I try to compile gtkd 3.6.6. But I should mention that I added some locales to library.

dmd -O -Igenerated/gtkd -c generated/gtkd/gdk/Event.d ofgenerated/gtkd/gdk/Event.o
generated/gtkd/gdk/Event.d(104): Error: undefined identifier LIBRARY_GDK

I get this error.

Line 104 is like this.

	~this ()
	{
		if (  Linker.isLoaded(LIBRARY_GDK) && ownedRef )
			gdk_event_free(gdkEvent);
	}