Add basic backlight percentage support

[slstatus.git] / util.h

diff --git a/util.h b/util.h
index b474f88..f55c0eb 100644 (file)
--- a/util.h
+++ b/util.h
@@ -1,4 +1,6 @@
 /* See LICENSE file for copyright and license details. */
+#include <stddef.h>
+
 extern char buf[1024];
 
 #define LEN(x) (sizeof (x) / sizeof *(x))