INSTALL % sudo yum install rpm-build redhat-rpm-config % echo '%_topdir /path/to/server50/rpmbuild' > ~/.rpmmacros Source: http://wiki.centos.org/HowTos/SetupRpmBuildEnvironment USAGE # cd ./boxgrinder/ # ./patches/boxgrinder-build server50-6-0.appl -p vmware --platform-config type:personal,thin_disk:true --debug --trace