[gentoo-java] Question about Sun-Jdk 1.4.2.10

[gentoo-java] Question about Sun-Jdk 1.4.2.10

[Tomasz Buchert]

Hi!
I'm new in Gentoo and new in Java. I have already emerged Blackdown JDK 
but I'd like to emerge Sun JDK too. And here the problem begins.
I'm not interested in JDK 1.5 (it's considered unstable as far as I 
know). I believe that 1.4 will be enough for a novice. On my portage 
this package is masked. Is it risky to emerge it? If it is not why it is 
masked?

Thank in advance
Tomasz Buchert
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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Eddy Mulyono]

On 11/28/05, Tomasz Buchert <thinred@o2.pl> wrote:
> Hi!
> I'm new in Gentoo and new in Java. I have already emerged Blackdown JDK
> but I'd like to emerge Sun JDK too. And here the problem begins.
> I'm not interested in JDK 1.5 (it's considered unstable as far as I
> know). I believe that 1.4 will be enough for a novice. On my portage
> this package is masked. Is it risky to emerge it? If it is not why it is
> masked?

At the time of this writing (2005-Nov-28 15:23 Pacific),
sun-jdk-1.4.2.10 marked unstable/testing (~x86), not masked.

This usually happens to new versions. They come into Portage as
testing. If no bugs are filed after certain period, they go into
stable.

Hope that helps,

-Eddy

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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Greg Tassone]

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On Tue, 2005-11-29 at 01:01 +0100, Tomasz Buchert wrote:
> Hi!
> I'm new in Gentoo and new in Java. I have already emerged Blackdown JDK 
> but I'd like to emerge Sun JDK too. And here the problem begins.
> I'm not interested in JDK 1.5 (it's considered unstable as far as I 
> know).

FYI:  There is nothing "unstable" about JDK 1.5 (or Java 5).  It is the
recommended "production" platform/runtime of choice for many large
vendors and IT shops, and has been for some time now.  It has simply
been package-masked here at Gentoo because there have been some
lingering ebuilds that didn't compile cleanly with it.  Hopefully it is
going to be unmasked VERY soon.


>  I believe that 1.4 will be enough for a novice. On my portage 
> this package is masked. Is it risky to emerge it? If it is not why it is 
> masked?

I think Eddy answered this for you already, but let us know if you still
have questions/concerns.

Greg


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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Petteri Räty]

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Greg Tassone wrote:
> 
> FYI:  There is nothing "unstable" about JDK 1.5 (or Java 5).  It is the
> recommended "production" platform/runtime of choice for many large
> vendors and IT shops, and has been for some time now.  It has simply
> been package-masked here at Gentoo because there have been some
> lingering ebuilds that didn't compile cleanly with it.  Hopefully it is
> going to be unmasked VERY soon.
> 

It also by default produces class files that are not compatible with
earlier versions etc.

You can safely make 1.5 the user vm using java-config -s. But just be
sure you don't ever set it as the system vm.

Regards,
Petteri

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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Greg Tassone]

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On Tue, 2005-11-29 at 13:50 +0200, Petteri Räty wrote:
> Greg Tassone wrote:
> > 
> > FYI:  There is nothing "unstable" about JDK 1.5 (or Java 5).
...
>  It has simply
> > been package-masked here at Gentoo because there have been some
> > lingering ebuilds that didn't compile cleanly with it.  Hopefully it is
> > going to be unmasked VERY soon.
> > 
> 
> It also by default produces class files that are not compatible with
> earlier versions etc.
...
> You can safely make 1.5 the user vm using java-config -s. But just be
> sure you don't ever set it as the system vm.

Very true.  Just to clear up any confusion for others on the list, this
means that if you are trying to run a 1.5 JDK as the primary on your
system at the same time you have a 1.4 JDK running, the 1.4 JDK will be
unable to use most of the code compiled from the 1.5 JDK (by default).

Since most packages on the Gentoo distro compile themselves from source
(Java included), having a 1.5 JDK as your *system VM* means that your
Java applications would be compiled so that ONLY Java 5 (and higher)
runtimes could use the applications.  This is a show-stopper for those
still running a 1.4 JDK (at least for non-developers, who should know
how to deal with this stuff anyway):

Choices:

      * Run only 1.5 or higher on your system (with no intention of ever
        going back down).  Note that as of a while ago certain packages
        in the Portage tree still required 1.4, so this approach may
        preclude installing those packages from Portage.
 --OR--
      * Take Petteri's advice and leave 1.4 as the system VM, and set
        your "user" VM to 1.5 (or higher) if desired.

