From 978fb43a267d1b563607b3b17c588d6c17c7d0f0 Mon Sep 17 00:00:00 2001
From: Jeff Squyres <jsquyres@cisco.com>
Date: Tue, 24 Nov 2009 23:20:37 +0000
Subject: [PATCH] Add a Big Hairy Warning if you --enable-progress-threads

This commit was SVN r22230.
---
 opal/config/opal_config_threads.m4 | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/opal/config/opal_config_threads.m4 b/opal/config/opal_config_threads.m4
index bde6cd89ed..7161bebfa9 100644
--- a/opal/config/opal_config_threads.m4
+++ b/opal/config/opal_config_threads.m4
@@ -242,6 +242,28 @@ AC_DEFINE_UNQUOTED([OPAL_ENABLE_PROGRESS_THREADS], [$OPAL_ENABLE_PROGRESS_THREAD
                    [Whether we should use progress threads rather than polling])
 AC_MSG_RESULT([$enable_progress_threads])
 
+AS_IF([test "$enable_progress_threads" = "yes"],
+      [cat <<EOF
+*******************************************************************************
+WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+*******************************************************************************
+
+Open MPI was specifically configured to enable "progress threads" (via
+--enable-progress-threads). This feature is currently known not to work
+-- MPI jobs may crash.
+
+Note that this feature is only active so that developers can debug it.
+Use this feature at your own risk.
+
+(sleeping for 5 seconds to give you a chance to reconsider!)
+
+*******************************************************************************
+WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+*******************************************************************************
+
+EOF
+       sleep 5])
+
 #
 # Fault Tolerance Thread
 #