After have been hunting the forum high and low actually managed to run the openxcom extended+ executable on linux!
So please go to the Meridian builds page
hereAnd than install SDL libs provided in the repositories
sudo apt install --no-install-recommends libsdl1.2debian libsdl-gfx1.2 libsdl-image1.2 libsdl-mixer1.2
Worked in Ubuntu 16.04, so yaml libs seems to be non necessary, unless you want to make anotehr and/or a custom build (it's used to compile the ececutable)
Hope this may help
Edit: better always use the --no-install-recommends parameter