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https://issues.apache.org/jira/browse/LUCENE-2488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12875887#action_12875887
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Michael McCandless commented on LUCENE-2488:
--------------------------------------------
This looks like a great step forward -- we can now [optionally; off by default]
assert those modules (core, contribs) that "claim" to be <= JDK X in fact
compile & pass tests with JDK X.
So we now default to a hard error.... but if you want (eg you are the RM), you
can pass -Dforce.jdk14.build=true, and skip those contribs requiring > X. I
agree the default should be brittle (hard error).
Can we use this for Solr/Lucene on trunk/3x? Ie Solr requires JDK >= 1.6, but
Lucene is >= 1.5; we don't want 1.6 features to accidentally sneak into
Lucene...
> Fix 2.9 contrib builds to succeed when JDK 1.4 is used (leaving out contribs
> that require 1.5)
> ----------------------------------------------------------------------------------------------
>
> Key: LUCENE-2488
> URL: https://issues.apache.org/jira/browse/LUCENE-2488
> Project: Lucene - Java
> Issue Type: Bug
> Components: Build
> Affects Versions: 2.9, 2.9.1, 2.9.2
> Reporter: Uwe Schindler
> Assignee: Uwe Schindler
> Fix For: 2.9.3
>
> Attachments: LUCENE-2488.patch, LUCENE-2488.patch
>
>
> When you build and test Lucene 2.9 with Java 1.4, building and testing of
> contrib fails. This patch fixes this to repect the current compiler version
> and disables all contribs that need Java 1.5 by checking their javac.source
> property.
> This patch can be ported to 3.x or trunk, when 1.6 contribs will appear.
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