I’ve wrote a qt-build plugin for telegram which I actually should publish in some other repo which allows you to do multiple builds both with static and shared libraries.
See https://github.com/3v1n0/telegram-snap/blob/master/snap/plugins/x-qtbuilder.py
For an help in how to use it you can refer to the relative snapcraft.yaml of the very same repo.
I’ve other examples in this gist too: https://gist.github.com/3v1n0/0008e78d3903222baa8ba1379f8eba00