--- config.guess.orig	2020-03-04 19:29:59.000000000 +1100
+++ config.guess	2020-09-07 16:33:05.562080000 +1000
@@ -156,6 +156,16 @@
 # Note: order is significant - the case branches are not exclusive.
 
 case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
+    *:BSDSUnIX:*:*)
+	UNAME_PROCESSOR=`/usr/bin/uname -p`
+	case ${UNAME_PROCESSOR} in
+	    amd64)
+		UNAME_PROCESSOR=x86_64 ;;
+	    i386)
+		UNAME_PROCESSOR=i586 ;;
+	esac
+	echo ${UNAME_PROCESSOR}-unknown-bsdsunix`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
+	exit ;;
     *:NetBSD:*:*)
 	# NetBSD (nbsd) targets should (where applicable) match one or
 	# more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,