$NetBSD: patch-ab,v 1.4 2008/12/30 14:40:29 hasso Exp $

--- configure.orig	2008-10-29 08:46:35.000000000 -0400
+++ configure	2008-12-19 00:09:49.000000000 -0500
@@ -20983,6 +20983,14 @@
 echo "${ECHO_T}no" >&6; }
 fi
 
+case $host_os in
+  netbsd*|dragonfly*)
+    HAVE_LIBDL=yes
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_LIBDL 1
+_ACEOF
+    ;;
+esac
 
 if test "$HAVE_LIBDL"="yes"; then
   BUILD_MODULES_TRUE=
@@ -22342,6 +22350,11 @@
 test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
 
 DEFS=-DHAVE_CONFIG_H
+case $host_os in
+  netbsd*|dragonfly*)
+    DEFS="$DEFS -Dbswap_32=bswap32 -Dbswap_16=bswap16 -Dbswap_64=bswap64"
+    ;;
+esac
 
 ac_libobjs=
 ac_ltlibobjs=