@@ -, +, @@ 
---
 tools/backlight_helper.c | 4 ++++
 1 file changed, 4 insertions(+)
--- a/tools/backlight_helper.c	
+++ a/tools/backlight_helper.c	
@@ -1,3 +1,7 @@ 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <stdio.h>
 #include <string.h>
 #include <stdarg.h>
--