I'll try my best with it! The ES port of Irrlicht currently only uses GLES 1.1 so it's fairly limited although Minetest should be somewhat straightforward to port since (according to the website) it doesn't use shaders.

I compiled the library, I just need to see if a test application runs. The Quake3 map example (see here) seems to load initially but fails to load the graphics and crashes so perhaps I need to edit the engine source and try again.