Re: SWIG doesn't recognize argument in make()

[Cinaed Simson]

Hi Lukas - gr-petro is a OOT module - an "out of tree "module - it's not 
part of gnuradio.

You need to contact the author of the module.

It's highly unlikely it's a problem with make - it's more likely a 
mismatch between gr-petro and your installed version of gnuradio.

For instance, the OOT was written for a version of gnuradio prior to 3.8.

In any case, I couldn't find the gr-petro source code with a Google 
search so I can't even guess what the problem might be. It also helps to 
state which OS you're using.

-- Cinaed


On 11/16/20 12:51 AM, Lukas Haase wrote:
> Hi everyone,
>
> It's driving me NUTS! SWIG just won't recognize an argument to my make() 
> function and hence build fails. I have other nearly identical blocks in the 
> same module that work without issues.
>
> What exactly generates the *swigPYTHON_wrap.cxx files and how are the argument 
> lists for the functions determined?
>
> Here is how my make fails:
>
> [ 77%] Building CXX object 
> swig/CMakeFiles/petro_swig.dir/CMakeFiles/petro_swig.dir/petro_swigPYTHON_wrap.cxx.o
> /home/petro/src/gr38/gr-petro/build/swig/CMakeFiles/petro_swig.dir/petro_swigPYTHON_wrap.cxx:
>  In function ‘PyObject* _wrap_tx_msg2tag_make(PyObject*, PyObject*)’:
> /home/petro/src/gr38/gr-petro/build/swig/CMakeFiles/petro_swig.dir/petro_swigPYTHON_wrap.cxx:18687:48:
>  error: no matching function for call to ‘gr::petro::tx_msg2tag::make()’
> 18687 |       result = gr::petro::tx_msg2tag::make();
>        |                                                ^
> In file included from 
> /home/petro/src/gr38/gr-petro/build/swig/CMakeFiles/petro_swig.dir/petro_swigPYTHON_wrap.cxx:2881:
> /home/petro/src/gr38/gr-petro/lib/../include/petro/tx_msg2tag.h:48:19: note: 
> candidate: ‘static gr::petro::tx_msg2tag::sptr 
> gr::petro::tx_msg2tag::make(unsigned int)’
>     48 |       static sptr make(unsigned int time_increment_factor);
>        |                   ^~~~
> /home/petro/src/gr38/gr-petro/lib/../include/petro/tx_msg2tag.h:48:19: note:   
> candidate expects 1 argument, 0 provided
> /home/petro/src/gr38/gr-petro/build/swig/CMakeFiles/petro_swig.dir/petro_swigPYTHON_wrap.cxx:
>  In function ‘PyObject* _wrap_tx_msg2tag_sptr_make(PyObject*, PyObject*)’:
> /home/petro/src/gr38/gr-petro/build/swig/CMakeFiles/petro_swig.dir/petro_swigPYTHON_wrap.cxx:18914:30:
>  error: no matching function for call to ‘gr::petro::tx_msg2tag::make()’
> 18914 |       result = (*arg1)->make();
>        |                              ^
> In file included from 
> /home/petro/src/gr38/gr-petro/build/swig/CMakeFiles/petro_swig.dir/petro_swigPYTHON_wrap.cxx:2881:
> /home/petro/src/gr38/gr-petro/lib/../include/petro/tx_msg2tag.h:48:19: note: 
> candidate: ‘static gr::petro::tx_msg2tag::sptr 
> gr::petro::tx_msg2tag::make(unsigned int)’
>     48 |       static sptr make(unsigned int time_increment_factor);
>        |                   ^~~~
> /home/petro/src/gr38/gr-petro/lib/../include/petro/tx_msg2tag.h:48:19: note:   
> candidate expects 1 argument, 0 provided
> make[2]: *** [swig/CMakeFiles/petro_swig.dir/build.make:63: 
> swig/CMakeFiles/petro_swig.dir/CMakeFiles/petro_swig.dir/petro_swigPYTHON_wrap.cxx.o]
>  Error 1
> make[1]: *** [CMakeFiles/Makefile2:466: swig/CMakeFiles/petro_swig.dir/all] 
> Error 2
> make: *** [Makefile:141: all] Error 2
>
>
> As can be very, very clearly seen, tx_msg2tag::make(unsigned int) has ONE 
> parameter (time_increment_factor). Yet SWIG wants to call 
> gr::petro::tx_msg2tag::make().
>
>
> I have tried regenerating the file, deleting build directory and starting from 
> scratch but this error follows me like a nightmare.
>
>
> Thanks for suggestions!
>
> Lukas