From 18ae855bc06472e7fa714ec177f2db4b32f82d8a Mon Sep 17 00:00:00 2001
From: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Date: Sat, 18 Dec 2010 23:02:48 +0100
Subject: Check from `configure` that the kernel source is patched with
 netlink.patch

---
 configure.ac | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure.ac b/configure.ac
index 5ac7c86..85073f4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -56,6 +56,11 @@ then
 	AC_MSG_ERROR([The kernel build directory $kbuilddir is not configured with IP6_NF_IPTABLES support (ip6tables)])
 fi
 
+if test "X`$GREP 'NFNL_SUBSYS_IPSET' $ksourcedir/include/linux/netfilter/nfnetlink.h`" = "X"
+then
+	AC_MSG_ERROR([The kernel source directory $ksourcedir is not patched with netlink.patch to support ipset])
+fi
+
 dnl Check kernel dependencies: nfnetlink.h
 NFNL_CB_CONST="`./check_const $ksourcedir/include/linux/netfilter/nfnetlink.h`"
 AC_SUBST(NFNL_CB_CONST)
-- 
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