I just found tried building the ubuntu kernel according to the instructions on the wiki (https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel).
Unfortunatly, I got a wget error during the build process. However the fix was easy enough (https://askubuntu.com/questions/1195953/compiling-kernel-fails-during-dkms-build-downloading-zfs-with-error-404-not). I missed a dependency and just needed to
sudo apt-get install gawk
Who should update the package list on the information in the Ubuntu BuildYourOwnKernel wiki page ? I don’t have the permissions to edit the page.