Merge pull request #4023 from hppritcha/topic/remove_xrc_3.0.x

btl/openib: disable XRC in OpenIB BTL

Author: hppritcha

NEWS

@@ -71,6 +71,7 @@ Removed legacy support:
 - "yoda" SPML component is removed from the Open SHMEM codebase. It was utilizing
   Open MPI BTL components for supported networks. Please see README for the currently
   available options.
+- Remove IB XRC support from the OpenIB BTL due to lack of support.
 
 Known issues (to be addressed in v3.0.1):
 

config/opal_check_openfabrics.m4

@@ -11,7 +11,7 @@
 # Copyright (c) 2004-2005 The Regents of the University of California.
 #                         All rights reserved.
 # Copyright (c) 2006-2016 Cisco Systems, Inc.  All rights reserved.
-# Copyright (c) 2006-2016 Los Alamos National Security, LLC.  All rights
+# Copyright (c) 2006-2017 Los Alamos National Security, LLC.  All rights
 #                         reserved.
 # Copyright (c) 2006-2009 Mellanox Technologies. All rights reserved.
 # Copyright (c) 2010-2012 Oracle and/or its affiliates.  All rights reserved.
@@ -301,12 +301,13 @@ AC_DEFUN([OPAL_CHECK_OPENFABRICS],[
 
 AC_DEFUN([OPAL_CHECK_OPENFABRICS_CM_ARGS],[
     #
-    # ConnectX XRC support
+    # ConnectX XRC support - disabled see issue #3890
     #
-    AC_ARG_ENABLE([openib-connectx-xrc],
-        [AC_HELP_STRING([--enable-openib-connectx-xrc],
-                        [Enable ConnectX XRC support in the openib BTL. If you do not have InfiniBand ConnectX adapters, you may disable the ConnectX XRC support. If you do not know which InfiniBand adapter is installed on your cluster, leave this option enabled (default: enabled)])],
-                        [enable_connectx_xrc="$enableval"], [enable_connectx_xrc="yes"])
+dnl    AC_ARG_ENABLE([openib-connectx-xrc],
+dnl        [AC_HELP_STRING([--enable-openib-connectx-xrc],
+dnl                        [Enable ConnectX XRC support in the openib BTL. (default: disabled)])],
+dnl                        [enable_connectx_xrc="$enableval"], [enable_connectx_xrc="no"])
+    enable_connectx_xrc="no"
     #
     # Unconnect Datagram (UD) based connection manager
     #