[Discuss-gnuradio] Undefined symbol _Z20gr_make_io_signatureiii

[Hsin-mu Tsai]

Hi,

I am trying to run example scripts under
gnuradio/gnuradio-examples/python/digital. All of them failed with
similar error rmessages like the following:


Traceback (most recent call last):
 File "./benchmark_tx.py", line 32, in ?
   from transmit_path import transmit_path
 File 
"/home/hsinmut/src/gnuradio-3.0.3/gnuradio-examples/python/digital/transmit_path.py",
line 22, in ?
   from gnuradio import gr, gru, blks
 File "/usr/local/lib/python2.4/site-packages/gnuradio/blks/__init__.py",
line 37, in ?
   exec "from gnuradio.blksimpl.%s import *" % (f,)
 File "<string>", line 1, in ?
 File "/usr/local/lib/python2.4/site-packages/gnuradio/blksimpl/cvsd.py",
line 24, in ?
   from gnuradio.vocoder import cvsd_vocoder
 File "/usr/local/lib/python2.4/site-packages/gnuradio/vocoder/cvsd_vocoder.py",
line 6, in ?
   import _cvsd_vocoder
ImportError: 
/usr/local/lib/python2.4/site-packages/gnuradio/vocoder/_cvsd_vocoder.so:
undefined symbol: _Z20gr_make_io_signatureiii


However, I was able to run usrp_fft.py, and other scripts in usrp
directory. I'm using gnuradio 3.0.3 release and Fedora Core 6.

I saw similar messages in the mail list a while ago, but it seems that
nobody came up with any idea to fix this problem. What's the cause of
this problem?

Any suggestions would be appreciated. Thanks!

-Michael


--
Hsin-Mu (Michael) Tsai
Ph.D. Student
Electrical and Computer Engineering Department
Carnegie Mellon University