ftbfs during kernel build due to dkms changes in lunar

Bug #2015279 reported by Dimitri John Ledkov
This bug affects 3 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
v4l2loopback (Ubuntu)
Fix Released

Bug Description

ftbfs during kernel build due to dkms changes in lunar

need to revert explicit use of CC= variable, which is now no longer guaranteed to be exported once again.

causes src:linux to FTBFS


dkms in jammy and lunar are incompatible with each other, prevent kernel from using dkms during its buildtime to prebuild certain dkms modules. Workaround it by including a fixed copy of dkms script in the kernel, as used at build-time only to produce certain pre-built modules.

description: updated
Changed in v4l2loopback (Ubuntu):
milestone: none → ubuntu-23.04
Revision history for this message
Dimitri John Ledkov (xnox) wrote :

possibly dkms regression, testing a fix in the kernel.

tags: added: block-proposed
tags: added: block-proposed-lunar
removed: block-proposed
description: updated
Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Missing required logs.

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 2015279

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
tags: removed: block-proposed-lunar
Changed in v4l2loopback (Ubuntu):
status: New → Fix Committed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package v4l2loopback - 0.12.7-2ubuntu3

v4l2loopback (0.12.7-2ubuntu3) lunar; urgency=medium

  * Revert to 0.12.7-2ubuntu1, as dkms that unconditionaly exports CC has
    been reverted. Otherwise, currently src:linux FTBFS when trying to
    vendor in this module. LP: #2015279

 -- Dimitri John Ledkov <email address hidden> Tue, 04 Apr 2023 17:41:18 +0100

Changed in v4l2loopback (Ubuntu):
status: Fix Committed → Fix Released
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