Make sure we get the definition of OPENSSL_NO_MD2.

#ifndef HEADER_MD2_H

#define HEADER_MD2_H

#include <openssl/opensslconf.h> /* OPENSSL_NO_MD2, MD2_INT */

#ifdef OPENSSL_NO_MD2

#error MD2 is disabled.

#endif

#define MD2_DIGEST_LENGTH	16

#define MD2_BLOCK       	16

#include <openssl/opensslconf.h> /* MD2_INT */

#ifdef  __cplusplus

extern "C" {