Installation problem on OpenSUSE (tumbleweed and 15.2)

Hi I’ve got problems to install the kernel driver modules, during the make process.

On tumbleweed, the main error message appears to be:

/usr/src/linux-5.8.4-1/Makefile:959: scripts/Makefile.kcsan: No such file or directory
make[2]: *** No rule to make target 'scripts/Makefile.kcsan'.  Stop.
make[1]: *** [Makefile:185: __sub-make] Error 2
make: *** [Makefile:81: modules] Error 2

Similar bug on 15.2.
It appears that all the files are there in the build tree and that some subtle parts of the makefile mechanism are broken.

Now also on the opensuse bugzilla:

Ok, nothing to do with the driver or the kernel, I had MAKEFLAGS=-e in my environment which killed the logic of the kernel build tools… See also over at the opensuse bugzilla: