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Date: Tue, 19 Oct 2010 18:35:26 -0400 (EDT)
From: "Dag H. Wanvik (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-4845) Improve the dependency tracking for
 our build targets
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    [ https://issues.apache.org/jira/browse/DERBY-4845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12922760#action_12922760 ] 

Dag H. Wanvik commented on DERBY-4845:
--------------------------------------

Thanks, Knut! Another build anomaly I noticed:
a) ant clobber
b) introduce a syntax error to a file in org.apache.derby.iapi.util, e.g. ByteArray.java
c) ant all, build stops
d) correct error
e) ant all now fails with this error:
C:\cygwin\home\dag\java\sb\sb1\generated\java\org\apache\derby\impl\sql\compile\SQLParser.java:25: package org.apache.derby.iapi.sql does not exist
    [javac] import org.apache.derby.iapi.sql.Statement;

f) ant clobber all makes all ok again

> Improve the dependency tracking for our build targets
> -----------------------------------------------------
>
>                 Key: DERBY-4845
>                 URL: https://issues.apache.org/jira/browse/DERBY-4845
>             Project: Derby
>          Issue Type: Bug
>          Components: Build tools
>            Reporter: Rick Hillegas
>         Attachments: check-build.ksh, tools-i18n.diff
>
>
> Derby is supposed to have an incremental build. That is, if you change a file, then the following command should recompile the file:
>    ant all
> There are several places in the graph of Derby build targets where this is not true. If you change a file in certain packages, a subsequent "ant all" won't notice the change. This issue is a place where we can track these bugs.

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