--- /dev/null
+/*
+ * ceph-dokan - Win32 CephFS client based on Dokan
+ *
+ * Copyright (C) 2021 SUSE LINUX GmbH
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+*/
+
+#include "include/compat.h"
+
+std::wstring to_wstring(const std::string& str);
+std::string to_string(const std::wstring& str);
+
+void to_filetime(time_t t, LPFILETIME pft);
+void to_unix_time(FILETIME ft, time_t *t);