From 9119fa1c7df778328a97b2e6891b54f98bf9ce89 Mon Sep 17 00:00:00 2001
From: Keith Winstein <keithw@mit.edu>
Date: Sat, 31 Mar 2012 15:07:28 -0400
Subject: [PATCH] Add warning and check for IUTF8

---
 configure.ac | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/configure.ac b/configure.ac
index c9748cb..36e8cdc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -171,6 +171,12 @@ AC_CHECK_DECL([__STDC_ISO_10646__],
   [AC_MSG_WARN([C library doesn't advertise wchar_t is Unicode (OS X works anyway with workaround).])],
   [[#include <wchar.h>]])
 
+AC_CHECK_DECL([IUTF8],
+  [AC_DEFINE([HAVE_IUTF8], [1],
+     [Define if IUTF8 is a defined termios mode.])],
+  [AC_MSG_WARN([No IUTF8 termios mode; character-erase of multibyte character sequence probably does not work properly in canonical mode on this platform.])],
+  [[#include <termios.h>]])
+
 # Checks for protobuf
 PKG_CHECK_MODULES([protobuf], [protobuf])