#include #ifndef __SIZE_TYPE__ #define __SIZE_TYPE__ unsigned long #endif typedef __SIZE_TYPE__ size_t; /* There is a GCC macro for a size_t type, but not * for a ssize_t type. Below construct tricks GCC * into making __SIZE_TYPE__ signed. */ #define unsigned signed typedef __SIZE_TYPE__ ssize_t; #undef unsigned #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)