Re: Setup a free java development environment
On Mon, 2005-21-03 at 07:35 +0100, Michael Koch wrote:
> On Sun, Mar 20, 2005 at 07:59:43PM -0500, Grzegorz B. Prokopski wrote:
> > On Sat, 2005-19-03 at 09:36 -0500, Barry Hawkins wrote:
> > > -----BEGIN PGP SIGNED MESSAGE-----
> > > Hash: SHA1
> > >
> > > Eric Lavarde wrote:
> > > [...]
> > > | So, is there somewhere a document that explains how to setup a free java
> > > | development environment in parallel to a Sun Java environment, limiting
> > > | the risk of cross-pollution? Plus some explanations on which free
> > > | VM/tools are good/best for what?
> > > [...]
> > > Eric,
> > > ~ Thanks for your interest in free java and its use with Debian. This
> > > is a good question; I don't think we have done this yet. The
> > > free-java-sdk is probably the closest thing, but that is primarily a
> > > package that pulls in a collection of free java tools and creates
> > > entries via update-alternatives for common java programs.
> >
> > Not exactly. Or even "not really".
> >
> > As you and other noticed the update-alternatives do not do their job
> > well in java environment (for reasons I do not intend to discuss).
> >
> > The free-java-sdk package does provide a script that helps setting your
> > alternatives, but free-java-sdk itself does not always use these
> > alternatives.
> >
> > If you look at the Depends: of this package and at the content of
> > /usr/lib/fjsdk/bin *scripts* (they are not symlinks!) you'll soon
> > find out that the associations are always the following:
> >
> > jar -> fastjar
> > java -> java-sablevm
> > javac -> jikes-sablevm
> > javadoc -> gjdoc
> > javah -> javah-cp (from classpath-tools package)
> > javap -> javap-cp (from classpath-tools package)
> > serialver -> serialver-cp (from classpath-tools package)
> >
> > Why's that? Exactly because of the "alternatives hell" you asked
> > about in your previous message on Wednesday. This is a setup that
> > *I* know works, and therefore has high chances of working for you.
>
> You know it works in the circumstances you tested it I know at least
> jikes java javah from cp-tools are unsable in some case. Sure, this can
> be fixed but at least for jikes I dont see the light at the end of the
> tunnel.
Did you find cases where cp-tools and javah are not usable? Please file
a bugreport then so that I could fix that.
Your note about jikes seems vague. I do not understand what you meant
by that.
> The problem is that the user *CAN* change the links with java-alt-setup.
> Its some kind of alternatives system, just not the normal one in
> /etc/alternatives. This means we will not have a predfined build environment
I think you have not even looked at java-alt-setup.
It's just a script that invokes update-alternatives for all java-related
alternatives I know may exist. There's no "secondary" alternatives
system in free-java-sdk. This is only a helper I found useful myself.
> anymore. I is better to build depend on sablevm, kaffe or whatever directly
> for the the debian source packages. For users free-java-sdk is very good and
> easy to use.
Are you speaking from experience? In what way the free-java-sdk did not
work for you when building a package that build-depended on it? Under
what circumstances have you tested it?
I have not heard of any problems and got no bugreports from you.
OTOH I know that free-java-sdk does work for many people.
Grzegorz B. Prokopski
PS: A new version of free-java-sdk should be in the unstable tomorrow.
--
Grzegorz B. Prokopski <gadek@sablevm.org>
SableVM - Free, LGPL'ed Java VM http://sablevm.org
Why SableVM ?!? http://sablevm.org/wiki/Features
Debian GNU/Linux - the Free OS http://www.debian.org
Reply to: