Good news. The Xenial instructions will be very simple, assuming we trust a PPA for db4.8. I've actually used that PPA in the past to install bitcoin core. It's kind of funny how all the bitcoin related PPAs say you shouldn't trust them.

Once I installed that along with all the other dependencies, I just did
./autogen.sh
./configure --with-pic

and it compiled fine with built in gcc 5.4. There were plenty of warnings, but it compiled and is syncing now. Used qt4 although I'm curious if qt5 will work.

What do you think of using the PPA? I'm thinking keep it as simple as possible as not every linux user has experience compiling lots of stuff. Anyone who is paranoid enough and knows how to compile can follow the raw documentation in the docs directory and compile their own version of db4.8.

Time for bed. Tomorrow, I attempt to take apart these two ancient Lenovo laptops I got off ebay and try to flash libreboot on them with a beaglebone black. After that, maybe I'll attempt a Dockerfile for running a node, unless one exists already. I watched multiple docker training courses recently and haven't gotten a chance to apply that knowledge yet. Oh, and finishing that public node is easy enough, I should at least get to that soon.