HTH to clarify...

Greg

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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Daigo Kobayashi]

Hi.

I want to use Java 5.0 on gentoo. But now it marks unstable.
Is there any task that I can help to unmask Java 5.0? If possible
I want to try.

By the way, I'm really sorry to send e-mail to Greg's personal address.
So I send same mail to list.

Best regards,
Daigo Kobayashi

> FYI:  There is nothing "unstable" about JDK 1.5 (or Java 5).  It is the
> recommended "production" platform/runtime of choice for many large
> vendors and IT shops, and has been for some time now.  It has simply
> been package-masked here at Gentoo because there have been some
> lingering ebuilds that didn't compile cleanly with it.  Hopefully it is
> going to be unmasked VERY soon.


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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Greg Tassone]

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On Wed, 2005-11-30 at 00:35 +0900, Daigo Kobayashi wrote:
> Hi.
> 
> I want to use Java 5.0 on gentoo. But now it marks unstable.
> Is there any task that I can help to unmask Java 5.0? If possible
> I want to try.

OK, here's how this is done.  It's actually easy but I'll include
specific details for you, just in case you're new to this:

      * If it doesn't already exist, create the directory "/etc/portage"

      * Then create the file "/etc/portage/package.unmask" if it doesn't
        already exist.

      * Add the following line(s) to that file (comments may be
        omitted):

#----------------
dev-java/sun-jdk
  # (or whatever vendor package you want -- use the full name)
dev-java/java-sdk-docs
  # (if you have your "doc" USE flag on)
#----------------

      * The above removes the package mask added by the Gentoo
        developers.  However, since the sun-jdk 1.5 package is also
        marked unstable ("~"), you may need to enable the "testing"
        profile for these packages as well.  Unless your system is set
        to ~ you will need to perform the following:

      * If it doesn't already exist, create the file
        "/etc/portage/package.keywords".

      * Add the following lines to that file, where "~arch" is the
        unstable flag for your architecture (e.g., most likely ~x86 or
        ~amd64).  Comments may be omitted, of course:

#----------------
dev-java/sun-jdk ~arch
dev-java/java-sdk-docs ~arch
#----------------


That should do it.  You can now emerge the package with a standard
command:

emerge -av dev-java/sun-jdk


** VERY IMPORTANT **

Unless you know what you're doing, I strongly recommend that you leave
your system VM set to a 1.4 JDK/runtime.  Your message didn't indicate
if you have one installed, so I'll assume you are using Blackdown (which
is 1.4).  If you aren't, you should install it now:

emerge -av dev-java/blackdown-jdk

(or use the JRE... I'm just giving examples at this point)

** Back to the WARNING **

Installing the new sun-jdk will usually set your system VM to that one
(which is 1.5).  To fix this and set a 1.4 system VM, you need to
perform the following steps *AFTER* the emerge:

      * Run the following command (as root) to set a new 1.4 system VM:

java-config --set-system-vm=blackdown-jre-1.4.2.02

(assuming you have that version of the blackdown JRE installed)

      * Now set your user VM to the 1.5 JVM.  Run the following command
        as you standard user account(s):

java-config --set-user-vm=sun-jdk-1.5.0.05

(assuming you installed that version of the sun-jdk)


That should do it.  Enjoy!


> By the way, I'm really sorry to send e-mail to Greg's personal address.
> So I send same mail to list.

No problem at all.

Cheers,
Greg

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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Daigo Kobayashi]

Hi. Greg

Thank you for reply my message. I try to upgrade sun-jdk 1.5
and successfully finished.
 I know in some case jdk 1.5 may cause problem. But I dont't want
to back to jdk 1.4.2. So I remove sun-jdk 1.4.2_09.

 If I found some problem, shoud I will report it?

