Ok so it seems I cant do anything to get it running on my side.
Funny enough that I use the official raspian which I kept up to date
with 'sudo apt-get update'
and now the 'sudo apt-get install that claims to use the newest version
(3.4.2-1+deb10u3) keeps running into such an error.
How to find out who the packet maintainer is?
But hey, I found a crude way around it somehow:
Instead of my 3b+ with 1 gb ram I used my fresh-out-of-the-box PI 4 that
just arrived via mail.
I simply swapped the sdcard (I dont know if that will cause other issues
but it did boot).
Guess what:
It did compile and install flawlessly.
I swapped the cards back and keep ignoring some wierd errors that get
printed on booting but the stuff seems to be running.
I if I had to guess I'd say the thing wont compile on a 1gb thingy
anymore - maybe earlier, smaller versions did?
Do I need to redo all anew on the PI 4 or can I simply use the working
setup of my PI 3b+ and slot that card into the PI 4?
Noob-question i think, but heck I dont know.
Kind regards