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From "Andrew McIntyre (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-1078) Be able to build Derby when JAVA_HOME is set 1.6
Date Thu, 20 Apr 2006 01:25:08 GMT
    [ http://issues.apache.org/jira/browse/DERBY-1078?page=comments#action_12375226 ] 

Andrew McIntyre commented on DERBY-1078:
----------------------------------------

Sanity check on j9, jdk13, and jdk142 look good. Committed derby-1078.diff to trunk with revision
395458. Rick, please resolve and/or close if this takes care of this issue.

> Be able to build Derby when JAVA_HOME is set 1.6
> ------------------------------------------------
>
>          Key: DERBY-1078
>          URL: http://issues.apache.org/jira/browse/DERBY-1078
>      Project: Derby
>         Type: Improvement

>   Components: Build tools
>     Versions: 10.2.0.0
>     Reporter: Rick Hillegas
>      Fix For: 10.3.0.0
>  Attachments: derby-1078.diff
>
> Currently, the 1.4 compiler is used to build most of Derby. We use the 1.6 compiler to
(optionally) build the JDBC4 support. If you try to build Derby in a shell window with a 1.6
JAVA_HOME, the 1.4 bits will fail to build. This is because those bits do not satisfy the
JDBC4 contract. In addition, even if you could build those bits under 1.6, the 1.6 class files
would fail to load on a 1.4 vm.
> We need to be able to use 1.6 as our default build environment but still generate jar
files which run on 1.4 and 1.5. There may be compiler switches which allow this. If not, building
in a 1.6 environment could fault in the 1.4 compiler as necessary.

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