Re: [Java-gnome-developer] undefined reference to `org::gnu::gtk::Entry::class$'

[Andrew C. <an...@op...>]

On Mon, 2006-11-27 at 15:29 +0100, Jean-Christian de Rivaz wrote:
> I did not understand why the GCJ library still make the JNI stuff=20
> required.

I tried linking the java-gnome jni.so libraries into my executable once,
but I couldn't get it to work. If I had to guess, it's because
System.loadLibrary() seems to require that there be a separate library
be findable by dlopen() at runtime by name.

You'd think, though, that libgcj would have hacked theirs up so that it
could find its symbols linked in to the final binary. Maybe someone
smarter than me can point out how to do it right.

Interestingly, although the library as a whole gets loaded, Sun's JVM
does the symbol lookups on a class by class basis. Try

	java -verbose:jni MyProgram

sometime. And try doing

	ldd ./myprogram

on a java-gnome binary built with GCJ. It's quite the monster list, so
somehow removing the JNI .so's wouldn't really change much.

> This could be an Ubuntu Edgy specific issue.=20

Be aware that Ubuntu is out of date:
https://launchpad.net/distros/ubuntu/+source/glib-java/+bug/70113/
so Ubuntu users need to show some of that Ubuntu magic that Ubuntu
lovers are always going on about and get some new java-gnome packages
made up!

AfC
Singapore

--=20
Andrew Frederick Cowie

Technology strategy, managing change, establishing procedures,
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