$OpenBSD: patch-acinclude_m4,v 1.1 2007/12/11 07:55:05 jakemsr Exp $
--- acinclude.m4.orig	Fri Apr  6 06:23:11 2007
+++ acinclude.m4	Sun Oct 21 05:27:14 2007
@@ -4394,7 +4394,10 @@ AC_DEFUN([KDE_CHECK_LIBPTHREAD],
 
   dnl Un-special-case for FreeBSD.
   if test "x$LIBPTHREAD" = "xPTHREAD" ; then
-    LIBPTHREAD=""
+    case $host_os in
+	openbsd*) LIBPTHREAD="-pthread" ;;
+	*) LIBPTHREAD="" ;;
+    esac
   fi
 
   AC_SUBST(LIBPTHREAD)