Re: '*****' has not been declared

[Marcus Müller]

Hi Nik,




#include <gnuradio/digital/constellation.h>

in your header.



Best regards,
Marcus




On 25.07.22 12:14, Beckmann, Niklas wrote:

if you use names from a different header file, you'll need to include that header, otherwise your compiler can't know what that name means! In this case, you need to include the header that defines gr::digital::constellation and gr::digital::constellation_sptr. That would be done by (note: that's a bit of a basic C++ thing, you need to declare the things you use in each compilation unit *before* you use them.) PS: kind of surprising to pass in both a shared pointer to a constellation object, and to pass-by-value (i.e., make a copy) another constellation object. Hope that makes sense!

Dear members of the gnuradio mailing list,


since 2 days I am trying to fix this error. So maybe one of you guys can help 
me...

I am grateful for any help.


I have the following code, which is the impl.h file of a block from my oot 
module.


#ifndef INCLUDED_FLORIANINETS_BASEBAND_DEROTATION2_IMPL_H
#define INCLUDED_FLORIANINETS_BASEBAND_DEROTATION2_IMPL_H

#include <gnuradio/FlorianiNets/baseband_derotation2.h>

namespace gr {
namespace FlorianiNets {

class baseband_derotation2_impl : public baseband_derotation2
{
private:
     float f_mu;
     float f_error;
     gr::digital::constellation_sptr;
     gr::digital::c_constellation;
     float wrap_phase(float phi);

public:
     baseband_derotation2_impl(float mu,
                               gr::digital::constellation_sptr,
                               gr::digital::constellation);
     ~baseband_derotation2_impl();

     // Where all the action really happens
     int work(int noutput_items,
              gr_vector_const_void_star& input_items,
              gr_vector_void_star& output_items);
};

} // namespace FlorianiNets
} // namespace gr

#endif /* INCLUDED_FLORIANINETS_BASEBAND_DEROTATION2_IMPL_H */

When I run make, I get this error list, and I simply don't know why:

In file included from 
/home/niklas/gr-FlorianiNets/lib/baseband_derotation2_impl.h:11,
                  from 
/home/niklas/gr-FlorianiNets/lib/baseband_derotation2_impl.cc:8:

    36 |     make(float mu, gr::digital::constellation_sptr, 
gr::digital::constellation);
       |                        ^~~~~~~

    36 |     make(float mu, gr::digital::constellation_sptr, 
gr::digital::constellation);
       |                                                         ^~~~~~~
In file included from 
/home/niklas/gr-FlorianiNets/lib/baseband_derotation2_impl.cc:8:

    21 |         gr::digital::constellation_sptr;
       |             ^~~~~~~

    22 |         gr::digital::c_constellation;
       |             ^~~~~~~

    27 |                               gr::digital::constellation_sptr,
       |                                   ^~~~~~~

    28 |                               gr::digital::constellation);
       |                                   ^~~~~~~



I tried everything, what I know to fix this, but I did not manage to do so.
Maybe someone else has a good advice.

Thank you very much,
Nik

/home/niklas/gr-FlorianiNets/lib/../include/gnuradio/FlorianiNets/baseband_derotation2.h:36:24: error: ‘gr::digital’ has not been declared /home/niklas/gr-FlorianiNets/lib/../include/gnuradio/FlorianiNets/baseband_derotation2.h:36:57: error: ‘gr::digital’ has not been declared /home/niklas/gr-FlorianiNets/lib/baseband_derotation2_impl.h:21:13: error: ‘digital’ in namespace ‘gr’ does not name a type /home/niklas/gr-FlorianiNets/lib/baseband_derotation2_impl.h:22:13: error: ‘digital’ in namespace ‘gr’ does not name a type /home/niklas/gr-FlorianiNets/lib/baseband_derotation2_impl.h:27:35: error: ‘gr::digital’ has not been declared /home/niklas/gr-FlorianiNets/lib/baseband_derotation2_impl.h:28:35: error: ‘gr::digital’ has not been declared

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