For older distribution you can still use SDL1.2
./build.sh ... --sdl12 ...
or
cmake ... -DSDL2_API=FALSE ...
Note: there is a hard dependency between WxWidget and SDL. If Wx is linked against
SDL1.2, you must use SDL1.2. Crashes are expected otherwise.
Sadly, no time to maintain it neither to improve it.
Note: I think new openGL 4.x feature would make the plugin faster
Anyway, now GSdx-ogl is probably better than zzogl