How to check out the openjdk source code from the mercurial repositories

[Dr Andrew John Hughes]

On 06:40 Fri 11 Mar     , David Holmes wrote:
> Fredrik Öhrström said the following on 03/10/11 20:22:
> > I think it is important that a recent stock mercurial install
> > can check out the full openjdk with a single clone
> > command.
> > 
> > I.e. you should not have to install special extensions just
> > to get the source code.
> 
> That's a bit of a leading/loaded question ;-)
> 
> > There are several ways this can be solved. But before
> > we dive into discussions on the possible alternatives,
> > I would like to see who else think it is a good idea.
> 
> Stepping up a level, an initial download of openjdk need not involve
> using mercurial at all. You can simply download a stable snapshot as a
> tar file; 

This makes much more sense as a starting point for new users over having
to handle Mercurial and checkouts.  It works fine if you just want to _use_
the latest and greatest, not hack on it.

> or download an install script that will do whatever is
> necessary behind the scenes to get a complete openjdk.

I don't know how that would work.  I guess IcedTea comes close to this idea
in that it detects the needed settings for the build, rather than them all
having to be passed as make variables.

> Personally I'd
> like to see that include the basic build tools as well - in which case I
> don't care about "special extensions" as I just get a working toolkit. 

What do you mean by this?  Can you give an example?

> I
> think in the scheme of things the process of getting the source code for
> the openjdk is the easiest part of the process. Depending on your
> platform setting up mercurial so that you could do that "single clone
> command" may be a far greater problem. And setting up the build
> environment an order of magnitude greater again.
> 
> > Clearly, comments from people outside of Oracle
> > are the most important!
> 
> Clearly. :)
> 

Well as a person outside Oracle, I'd agree that getting a checkout is the
least of my problems.  Configuring builds and fixing bugs is a much greater
problem than having to write a few extra 'hg clone' commands to get a full
checkout.  It's just a matter of using a for loop or cobbling together a
shell script as Kelly has done.  Trivial stuff for anyone planning to
build or hack on OpenJDK.

> Cheers,
> David
> 
> > (When the source is checked out, then there can be
> > mercurial extensions in the checked out source code
> > for example jcheck that assists in sanity tests before
> > committing. So this does not limit the actual extensions
> > used later. Only that we should not "improve" on the versioning
> > part of mercurial.)
> > 

jcheck is server-side.  It needs to be released as Free Software not
so we can all run it but so we can see what the heck it's doing and
fix issues with it.

> > //Fredrik
> 

-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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