From ef4704339401e54e8dcfec173d270ffbf2f1007e Mon Sep 17 00:00:00 2001
From: John Klug <john.klug@multitech.com>
Date: Wed, 24 Jul 2019 17:37:08 -0500
Subject: Need to define Linux version feature test macros

(cherry picked from commit f9361503237b13383162dc4a9576c9da82b71442)
---
 io-module/buttons.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/io-module/buttons.h b/io-module/buttons.h
index 510b7d3..ef80f34 100644
--- a/io-module/buttons.h
+++ b/io-module/buttons.h
@@ -27,6 +27,7 @@
 #include <linux/ctype.h>
 #include <linux/io.h>
 #include <linux/module.h>
+#include <linux/version.h>
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,11,0)
 #include <linux/signalfd.h>
 #endif
-- 
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