--- configure.orig	2017-03-09 15:15:03.451409000 +0100
+++ configure	2017-03-09 15:19:37.205559000 +0100
@@ -12228,7 +12228,7 @@
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking gethostbyaddr_r() syntax" >&5
 $as_echo_n "checking gethostbyaddr_r() syntax... " >&6; }
 case "$host" in
-  *-freebsd*)
+  *-freebsd*|*-bsdsunix*)
                             ac_fn_c_check_decl "$LINENO" "gethostbyaddr_r" "ac_cv_have_decl_gethostbyaddr_r" "
         #ifdef HAVE_NETDB_H
         #include <netdb.h>