Implement the infrastructure for feature-test macros. Very few actual feature test macros, though. Reviewed as: https://reviews.llvm.org/D51955
llvm-svn: 342073
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: f56972e22489c92028e5147344ab8b31b0b4fed5
diff --git a/include/version b/include/version
index 6d10411..80c2797 100644
--- a/include/version
+++ b/include/version
@@ -101,4 +101,17 @@
#pragma GCC system_header
#endif
+#if _LIBCPP_STD_VER > 11
+#endif
+
+#if _LIBCPP_STD_VER > 14
+# define __cpp_lib_atomic_is_always_lock_free 201603L
+# define __cpp_lib_filesystem 201703L
+# define __cpp_lib_invoke 201411L
+# define __cpp_lib_void_t 201411L
+#endif
+
+#if _LIBCPP_STD_VER > 17
+#endif
+
#endif // _LIBCPP_VERSIONH