Hello Basti, the real error message must be earlier, if you sarch for "Error" (or the German word "Fehler").
Current "master" from the Debian kernel branch builds fine for me. I use the following script on Debian testing (with native as well as cross-compile builds): https://github.com/laroche/arm-devel-infrastructure/blob/master/vmdb2-debian/kernel56.sh A Debain kernel with also all raspbian patches applied can also be compiled with the script and such a compiled kernel can be downloaded from: https://github.com/laroche/arm-devel-infrastructure/releases (Caveat: I only have a RPi3, so this is not tested with Rpi4...) best regards, Florian La Roche

