From 217fb2bdf54dfaa0c5b17549dca9fb46dfc9de86 Mon Sep 17 00:00:00 2001
From: Steffen Schuemann <s.schuemann@pobox.com>
Date: Sat, 22 Sep 2018 13:38:27 +0200
Subject: [PATCH] Updated readme.

---
 README.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 4b75fa3..f28a035 100644
--- a/README.md
+++ b/README.md
@@ -100,7 +100,7 @@ If you want to also use the `fstream` wrapper with `path` support as fallback,
 you might use:
 
 ```cpp
-#if defined(__has_include) && __has_include(<filesystem>)
+#if defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include) && __has_include(<filesystem>)
 #include <filesystem>
 namespace fs {
 using namespace std::filesystem;
@@ -119,6 +119,9 @@ using fstream = ghc::filesystem::fstream;
 #endif
 ```
 
+Now you have e.g. `fs::ofstream out(somePath);` and it is either the wrapper or
+the C++17 `std::ofstream`.
+
 Be aware, as a header-only library, it is not hiding the fact, that it
 uses system includes, so they "pollute" your global namespace.