[jira] Commented: (DERBY-190) Derby build should be incremental

     [ 
http://issues.apache.org/jira/browse/DERBY-190?page=comments#action_61853 ]
     
Jeremy Boynes commented on DERBY-190:
-------------------------------------

The ant task the build uses to compile is incremental but does not check 
dependencies. Thus a second build will recompile files that have changed but 
not files that depend on them that have not been touched. This works most of 
the time.

The clobber (and clean which removes the object code but not generated source 
code) targets would typically be run after an update, before a testrun (and 
hence before commit), or when you see strange AbstractMethodErrors and the like.

> Derby build should be incremental
> ---------------------------------
>
>          Key: DERBY-190
>          URL: http://issues.apache.org/jira/browse/DERBY-190
>      Project: Derby
>         Type: Improvement
>   Components: Build tools
>     Versions: 10.0.2.2
>     Reporter: David Van Couvering

>
> You should not have to clobber and rebuild from scratch each time you update 
> or modify your source.  This is time-consuming and affects overall 
> productivity.    

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