diff -up gnome-panel-2.29.6/configure.in.libs gnome-panel-2.29.6/configure.in
--- gnome-panel-2.29.6/configure.in.libs	2010-02-11 23:09:20.086009297 -0500
+++ gnome-panel-2.29.6/configure.in	2010-02-11 23:35:24.292035257 -0500
@@ -251,14 +251,18 @@ PKG_CHECK_MODULES(X, x11 xau, :, [
   X_LIBS="$X_PRE_LIBS $X_LIBS -lX11 -lXau $X_EXTRA_LIBS"
 ])
 
-AC_SUBST(X_LIBS)
-
 dnl X RANDR extension
 
 if $PKG_CONFIG --exists "xrandr >= 1.2.0" ; then
 	AC_DEFINE(HAVE_RANDR, 1, [Have the Xrandr extension library])
+        PKG_CHECK_MODULES(RANDR, xrandr)
+        X_LIBS="$X_LIBS $RANDR_LIBS"
 fi
 
+AC_SUBST(X_LIBS)
+
+LIBS="$LIBS -lm"
+
 dnl IDL directories
 
 ORBIT_IDL="`$PKG_CONFIG --variable=orbit_idl ORBit-2.0`"