Thank you Ron,
I got it.
Best Regards,
Van-Ly
Van-Ly Nguyen,
Research Assistant,
Signals and Systems Laboratory - SSL
Faculty of Electronics and Telecommunications - FET
University of Engineering and Technology - UET
Vietnam National University, Hanoi - VNU
Phone: (+84) 97 881 9406
On Wed, May 20, 2015 at 10:31 AM, Ron Economos <w...@comcast.net> wrote:
> You have to add FFT to the top level CMakeLists.txt file. Like so:
>
> set(GR_REQUIRED_COMPONENTS RUNTIME FFT)
>
> Ron
>
>
> On 05/19/2015 07:56 PM, Nguyễn Văn Lý wrote:
>
> Hi all,
>
> I created an out-of-tree module for my personal project.
> In one block, I need to perform FFT and IFFF, so I put "*#include
> <gnuradio/fft/fft.h>*" in the header file, and then declare *fft::fft_complex
> *d_ifft;*
> In the .cc file, I wrote *d_ifft = new fft::fft_complex(64, false,
> 1);*
> 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
>
>
> Could any one please help me with this?
> Does any one know how to use the perform FFT in an out-of-tree module?
>
> Thank you in advance,
> Van-Ly
>
>
> Van-Ly Nguyen,
> Research Assistant,
> Signals and Systems Laboratory - SSL
> Faculty of Electronics and Telecommunications - FET
> University of Engineering and Technology - UET
> Vietnam National University, Hanoi - VNU
>
> Phone: (+84) 97 881 9406
>
>
>
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