From d44f8410dfeb114e05a44166ea0d9271438eac38 Mon Sep 17 00:00:00 2001
From: David Klempner <klempner@imsanet.org>
Date: Tue, 3 Feb 2015 18:30:48 -0800
Subject: [PATCH] Have cpu_linux.c define _GNU_SOURCE at the beginning of the
 file

Feature test macros need to be defined before including any other
headers.
---
 src/core/support/cpu_linux.c | 33 ++-------------------------------
 1 file changed, 2 insertions(+), 31 deletions(-)

diff --git a/src/core/support/cpu_linux.c b/src/core/support/cpu_linux.c
index eab8b7fbd05..508ebfaebde 100644
--- a/src/core/support/cpu_linux.c
+++ b/src/core/support/cpu_linux.c
@@ -31,44 +31,15 @@
  *
  */
 
+#define _GNU_SOURCE
+
 #include <grpc/support/port_platform.h>
 
 #ifdef GPR_CPU_LINUX
 
 #include "src/core/support/cpu.h"
 
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#define GRPC_GNU_SOURCE
-#endif
-
-#ifndef __USE_GNU
-#define __USE_GNU
-#define GRPC_USE_GNU
-#endif
-
-#ifndef __USE_MISC
-#define __USE_MISC
-#define GRPC_USE_MISC
-#endif
-
 #include <sched.h>
-
-#ifdef GRPC_GNU_SOURCE
-#undef _GNU_SOURCE
-#undef GRPC_GNU_SOURCE
-#endif
-
-#ifdef GRPC_USE_GNU
-#undef __USE_GNU
-#undef GRPC_USE_GNU
-#endif
-
-#ifdef GRPC_USE_MISC
-#undef __USE_MISC
-#undef GRPC_USE_MISC
-#endif
-
 #include <errno.h>
 #include <unistd.h>
 #include <string.h>