I've been trying to install the pyephem module on my Raspberry Pi 3. It says:
"No such file or directory: cdefs.h"
I tried installing it with both 'sudo pip install pyephem' and 'sudo pip3 install pyephem'
I have no idea on how to fix this. Can someone help me? I'm not sure if this is the right place to post this question, if it's not, please let me know where to post it.