if(NOT (OPENCV_DNN_OPENCL AND HAVE_OPENCL))
  message(STATUS "opencv_dnn: filter out ocl4dnn source code")
  ocv_list_filterout(OPENCV_MODULE_${the_module}_SOURCES "/ocl4dnn/")
  ocv_list_filterout(OPENCV_MODULE_${the_module}_HEADERS "/ocl4dnn/")
endif()

if(NOT (OPENCV_DNN_CUDA AND HAVE_CUDA AND HAVE_CUBLAS AND HAVE_CUDNN))
  message(STATUS "opencv_dnn: filter out cuda4dnn source code")
  ocv_list_filterout(OPENCV_MODULE_${the_module}_SOURCES "/cuda4dnn/")
  ocv_list_filterout(OPENCV_MODULE_${the_module}_HEADERS "/cuda4dnn/")
endif()