From fdc21d318449a8b17cad70b33a59428c5db23dab Mon Sep 17 00:00:00 2001
From: Michael Jumper <mike.jumper@guac-dev.org>
Date: Fri, 21 Nov 2014 12:42:50 -0800
Subject: [PATCH] GUAC-865: Check for display update support.

---
 configure.ac | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/configure.ac b/configure.ac
index c6b601f4..8edec0aa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -474,6 +474,16 @@ then
                       #include <winpr/collections.h>])
 fi
 
+# Header defining display update channel
+if test "x${have_freerdp}" = "xyes"
+then
+    AC_CHECK_HEADERS([freerdp/client/disp.h],
+                     [AC_DEFINE([HAVE_FREERDP_DISPLAY_UPDATE_SUPPORT],,
+                                [Whether FreeRDP supports the display update channel])],,
+                     [#include <winpr/wtypes.h>
+                      #include <winpr/collections.h>])
+fi
+
 # Addin registration variations
 if test "x${have_freerdp}" = "xyes"
 then