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From "Steven Rowe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-3337) avoid building jar files unless necessary in build
Date Tue, 26 Jul 2011 15:39:09 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-3337?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steven Rowe updated LUCENE-3337:
--------------------------------

    Attachment: LUCENE-3337.patch

{quote}
I plan on looking next at the utility of the *.compiled & *.uptodate property passing
scheme - you mentioned on #lucene IRC that it didn't seem to be having any effect on the build.
{quote}

The properties were being passed in as intended, but the {{<uptodate>}} tasks were still
running, since their execution was not dependent on the already-defined values of {{\*.uptodate}}
output properties.

The attached version of the patch, which includes Robert's latest patch, wraps the {{<uptodate>}}
tasks in {{check-\*\-uptodate}} targets, and makes the {{compile-\*}} targets depend on them,
so that the {{<uptodate>}} tasks only run when the corresponding {{\*.update}} property
value has not previously been set.

The only problem with this approach is that the {{\*.jar}} properties aren't constructed properly,
since the property passing scheme only works one-way (properties are passed into {{<ant>}}
invocations, but not back out of them).  I worked around this problem by defining the {{\*.jar}}
properties statically.

My build times now:

||task||trunk||patch||patch w/property passing optimizations||
|ant example (clean checkout)|180s|119s|93s|
|ant example (already compiled)|132s|61s|55s|

This shaves a few more seconds off my build time.

> avoid building jar files unless necessary in build
> --------------------------------------------------
>
>                 Key: LUCENE-3337
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3337
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: general/build
>    Affects Versions: 3.4, 4.0
>            Reporter: Robert Muir
>         Attachments: LUCENE-3337.patch, LUCENE-3337.patch, LUCENE-3337.patch, LUCENE-3337.patch
>
>
> This causes the build to be slow, we can avoid it in lots of cases (e.g. ant test)

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