From 20193194c3bccfc8df7bf5a713a04844ba41610e Mon Sep 17 00:00:00 2001
From: Bruno Van de Velde <bruno@texus.me>
Date: Wed, 13 Sep 2017 19:26:38 +0200
Subject: [PATCH] Changed an #if to #ifdef

---
 include/TGUI/Config.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/TGUI/Config.hpp b/include/TGUI/Config.hpp
index cb9fd7c6..cc58dc1a 100644
--- a/include/TGUI/Config.hpp
+++ b/include/TGUI/Config.hpp
@@ -93,13 +93,13 @@
 #endif
 
 // Enable constexpr when using Clang or at least GCC 5 or MSVC++ 14.1 (VS2017)
-#if _MSC_VER
+#if defined(_MSC_VER)
     #if _MSC_VER >= 1910
         #define TGUI_CONSTEXPR constexpr
     #else
         #define TGUI_CONSTEXPR
     #endif
-#elif __GNUC__
+#elif defined(__GNUC__)
     #if __cpp_constexpr >= 201304
         #define TGUI_CONSTEXPR constexpr
     #else