From c0b4959e38c6c27a261beba53d0b062a73963528 Mon Sep 17 00:00:00 2001
From: Daniel James <daniel@calamity.org.uk>
Date: Thu, 20 Mar 2014 23:07:06 +0000
Subject: [PATCH] Only use 'pragma once' when supported.

---
 include/boost/python/other.hpp | 5 +++--
 include/boost/python/ptr.hpp   | 4 +++-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/include/boost/python/other.hpp b/include/boost/python/other.hpp
index 24a24ad8d..b53443310 100644
--- a/include/boost/python/other.hpp
+++ b/include/boost/python/other.hpp
@@ -7,9 +7,10 @@
 // accompanying file LICENSE_1_0.txt or copy at
 // http://www.boost.org/LICENSE_1_0.txt)
 
-# pragma once
-
 # include <boost/config.hpp>
+# if defined(BOOST_HAS_PRAGMA_ONCE)
+# pragma once
+# endif
 
 namespace boost { namespace python {
 
diff --git a/include/boost/python/ptr.hpp b/include/boost/python/ptr.hpp
index 287daba45..cb17e7d1b 100644
--- a/include/boost/python/ptr.hpp
+++ b/include/boost/python/ptr.hpp
@@ -11,9 +11,11 @@
 //  Copyright (C) 1999, 2000 Jaakko Jarvi (jaakko.jarvi@cs.utu.fi)
 //  Copyright (C) 2001 Peter Dimov
 
+# include <boost/config.hpp>
+# if defined(BOOST_HAS_PRAGMA_ONCE)
 # pragma once
+# endif
 
-# include <boost/config.hpp>
 # include <boost/mpl/bool.hpp>
 
 namespace boost { namespace python {