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Re: [Discuss-gnuradio] New Block execution error

From: André Selva
Subject: Re: [Discuss-gnuradio] New Block execution error
Date: Thu, 1 Mar 2012 13:20:28 -0300

I'm using autotools. And I checked many times, and all the Makefiles are updated correctly with the new block's information.

One strange point is that even if I delete all the references from the block from all the Makefiles, the problem still persist.


2012/2/29 Tom Rondeau <address@hidden>
On Wed, Feb 29, 2012 at 5:26 PM, André Selva <address@hidden> wrote:

I develop a new block to my own library (called gr_my_divisorcamadas_ff) . The compilation runs successfully, but when I execute a flow graph with any block from the library, I got the following message:

Traceback (most recent call last):
  File "/home/rt-dsp/Desktop/Howtowrite/gr-my-basic/top_block.py", line 14, in <module>
    import gr_my
  File "/usr/local/lib/python2.7/dist-packages/gr_my/__init__.py", line 40, in <module>
    from gr_my_swig import *
  File "/usr/local/lib/python2.7/dist-packages/gr_my/gr_my_swig.py", line 24, in <module>
    _gr_my_swig = swig_import_helper()
  File "/usr/local/lib/python2.7/dist-packages/gr_my/gr_my_swig.py", line 20, in swig_import_helper
    _mod = imp.load_module('_gr_my_swig', fp, pathname, description)
ImportError: /usr/local/lib/libgnuradio-gr_my-3.3.0.so.0: undefined symbol: _ZTV23gr_my_divisorcamadas_ff

Even if I delete the reference from the new block in all make files and re-compile the library, the error still persist.

Any ideas?

Best Regards,
André F. B. Selva -

We're going to need more information. Are you using cmake or autotools (Makefile.am) to do this? Are you sure you're editing the .cc, .h, and .i files, AND are you making sure that the relevant files in your build system are updated with the correct information?

The error just sounds like you haven't gotten all of the files updated correctly.


André F. B. Selva -
SECOMP - Semana da Computação da Unicamp 2012
Coordenador Geral
CACo - Centro Acadêmico da Computação

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