You have to add to
clib/MD5.h


# include <stdint.h>
typedef uint32_t md5_uint32;

struct md5_ctx
{
md5_uint32 A;
md5_uint32 B;
md5_uint32 C;
md5_uint32 D;

md5_uint32 total[2];
md5_uint32 buflen;
char buffer[128] __attribute__ ((__aligned__ (__alignof__ (md5_uint32))));
};

extern void ...

Any chance to another release? (building from SVN isn't my domain)