--- libmpv/mpv.def.orig	2017-12-25 20:44:17 UTC
+++ libmpv/mpv.def
@@ -1,3 +1,5 @@
+__progname
+environ
 mpv_client_api_version
 mpv_client_name
 mpv_command
@@ -43,4 +45,4 @@ mpv_terminate_destroy
 mpv_unobserve_property
 mpv_wait_async_requests
 mpv_wait_event
-mpv_wakeup
\ No newline at end of file
+mpv_wakeup