+/* auth_krb */
+#ifdef KRB4
+int mm_auth_krb4(struct Authctxt *, void *, char **, void *);
+#endif
+#ifdef KRB5
+/* auth and reply are really krb5_data objects, but we don't want to
+ * include all of the krb5 headers here */
+int mm_auth_krb5(void *authctxt, void *auth, char **client, void *reply);
+#endif
+