* src/xterm.h (xi_device_from_id, xi_frame_selected_for): Add
`extern' declaration.
extern struct frame *x_dnd_frame;
#ifdef HAVE_XINPUT2
-struct xi_device_t *xi_device_from_id (struct x_display_info *, int);
-bool xi_frame_selected_for (struct frame *, unsigned long);
+extern struct xi_device_t *xi_device_from_id (struct x_display_info *, int);
+extern bool xi_frame_selected_for (struct frame *, unsigned long);
#endif
extern void mark_xterm (void);