X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=boost%2Fboost%2Fdetail%2Flwm_win32.hpp;h=22282314fb05fc1a589d20170c627385e9c7ee28;hb=fce4ab0e79bfda9651d7d7f3c951bfb5d7516fc5;hp=6d37068e216fa2ffff8b8dedae84aa568d3412b8;hpb=e1644a68eb123c267a7ef2e651c66b788c38f03a;p=lyx.git

diff --git a/boost/boost/detail/lwm_win32.hpp b/boost/boost/detail/lwm_win32.hpp
index 6d37068e21..22282314fb 100644
--- 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
 
 //