$OpenBSD$
--- configure.ac.orig	Sun Jun 13 15:09:42 2010
+++ configure.ac	Mon Jun 21 22:06:22 2010
@@ -146,6 +146,9 @@ 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])