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Re: [Discuss-gnuradio] GNU Radio & GSL
From: |
Josh Blum |
Subject: |
Re: [Discuss-gnuradio] GNU Radio & GSL |
Date: |
Thu, 15 Nov 2012 19:21:15 -0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121028 Thunderbird/16.0.2 |
On 11/14/2012 01:59 PM, Zing Yu wrote:
> Below link might be helpful to you:
> http://www.ruby-forum.com/topic/4407135#new
>
>
gr-wavelet is a good example for this as well.
-josh
>
> ________________________________
> From: Adriana Arteaga <address@hidden>
> To: "address@hidden" <address@hidden>
> Sent: Wednesday, November 14, 2012 3:56 PM
> Subject: [Discuss-gnuradio] GNU Radio & GSL
>
>
>
> Hi!
>
> I'm trying to do a block for GRC, using some functions availables in GSL.
> First, I put a example within work function including "#include
> <gsl/gsl_sf_bessel.h>"
>
> ***************
> int
> ocupacion_correlator::general_work (int noutput_items,
> gr_vector_int &ninput_items,
> gr_vector_const_void_star &input_items,
> gr_vector_void_star &output_items)
> {
> const float *in = (const float *) input_items[0];
> float *out = (float *) output_items[0];
> float x = 5.0;
> float y = gsl_sf_bessel_J0 (x);
> printf ("J0(%g) = %.18e\n", x, y);
> out[0]=y;
> out[1]=x;
>
> // Tell runtime system how many input items we consumed on
> // each input stream.
> consume_each (noutput_items);
>
> // Tell runtime system how many output items we produced.
> return noutput_items;
> }
> ***************
>
> During the exection of cmake, make and make install, I didn't have any
> problem. But, when I execute the flow graph in GRC this error appears:
>
> ****************
> Traceback (most recent call last):
> File "/home/xuan/Documents/GRC
> generados/probando_correlator_gsl/top_block.py", line 14, in <module>
> import ocupacion
> File "/usr/local/lib/python2.7/dist-packages/ocupacion/__init__.py", line
> 45, in <module>
> from ocupacion_swig import *
> File "/usr/local/lib/python2.7/dist-packages/ocupacion/ocupacion_swig.py",
> line 26, in <module>
> _ocupacion_swig = swig_import_helper()
> File "/usr/local/lib/python2.7/dist-packages/ocupacion/ocupacion_swig.py",
> line 22, in swig_import_helper
> _mod = imp.load_module('_ocupacion_swig', fp, pathname, description)
> ImportError: /usr/local/lib/libgnuradio-ocupacion.so: undefined symbol:
> gsl_sf_bessel_J0
> ****************
>
> I think I have to make some change on Makefile or a PATH, but I don't know
> how. I installed gsl-bin and libgsl0ldbl packets.
>
> Best Regards.
>
> Adriana A.
>
>
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