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-rw-r--r--boost/config/stdlib/libcpp.hpp10
1 files changed, 10 insertions, 0 deletions
diff --git a/boost/config/stdlib/libcpp.hpp b/boost/config/stdlib/libcpp.hpp
index eee2d75d21..ab5d123544 100644
--- a/boost/config/stdlib/libcpp.hpp
+++ b/boost/config/stdlib/libcpp.hpp
@@ -67,4 +67,14 @@
// libc++ uses a non-standard messages_base
#define BOOST_NO_STD_MESSAGES
+#if defined(__has_include)
+#if !__has_include(<shared_mutex>)
+# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
+#elif __cplusplus <= 201103
+# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
+#endif
+#elif __cplusplus < 201402
+# define BOOST_NO_CXX14_HDR_SHARED_MUTEX
+#endif
+
// --- end ---