From 337d40956909c71c3bd527adf9ed6783de631303 Mon Sep 17 00:00:00 2001
From: Kevin Cernekee <cernekee@gmail.com>
Date: Sat, 26 Oct 2013 11:03:06 -0700
Subject: [PATCH 4/7] android: build: Blacklist TCPOPTSTRIP on systems that
 lack TCPOPT_*

Bionic's <netinet/tcp.h> is missing constants needed to build this module,
so have autoconf check for this condition before trying to build it.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
---
 configure.ac |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/configure.ac b/configure.ac
index f8affed..9607560 100644
--- a/configure.ac
+++ b/configure.ac
@@ -91,6 +91,14 @@ if test "$nfconntrack" -ne 1; then
 	echo "WARNING: libnetfilter_conntrack not found, connlabel match will not be built";
 fi;
 
+AC_CHECK_DECL([TCPOPT_WINDOW], [tcpopt_ok=1], [tcpopt_ok=0],
+	[[#include <netinet/tcp.h>]])
+
+if test "$tcpopt_ok" -ne 1; then
+	blacklist_modules="$blacklist_modules TCPOPTSTRIP";
+	echo "WARNING: TCPOPT_* constants not found, TCPOPTSTRIP target will not be built";
+fi;
+
 AC_SUBST([blacklist_modules])
 AC_CHECK_SIZEOF([struct ip6_hdr], [], [#include <netinet/ip6.h>])
 
-- 
1.7.9.5

