Enable MPI-2 should be included in MPI-3 and above.

Author: cniethammer

README

@@ -1,4 +1,4 @@
-Copyright (c) 2003-2009 High Performance Computing Center Stuttgart,
+Copyright (c) 2003-2017 High Performance Computing Center Stuttgart,
                         University of Stuttgart.  All rights reserved.
 Copyright (c) 2005-2009 The University of Tennessee and The University
                         of Tennessee Research Foundation.  All rights

configure.in

@@ -309,7 +309,7 @@ LIBS=${old_LIBS}
 AC_CHECK_MPI_VERSION
 
 if test "x$ENABLE_MPI2" = "xyes" ; then
-  if test "x$ac_cv_mpi_major_version" != "x2" ; then
+  if test "$ac_cv_mpi_major_version" -lt 2 ; then
     AC_MSG_ERROR([MPI Version does not seem to be supporting MPI2 features (maybe version check went wrong -- see config.log for details)...])
   fi
   AC_DEFINE(HAVE_MPI2, 1, [Define if MPI library supports MPI2])