Re: [Discuss-gnuradio] Newbie problem

[Rick Farina]

Just so the mailing list doesn't feel out of the loop and the archives
have the solution:

We successfully tracked this issue to resolution here:

https://bugs.gentoo.org/show_bug.cgi?id=540658

and merged the fix into gnuradio here:

https://github.com/gnuradio/gnuradio/pull/387/

Thanks,
Zero_Chaos

On 02/18/15 16:13, Mike Markowski wrote:
> I was excited to successfully try an rtl-sdr GRC demo/tutorial and
> decided to start following the gnuradio tutorials to better learn the
> program.  I quickly ran into trouble, so am sure I've done something
> stupid but can't figure out what!  Running through tutorial
> 
>   http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorial_GRC
> 
> and reaching section 2.2.3, 'Generate' goes fine, but not 'Execute':
> 
> 
> Generating: "/home/mm/gnuradio/tutorial_two_1.py"
> 
> Executing: "/home/mm/gnuradio/tutorial_two_1.py"
> 
> Traceback (most recent call last):
>   File "/home/mm/gnuradio/tutorial_two_1.py", line 13, in <module>
>     from gnuradio import qtgui
>   File "/usr/lib/python2.7/site-packages/gnuradio/qtgui/__init__.py",
> line 34, in <module>
>     from qtgui_swig import *
>   File "/usr/lib/python2.7/site-packages/gnuradio/qtgui/qtgui_swig.py",
> line 28, in <module>
>     _qtgui_swig = swig_import_helper()
>   File "/usr/lib/python2.7/site-packages/gnuradio/qtgui/qtgui_swig.py",
> line 24, in swig_import_helper
>     _mod = imp.load_module('_qtgui_swig', fp, pathname, description)
> ImportError: /usr/lib/libgnuradio-qtgui-3.7.6.1.so.0.0.0: undefined
> symbol: _ZN7QwtPlot11eventFilterEP7QObjectP6QEvent
> 
>>>> Done (return code 1)
> 
> The machine I'm on is a gentoo box with gnuradio compiled as follows
> (notice qt4 is specified):
> 
> # emerge -pv gnuradio
> 
> These are the packages that would be merged, in order:
> 
> Calculating dependencies... done!
> [ebuild   R    ] net-wireless/gnuradio-3.7.6.1:0/3.7.6.1::gentoo
> USE="alsa analog audio ctrlport digital doc examples fcd filter grc jack
> oss qt4 sdl utils wavelet wxwidgets -atsc -channels -dtv -fec -log -noaa
> -pager -performance-counters -portaudio {-test} -trellis -uhd -vocoder
> -zeromq" PYTHON_TARGETS="python2_7" 0 KiB
> 
> Total: 1 package (1 reinstall), Size of downloads: 0 KiB
> 
> As I mentioned, all works well with RTL-SDR source, so I assume there is
> a QT problem of some sort?
> 
> Thanks!
> Mike Markowski
> 
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