--- autoconf/config.guess.orig	2015-07-14 18:33:55 UTC
+++ autoconf/config.guess
@@ -795,6 +795,15 @@ EOF
     *:BSD/OS:*:*)
 	echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
 	exit ;;
+    *:BSDSUniX:*:*)
+	UNAME_PROCESSOR=`/usr/bin/uname -p`
+	case ${UNAME_PROCESSOR} in
+	    amd64)
+		echo x86_64-unknown-bsdsunix`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+	    *)
+		echo ${UNAME_PROCESSOR}-unknown-bsdsunix`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+	esac
+	exit ;;
     *:FreeBSD:*:*)
 	UNAME_PROCESSOR=`/usr/bin/uname -p`
 	case ${UNAME_PROCESSOR} in