From 81865503a126845f1f85da33c83ef204d0545a52 Mon Sep 17 00:00:00 2001
From: Vlad Lungu <vlad.lungu@windriver.com>
Date: Fri, 4 Dec 2015 14:29:04 +0200
Subject: [PATCH] Use LWIP_PLATFORM_DIAG for LWIP

fprintf() is not guaranteed to be available. Or even printf().

Signed-off-by: Vlad Lungu <vlad.lungu@windriver.com>
---
 src/debug.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/debug.c b/src/debug.c
index f3b6a8fc..e62a4edf 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -34,6 +34,11 @@
 #include "encode.h"
 #include "net.h"
 
+#ifdef WITH_LWIP
+# define fprintf(fd, ...) LWIP_PLATFORM_DIAG((__VA_ARGS__))
+# define fflush(...)
+#endif
+
 #ifdef WITH_CONTIKI
 # ifndef DEBUG
 #  define DEBUG DEBUG_PRINT