--- /dev/null
+--- a/ts2phc_slave.c
++++ b/ts2phc_slave.c
+@@ -4,6 +4,9 @@
+ * @note Copyright (C) 2019 Balint Ferencz <fernya@sch.bme.hu>
+ * @note SPDX-License-Identifier: GPL-2.0+
+ */
++#ifndef __SANE_USERSPACE_TYPES__
++#define __SANE_USERSPACE_TYPES__ /* For PPC64, to get LL64 types */
++#endif
+ #include <errno.h>
+ #include <linux/ptp_clock.h>
+ #include <poll.h>