Index: src/macros.h
==================================================================
--- src/macros.h
+++ src/macros.h
@@ -66,10 +66,18 @@
 #elif defined(OF_HAVE___THREAD)
 # define OF_HAVE_COMPILER_TLS
 # define thread_local __thread
 #endif
 
+/*
+ * Do not use compiler TLS when targeting the iOS simulator, as the iOS 9
+ * simulator does not support it (fails at runtime).
+ */
+#if defined(OF_HAVE_COMPILER_TLS) && defined(OF_IOS) && defined(OF_X86)
+# undef OF_HAVE_COMPILER_TLS
+#endif
+
 #ifdef __GNUC__
 # define OF_INLINE inline __attribute__((__always_inline__))
 # define OF_LIKELY(cond) (__builtin_expect(!!(cond), 1))
 # define OF_UNLIKELY(cond) (__builtin_expect(!!(cond), 0))
 # define OF_CONST_FUNC __attribute__((__const__))