Re: Java on fc4

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To: For users of Fedora Core releases <fedora-list@redhat.com>
Date: Thu, 14 Jul 2005 18:19:41 +0100

On Thu, 2005-07-14 at 10:59 -0400, Temlakos wrote:
> Mlists wrote:
> > On Thu, 2005-07-14 at 09:56 -0400, Temlakos wrote:
> >
> >>Mlists wrote:
> >>
> >>>Has anyone got java to work with either javaws or firefox on fc4 yet ?
> >>>
> >>
> >>Java, definitely yes. I used Michael Peters' "nosrc.rpm" packages, in a
> >>"secure rpmbuild environment" (basically a user account dedicated to rpm
> >>building), to build several rpm packages from Sun's binary
> >>self-extracting source package. I then installed the JRE and J-SDK on my
> >>system. I then installed a handy Java-based text editor--couldn't be
> >>happier with it. And compiling with Java is so simple that I don't yet
> >>see a need for an Integrated Development Environment. (If anyone can
> >>tell me how to use Eclipse for that purpose, or show me where I can get
> >>some tutorial and other help, please share.) I am now using the J-SDK to
> >>develop a major Java application--or rather, "port" it from native C++
> >>and wxWidgets. Already I find Java, Swing, and JDBC to be /far/ more
> >>powerful than their C++ equivalents.
> >>
> >>But Java Web Start is a hopeless case. Every time I try to start
> >>anything with Java Web Start, it just starts opening window after window
> >>on Firefox until I forcibly stop it.
> >>
> >>Java Web Start is /supposed/ to be installed with the JRE. But on my
> >>system, using Firefox, it is not working. (Then again, I can't use
> >>JavaWS on Windows XP SP2, either--I suspect that this is a security
> >>issue, and therefore I'm not even sure that having JavaWS on your system
> >>is very smart!)
> >>
> >>Temlakos
> >>
> > Could you possibly send me a copy of your java rpms as the ones on the
> > sun site appear to be the ones causing all the trouble.
> >
> > Thanks
> >
>
> Rather than that, I will send you some links to some instructions on how
> to build them. If I sent you my rpm packages directly, I would be
> violating a license.
>
> First, /do not/ use Sun's pre-built rpm package. It is /not/ Fedora
> compatible. Michael Peters will also vouch for that.
>
> Instead, go to this link:
>
> http://www.jpackage.org/rpm.php?id=2663
>
> That will get you started.
>
> How do you build RPM's? If you're like most people, you probably build
> them as root, using the default rpmbuild environment in the /usr
> filesystem. Michael Peters doesn't advise that--and neither do I,
> because it's an administrative nightmare and could break your system if
> you use an improperly written SPEC file. (Go to rpm.org for a definition
> of that little technical gem.) I set up a special environment just for
> rpm building. Read the instructions for that here:
>
> http://mpeters.us/linux/rpmbuild.php
>
> Once you have that in place: go back to the first link I showed you. Get
> the "nosrc.rpm" file, put it anywhere on your special rpmbuild user
> account (even the desktop will fit). Also follow the link to Sun's site
>
> Here is a link for detailed and up-to-date rpm rebuilding instructions:
>
> http://www.jpackage.org/rebuilding.php
>
> Basically, the commands you need to issue are, in this order:
>
> $ rpm -i java-1.5.0-sun-1.5.0.04-1jpp.nosrc.rpm
>
> At this point, open a file named, I believe, java-1.5.0-sun.spec (the
> filename might be slightly different), which you will find in the SPECS
> directory of your RPM build tree (which you will have set up according
> to the instructions above). That will tell you what source files you
> need, including the binary I mentioned. Make sure all of those appear in
> your SOURCES directory.
>
> Now execute:
>
> $ rpmbuild -ba rpm/SPECS/java-1.5.0-sun.spec
>
> (or however that spec file is named).
>
> This will construct about eight rpm files in one of the directories
> named for different system architectures. You will /even/ get your very
> own source RPM files in case you have to rebuild for any reason.
>
> You can install whatever you need using conventional rpm installation
> tools. Obviously "rpm -Uvh java..." will serve. I created my own
> yum-style repo on my disk, and configured a channel to the "smart"
> package manager. Some of the links I mentioned talk about building a
> yum-style repo--you'll need a command called "createrepo" to do it.
>
> Or, "smart" (and maybe yum as well) can install "local" rpm packages for
> you, even if they're not in a repository.
>
> That's my poor man's effort at a tutorial. Your best bet, of course, is
> to go to the source--namely the links I mentioned.

There's an FC4-specific version of the entire process available at:
http://fedoranews.org/mediawiki/index.php/JPackage_Java_for_FC4

Paul.

-- 
Paul Howarth <paul@city-fan.org>
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