regards,
Daigo Kobayashi

> OK, here's how this is done.  It's actually easy but I'll include
> specific details for you, just in case you're new to this:
> 
>       * If it doesn't already exist, create the directory "/etc/portage"
> 
>       * Then create the file "/etc/portage/package.unmask" if it doesn't
>         already exist.
> 
>       * Add the following line(s) to that file (comments may be
>         omitted):
> 
> #----------------
> dev-java/sun-jdk
>   # (or whatever vendor package you want -- use the full name)
> dev-java/java-sdk-docs
>   # (if you have your "doc" USE flag on)
> #----------------
> 
>       * The above removes the package mask added by the Gentoo
>         developers.  However, since the sun-jdk 1.5 package is also
>         marked unstable ("~"), you may need to enable the "testing"
>         profile for these packages as well.  Unless your system is set
>         to ~ you will need to perform the following:
> 
>       * If it doesn't already exist, create the file
>         "/etc/portage/package.keywords".
> 
>       * Add the following lines to that file, where "~arch" is the
>         unstable flag for your architecture (e.g., most likely ~x86 or
>         ~amd64).  Comments may be omitted, of course:
> 
> #----------------
> dev-java/sun-jdk ~arch
> dev-java/java-sdk-docs ~arch
> #----------------
> 
> 
> That should do it.  You can now emerge the package with a standard
> command:
> 
> emerge -av dev-java/sun-jdk
> 
> 
> ** VERY IMPORTANT **
> 
> Unless you know what you're doing, I strongly recommend that you leave
> your system VM set to a 1.4 JDK/runtime.  Your message didn't indicate
> if you have one installed, so I'll assume you are using Blackdown (which
> is 1.4).  If you aren't, you should install it now:
> 
> emerge -av dev-java/blackdown-jdk
> 
> (or use the JRE... I'm just giving examples at this point)
> 
> ** Back to the WARNING **
> 
> Installing the new sun-jdk will usually set your system VM to that one
> (which is 1.5).  To fix this and set a 1.4 system VM, you need to
> perform the following steps *AFTER* the emerge:
> 
>       * Run the following command (as root) to set a new 1.4 system VM:
> 
> java-config --set-system-vm=blackdown-jre-1.4.2.02
> 
> (assuming you have that version of the blackdown JRE installed)
> 
>       * Now set your user VM to the 1.5 JVM.  Run the following command
>         as you standard user account(s):
> 
> java-config --set-user-vm=sun-jdk-1.5.0.05
> 
> (assuming you installed that version of the sun-jdk)
> 
> 
> That should do it.  Enjoy!

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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Greg Tassone]

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On Sat, 2005-12-03 at 09:52 +0900, Daigo Kobayashi wrote:
> Hi. Greg
> 
> Thank you for reply my message. I try to upgrade sun-jdk 1.5
> and successfully finished.

Glad to hear it.


>  I know in some case jdk 1.5 may cause problem. But I dont't want
> to back to jdk 1.4.2. So I remove sun-jdk 1.4.2_09.

Understood.  Depending on which Java packages you are trying to use
there may be problems, but at least you know the risks.  The types of
problems are varied and sometimes a bit complicated -- see the other
parts of this thread for more detailed information.

Furthermore, in doing this you are putting your Gentoo environment into
a less-supportable design.  In other words, some folks may be less
interested in helping you should any problems arise, so make sure you
are "comfortable" in dealing with system problems yourself.

If this doesn't sound desirable to you, I suggest you leave a 1.4 JDK on
your machine for now (in addition to the 1.5 JDK, of course).  Unless
you cannot afford the disk space or something, it may save you some
problems in the long run, and it doesn't hurt anything in doing so.


>  If I found some problem, shoud I will report it?

Well, this gets tricky.  Nothing should be reported that may be caused
by system conflicts from unmasking a masked package (that's why they are
masked in the first place).  Therefore, unless you are pretty certain
that a given problem is NOT related to a masked package conflict, you
shouldn't report it (IMO).

Regards,
Greg

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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Peter B. West]

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Greg Tassone wrote:
> On Tue, 2005-11-29 at 13:50 +0200, Petteri Räty wrote:
> 
>>Greg Tassone wrote:
>>
>>>FYI:  There is nothing "unstable" about JDK 1.5 (or Java 5).
> 
> ...
> 
>> It has simply
>>
>>>been package-masked here at Gentoo because there have been some
>>>lingering ebuilds that didn't compile cleanly with it.  Hopefully it is
>>>going to be unmasked VERY soon.
>>>
>>
>>It also by default produces class files that are not compatible with
>>earlier versions etc.
> 
> ...
> 
>>You can safely make 1.5 the user vm using java-config -s. But just be
>>sure you don't ever set it as the system vm.
> 
> 
> Very true.  Just to clear up any confusion for others on the list, this
> means that if you are trying to run a 1.5 JDK as the primary on your
> system at the same time you have a 1.4 JDK running, the 1.4 JDK will be
> unable to use most of the code compiled from the 1.5 JDK (by default).
> 
> Since most packages on the Gentoo distro compile themselves from source
> (Java included), having a 1.5 JDK as your *system VM* means that your
> Java applications would be compiled so that ONLY Java 5 (and higher)
> runtimes could use the applications.  This is a show-stopper for those
> still running a 1.4 JDK (at least for non-developers, who should know
> how to deal with this stuff anyway):
> 
> Choices:
> 
>       * Run only 1.5 or higher on your system (with no intention of ever
>         going back down).  Note that as of a while ago certain packages
>         in the Portage tree still required 1.4, so this approach may
>         preclude installing those packages from Portage.
>  --OR--
>       * Take Petteri's advice and leave 1.4 as the system VM, and set
>         your "user" VM to 1.5 (or higher) if desired.
> 
> HTH to clarify...
> 
> Greg

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?

