[rules-users] The projects in the reactor contain a cyclic reference

[Mulcahy, Lawrence]

I downloaded the Drools source code (drools-5.0-src.zip) and
I'm trying to build Drools according to the instructions in
the README.txt.

Typing this command:

mvn -Declipse -Ddocumentation clean install

I get this error

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] The projects in the reactor contain a cyclic reference: Edge between 'Vertex{label='org.drools:docbook-xsl-drools'}' and 'Vertex{label='org.drools:docbook-style-drools'}' introduces to cycle in the graph org.drools:docbook-style-drools --> org.drools:docbook-xsl-drools --> org.drools:docbook-style-drools
[INFO] ------------------------------------------------------------------------
[INFO] For more information, run Maven with the -e switch
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3 seconds
[INFO] Finished at: Tue Sep 15 10:19:49 MDT 2009
[INFO] Final Memory: 10M/81M
[INFO] ------------------------------------------------------------------------

OS: Ubuntu 9.04
JDK: Sun 1.6.14 for x86_64
Maven version: 2.2.1

More generally, is there documentation anywhere about the
build architecture and infrastructure?  It's my first time trying
Maven.

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