--- ./gnome-panel/Makefile.in.orig
+++ ./gnome-panel/Makefile.in
@@ -582,7 +582,7 @@
 	$(top_builddir)/gnome-panel/libpanel-util/libpanel-util.la			\
 	$(PANEL_LIBS)									\
 	$(XRANDR_LIBS)									\
-	$(X_LIBS)
+	$(X_LIBS) -lm
 
 gnome_panel_LDFLAGS = -export-dynamic
 gnome_desktop_item_edit_SOURCES = \