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List Archive: gentoo-java
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From: "Peter B. West" <lists@...>
Subject: Re: Question about Sun-Jdk 1.4.2.10
Date: Wed, 30 Nov 2005 22:39:21 +0000
Joshua Nichols wrote:
>>So who wants to run a 1.4 JDK?  And what, exactly, prevents anything
>>from being compiled under 1.5?  The only thing I can think of is the
>>user of the newly reserved word 'enum'.  Big deal.  How long has 1.5
>>been around now?
> 
> Have you actually tried using a 1.5 JDK to emerge your system? I'm
> guessing not, because xerces, xalan, and dom4j won't compile with 1.5,
> and they are pretty critical XML libraries that lots of things use.
> 

See my response to the "ant won't compile" message.  Same story, at 
least partially.

Download sources for Xerces-J. Read README, which tells me I need the 
tools.  Download the tools.  Extract "in the same directory."  What does 
that mean? Read build.sh. Ah, tools is in the Xerces directory. Do that. 
  Run sh build.sh jars. Result:

BUILD SUCCESSFUL
Total time: 13 seconds

Do I really have to do this with Xalan as well?  Java 5 ships with 
xerces as its parser, in place of crimson. That's in the incompatibility 
notes. It ships with xalan, and defaults to using xsltc. Also in the 
incompatibility notes.  (And xalan 2.7.0 has one reported bug that I 
know of that causes problems with netbeans 5.0).

The simple fact is that I can pick up any of the binaries and they will 
almost certainly run without problems.  There are a handful of obscure 
binary-level incompatibilities, but the only problem I have encountered 
is the netbeans bug I mentioned; not an incompatibility.

Peter

> Actually, there are a number of incompatibilities:
> http://java.sun.com/j2se/1.5.0/compatibility.html#incompatibilities
> 
> 
> 
>>My perception is that there is only an ideological impediment to going
>>with 1.5.  That is that it will be a long time before the
>>Stallman-approved JVMs support 1.5.  So, the Java herd on Gentoo Stalls
>>the adoption of 1.5, just to "prove" that 1) you don't need it, and 2)
>>it's a very bad thing.  Or at least it will be until the "free as in
>>slaves to ideology" crowd get their act together.  Thanks for nothing.
> 
> 
> Somehow, I must have missed the conspiracy memo.... Seriously though,
> where the heck did this come from?
> 
> I think you're seriously overestimating the manpower working on Java
> support for Gentoo. There are now 10 developers (I'm a recent addition),
> with 3 currently on leave. Of those 7, most of them have some sort of
> life outside of Gentoo. With some 300+ packages to maintain with some
> 200 outstanding bugs, there isn't a lot of time/effort remaining for new
> and exciting stuff.
> 
> Plus, it's not like there hasn't been work towards 1.5 support. See the
> 1.5 metabug: http://bugs.gentoo.org/show_bug.cgi?id=65937
> Additionally, Thomas (axxo) has been working on an overlay for the past
> six months or so to support 1.5, as was previously announced
> (http://article.gmane.org/gmane.linux.gentoo.java/605). He must not have
> gotten the memo either.
> 
> 
> 
> 
> So how can one help with supporting 1.5? Testing and provididing
> feedback on axxo-overlay would be the most useful. There are some
> details on http://www.gentoo.org/proj/en/java/ but I hope to add more
> details sometime this evening.
> 
> Regards,
> Josh


-- 
Peter B. West <http://cv.pbw.id.au/>
Folio <http://defoe.sourceforge.net/folio/>
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Replies:
Re: Question about Sun-Jdk 1.4.2.10
-- Greg Tassone
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Re: Question about Sun-Jdk 1.4.2.10
-- Peter B. West
Re: Question about Sun-Jdk 1.4.2.10
-- Joshua Nichols
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Updated Jun 17, 2009

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