Yes, I read it but I wasn’t able to understand the problem and forgot to add it here:
[luigi@Luigi-pc ~]$ cat /var/lib/dkms/v4l2loopback-dc/1.6/build/make.log
DKMS make.log for v4l2loopback-dc-1.6 for kernel 5.10.0-1-MANJARO (x86_64)
Sun Dec 20 15:14:19 CET 2020
make: pwd: No such file or directory
make -C /lib/modules/5.10.0-1-MANJARO/build M= modules
make: make: No such file or directory
make: *** [Makefile:8: all] Error 127
[luigi@Luigi-pc ~]$ cat /var/lib/dkms/vboxhost/6.1.16_OSE/build/make.log
DKMS make.log for vboxhost-6.1.16_OSE for kernel 5.10.0-1-MANJARO (x86_64)
Sun Dec 20 15:14:18 CET 2020
make: Entering directory '/usr/lib/modules/5.10.0-1-MANJARO/build'
make: uname: No such file or directory
make: gcc: No such file or directory
ERROR: Kernel configuration is invalid.
include/generated/autoconf.h or include/config/auto.conf are missing.
Run 'make oldconfig && make prepare' on kernel src to fix it.
make: *** [Makefile:720: include/config/auto.conf] Error 1
make: Leaving directory '/usr/lib/modules/5.10.0-1-MANJARO/build'
[luigi@Luigi-pc ~]$ cat /var/lib/dkms/zenpower/0.1.12/build/make.log
DKMS make.log for zenpower-0.1.12 for kernel 5.10.0-1-MANJARO (x86_64)
Sun Dec 20 15:14:20 CET 2020
make: uname: No such file or directory
make: make: No such file or directory
make: *** [Makefile:27: modules] Error 127
[luigi@Luigi-pc ~]$ cat /var/lib/dkms/rtl8723bu/245/build/make.log
DKMS make.log for rtl8723bu-245 for kernel 5.10.0-1-MANJARO (x86_64)
Sun Dec 20 15:14:19 CET 2020
make: Entering directory '/usr/lib/modules/5.10.0-1-MANJARO/build'
make: uname: No such file or directory
make: gcc: No such file or directory
ERROR: Kernel configuration is invalid.
include/generated/autoconf.h or include/config/auto.conf are missing.
Run 'make oldconfig && make prepare' on kernel src to fix it.
make: *** [Makefile:720: include/config/auto.conf] Error 1
make: Leaving directory '/usr/lib/modules/5.10.0-1-MANJARO/build'
[luigi@Luigi-pc ~]$ /var/lib/dkms/i2c-piix4-aura/5.6.11/build/make.log
bash: /var/lib/dkms/i2c-piix4-aura/5.6.11/build/make.log: Permission denied
[luigi@Luigi-pc ~]$ cat /var/lib/dkms/i2c-piix4-aura/5.6.11/build/make.log
DKMS make.log for i2c-piix4-aura-5.6.11 for kernel 5.10.0-1-MANJARO (x86_64)
Sun Dec 20 15:14:20 CET 2020
make: pwd: No such file or directory
make -C /usr/lib/modules/5.10.0-1-MANJARO/build M= modules
make: make: No such file or directory
make: *** [Makefile:15: default] Error 127
[luigi@Luigi-pc ~]$ cat /var/lib/dkms/i2c-ch341/20190628/build/make.log
DKMS make.log for i2c-ch341-20190628 for kernel 5.10.0-1-MANJARO (x86_64)
Sun Dec 20 15:14:17 CET 2020
make: Entering directory '/usr/lib/modules/5.10.0-1-MANJARO/build'
make: uname: No such file or directory
make: gcc: No such file or directory
SYNC include/config/auto.conf.cmd
make[1]: uname: No such file or directory
make[1]: make: No such file or directory
make[1]: *** [Makefile:537: scripts_basic] Error 127
make: *** [Makefile:712: include/config/auto.conf.cmd] Error 2
make: *** [include/config/auto.conf.cmd] Deleting file 'include/generated/autoconf.h'
make: Leaving directory '/usr/lib/modules/5.10.0-1-MANJARO/build'
The recurrent error seems to be “no such file or directory”