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