From 6a7d5271c431aec20750460ba906c9de21a265bd Mon Sep 17 00:00:00 2001
From: Jeff Squyres <jsquyres@cisco.com>
Date: Wed, 12 Aug 2015 11:39:46 -0700
Subject: [PATCH] ompi_ext.m4: allow extensions to have config.h.in

Previously, extensions were required to have a config.h for their C
bindings.  This commit allows them to have a config.h.in, in case
their C bindings header file is generated.
---
 config/ompi_ext.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config/ompi_ext.m4 b/config/ompi_ext.m4
index 9f0560820e..40be85af98 100644
--- a/config/ompi_ext.m4
+++ b/config/ompi_ext.m4
@@ -456,7 +456,7 @@ AC_DEFUN([EXT_PROCESS_COMPONENT],[
 
     AC_MSG_CHECKING([if MPI Extension $component has C bindings])
 
-    AS_IF([test ! -e "$test_header"],
+    AS_IF([test ! -e "$test_header" && test ! -e "$test_header.in"],
           [ # There *must* be C bindings
            AC_MSG_RESULT([no])
            AC_MSG_WARN([C bindings for MPI extensions are required])