From b217774ca825ba449ddb27e2bc9be6f3b8cad9b1 Mon Sep 17 00:00:00 2001
From: Mark Jonas <mark.jonas@de.bosch.com>
Date: Thu, 9 Aug 2018 10:59:05 +0200
Subject: [PATCH] Add configure switch for error logging

For keeping backwards compatibility the configure switch
--enable-error-log is enabled by default. To disable error logging
use --enable-error-log=no.

Signed-off-by: Mark Jonas <mark.jonas@de.bosch.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 configure.ac       | 17 +++++++++++++++++
 src/libsocketcan.c |  4 ++++
 2 files changed, 21 insertions(+)

diff --git a/configure.ac b/configure.ac
index 492da2c..9a807ec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -99,6 +99,23 @@ else
 fi
 
 
+#
+# Error logging
+#
+AC_MSG_CHECKING([whether to enable error logging])
+AC_ARG_ENABLE(error-log,
+    AS_HELP_STRING([--enable-error-log], [enable error log @<:@default=yes@:>@]),
+	[case "$enableval" in
+	y | yes) CONFIG_ERROR_LOG=yes ;;
+        *) CONFIG_ERROR_LOG=no ;;
+    esac],
+    [CONFIG_ERROR_LOG=yes])
+AC_MSG_RESULT([${CONFIG_ERROR_LOG}])
+if test "${CONFIG_ERROR_LOG}" = "no"; then
+    AC_DEFINE(DISABLE_ERROR_LOG, 1, [disable error logging])
+fi
+
+
 AC_CONFIG_FILES([
 	GNUmakefile
 	config/libsocketcan.pc
diff --git a/src/libsocketcan.c b/src/libsocketcan.c
index 5c7665c..c802849 100644
--- a/src/libsocketcan.c
+++ b/src/libsocketcan.c
@@ -22,6 +22,10 @@
  * @brief library code
  */
 
+#ifdef HAVE_CONFIG_H
+#include "libsocketcan_config.h"
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>