Then I can compile without any error messages, but
when I run a flow graph to test the block, it
turns out an error message like this:
Traceback (most recent
call last):
File
"/home/van-ly/sandbox/gnuradio-builds/Test/top_block.py",
line 15, in <module>
import PNC4TWRN
File
"/opt/gnuradio-3.7.3/lib/python2.7/dist-packages/PNC4TWRN/__init__.py",
line 45, in <module>
from PNC4TWRN_swig
import *
File
"/opt/gnuradio-3.7.3/lib/python2.7/dist-packages/PNC4TWRN/PNC4TWRN_swig.py",
line 28, in <module>
_PNC4TWRN_swig =
swig_import_helper()
File
"/opt/gnuradio-3.7.3/lib/python2.7/dist-packages/PNC4TWRN/PNC4TWRN_swig.py",
line 24, in swig_import_helper
_mod =
imp.load_module('_PNC4TWRN_swig', fp, pathname,
description)
ImportError:
/opt/gnuradio-3.7.3/lib/libgnuradio-PNC4TWRN.so:
undefined symbol: _ZN2gr3fft11fft_complexC1Eibi