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

[Lukas Haase]

Hi Cinaed,

*I* am the author of gr-petro ;-)
This is indeed a SWIG question. Or a question about OOT modules.

I created the module with gr_modtool. I inserted bunch of blocks with "add"
command. Just this one below does not work. I have no idea why (and it drives
me crazy).

Hence my questions:
- What could be the issue?
- What exactly generates *swigPYTHON_wrap.cxx files ?
- How are the argument lists for the functions determined? 

Thanks,
Lukas


> 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
>
>> 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_swigPYTHO 
>> N_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_swigPYTHO 
>> N_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