Re: [Discuss-gnuradio] Help with building a VHF-UHF SDR application on Debian Jessie (using Gnuradio 3.7.10)

[Adrian Musceac]

Hi Cinaed,
Thanks for your prompt response and the qt4 clarification. I will settle for 
qt4 now as building gnuradio against qt5 would be too much effort.
But the header issue still stands, it looks like the include path is wrong, at 
least on Debian. I don't know if this is just a Debian package issue or whether 
it belongs here.

Cheers,
Adrian

On 19 June 2017 22:28:24 GMT+01:00, Cinaed Simson <address@hidden> wrote:
>On 06/19/2017 01:05 PM, Adrian Musceac wrote:
>> Hi fellow Debian hams and Gnuradio experts,
>> 
>> I am currently trying to build a SDR experimental application based
>on
>> Gnuradio for digital voice and data communications in the amateur
>radio
>> VHF-UHF bands [1][2]. I am using Gnuradio 3.7.10 on Debian GNU/Linux
>> from jessie-backports. I ran into some problems which I will describe
>> below and which may be solved with your kind help.
>
>You need
>
>  apt-get install gnuradio-dev
>
>
>> 
>> 1. Trying to build gnuradio-qtgui support in, I encountered these
>errors:
>> g++ -c -pipe -O2 -D_REENTRANT -Wall -W -DQT_WEBKIT -DQT_NO_DEBUG
>> -DQT_SQL_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED
>> -I/usr/share/qt4/mkspecs/linux-g++ -I../../qradiolink_mobile
>> -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtNetwork
>> -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtSql -I/usr/include/qt4
>-I.
>> -I. -I../../qradiolink_mobile -I. -o dtmfcommand.o ../dtmfcommand.cpp
>> In file included from /usr/include/gnuradio/qtgui/number_sink.h:32:0,
>>                  from ../gr/gr_demod_bpsk_sdr.h:27,
>>                  from ../gr/gr_modem.h:38,
>>                  from ../radioop.h:39,
>>                  from ../main.cpp:41:
>> /usr/include/gnuradio/qtgui/qtgui_types.h:26:27: fatal error:
>> qwt_color_map.h: No such file or directory
>>  #include <qwt_color_map.h>
>>   
>
>First, there is no application called gnuradio-qtgui - it's a gnuradio
>module or library, namely,
>
>  libgnuradio-qtgui-3.7.11.so.0
>
>And yes, gnuradio needs to qt4 to build.
>
>Make sure you have
>
>  apt-get install libqwt-dev
>  apt-get install python-qwt5-qt4
>
>> compilation terminated.
>> 
>> It seems as if the relevant header from gnuradio references the wrong
>> path of QWT. I can make it build by editing the headers to provide
>the
>> QWT directory:
>> #include <qwt/qwt_color_map.h>
>> #include <qwt/qwt_scale_draw.h>
>> 
>> It may be that this is relevant only to Debian packages from
>> Jessie-backports, or it may be a larger issue.
>> 
>> 2. When trying to build the application using QT 5.3 as provided by
>> Debian, it links fine, but the application segfaults when running.
>The
>> build works fine with QT 4.8, which makes me think that
>gnuradio-qtgui
>> in Debian does not support QT5. Would be great to clear this. I can
>> provide backtraces if required.
>
>Correct - gnuradio currently needs qt4 to build. But Debian already
>built gnuradio for you.
>
>Note, there are gnuradio applications - like gqrx or inspectrum which
>need qt5 installed - which isn't a problem because they're linking to
>the gnuradio libraries and providing their own gni software - and not
>linking to libgnuradio-qtgui.
>
>Check to see if
>
>  gnuradio-companion
>
>works.
>
>You'll have the choice of either using WX or QT widgets - QT is
>recommended since WX will be removed in the next major release.
>
>-- Cinaed
>
>
>> 
>> With thanks for the wonderful packages your communities are
>providing,
>> Adrian (YO8RZZ)
>> 
>> [1] https://github.com/kantooon/qradiolink
>> [2] https://www.youtube.com/watch?v=93nWWASt5a4
>> 
>> 
>> 
>> 
>> 
>> 
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>> 
>
>
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