Index: include/mk-osreldate.sh
===================================================================
--- include/mk-osreldate.sh	(revision 255775)
+++ include/mk-osreldate.sh	(working copy)
@@ -25,8 +25,6 @@
 #
 # $FreeBSD$
 
-set -e
-
 CURDIR=$(pwd)
 ECHO=${ECHO:=echo}
 
@@ -37,6 +35,12 @@ ${ECHO} creating osreldate.h from newvers.sh
 
 export PARAMFILE="${PARAM_H:=$CURDIR/../sys/sys/param.h}"
 . "${NEWVERS_SH:=$CURDIR/../sys/conf/newvers.sh}"
+
+if [ -z "${COPYRIGHT}" -o -z "${RELDATE}" ] ; then
+    ${ECHO} "newvers.sh did not generate required information"
+    exit 1
+fi
+
 cat > $tmpfile <<EOF
 $COPYRIGHT
 #ifdef _KERNEL