New comment by sgn on void-packages repository

https://github.com/void-linux/void-packages/issues/22139#issuecomment-631126707

Comment:
I like this idea, I'll change my PR in that direction.
The variable needs to be change will be `Libs*`, `Cflags`, `LDFLAGS`, `CFLAGS`, `includedir`, `libdir`, `girdir`, `typelibdir`