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From "Rick Hillegas (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-1078) Be able to build Derby when JAVA_HOME is set 1.6
Date Wed, 19 Apr 2006 19:02:11 GMT
    [ http://issues.apache.org/jira/browse/DERBY-1078?page=comments#action_12375185 ] 

Rick Hillegas commented on DERBY-1078:
--------------------------------------

Beautiful. It's a lot of edits but they have a familiar rhythm to them. Thanks for all this
work! After applying the patch, I successfully built under 1.4, 1.5, and 1.6. After each build,
I successfully ran the grantRevoke test under 1.4 and the jdbc40 suite under 1.6.

> 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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