I am trying to install the library files of I2C/SMBUS on Raspberry Pi. I followed the procedure mentioned on this link, https://pypi.python.org/pypi/smbus-cffi/0.5.1.
The files were downloaded and extracted but i am not able to install it. Attached image shows the error message.
Please suggest solution to this and any other alternatives like other libraries available to get me started.
Thanks in advance.