Do if (HAVE_STDDEF_H) before flagging -include stddef.h on MinGW
Do if (HAVE_STDDEF_H) before flagging -include stddef.h on MinGW

WopsS/sampgdk,Zeex/sampgdk,Zeex/sampgdk,WopsS/sampgdk,WopsS/sampgdk,Zeex/sampgdk