Missing libmmal.so with picamera library

Question

After installing the picamera library using pip, whenever I import the library I get this error:

OSError: libmmal.so: cannot open shared object file: No such fil         


        

Answer 1

On a raspberry, the libmmal.so library should be located at /opt/vc/lib, did you by any chance wipe this folder?

The firmware located in that directory is updated via

sudo rpi-update

If this tells you that you are already at the newest version, you can force an update by prior running

sudo rm /boot/.firmware_version

Please also see my other answer.

Are you running ubuntu 14.04 on your rpi? If not, i think you will have to recompile the libraries from the firmware.