script: Implemented a helper script to help build include/version.h

scripts/gen-version.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+if ! command -v git &>/dev/null; then
+	echo "Git not found, assuming up to date include/version.h"
+	exit 0
+fi
+
+if ! git rev-parse HEAD &>/dev/null; then
+	echo "No git repository found, not updating include/version.h"
+	exit 0
+fi
+
+version=`git describe --always --dirty --tags`
+header="#define FIRMWARE_VERSION \"$version\""
+
+if [ "`cat include/version.h 2>/dev/null`" != "$header" ]; then
+	echo $header > include/version.h
+fi