$OpenBSD: patch-configure_in,v 1.2 2008/08/25 15:15:53 jasper Exp $
--- configure.in.orig	Thu Aug 21 16:16:14 2008
+++ configure.in	Thu Aug 21 16:16:32 2008
@@ -44,6 +44,9 @@ if test $valid_gtk_version -eq 0; then
 fi
 AC_MSG_RESULT(recent enough)
 
+dnl check for headers
+AC_CHECK_HEADERS(linux/sem.h)
+
 dnl check for dctc
 AC_CHECK_PROG(HAVE_DCTC,dctc,yes,no)
 if test "x$HAVE_DCTC" = "xno"; then