- int SerialStream_TxByte(char DataByte, FILE *Stream) ATTR_NON_NULL_PTR_ARG(2);\r
- int SerialStream_RxByte(FILE *Stream) ATTR_NON_NULL_PTR_ARG(1);\r
+ #if defined(INCLUDE_FROM_SERIALSTREAM_C)\r
+ static int SerialStream_TxByte(char DataByte, FILE *Stream) ATTR_NON_NULL_PTR_ARG(2);\r
+ static int SerialStream_RxByte(FILE *Stream) ATTR_NON_NULL_PTR_ARG(1);\r
+ #endif\r