https://bugs.gentoo.org/874738
--- a/src/main.c
+++ b/src/main.c
@@ -34,2 +34,3 @@
 #include "games-scores-dialog.h"
+#include "games-setgid-io.h"
 
--- a/src/main.h
+++ b/src/main.h
@@ -26,2 +26,5 @@
 void
+init_pref_window(void);
+
+void
 save_preferences(void);