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

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

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
Web: http://www.techworks.ie/



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