I have been working with the 'old' makehuman for a while, and am trying to get the newest possible version to run. However, whenever I try to compile the mh_phoenix folder (with compile_src.sh or Makefile.Linux) I get a lot of errors about a lot of things being undeclared. I have no programming experience so I have no idea how to fix this either

I installed a lot of SDL opengl libraries, and that seems to have fixed it. I'm not sure exactly which ones I needed, but makehuman compiles now.
Thanks,
Kai