:4c20c1e432711917115304!