message: suppress warning while building the samples
diff: #include <iomanip>
  #include <stdexcept>
  +#define CL_USE_DEPRECATED_OPENCL_1_1_APIS
  +#define CL_USE_DEPRECATED_OPENCL_1_2_APIS
  #define CL_USE_DEPRECATED_OPENCL_2_0_APIS // eliminate build warning
  #ifdef __APPLE__
  