Kernel config using distribution config as a starting point

The typical target system for using this approach is a desktop or server Linux system.

Moving along, this second approach is also quick:

cp /boot/config-5.0.0-36-generic ${LLKD_KSRC}/.config

Here, we simply copy the existing Linux distribution's (here, it's our Ubuntu 18.04.3 LTS guest VM) config file into the .config file in the root of the kernel source tree, of course, thereby making the distribution config the starting point, which can then be further edited (a more generic command: cp /boot/config-$(uname -r) ${LLKD_KSRC}/.config).