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Date: Sat, 7 Sep 2013 21:32:51 +0000 (UTC)
From: "Steve Rowe (JIRA)" <jira@apache.org>
To: legal-discuss@apache.org
Message-ID: <JIRA.12667453.1378572733162.97699.1378589571832@arcas>
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Subject: [jira] [Commented] (LEGAL-177) About using third-party software
 under GPL
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    [ https://issues.apache.org/jira/browse/LEGAL-177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13761127#comment-13761127 ] 

Steve Rowe commented on LEGAL-177:
----------------------------------

I'm a committer on the JFlex project.

The Maven JFlex plugin is a build-time-only tool, so as Larry implies, source generated by it is not incompatible with the Apache license, since the JFlex license is not applicable to the source generated by JFlex.

FWIW, the JFlex founder (Gerwin Klein) intends to change the JFlex (and its Maven plugin) license to BSD in the next release (1.5).
                
> About using third-party software under GPL
> ------------------------------------------
>
>                 Key: LEGAL-177
>                 URL: https://issues.apache.org/jira/browse/LEGAL-177
>             Project: Legal Discuss
>          Issue Type: Question
>            Reporter: Leonidas Fegaras
>
> Apache MRQL (incubating) is planning to release its first release soon and we want to check if the third-party software that we use has compatible licenses. Our current NOTICE file is included below. My question is about JFlex and maven-jflex-plugin. They both have Gnu GPL licenses which are not compatible with Apache License 2.0. But JFlex license indicates "The code generated by JFlex inherits the copyright of the specification it was produced from. If it was your specification, you may use the generated code without restriction." We simply use JFlex to generate code (scanners). Can we use this software in MRQL?
> Thanks you
> Our NOTICE file:
> Apache MRQL
> Copyright 2013 The Apache Software Foundation
> This product includes software developed at
> The Apache Software Foundation (http://www.apache.org/),
> including, but not limited to:
>  - Apache Hadoop
>  - Apache Hama
>  - Apache Spark (incubating)
> Apache MRQL Subcomponents:
> The Apache MRQL project contains subcomponents with separate copyright
> notices and license terms. Your use of the source code for the these
> subcomponents is subject to the terms and conditions of the following
> licenses. 
> This product includes/uses JLine (http://jline.sourceforge.net/),
> Copyright (c) 2002-2006, Marc Prud'hommeaux <mwp1@cornell.edu>.
> Project License: http://jline.sourceforge.net/license.html
> This product uses JFlex - The Fast Scanner Generator for Java (http://jflex.de/)
> Copying, Warranty & License: http://jflex.de/copying.html
> This product uses the Maven JFlex Plugin (http://jflex.sourceforge.net/maven-jflex-plugin/)
> Project Licence: http://jflex.sourceforge.net/maven-jflex-plugin/license.html
> This product includes/uses the CUP Parser Generator (http://www2.cs.tum.edu/projects/cup/)
> Copyright 1996-1999 by Scott Hudson, Frank Flannery, C. Scott Ananian

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