New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/21855#issuecomment-627186530

Comment:
It should come from `dlfcn.h`, which, on musl, doesn't seem to define that type. `/usr/include/python3.8/pyconfig.h` seems to have some tricks for dealing with that, so I guess we can try to think of a patch based on that.

The intel use case for that option is mentioned here as well https://stackoverflow.com/questions/34073051/when-we-are-supposed-to-use-rtld-deepbind#34074587