64-bit fix to boost::format.

[lyx.git] / boost / boost / detail / lwm_win32.hpp

diff --git a/boost/boost/detail/lwm_win32.hpp b/boost/boost/detail/lwm_win32.hpp
index 6d37068e216fa2ffff8b8dedae84aa568d3412b8..22282314fb05fc1a589d20170c627385e9c7ee28 100644 (file)
--- a/boost/boost/detail/lwm_win32.hpp
+++ b/boost/boost/detail/lwm_win32.hpp
@@ -1,8 +1,10 @@
 #ifndef BOOST_DETAIL_LWM_WIN32_HPP_INCLUDED
 #define BOOST_DETAIL_LWM_WIN32_HPP_INCLUDED
 
-#if _MSC_VER >= 1020
-#pragma once
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
 #endif
 
 //