Problem when building a RFNoC FFT image

Hi everyone,

I’m using Ubuntu 20.04,, UHD 4.2.0 and GNU Radio 3.8. I’m using also an USRP X310 for RFNoC development but I’m getting problems when I’m creating the FFT block. Once I’ve changed all the Verilog files, all the .yml and all the controllers, I see that the files named fft_impl.cc and fft_impl.h, which are the GNU Radio block C++ code, are not provided in UHD. As I don’t have them, I use te default blocks that rfnocmodtool provides by default. After I use make in the build directory I get the next error:

[ 6%] Building CXX object lib/CMakeFiles/gnuradio-bloquefft.dir/fft_impl.cc.o

In file included from /home/benito.paramo/rfnoc/src/rfnoc-bloquefft/lib/fft_impl.cc:26:

/home/benito.paramo/rfnoc/src/rfnoc-bloquefft/lib/fft_impl.h:47:5: error: expected class-name before ‘{’ token

47 | {

| ^

/home/benito.paramo/rfnoc/src/rfnoc-bloquefft/lib/fft_impl.cc:29:10: error: ‘sptr’ in namespace ‘gr::fft’ does not name a type

29 | fft::sptr

| ^~~~

/home/benito.paramo/rfnoc/src/rfnoc-bloquefft/lib/fft_impl.cc: In constructor ‘gr::bloquefft::fft_impl::fft_impl(uhd::rfnoc::noc_block_base::sptr)’:

/home/benito.paramo/rfnoc/src/rfnoc-bloquefft/lib/fft_impl.cc:48:11: error: ‘gr::ettus’ has not been declared

48 | gr::ettus::rfnoc_block(block_ref),

| ^~~~~

/home/benito.paramo/rfnoc/src/rfnoc-bloquefft/lib/fft_impl.cc:48:18: error: expected ‘{’ before ‘rfnoc_block’

48 | gr::ettus::rfnoc_block(block_ref),

| ^~~~~~~~~~~

/home/benito.paramo/rfnoc/src/rfnoc-bloquefft/lib/fft_impl.cc: At global scope:

/home/benito.paramo/rfnoc/src/rfnoc-bloquefft/lib/fft_impl.cc:48:29: error: expected constructor, destructor, or type conversion before ‘(’ token

48 | gr::ettus::rfnoc_block(block_ref),

Anyone had a similar result and could resolve it? Or I just don’t have a file that is necessary?

Thank you everyone

Benito

From:	Benito Paramo
Subject:	Problem when building a RFNoC FFT image
Date:	Thu, 17 Feb 2022 09:03:04 +0000