On Wed Dec 13 19:54:54 2017, ondrej wrote:
> Or we can use pkg-config like it's 2017...
> 
> $ pkg-config --libs zlib
> -lz
> $ pkg-config --cflags zlib
> $

Which doesn't exist in the MacOS.

Now if you install macports (and presumably home-brew) it does but that doesn't give you the native instance.