Compiling on Ubuntu 18 LTS.

This file: https://github.com/tutor-web/smileyCoin/blob/master/configure.ac
says to use BDB 4.8,

but when I look here:
https://github.com/tutor-web/smileyCoin/blob/master/configure.ac
I see a lot of stuff about BDB 5.

What to do?

Which is the Windows wallet compiled using?