diff -p -up gdm-2.22.0/daemon/Makefile.am~ gdm-2.22.0/daemon/Makefile.am
--- gdm-2.22.0/daemon/Makefile.am~	2008-04-18 05:29:28.000000000 +0200
+++ gdm-2.22.0/daemon/Makefile.am	2008-07-04 07:09:07.000000000 +0200
@@ -341,6 +341,7 @@ gdm_binary_LDADD = \
 	$(DAEMON_LIBS)				\
 	$(XDMCP_LIBS)                           \
 	$(LIBWRAP_LIBS)                         \
+	-lXau \
 	$(NULL)
 
 if WITH_CONSOLE_KIT