--- /dev/null
+#!/bin/sh
+# SPDX-License-Identifier: (GPL-2.0 OR LGPL-2.1)
+
+# First argument is the path to the lttng modules sources.
+TOP_LTTNG_MODULES_DIR="$1"
+
+EXTRA_VERSION_NAME="$(sed -n '1p' "${TOP_LTTNG_MODULES_DIR}/extra_version/name" 2> /dev/null)"
+
+if [ "x${EXTRA_VERSION_NAME}" != "x" ]; then
+ echo "${EXTRA_VERSION_NAME}"
+else
+ echo "0"
+fi