Re: [Discuss-gnuradio] Porting cgran AIS to the new cmake build system

[Darren Long]

Hi Chris,

Might I be so bold to suggest that in your efforts, you consider using
the gr-osmosdr abstraction (http://sdr.osmocom.org/trac/wiki/GrOsmoSDR)
so that the RTL-SDR could be used too. In fact it supports  UHD, FCD and
RTL-SDR, and works well in gqrx for example.

Sorry for being cheeky :P

Darren

On 17/07/12 22:43, Christian Gagneraud wrote:
> On 17/07/12 22:24, Nick Foster wrote:
>> Christian,
>>
>> Are you using the version found here?
>>
>> https://github.com/bistromath/gr-ais
>>
>> If not, please use this version, as it is significantly more up-to-date
>> than the one on CGRAN. I'm going to change the CGRAN page to point to
>> the Github repository.
>
> Interesting.
>
> Would you be interested in getting it ported to the new build system?
> If so, I'll redo the work on your tree.
> As well, I realised that ais_received.py is tailored for the USRP.
> I'm currently using a funcube dongle, so I might as well contribute
> with a dedicated script, once i start to get things working.
>
> Chris
>
>
>>
>> --n
>>
>> On Tue, Jul 17, 2012 at 1:42 PM, Christian Gagneraud <address@hidden
>> <mailto:address@hidden>> wrote:
>>
>>     On 17/07/12 21:31, Josh Blum wrote:
>>
>>
>>
>>         On 07/17/2012 01:27 PM, Christian Gagneraud wrote:
>>
>>             Hi,
>>
>>             I tried to build https://cgran.org/wiki/AIS against
>>             gnuradio-3.6, and i
>>             fails.
>>             As 3.6 brings in a new build system, I decided to give it a
>>             go on the
>>             AIS module. I based everything on gr-howto-write-a-block
>>
>>     [...]
>>
>>             ImportError:
>>             /usr/local/lib/python2.7/site-__packages/ais/_ais_swig.so:
>>             undefined symbol: _Z14ais_make_shiftv
>>
>>
>>         Just a guess, but
>>
>>         In gnuradio we explicitly export the library symbols. If you
>>         arent doing
>>         that for libgnuradioais, make sure that the visibility flag is
>>         being set
>>         to default. You can read more here:
>>         http://gcc.gnu.org/wiki/__Visibility
>>         <http://gcc.gnu.org/wiki/Visibility>
>>
>>
>>     Hi Josh,
>>
>>     Actually, I've just discovered this was needed! So, yes that was it.
>>     No it's complaining about usrp stuff, but it's another story. I
>>     don't have a USRP, I'm using a FUNcube dongle.
>>
>>     BTW, should I make this package install in
>>     lib/python2.7/site-packages/__gnuradio/ais instead of
>>     lib/python2.7/site-packages/__ais
>>     Same with the include dir: include/gnuradio/ais instead of
>> include/ais?
>>
>>     I would like to be able to use gnuradio-companion, and pick up the
>>     AIS block from the selection list, but it's not there. This might be
>>     due to the current install dir. Any comment?
>>
>>     Chris
>>
>>
>>
>>
>>
>>         -josh
>>
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>>
>>
>>
>>     --
>>     Christian Gagneraud,
>>     Embedded systems engineer.
>>     Techworks Marine
>>     1 Harbour road
>>     Dun Laoghaire
>>     Co. Dublin
>>     Ireland
>>     Tel: + 353 (0) 1 236 5990 <tel:%2B%20353%20%280%29%201%20236%205990>
>>     Web: http://www.techworks.ie/
>>
>>
>>
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>>
>
>