Re: [Discuss-gnuradio] ‘class uhd::usrp::m ulti_usrp’ has no member named xxx

[Josh Blum]

On 03/26/2012 07:51 PM, Peng Wang wrote:
> I want to implement some functions in uhd::usrp::multi_usrp, and access these 
> functions from gnu_uhd_usrp_source. Therefore, I modify the files as follows:
>  
> 1. multi_usrp.hpp
>     I define the function 
>     virtual void enable_rx_fhop(const bool enb, size_t mboard = 0) = 0;
>  
> 2. multi_usrp.cpp
>     void enable_rx_fhop(const bool enb, size_t mboard)
>     {
>          ...
>     }
>  
>     Then, I go to folder uhd/host/build/ and compile the files. Everything is 
> fine, and no error appears.
>  
> 3. gr_uhd_usrp_source.h
>     define:
>     virtual void enable_rx_fhop_gr(const bool enb, size_t mboard = 0) = 0;
>  
> 4. gr_uhd_usrp_source.cc
>     void enable_rx_fhop_gr(const bool enb, size_t mboard)
>     {
>          _dev->enable_rx_fhop(enb, mboard);
>     }
>  
> When I compile the files, I get the following error message:
>  
> gr_uhd_usrp_source.cc: In member function ‘virtual void 
> uhd_usrp_source_impl::enable_rx_fhop_gr(bool, size_t)’:
> gr_uhd_usrp_source.cc:298: error: ‘class uhd::usrp::multi_usrp’ has no member 
> named ‘enable_rx_fhop’
> make[5]: *** [gr_uhd_usrp_source.lo] Error 1
>  
> As I said, I compiled the UHD successfully, and cannot understand why 
> gr-source cannot find the functions. So, any suggestions? Thanks
>  

Maybe its building against an old header. Did you install multi_usrp.hpp
to the include path?

-josh