In file included from /usr/include/dbus-1.0/dbus/dbus-glib-lowlevel.h:28,
                 from gui.c:27:
/usr/include/dbus-1.0/dbus/dbus.h:30:2: error: #error "Please define DBUS_API_SUBJECT_TO_CHANGE to acknowledge your understanding that D-Bus hasn't reached 1.0 and is subject to protocol and API churn. See the README for a full explanation.