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From "Knut Anders Hatlen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4841) Improve projecthelp for the top level Derby build script
Date Wed, 13 Oct 2010 12:10:36 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12920509#action_12920509

Knut Anders Hatlen commented on DERBY-4841:

> In the past, I seem to remember there was some issue with running
> all three "clobber all buildjars" in one ant invocation. Is that
> safe to do now?

I'm not sure which issue you're referring to, but I have noticed that

  ant insane
  ant clobber all buildjars


  ant insane
  ant clobber
  ant all buildjars

behave differently. The first sequence of commands will result in a
non-debug build, whereas the second sequence of commands will result
in a debug build, even though they both invoke insane, clobber, all
and buildjars in the same order.

I don't know if it's a bug or intended behaviour, but if this is the
issue you're referring to, it is still present on trunk.

> "all" is also buggy, in that it doesn't always detect modified
> sources. Should such caveats be mentioned in this help, or is it
> sufficient to mention it in BUILDING.html?

If there are problems with the dependency tracking in "all", it would
be good to have those tracked in a JIRA issue. Incremental builds are
still significantly faster than full builds, so I think it's important
to have that working reliably.

> Improve projecthelp for the top level Derby build script
> --------------------------------------------------------
>                 Key: DERBY-4841
>                 URL: https://issues.apache.org/jira/browse/DERBY-4841
>             Project: Derby
>          Issue Type: Improvement
>          Components: Build tools
>    Affects Versions:
>            Reporter: Rick Hillegas
>         Attachments: derby-4841-01-aa-ricksPicks.diff
> Ant scripts are supposed to be self-describing. The following command is supposed to
describe the public targets in the current directory:
>     ant -projecthelp
> Here is the output of this command for the top level build script today:
> Main targets:
>  checkCompilerLevel     Make sure compiler level is Java 5 level or higher.
>  class_size_catalog     create the class size catalog -- a java file
>  createBranch           Create a new branch (both docs and code)
>  parsers                Build the parsers
>  release                Build the release distributions
>  setCompilerProperties  Set the ant variables which identify the compiler classpaths.
Remove the autosetProps logic when this target becomes mandatory.
>  setInitialProperties   Set the initial properties for this build script. This duplicates
the property setting block in setCompilerProperties. Once we make setCompilerProperties mandatory,
this target should be removed.
>  state                  Build SanityState.java
> Default target: buildsource
> That does not seem like the list of public targets to me. This JIRA can be used as a
place to anchor work which we do on improving the user documentation for our top level build
> I propose to make some changes to build.xml. Others are welcome to pile on. Here's how
it works:
> 1) The public targets are the ones which have "description" attributes.
> 2) So to make a target public, fill in a "description" attribute for it.
> 3) And to hide a target, move its "description" text into an introductory comment bracketed
by "<!--" and "-->"

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