From 15ed7ad9f5f36128ca718643130964f179aaaeff Mon Sep 17 00:00:00 2001
From: Gilles Gouaillardet <gilles@rist.or.jp>
Date: Thu, 24 Dec 2015 14:38:10 +0900
Subject: [PATCH] btl/sm: add missing #include <unistd.h>

Thanks Marco Atzeri for contributing the original patch
---
 opal/mca/btl/sm/btl_sm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/opal/mca/btl/sm/btl_sm.c b/opal/mca/btl/sm/btl_sm.c
index e0eee09279..d1758c9ddd 100644
--- a/opal/mca/btl/sm/btl_sm.c
+++ b/opal/mca/btl/sm/btl_sm.c
@@ -30,6 +30,9 @@
 
 #include <sys/types.h>
 #include <sys/stat.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
 #endif  /* HAVE_FCNTL_H */