+/**
+ * These macros enable the detection of the C++11 variadic templates in
+ * compilers which support them.
+ */
+#if __cplusplus >= 201103L
+# define HAS_CXX11_VARIADIC_TEMPLATES
+#elif defined __clang__
+# if __has_feature(cxx_variadic_templates)
+# define HAS_CXX11_VARIADIC_TEMPLATES
+# endif
+#elif (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
+# if defined __GXX_EXPERIMENTAL_CXX0X__
+# define HAS_CXX11_VARIADIC_TEMPLATES
+# endif
+#elif _MSC_FULL_VER >= 170051025
+# define HAS_CXX11_VARIADIC_TEMPLATES
+#endif
+