The error goes away if I leave out –Ddocumentation.

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From: Mulcahy, Lawrence
Sent: Wednesday, October 07, 2009 10:38 AM
To: 'rules-users@lists.jboss.org'
Subject: Error trying to build Drools 5.0 from source

Anyone know what this means?  I downloaded drools-5.0-src.zip

from http://www.jboss.org/drools/downloads.html.  I extracted it,

cded into the top directory and after perusing the README typed

$ mvn -Declipse -Ddocumentation clean install

The output:

[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: 4 seconds

[INFO] Finished at: Wed Oct 07 10:33:21 MDT 2009

[INFO] Final Memory: 10M/80M

[INFO] ------------------------------------------------------------------------