From 0988d9aa2089fdcab9e8261c8953d2ba1867c28e Mon Sep 17 00:00:00 2001
From: Lukas Larsson <lukas@erlang-solutions.com>
Date: Fri, 20 Nov 2015 15:24:47 +0100
Subject: erts: Fix pthread_setname_np warning on osx

---
 erts/include/internal/ethread.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/erts/include/internal/ethread.h b/erts/include/internal/ethread.h
index e5c5cdfa33..b23644d361 100644
--- a/erts/include/internal/ethread.h
+++ b/erts/include/internal/ethread.h
@@ -112,6 +112,10 @@ int ethr_assert_failed(const char *file, int line, const char *func, char *a);
 #error "_GNU_SOURCE not defined. Please, compile all files with -D_GNU_SOURCE."
 #endif
 
+#ifdef ETHR_HAVE_PTHREAD_SETNAME_NP_1
+#define _DARWIN_C_SOURCE
+#endif
+
 #if defined(ETHR_NEED_NPTL_PTHREAD_H)
 #include <nptl/pthread.h>
 #elif defined(ETHR_HAVE_MIT_PTHREAD_H)
-- 
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