The arguments to a macro should not include preprocessor directives, such as #define, #ifdef, and #include. Doing so is undefined behavior, according to section 6.10.3, para. paragraph 11, of the C Standard [ISO/IEC 9899:2011].:
The sequence of preprocessing tokens bounded by the outside-most matching parentheses forms the list of arguments for the function-like macro. The individual arguments within the list are separated by comma preprocessing tokens, but comma preprocessing tokens between matching inner parentheses do not separate arguments. If there are sequences of preprocessing tokens within the list of arguments that would otherwise act as preprocessing directives, the behavior is undefined.
...