ImportError: libgnuradio-foo.so: cannot open shared object file: No such file or directory

Hello G.s

I am trying to implement 802.15.4. I had taken the files from this
website GitHub - bastibl/gr-ieee802-15-4: IEEE 802.15.4 ZigBee Transceiver.

My error was ImportError: libgnuradio-foo.so: cannot open shared object
file: No such file or directory

I had tried sudo ldconfig too but I am receiving the same error.

I am completely new for GNU radio. So, I think you guys could help me to
solve the problem.

Eagerly waiting for your replies

FOR MORE DETAILS:

I am using Ubuntu 14.04 and installed all the libraries required for GNU
and successfully tested some examples using USRP.

My output was:

File “/home/krishna/.grc_gnuradio/ieee802_15_4_phy.py”, line 15, in

import foo
File “/usr/local/lib/python2.7/dist-packages/foo/init.py”, line
45, in
from foo_swig import *
File “/usr/local/lib/python2.7/dist-packages/foo/foo_swig.py”, line
28, in
_foo_swig = swig_import_helper()
File “/usr/local/lib/python2.7/dist-packages/foo/foo_swig.py”, line
24, in swig_import_helper
_mod = imp.load_module(‘_foo_swig’, fp, pathname, description)
ImportError: libgnuradio-foo.so: cannot open shared object file: No such
file or directory