On Mon, Mar 26, 2012 at 10:42 AM, Francisco <[email protected]>wrote:
> Ben Reynwar <ben <at> reynwar.net> writes: > > > > > I think that the best way to get started is to use Martins gr-modtool. > > It will help you to make out-of-tree blocks (out-of-tree means > > separate but compatible with your main gnuradio installation). > > > > It can be found at: > > https://github.com/mbant/gr-modtool > > > > On Mon, Mar 26, 2012 at 2:58 AM, Ebtisam Ahmed <ebtisamahmed90 <at> > gmail.com> > wrote: > > > Indeed i have read but i cant understand the building process. I built > > > it the i understood but it failed terribly, i have made .h .cc .i and > > > makefile.am. Put them in one folder and then done make. i also tried > > > ./configure and ./bootstrap but it doesnt work > > > > > > Anyways thanx for ur time and help me on this.... > > > > > > Regards, > > > Ebtisam > > > > > > _______________________________________________ > > > Discuss-gnuradio mailing list > > > Discuss-gnuradio <at> gnu.org > > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > Hi all, > > I've decided to follow your suggestion and get gr_modtool.py. > > First I created the module with this script which created some folders, > files > and the .cc and .h files with skeleton code. > > Then I put my code in the .cc and .h files. I also changed the .xml file > so I > can use GRC (I haven't used python yet to create graphs). > > After this, I used cmake. I wrote: > >cmake -i > >sudo make > >sudo make install > >sudo ldconfig > > These were my steps to build a new block to use in GRC. However, I get this > error: > > ImportError: /usr/local/lib/python2.7/dist- > packages/mycoolstuff/_mycoolstuff_swig.so: undefined symbol: > _Z38mycoolstuff_make_decimated_average_vccifi > > Yes. My module and block are called mycoolstuff and > decimated_average_vcc.cc > > It seems that there is a problem with the swig. Do I have to configure > anything > in the .i files before starting to use cmake? > My guess is you haven't declared your functions as API exports. There should be a file in your module called include/mycoolstuff_api.h, which should be #included by your block implementations and the public constructor declared like this: MYCOOLSTUFF_API mycoolstuff_make_decimated_average(.....) {} This will export the symbol so it gets called out in the library. --n > > Regards, > Francisco > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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