> Hi there,
> I want tu use my Raspberry Pi 4 as a timeserver. I have a USB Clock from 
> Meinberg and want to compile mbgtools-lx-4.2.8.
> While compiling with make:
> Calling kernel build system to make “modules”
>
> 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 

I'd attempt to install the `kernel-devel` package and trying to compile it 
again. 

It also looks like the latest version (4.2.12) may rectify this as per their 
website which references this error on newer kernels: 
https://kb.meinbergglobal.com/kb/driver_software/driver_software_for_linux/linux_driver_package_-_release_notes#mbgtools-lx-4212

I'd suggest snagging the latest version of the driver & install the 
aforementioned `kernel-devel` package and I believe it should compile cleanly.

-- 
  Cody Robertson
  Chief Technical Officer, Hawk Host Inc.
  [email protected]

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