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
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