From 350cfd5d823d7ef08f7b6360051d12541c39bbca Mon Sep 17 00:00:00 2001
From: Oliver Kowalke <oliver.kowalke@gmail.com>
Date: Thu, 20 Oct 2016 08:59:51 +0200
Subject: [PATCH] use <experimental/filesystem> to test for version 6.1 (clang)

---
 include/boost/config/stdlib/libstdcpp3.hpp | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/include/boost/config/stdlib/libstdcpp3.hpp b/include/boost/config/stdlib/libstdcpp3.hpp
index c4a9c9d4..6ef99048 100644
--- a/include/boost/config/stdlib/libstdcpp3.hpp
+++ b/include/boost/config/stdlib/libstdcpp3.hpp
@@ -123,9 +123,7 @@
 //
 #ifdef __clang__
 
-#include <functional>
-
-#if defined(__cpp_lib_invoke) && (__cpp_lib_invoke >= 201411)
+#if __has_include(<experimental/filesystem>)
 #  define BOOST_LIBSTDCXX_VERSION 60100
 #elif __has_include(<experimental/any>)
 #  define BOOST_LIBSTDCXX_VERSION 50100