+AC_ARG_ENABLE(event-gui,
+ AS_HELP_STRING([--enable-event-gui], [Build the GUI event viewer (default=auto)]),
+ [build_eventgui="$enableval"],
+ [build_eventgui="auto"])
+PKG_CHECK_EXISTS([cairo glib-2.0 gtk+-3.0], [HAVE_GUILIBS="yes"], [HAVE_GUILIBS="no"])
+
+if test "x$build_eventgui" = "xauto"; then
+ build_eventgui="$HAVE_GUILIBS"
+fi
+if test "x$build_eventgui" = "xyes"; then
+ PKG_CHECK_MODULES(CAIRO, [cairo])
+ PKG_CHECK_MODULES(GTK, [glib-2.0 gtk+-3.0])
+fi
+AM_CONDITIONAL(BUILD_EVENTGUI, [test "x$build_eventgui" = "xyes"])
+