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 <adriarteag...@hotmail.com> > To: "discuss-gnuradio@gnu.org" <discuss-gnuradio@gnu.org> > 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. > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio