Ok looking how to compile it.
So far I’ve narrowed down that I need csound64.dll in C:/Program Files/Csound6_x64/bin/csound64.dll.
It probably should already reside in the plugin and be dynamically loaded.
Do I have to set up an environment path to csound.hpp?
Guessing it should be in the build paths
C:/Program Files/Csound6_x64/include/csound/