It's not just gcc that has mismatching versions. It's the whole toolchain. The installed gcc package (according to dpkg) has version 4:5.3.1-1ubuntu1 while the /usr/bin/gcc symlink contained within is pointing to gcc-5.4.0. There is no trace of 5.3.1 binaries on the system, nor are there any available from the repos.
The bug will affect anyone who try to compile and/or link any kernel modules. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to dkms in Ubuntu. https://bugs.launchpad.net/bugs/1608753 Title: Cannot build nvidia driver via dkms because compiler doesn't match kernel Status in dkms package in Ubuntu: Confirmed Bug description: The kernel installed with 16.04 was built with gcc 5.3.1, but the default compiler installed is 5.4.0 - as such, DKMS refuses to build the nvidia video card driver due to the mismatch. Either build the kernel with the shipping compiler or ship the compiler that was used to build the kernel. cat /proc/version Linux version 4.4.0-34-lowlatency (buildd@lgw01-20) (gcc version 5.3.1 20160413 (Ubuntu 5.3.1-14ubuntu2.1) ) #53-Ubuntu SMP PREEMPT Wed Jul 27 19:23:26 UTC 2016 gcc --version gcc (Ubuntu 5.4.0-6ubuntu1~16.04.1) 5.4.0 20160609 lsb_release -rd Description: Ubuntu 16.04.1 LTS Release: 16.04 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: dkms 2.2.0.3-2ubuntu11.1 ProcVersionSignature: Ubuntu 4.4.0-34.53-lowlatency 4.4.15 Uname: Linux 4.4.0-34-lowlatency x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 Date: Mon Aug 1 21:26:15 2016 PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: dkms UpgradeStatus: Upgraded to xenial on 2016-07-23 (9 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dkms/+bug/1608753/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
