--- configure.ac.orig	Wed May  5 00:01:36 2010
+++ configure.ac	Sat Sep 24 19:48:36 2011
@@ -30,12 +30,20 @@
 	backend="darwin"
 	AM_LDFLAGS="-Wl,-framework -Wl,IOKit -Wl,-framework -Wl,CoreFoundation -Wl,-prebind -no-undefined"
 	;;
+*-openbsd*)
+	AC_DEFINE(OS_OPENBSD, [], [OpenBSD backend])
+	AC_SUBST(OS_OPENBSD)
+	AC_MSG_RESULT([OpenBSD])
+	backend="openbsd"
+	AM_LDFLAGS=""
+	;;
 *)
 	AC_MSG_ERROR([unsupported operating system])
 esac
 
 AM_CONDITIONAL([OS_LINUX], [test "x$backend" == "xlinux"])
 AM_CONDITIONAL([OS_DARWIN], [test "x$backend" == "xdarwin"])
+AM_CONDITIONAL([OS_OPENBSD], [test "x$backend" == "xopenbsd"])
 
 # Library versioning
 lt_major="0"
