DKMS make.log for v4l2loopback-0.12.7 for kernel 6.5.0-21-generic (x86_64)
Mon 26 Feb 11:43:02 +04 2024
Building v4l2-loopback driver...
make -C /lib/modules/6.5.0-21-generic/build M=/var/lib/dkms/v4l2loopback/0.12.7/build modules CC=cc
make[1]: Entering directory '/usr/src/linux-headers-6.5.0-21-generic'
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: x86_64-linux-gnu-gcc-12 (Ubuntu 12.3.0-1ubuntu1~22.04) 12.3.0
  You are using:           cc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
  CC [M]  /var/lib/dkms/v4l2loopback/0.12.7/build/v4l2loopback.o
cc: error: unrecognized command-line option ‘-ftrivial-auto-var-init=zero’
make[3]: *** [scripts/Makefile.build:251: /var/lib/dkms/v4l2loopback/0.12.7/build/v4l2loopback.o] Error 1
make[2]: *** [/usr/src/linux-headers-6.5.0-21-generic/Makefile:2039: /var/lib/dkms/v4l2loopback/0.12.7/build] Error 2
make[1]: *** [Makefile:234: __sub-make] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-6.5.0-21-generic'
make: *** [Makefile:43: v4l2loopback.ko] Error 2