--- include/dos_inc.h.old 2011-04-28 08:46:04.505011354 +0200 +++ include/dos_inc.h 2011-04-28 08:46:27.104408178 +0200 @@ -21,6 +21,7 @@ #ifndef DOSBOX_DOS_INC_H #define DOSBOX_DOS_INC_H +#include <cstddef> #ifndef DOSBOX_DOS_SYSTEM_H #include "dos_system.h" #endif