First of all apologies if I've missed something blazingly obvious.. I recently purchased GLBasic on Steam and would like to know how to get Mac OS, Linux and Raspberry Pi etc to appear in the Build Multiplatform list on the Compiler menu. I have an older trial version of GLBasic installed on my old PC and all the other platforms are just there.
I have discovered 'Platforms' on the Web menu in the application and downloaded the Mac zip file and unzipped it, so I think I'm on the right track but what do I do with it next (if in fact I'm doing the right thing =D ).