C++SYCL_FPGA/ReferenceDesigns/mvdr_beamforming compilation error with REAL_IO_PIPES

[umairsiddiqui-digitek]

when i try to compile with "REAL_IO_PIPES", i get following compilation error :

$ cmake .. -DIS_BSP=1 -DREAL_IO_PIPES=1 -DFPGA_DEVICE=/home/cicd_srv/oneapi-asp/n6001:ofs_n6001_usm_iopipes 
....
$ make fpga
Consolidate compiler generated dependencies of target mvdr_beamforming.fpga
[ 50%] Building CXX object src/CMakeFiles/mvdr_beamforming.fpga.dir/mvdr_beamforming.cpp.o
/home/cicd_srv/oneAPI-samples/DirectProgramming/C++SYCL_FPGA/ReferenceDesigns/mvdr_beamforming/src/mvdr_beamforming.cpp:390:5: error: use of undeclared identifier 'produce_dma_event'
  390 |     produce_dma_event.wait();
      |     ^
1 error generated.
make[3]: *** [src/CMakeFiles/mvdr_beamforming.fpga.dir/build.make:76: src/CMakeFiles/mvdr_beamforming.fpga.dir/mvdr_beamforming.cpp.o] Error 1
make[2]: *** [CMakeFiles/Makefile2:186: src/CMakeFiles/mvdr_beamforming.fpga.dir/all] Error 2
make[1]: *** [CMakeFiles/Makefile2:141: src/CMakeFiles/fpga.dir/rule] Error 2
make: *** [Makefile:137: fpga] Error 2

https://github.com/oneapi-src/oneAPI-samples/blob/cf10750d70299d3b9765541be4673623ac9704f9/DirectProgramming/C%2B%2BSYCL_FPGA/ReferenceDesigns/mvdr_beamforming/src/mvdr_beamforming.cpp#L390