From 15af38a25c679d3ed0f72bbc1109c6b34a959c39 Mon Sep 17 00:00:00 2001
From: Leo Ruan <tingquan.ruan@cn.bosch.com>
Date: Sat, 4 Aug 2018 20:07:43 +0200
Subject: [PATCH] Add compile option to disable error logging

If you have an application stderr shall not be used by libsocketcan
you can disable all error logging by defining DISABLE_ERROR_LOG.

Signed-off-by: Leo Ruan <tingquan.ruan@cn.bosch.com>
Signed-off-by: Mark Jonas <mark.jonas@de.bosch.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 src/libsocketcan.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/libsocketcan.c b/src/libsocketcan.c
index a1a4717..5c7665c 100644
--- a/src/libsocketcan.c
+++ b/src/libsocketcan.c
@@ -36,6 +36,12 @@
 
 #include <libsocketcan.h>
 
+/* Define DISABLE_ERROR_LOG to disable printing of error messages to stderr. */
+#ifdef DISABLE_ERROR_LOG
+#define perror(x)
+#define fprintf(...)
+#endif
+
 #define parse_rtattr_nested(tb, max, rta) \
 	(parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))