-AM_CFLAGS = -include config.h $(COPTFLAGS) $(CWARNFLAGS) $(CDEBUGFLAGS) $(XCBPROTO_CFLAGS) $(XPROTO_CFLAGS) $(XAU_CFLAGS)
-libXCB_la_LIBADD = $(XCBPROTO_LIBS) $(XPROTO_LIBS) $(XAU_LIBS)
+AM_CFLAGS = $(COPTFLAGS) $(CWARNFLAGS) $(CDEBUGFLAGS) $(XCBPROTO_CFLAGS) $(XPROTO_CFLAGS) $(XAU_CFLAGS) $(XDMCP_CFLAGS)
+libXCB_la_LIBADD = $(XCBPROTO_LIBS) $(XPROTO_LIBS) $(XAU_LIBS) $(XDMCP_LIBS)