$OpenBSD$
--- configure.ac.orig	Mon Nov 29 19:46:35 2010
+++ configure.ac	Thu Dec  2 01:52:08 2010
@@ -141,6 +141,9 @@ then
 elif test `echo $target_os | sed "s/\(netbsd\).*/\1/"` = "netbsd"
 then
 	AC_SUBST([TARGET_OS],[netbsd])
+elif test `echo $target_os | sed "s/\(openbsd\).*/\1/"` = "openbsd"
+then
+	AC_SUBST([TARGET_OS],[openbsd])
 elif test `echo $target_os | sed "s/\(mingw32\).*/\1/"` = "mingw32"
 then
 	AC_SUBST([TARGET_OS],[mingw32])