GNU Radio Companion (GRC) fails to execute

I installed GNU Radio from here
(http://code.ettus.com/redmine/ettus/projects/uhd/wiki/GNURadio_Linux)

Now when I execute a simple flowgraph, the GRC fails to execute and
gives the following error:

Traceback (most recent call last):
File “/home/meer/Desktop/top_block.py”, line 8, in
from gnuradio import analog
File
“/usr/local/lib/python2.7/dist-packages/gnuradio/analog/init.py”,
line 33, in
from analog_swig import *
File
“/usr/local/lib/python2.7/dist-packages/gnuradio/analog/analog_swig.py”,
line 26, in
_analog_swig = swig_import_helper()
File
“/usr/local/lib/python2.7/dist-packages/gnuradio/analog/analog_swig.py”,
line 22, in swig_import_helper
_mod = imp.load_module(’_analog_swig’, fp, pathname, description)
ImportError: libfftw3f.so.3: cannot open shared object file: No such
file or directory

I’ve tried a few basic ways like ldconfig but so far none has worked.
Also, i’m new to linux so any help will be much appreciated

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