Merge from bittboy/buildroot@db180c0

package/ngrep/0003-fix-disable-tcpkill.patch

@@ -0,0 +1,39 @@
+From e8522284ef326bd9f222e04c4a970ffafa56fba6 Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Sat, 3 Nov 2018 23:23:36 +0100
+Subject: [PATCH] fix --disable-tcpkill
+
+If the user uses --disable-tcpkill, build can fail if libnet is not
+found on the system.
+
+To fix this, move AC_CHECK_LIB to found libnet outside AC_ARG_ENABLE
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Upstream status: https://github.com/jpr5/ngrep/pull/15]
+---
+ configure.in | 6 ++----
+ 1 file changed, 2 insertions(+), 4 deletions(-)
+
+diff --git a/configure.in b/configure.in
+index dbef39b..7c3dd43 100644
+--- a/configure.in
++++ b/configure.in
+@@ -173,13 +173,11 @@ dnl
+ 
+ AC_ARG_ENABLE(tcpkill,
+ [  --enable-tcpkill        enable connection killing support (default off)],
+-[
+-  AC_CHECK_LIB(net, libnet_init,,echo !!! error: tcpkill feature enabled but no libnet found; exit)
+-  use_tcpkill="$enableval"
+-],
++[ use_tcpkill="$enableval" ],
+ [ use_tcpkill="no" ])
+ 
+ if test $use_tcpkill = yes; then
++  AC_CHECK_LIB(net, libnet_init,,echo !!! error: tcpkill feature enabled but no libnet found; exit)
+   USE_TCPKILL="1"
+   EXTRA_OBJS="$EXTRA_OBJS tcpkill.o"
+   EXTRA_DEFINES="$EXTRA_DEFINES $(libnet-config --defines)"
+-- 
+2.17.1
+