From cd58b400110586bb0d0632dce0f667efbc3dbd88 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <superjoe30@gmail.com>
Date: Sat, 30 Sep 2017 18:20:12 -0400
Subject: update C headers to clang 5.0.0

---
 c_headers/float.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'c_headers/float.h')

diff --git a/c_headers/float.h b/c_headers/float.h
index 0f453d87cb..502143d4e4 100644
--- a/c_headers/float.h
+++ b/c_headers/float.h
@@ -33,6 +33,15 @@
  */
 #if (defined(__APPLE__) || (defined(__MINGW32__) || defined(_MSC_VER))) && \
     __STDC_HOSTED__ && __has_include_next(<float.h>)
+
+/* Prior to Apple's 10.7 SDK, float.h SDK header used to apply an extra level
+ * of #include_next<float.h> to keep Metrowerks compilers happy. Avoid this
+ * extra indirection.
+ */
+#ifdef __APPLE__
+#define _FLOAT_H_
+#endif
+
 #  include_next <float.h>
 
 /* Undefine anything that we'll be redefining below. */
-- 
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