Re: [gentoo-dev] Java-Plugin in Mozilla with GCC3.1(.1)

[Matthew Kennedy]

Alexander Jordan <jordan29@×××××.de> writes:

> Hi,
>
> I'm very enthusiastic about Gentoo, its speed and its configurability.
> But there's the problem with mozilla (same seems to be with konqueror) an the
> java-plugin.
>
> I use Gentoo 1.3b, once Athlon-optimized and another i686-optimized with
> latest updates by portage (gcc3.1.1, mozilla1.0-r3,blackdown-jdk-1.3.1-r7)
> and get this errormessage:
>
> alex@spitmobil ~ $ mozilla -d
>
> Gdk-WARNING **: locale not supported by Xlib, locale set to C
> LoadPlugin: failed to initialize shared library
> /opt/blackdown-jdk-1.3.1/jre/plugin/i386/mozilla/javaplugin_oji.so
> [/opt/blackdown-jdk-1.3.1/jre/plugin/i386/mozilla/javaplugin_oji.so:
> undefined symbol: __vt_17nsGetServiceByCID]
> LoadPlugin: failed to initialize shared library
> /usr/lib/mozilla/plugins/java2/plugin/i386/ns600/libjavaplugin_oji.so
> [/usr/lib/mozilla/plugins/java2/plugin/i386/ns600/libjavaplugin_oji.so:
> undefined symbol: __vt_17nsGetServiceByCID]
>
> I hope you know anybody in your team, who can resolve this problem :-).

I think it's a safe bet if I say that nothing can be done about this
at the moment. You really need to lobby your Java vendor on this
issue.

http://developer.java.sun.com/developer/bugParade/bugs/4694590.html

You'll need to sign up to view that URL... might be worth while too
since you can vote that bug to be your priority/favourite bug. You can
also see what the Sun engineer assigned to it thinks. 

Basically the problem is this: The JDK (IBM, Sun, Blackdown) was
compiled against GCC 2.95.x and then distributed to you. Because the
C++ ABI changed between GCC 2.95.x and GCC 3.1.x, the GCC
2.95.x-compiled JNI[1] portion of the JDK is incompatible with GCC
3.1.x compiled interfaces to it. This is the case of the JDK's JNI
and, say, the JNI code you compiled with GCC 3.1.x for Mozilla.

Hope that makes sense.

If you have an applet you really need to access, you might be able to
work-around with the standalone "appletviewer" program bundled with
most JDK/JRE.

The other alternative is to get the source to the JDK and compile it
yourself. But this has its own problems with respect to your freedoms
and in any case, it's possible (so I hear anyway) that their source
release may not be equivlent the source used to compile the JDK for
binary release.

Footnotes: 
[1]  JNI is the interface between Java byte-code and native C++ code.

-- 
Matthew Kennedy
Gentoo Linux Developer
Bugs go to http://bugs.gentoo.org!