/* sha1.h */
-#include "pppdconf.h"
+#ifndef PPP_SHA1_H
+#define PPP_SHA1_H
-#ifndef __SHA1_INCLUDE_
-#define __SHA1_INCLUDE_
+#include "pppdconf.h"
#ifndef USE_SHA
#include <openssl/sha.h>
extern void SHA1_Final(unsigned char[SHA1_SIGNATURE_SIZE], SHA1_CTX *);
#endif /* USE_SHA */
-#endif /* __SHA1_INCLUDE_ */
+#endif /* PPP_SHA1_H */