--- /dev/null
+/*
+ * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ */
+
+#ifndef UST_THREAD_H
+#define UST_THREAD_H
+
+#ifdef HAVE_LIBLTTNG_UST_CTL
+
+bool launch_application_notification_thread(int apps_cmd_notify_pipe_read_fd);
+
+#else /* HAVE_LIBLTTNG_UST_CTL */
+
+static
+bool launch_application_notification_thread(
+ int apps_cmd_notify_pipe_read_fd __attribute__((unused)))
+{
+ return true;
+}
+
+#endif /* HAVE_LIBLTTNG_UST_CTL */
+
+#endif /* UST_THREAD_H */