From e8859fca3eafb5aab6d029563b31219ccca0d673 Mon Sep 17 00:00:00 2001
From: Bruce Mitchener <bruce.mitchener@gmail.com>
Date: Sun, 4 Feb 2018 01:26:57 +0700
Subject: [PATCH] Enable use of atexit() on macOS and related platforms.

The atexit() man page indicates that this is expected to behave
in the expected way on unloading of shared libraries.
---
 src/hb-private.hh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/hb-private.hh b/src/hb-private.hh
index 62c9fb278..eba797cfc 100644
--- a/src/hb-private.hh
+++ b/src/hb-private.hh
@@ -221,6 +221,12 @@ static int errno = 0; /* Use something better? */
  * https://developer.android.com/tools/sdk/ndk/index.html
  */
 #    define HB_USE_ATEXIT 1
+#  elif defined(__APPLE__)
+/* For macOS and related platforms, the atexit man page indicates
+ * that it will be invoked when the library is unloaded, not only
+ * at application exit.
+ */
+#    define HB_USE_ATEXIT 1
 #  endif
 #endif