message: fix cmake error
diff: @@ -5,15 +5,17 @@ if(WITH_OPENCV)
  LIST(APPEND op_srcs ${ppshitu_tools_srcs})
  LIST(APPEND op_srcs ${ocrtools_srcs})
  else()
  - set (EXCLUDE_DIR "general_detection_op.cpp")
  - set (EXCLUDE_DIR "general_picodet_op.cpp")
  - set (EXCLUDE_DIR "general_feature_extract_op.cpp")
  + LIST(APPEND EXCLUDE_LIST "general_detection_op.cpp")
  + LIST(APPEND EXCLUDE_LIST "general_picodet_op.cpp")
  + LIST(APPEND EXCLUDE_LIST "general_feature_extract_op.cpp")
  foreach (TMP_PATH ${op_srcs})
  + foreach (EXCLUDE_DIR ${EXCLUDE_LIST})
  string (FIND ${TMP_PATH} ${EXCLUDE_DIR} EXCLUDE_DIR_FOUND)
  if (NOT ${EXCLUDE_DIR_FOUND} EQUAL -1)
  list (REMOVE_ITEM op_srcs ${TMP_PATH})
  break()
  endif ()
  + endforeach(EXCLUDE_DIR)
  endforeach(TMP_PATH)
  endif()
  LIST(APPEND serving_srcs ${op_srcs})
  