Forum: GNU Radio Fwd: regarding your paper

112b7626d33291d86eca7588674ac906?d=identicon&s=25 lingeswar kandregula (Guest)
on 2014-05-11 11:18
(Received via mailing list)
hi ,
i have gone through bastin bloessl's code for ieee_802_15_4.  i
installed
it in my ubuntu 12.04 having gnuradio v3.7 . it installed and i got the
following error when i was trying to run the flowgraph.

Traceback (most recent call last):
  File "/home/cps/.grc_gnuradio/ieee802_15_4_phy.py", line 16, in
<module>
    import ieee802_15_4
  File
"/usr/local/lib/python2.7/dist-packages/ieee802_15_4/__init__.py",
line 17, in <module>
    from ieee802_15_4_swig import *
  File
"/usr/local/lib/python2.7/dist-packages/ieee802_15_4/ieee802_15_4_swig.py",
line 26, in <module>
    _ieee802_15_4_swig = swig_import_helper()
  File
"/usr/local/lib/python2.7/dist-packages/ieee802_15_4/ieee802_15_4_swig.py",
line 22, in swig_import_helper
    _mod = imp.load_module('_ieee802_15_4_swig', fp, pathname,
description)
ImportError: /usr/local/lib/libgnuradio-ieee802_15_4.so: undefined
symbol:
_ZN2gr6blocks12count_bits32Ej

 i have no idea what it means. is it the problem with count_bits block.

looking forward for the reply.


thanks,
lingeswar
A778d8812929a4b21baa7fc3b898dd87?d=identicon&s=25 Bastian Bloessl (Guest)
on 2014-05-11 14:27
(Received via mailing list)
Hi Lingeswar,

 >
"/usr/local/lib/python2.7/dist-packages/ieee802_15_4/ieee802_15_4_swig.py",
 > line 22, in swig_import_helper
 >      _mod = imp.load_module('_ieee802_15_4_swig', fp, pathname,
description)
 > ImportError: /usr/local/lib/libgnuradio-ieee802_15_4.so: undefined
 > symbol: _ZN2gr6blocks12count_bits32Ej

I guess libgnuradio-ieee802_15_4.so is not linked against
libgnuradio-blocks.so. You can check that with

ldd libgnuradio-ieee802_15_4.so

Are you using the most recent version of 15.4? Linking should work
latest since this commit

https://github.com/bastibl/gr-ieee802-15-4/commit/...

Best,
Bastian
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