From 2a8f78bdee2ec7b4df558a64fa642f34b09cc1ca Mon Sep 17 00:00:00 2001
From: Rong Chang <rongchang@google.com>
Date: Wed, 14 Dec 2011 14:33:37 +0800
Subject: [PATCH] Force header file stdlib.h to declare ptsname_r()

Macro _GNU_SOURCE is not automatically defined in chroot host toolchain.
Add this macro to let stdlib.h header file declare ptsname_r() function.

BUG=None
TEST=Run "gcc -V" to check if the toolchain version >= 4.6.0.
And run "make clean; make" in Chromium OS dev chroot.

Change-Id: I02d8a6f9ac9a6e51da3f2cd2ecbec9ec1f096c6a
Signed-off-by: Rong Chang <rongchang@chromium.org>
---
 util/ec_uartd.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/util/ec_uartd.c b/util/ec_uartd.c
index ae2e51a580..24949545f5 100644
--- a/util/ec_uartd.c
+++ b/util/ec_uartd.c
@@ -13,6 +13,10 @@
 /* Force header files to define grantpt(), posix_openpt(), cfmakeraw() */
 #define _BSD_SOURCE
 #define _XOPEN_SOURCE 600
+/* Force header file to declare ptsname_r(), etc. */
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
 
 #include <fcntl.h>
 #include <ftdi.h>