Hi, it seems on RHEL, no C++-compiler is available, as opposed to other platforms (as CentOS) and other build environments (srpms don't have this dependency explicitly). The needed package is gcc-c++ Is this intentional or a bug? Also, I want to propose a Substitute for fedora: %if 0%{?fedora} Substitute: python3-dnspython python3-dns %endif And last but not least: In the wiki theres a broken link to a centos default-prjconf: https://en.opensuse.org/openSUSE:Build_Service_cross_distribution_howto#Hand... https://build.opensuse.org/project/prjconf?project=CentOS%3ACentOS-6 Sebastian -- python programming - mail server - photo - video - https://sebix.at cryptographic key at https://sebix.at/DC9B463B.asc and on public keyservers