Is this an exercise for you? Can't you use multiply_const_ff from GNU Radio?
Your code has some simple C++ errors; I recommend you carefully read the compiler output and reference that to your code. Also, you might want to grab a book on C++. The error message you've posted doesn't give enough info (but this is also the kind of question that's best asked maybe in a C++ forum). Cheers, M On 14.07.2015 07:53, Gabriele Galiero wrote: > I have been trying to build an easy block called mutiply_ff, having an > input parameter int multiple. The block is meant to multiply each > element of the input streams by the parameter multiple. > > I am getting one error when: > > mkdir build > cd build > cmake ../ > make (Here I get ERROR!) > > This is the error: > > [ 5%] Building CXX object > lib/CMakeFiles/gnuradio-gabri.dir/multiply_ff_impl.cc.o > In file included from > /home/comlab/Desktop/Gabri/mimo/gr-gabri/lib/multiply_ff_impl.h:24:0, > from > /home/comlab/Desktop/Gabri/mimo/gr-gabri/lib/multiply_ff_impl.cc:26: > /home/comlab/Desktop/Gabri/mimo/gr-gabri/include/gabri/multiply_ff.h:49:24: > error: ‘multiple’ has not been declared > static sptr make(multiple); > ^ > /home/comlab/Desktop/Gabri/mimo/gr-gabri/lib/multiply_ff_impl.cc:31:23: > error: prototype for ‘gr::gabri::multiply_ff::sptr > gr::gabri::multiply_ff::make(unsigned int)’ does not match any in class > ‘gr::gabri::multiply_ff’ > multiply_ff::sptr multiply_ff::make(unsigned multiple) > ^ > In file included from > /home/comlab/Desktop/Gabri/mimo/gr-gabri/lib/multiply_ff_impl.h:24:0, > from > /home/comlab/Desktop/Gabri/mimo/gr-gabri/lib/multiply_ff_impl.cc:26: > /home/comlab/Desktop/Gabri/mimo/gr-gabri/include/gabri/multiply_ff.h:49:19: > error: candidate is: static gr::gabri::multiply_ff::sptr > gr::gabri::multiply_ff::make(int) > static sptr make(multiple); > ^ > make[2]: *** [lib/CMakeFiles/gnuradio-gabri.dir/multiply_ff_impl.cc.o] > Error 1 > make[1]: *** [lib/CMakeFiles/gnuradio-gabri.dir/all] Error 2 > make: *** [all] Error 2 > > > I attach the lib files where the function is implemented. > Any help or tip is welcome. Thanks in advance. > > Attachments: > http://www.ruby-forum.com/attachment/10912/multiply_ff_impl.cc > http://www.ruby-forum.com/attachment/10913/multiply_ff_impl.h > > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
