Every time i try to install rpm-build he gives me an unexpected error. Command: yum install rpm-build ERROR: Error: Package: rpm-build-4.9.1.3-6.el6.x86_64 (hhvm) Requires: pkgconfig >= 1:0.24 Installed: 1:pkgconfig-0.23-9.1.el6.x86_64 (@anaconda-CentOS-201311272149.x86_64/6.5) pkgconfig = 1:0.23-9.1.el6 You could try using --skip-broken to work around the problem