message: cmake: allow extra compile options for tests
diff: @@ -1111,6 +1111,8 @@ macro(__ocv_parse_test_sources tests_type)
  unset(__currentvar)
  endmacro()
  +ocv_check_environment_variables(OPENCV_TEST_EXTRA_CXX_FLAGS_Release)
  +
  # this is a command for adding OpenCV performance tests to the module
  # ocv_add_perf_tests(<extra_dependencies>)
  function(ocv_add_perf_tests)
  @@ -1257,6 +1259,10 @@ function(ocv_add_accuracy_tests)
  _ocv_add_precompiled_headers(${the_target})
  endif()
  + if(OPENCV_TEST_EXTRA_CXX_FLAGS_Release)
  + target_compile_options(${the_target} PRIVATE "$<$<CONFIG:Release>:${OPENCV_TEST_EXTRA_CXX_FLAGS_Release}>")
  + endif()
  +
  ocv_add_test_from_target("${the_target}" "Accuracy" "${the_target}")
  else(OCV_DEPENDENCIES_FOUND)
  # TODO: warn about unsatisfied dependencies
  