Index: libxfcegui4-4.8.1/libxfcegui4/Makefile.am
===================================================================
--- libxfcegui4-4.8.1.orig/libxfcegui4/Makefile.am	2011-09-05 21:06:48.451070643 +0200
+++ libxfcegui4-4.8.1/libxfcegui4/Makefile.am	2011-09-05 21:07:08.935197556 +0200
@@ -183,7 +183,8 @@
 	$(LIBX11_LIBS)							\
 	$(LIBXFCE4UTIL_LIBS)						\
 	$(LIBSTARTUP_NOTIFICATION_LIBS)					\
-	$(PLATFORM_LIBS)
+	$(PLATFORM_LIBS)						\
+	-lm
 
 libxfcegui4_la_CFLAGS =							\
 	$(NETK_CFLAGS)							\