From 1b8c69e14d97bf5d0e973740c5802fdbf96f756d Mon Sep 17 00:00:00 2001
From: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Date: Tue, 13 Jul 2010 14:18:22 +0200
Subject: Compatibility and documentation fixes

Makefile fixes: compiler flags
README and manpage fixes
Compatibility with newer gcc releases (4.4.x)
Compatibility with the 2.6.35 kernel tree
---
 configure.ac | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index f75ef49..7622ac4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -32,6 +32,18 @@ then
 	AC_MSG_ERROR([Invalid kernel build directory $kbuilddir])
 fi
 
+if test ! -e "$kbuilddir/.config"
+then
+	AC_MSG_ERROR([The kernel build directory $kbuilddir is not configured])
+fi
+
+AC_PROG_GREP
+
+if test "X`$GREP '^CONFIG_IP6_NF_IPTABLES=' $kbuilddir/.config`" = "X"
+then
+	AC_MSG_ERROR([The kernel build directory $kbuilddir is not configured with IP6_NF_IPTABLES support (ip6tables)])
+fi
+
 dnl Check kernel dependencies: nfnetlink.h
 NFNL_CB_CONST="`./check_const $kbuilddir/include/linux/netfilter/nfnetlink.h`"
 AC_SUBST(NFNL_CB_CONST)
-- 
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