to compile some apps with diet, I had to add this:
/* from stdio.h */
#define __FILE FILE
/* from sys/cdefs.h */
# define __BEGIN_NAMESPACE_STD
# define __END_NAMESPACE_STD
# define __USING_NAMESPACE_STD(name)
# define __BEGIN_NAMESPACE_C99
# define __END_NAMESPACE_C99
# define __USING_NAMESPACE_C99(name)
# define __attribute_pure__ __attribute__ ((__pure__))
/* from bits/types.h */
typedef char *caddr_t;

typedef unsigned char uchar;
typedef unsigned char u_char;
typedef unsigned short ushort;


maybe this should be part of the dietlibc headers..