Index: clp-1.10.1/doxydoc/doxygen.conf
===================================================================
--- clp-1.10.1.orig/doxydoc/doxygen.conf	2006-06-01 18:57:08.000000000 +0000
+++ clp-1.10.1/doxydoc/doxygen.conf	2009-09-05 05:45:01.000000000 +0000
@@ -610,7 +610,7 @@
 # toolkit from AT&T and Lucent Bell Labs. The other options in this section 
 # have no effect if this option is set to NO (the default) 
 
-HAVE_DOT               = NO
+HAVE_DOT               = YES
 
 # If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen 
 # will generate a graph for each documented class showing the direct and 
