--- configure.orig	2018-04-16 07:31:17.668048000 +0200
+++ configure	2018-04-16 07:33:11.165863000 +0200
@@ -2091,6 +2091,18 @@
                    need_pragma=yes ;
                    ;;
 
+  dragonfly* )     OSTYPE=FreeBSD ;
+		   OS_TAG="P_FREEBSD" ;
+                   OSRELEASE="900100" ;
+                   need_pragma=yes ;
+		   ;;
+
+  bsdsunix* )      OSTYPE=FreeBSD ;
+		   OS_TAG="P_FREEBSD" ;
+                   OSRELEASE="900300" ;
+                   need_pragma=yes ;
+		   ;;
+
   freebsd* )       OSTYPE=FreeBSD ;
 		   OS_TAG="P_FREEBSD" ;
                    if test "x$OSRELEASE" = "x"; then