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https://issues.apache.org/jira/browse/DERBY-5469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13135448#comment-13135448
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Knut Anders Hatlen commented on DERBY-5469:
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I got a chance to test the build time with JDK 6 vs JDK 7 on Ubuntu too, and in
my experiments there was a significant difference: 5 min 20 sec vs 8 min 50 sec
when I ran "ant -q all". If I modified all the build.xml files and specified
source and target level 1.5 (or 1.6 or 1.7) instead of 1.4, it improved to 5
min 50 sec. So it definitely looks like there's something that's slower when
compiling code targeted for 1.4 with JDK 7.
> Make it possible to build Derby if you are on Mac OS X and your JDK is JDK 7
> ----------------------------------------------------------------------------
>
> Key: DERBY-5469
> URL: https://issues.apache.org/jira/browse/DERBY-5469
> Project: Derby
> Issue Type: Improvement
> Components: Build tools
> Reporter: Rick Hillegas
> Assignee: Rick Hillegas
> Attachments: derby-5469-01-ae-add17andJavadoc.diff,
> derby-5469-01-af-dontSetUprevVariables.diff, derby-5469-01-ag-cleanedUp.diff
>
>
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