diff --git a/libcxx/include/__config b/libcxx/include/__config
--- a/libcxx/include/__config
+++ b/libcxx/include/__config
@@ -537,7 +537,7 @@
 #  define _LIBCPP_CRT_FUNC
 #endif
 
-#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS)
+#if defined(_LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS) || (defined(__MINGW32__) && !defined(_LIBCPP_BUILDING_LIBRARY))
 #  define _LIBCPP_DLL_VIS
 #  define _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS
 #  define _LIBCPP_CLASS_TEMPLATE_INSTANTIATION_VIS