message: dnn:perf add missing definition __OPENCV_TEST to fix pch
diff: @@ -98,6 +98,10 @@ ocv_add_perf_tests(${INF_ENGINE_TARGET}
  FILES Src ${perf_srcs}
  FILES Include ${perf_hdrs}
  )
  +set_property(
  + SOURCE "${CMAKE_CURRENT_LIST_DIR}/test/test_common.cpp"
  + PROPERTY COMPILE_DEFINITIONS "__OPENCV_TESTS=1"
  +)
  ocv_option(${the_module}_PERF_CAFFE "Add performance tests of Caffe framework" OFF)
  ocv_option(${the_module}_PERF_CLCAFFE "Add performance tests of clCaffe framework" OFF)
  