Update to boost 1.72

[lyx.git] / 3rdparty / boost / libs / regex / src / static_mutex.cpp

diff --git a/3rdparty/boost/libs/regex/src/static_mutex.cpp b/3rdparty/boost/libs/regex/src/static_mutex.cpp
index d02b01fc6cdd9286871349d06f3a3534437b1af4..35dd0c79053a46725742a5e63afab3bf131ac976 100644 (file)
--- a/3rdparty/boost/libs/regex/src/static_mutex.cpp
+++ b/3rdparty/boost/libs/regex/src/static_mutex.cpp
@@ -28,7 +28,9 @@
 #ifndef NOMINMAX
 #  define NOMINMAX
 #endif
-#define WIN32_LEAN_AND_MEAN
+#ifndef WIN32_LEAN_AND_MEAN
+#  define WIN32_LEAN_AND_MEAN
+#endif
 #include <windows.h>
 #include <boost/static_assert.hpp>
 #endif