$FreeBSD$

--- build.xml.orig
+++ build.xml
@@ -152,7 +152,7 @@
     <ant dir='doc/hrc-ref' antfile='build.xml' target='all'/>
   </target>
 
-  <target name="doc" depends='init, doc.javadoc, doc.doxygen, doc.hrc-ref' description='Builds all the documentation files'>
+  <target name="doc" depends='init, doc.javadoc, doc.doxygen' description='Builds all the documentation files'>
   </target>
 
   <target name="doc.javadoc" depends='init' description='Generates Java classes documentation' unless='doc.javadoc.required'>