From 9298471e12416e2c65a4c471493c2367e1637176 Mon Sep 17 00:00:00 2001
From: Gregor Jasny <gjasny@googlemail.com>
Date: Fri, 19 Feb 2016 10:11:04 +0100
Subject: [PATCH] Disable thread local storage for OSX < 10.7

---
 src/google/protobuf/stubs/platform_macros.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/google/protobuf/stubs/platform_macros.h b/src/google/protobuf/stubs/platform_macros.h
index 22b35723e..980c54b20 100644
--- a/src/google/protobuf/stubs/platform_macros.h
+++ b/src/google/protobuf/stubs/platform_macros.h
@@ -93,6 +93,7 @@ GOOGLE_PROTOBUF_PLATFORM_ERROR
 
 #if defined(__APPLE__)
 #define GOOGLE_PROTOBUF_OS_APPLE
+#include <Availability.h>
 #include <TargetConditionals.h>
 #if TARGET_OS_IPHONE
 #define GOOGLE_PROTOBUF_OS_IPHONE
@@ -119,4 +120,9 @@ GOOGLE_PROTOBUF_PLATFORM_ERROR
 #define GOOGLE_PROTOBUF_NO_THREADLOCAL
 #endif
 
+#if defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 1070
+// __thread keyword requires at least 10.7
+#define GOOGLE_PROTOBUF_NO_THREADLOCAL
+#endif
+
 #endif  // GOOGLE_PROTOBUF_PLATFORM_MACROS_H_