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.

Peter
-- 
Peter B. West <http://cv.pbw.id.au/>
Folio <http://defoe.sourceforge.net/folio/>

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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Antony Riley]

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There's a whole bunch of subtleties.

Just unmerge all your java packages, and try to re-emerge them with a
1.5system JVM.

New keywords.
Some packages build scripts use -source 1.1 -source 1.1 which the 1.5 javac
doesn't seem to support anymore. [goes as low as 1.2 now]

I'm sure there's more.

The "not backwards compatable to 1.5" is a bit of an error as many packages
seem to specify -source and -target in their build scripts.

I couldn't even get ant to build, which is fairly important for most java
packages.

I was thinking if you just patched ant to default the <javac> task to
-source 1.4 -target 1.5, you could probably get a mostly working system, but
the packages which set these explicitely would still be a problem, also it
may be a problem with 1.5 only packages that don't specify these [unless you
want to go around patching lots of build scripts]

I haven't looked at the experiement java stuff yet, might take a gander
sometime, so appologies if I'm saying stuff that's already been said.

On 11/29/05, Peter B. West <lists@pbw.id.au> wrote:
>
> Greg Tassone wrote:
> > On Tue, 2005-11-29 at 13:50 +0200, Petteri Räty wrote:
> >
> >>Greg Tassone wrote:
> >>
> >>>FYI:  There is nothing "unstable" about JDK 1.5 (or Java 5).
> >
> > ...
> >
> >> It has simply
> >>
> >>>been package-masked here at Gentoo because there have been some
> >>>lingering ebuilds that didn't compile cleanly with it.  Hopefully it is
> >>>going to be unmasked VERY soon.
> >>>
> >>
> >>It also by default produces class files that are not compatible with
> >>earlier versions etc.
> >
> > ...
> >
> >>You can safely make 1.5 the user vm using java-config -s. But just be
> >>sure you don't ever set it as the system vm.
> >
> >
> > Very true.  Just to clear up any confusion for others on the list, this
> > means that if you are trying to run a 1.5 JDK as the primary on your
> > system at the same time you have a 1.4 JDK running, the 1.4 JDK will be
> > unable to use most of the code compiled from the 1.5 JDK (by default).
> >
> > Since most packages on the Gentoo distro compile themselves from source
> > (Java included), having a 1.5 JDK as your *system VM* means that your
> > Java applications would be compiled so that ONLY Java 5 (and higher)
> > runtimes could use the applications.  This is a show-stopper for those
> > still running a 1.4 JDK (at least for non-developers, who should know
> > how to deal with this stuff anyway):
> >
> > Choices:
> >
> >       * Run only 1.5 or higher on your system (with no intention of ever
> >         going back down).  Note that as of a while ago certain packages
> >         in the Portage tree still required 1.4, so this approach may
> >         preclude installing those packages from Portage.
> >  --OR--
> >       * Take Petteri's advice and leave 1.4 as the system VM, and set
> >         your "user" VM to 1.5 (or higher) if desired.
> >
> > HTH to clarify...
> >
> > Greg
>
> 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?
>
> 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.
>
> Peter
> --
> Peter B. West <http://cv.pbw.id.au/>
> Folio <http://defoe.sourceforge.net/folio/>
>
>
>

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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Joshua Nichols]

> 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.

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

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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Peter B. West]

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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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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Greg Tassone]

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On Wed, 2005-11-30 at 22:39 +0000, Peter B. West wrote:
> 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


I think you're missing one of the main points here... he did NOT say
that they would not compile at all -- he said they would not compile on
the current Gentoo ebuild base (e.g., "... using a 1.5 JDK to emerge
your system").

Then, did you see the rest of his message, the part talking about the
1.5 overlay that is being worked on?  The main point of the overlay is
to get these "incompatibilities" resolved.  Then the "fixed" ebuilds
from the overlay can become mainstream in Portage.

