diff --git a/daemon/Makefile.in b/daemon/Makefile.in
index 17e5d52..9570b3f 100644
--- a/daemon/Makefile.in
+++ b/daemon/Makefile.in
@@ -408,7 +408,7 @@ gdm_binary_LDFLAGS = \
 gdm_binary_LDADD = $(DAEMON_LIBS) $(INTLLIBS) $(GLIB_LIBS) \
 	$(GOBJECT_LIBS) $(GDK_LIBS) \
 	$(top_builddir)/common/libgdmcommon.a $(X_LIBS) \
-	$(XINERAMA_LIBS) $(XDMCP_LIBS) $(LIBWRAP_LIBS) -lXau -lX11 \
+	$(XINERAMA_LIBS) $(XDMCP_LIBS) $(LIBWRAP_LIBS) -lXau -lX11 -lm \
 	-lXext $(NULL) $(am__append_3)
 sbin_SCRIPTS = gdm
 CLEANFILES = gdm
diff --git a/gui/Makefile.in b/gui/Makefile.in
index 1ba2ebc..9ecc0a0 100644
--- a/gui/Makefile.in
+++ b/gui/Makefile.in
@@ -551,8 +551,10 @@ gdmchooser_LDADD = \
 	$(XINERAMA_LIBS)	\
 	$(X_LIBS)		\
 	$(XDMCP_LIBS)		\
+	-lXau			\
 	-lX11			\
 	-lfontconfig		\
+	-lm			\
 	$(NULL)
 
 gdmlogin_LDADD = \
@@ -571,8 +573,10 @@ gdmlogin_LDADD = \
 	$(X_EXTRA_LIBS)		\
 	$(XINERAMA_LIBS)	\
 	$(X_LIBS)		\
+	-lXau			\
 	-lX11			\
 	-lfontconfig		\
+	-lm			\
 	$(NULL)
 
 
@@ -599,6 +603,7 @@ gdmsetup_LDADD = \
 	-lXau			\
 	-lX11			\
 	-lfontconfig		\
+	-lm			\
 	$(NULL)
 
 gdmphotosetup_LDADD = \
@@ -612,8 +617,10 @@ gdmphotosetup_LDADD = \
 	$(INTLLIBS)		\
 	$(EXTRA_SOCKET_LIB)	\
 	$(EXTRA_NSL_LIB)	\
+	-lXau			\
 	-lX11			\
 	-lfontconfig		\
+	-lm			\
 	$(top_builddir)/common/libgdmcommon.a \
 	$(NULL)
 
@@ -630,6 +637,7 @@ gdmXnestchooser_LDADD = \
 	-lXau			\
 	-lX11			\
 	-lfontconfig		\
+	-lm			\
 	$(top_builddir)/common/libgdmcommon.a \
 	$(NULL)
 
@@ -647,6 +655,7 @@ gdmflexiserver_LDADD = \
 	-lX11			\
 	-lXau			\
 	-lfontconfig		\
+	-lm			\
 	$(NULL)
 
 gdmdynamic_LDADD = \
@@ -663,6 +672,7 @@ gdmdynamic_LDADD = \
 	-lX11			\
 	-lXau			\
 	-lfontconfig		\
+	-lm			\
 	$(NULL)
 
 Settingsdir = $(datadir)/gdm/applications
diff --git a/gui/greeter/Makefile.in b/gui/greeter/Makefile.in
index b611340..9be2498 100644
--- a/gui/greeter/Makefile.in
+++ b/gui/greeter/Makefile.in
@@ -423,6 +423,7 @@ gdmgreeter_LDADD = \
 	$(X_EXTRA_LIBS)		\
 	$(XINERAMA_LIBS)	\
 	$(X_LIBS)		\
+	-lXau			\
 	-lX11			\
 	-lfontconfig