Hello, today I updated a CentOS 7.6 ppc64le machine to CentOS 7.7. After reboot to the new kernel (4.18.0-80.7.2.el7.ppc64le) dkms could not build the nvidia-module. Error-message from dkms: Compiler version check failed: The major and minor number of the compiler used to compile the kernel: gcc version 8.3.1 20190311 (Red Hat 8.3.1-3) (GCC) does not match the compiler used here: cc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39) Output of /proc/version with new kernel running is: Linux version 4.18.0-80.7.2.el7.ppc64le (mockbuild at ppc64le-01.bsys.centos.org) (gcc version 8.3.1 20190311 (Red Hat 8.3.1-3) (GCC)) #1 SMP Thu Sep 12 15:45:05 UTC 2019 Problem seams to be: The kernel was compiled with gcc-version 8.3.1 and installed is gcc 4.8.5. All previous kernels were compiled with gcc 4.8.5. See: #cat /usr/src/kernels/*/include/generated/compile.h |grep LINUX_COMPILER define LINUX_COMPILER "gcc version 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC)" define LINUX_COMPILER "gcc version 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC)" define LINUX_COMPILER "gcc version 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC)" define LINUX_COMPILER "gcc version 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC)" define LINUX_COMPILER "gcc version 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC)" define LINUX_COMPILER "gcc version 8.3.1 20190311 (Red Hat 8.3.1-3) (GCC)" define LINUX_COMPILER "gcc version 8.3.1 20190311 (Red Hat 8.3.1-3) (GCC)" Any comments? Best regards, Ralf