python --prefix $root/$prefix build install will generate an error as --prefix is not a global option but an option of install and it should be written as this : python build install --prefix $root/$prefix git-svn-id: http://www.rocklinux.org/svn/rock-linux/trunk@1219 c5f82cb5-29bc-0310-9cd0-bff59a50e3bcrocklinux