This stuff takes time, especially when system-level stability issues
stand in the balance.

Greg


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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Peter B. West]

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Greg Tassone wrote:
> On Wed, 2005-11-30 at 22:39 +0000, Peter B. West wrote:
> 
>>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
> 
> 
> 
> I think you're missing one of the main points here... he did NOT say
> that they would not compile at all -- he said they would not compile on
> the current Gentoo ebuild base (e.g., "... using a 1.5 JDK to emerge
> your system").
> 
> Then, did you see the rest of his message, the part talking about the
> 1.5 overlay that is being worked on?  The main point of the overlay is
> to get these "incompatibilities" resolved.  Then the "fixed" ebuilds
> from the overlay can become mainstream in Portage.
> 
> This stuff takes time, especially when system-level stability issues
> stand in the balance.

I think you're missing my point.  Java 5 works, and is, for practical 
purposes, forward compatible with 1,4, with the exception of 'enum'.  If 
that is so, why not a flag 'java5', that triggers source source 1.4 on 
packages that need it?  The system JVM is 5, and Bob's your uncle. 
What's the system-level stability issue?

This is not a technical issue, it's an ideological issue, as I said 
before.  This is, in fact, quite explicit in the Gentoo documentation. I 
suggest that subscribers to the "conspiracy-theory-theory" (I never used 
the word) read the "Gentoo social contract"
<http://www.gentoo.org/main/en/contract.xml>, including the definition 
of "free software" <http://www.fsf.org/licensing/essays/free-sw.html>.

I suggest, further, that the Gentoo folks in this forum come clean about 
this when asked in good faith about using Java 5 on Gentoo.  The answer 
is along these lines: Java 5 will not be supported on Gentoo until a 1.5 
JVM is available under a Stallman-approved licence.  The genuine options 
for J5 users are to scrap the Gentoo Java support and maintain your own 
Java environment, or to abandon Gentoo.

I see that there is yet another enquiry on the list about using J5. Do 
that user a favour and tell him why he can't get a supported J5 
environment on Gentoo, so that he can then make informed decisions. If 
you guys are embarrassed by the Gentoo ideology, change it or leave. If 
not, present it honestly, instead of spouting this deliberately 
misleading BS about system stability issues.  It's leaving users with 
the impression that J5 is unstable, which it patently is not.

Peter
-- 
Peter B. West <http://cv.pbw.id.au/>
Folio <http://defoe.sourceforge.net/folio/>

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Re: [gentoo-java] Question about Sun-Jdk 1.4.2.10

[Petteri Räty]

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Peter B. West wrote:
> 
> 
> I think you're missing my point.  Java 5 works, and is, for practical
> purposes, forward compatible with 1,4, with the exception of 'enum'.  If
> that is so, why not a flag 'java5', that triggers source source 1.4 on
> packages that need it?  The system JVM is 5, and Bob's your uncle.
> What's the system-level stability issue?
> 

Java 5 is *not* API compatible with 1.4.

We already have an overlay for using 1.5:
http://dev.gentoo.org/~betelgeuse/axxo-overlay

As far as stability goes, I think 1.5 is more stable than 1.4 as far as
for example applets go.

>
> This is not a technical issue, it's an ideological issue, as I said
> before.  This is, in fact, quite explicit in the Gentoo documentation. I
> suggest that subscribers to the "conspiracy-theory-theory" (I never used
> the word) read the "Gentoo social contract"
> <http://www.gentoo.org/main/en/contract.xml>, including the definition
> of "free software" <http://www.fsf.org/licensing/essays/free-sw.html>.
> 
> I suggest, further, that the Gentoo folks in this forum come clean about
> this when asked in good faith about using Java 5 on Gentoo.  The answer
> is along these lines: Java 5 will not be supported on Gentoo until a 1.5
> JVM is available under a Stallman-approved licence.  The genuine options
> for J5 users are to scrap the Gentoo Java support and maintain your own
> Java environment, or to abandon Gentoo.
> 
> I see that there is yet another enquiry on the list about using J5. Do
> that user a favour and tell him why he can't get a supported J5
> environment on Gentoo, so that he can then make informed decisions. If
> you guys are embarrassed by the Gentoo ideology, change it or leave. If
> not, present it honestly, instead of spouting this deliberately
> misleading BS about system stability issues.  It's leaving users with
> the impression that J5 is unstable, which it patently is not.
> 
> Peter

We already have a Java 5 environment for which you will get support from
us: It is called the axxo-overlay.

Regards,
Petteri

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