[fedora-java] Java OpenGL on FC4

[Thomas Fitzsimmons]

On Sun, 2005-08-14 at 22:21 -0700, Anthony Green wrote:
> On Sun, 2005-08-14 at 20:26 -0700, John M. Gabriele wrote:
> > [john at localhost ~/dev/java/JOGL_Example]$ gij -cp /usr/share/java/jogl.jar Test
> > Exception in thread "main" java.lang.UnsatisfiedLinkError: libjawt: file not
> > found
> >    at java.lang.Runtime._load(java.lang.String, boolean)
> > (/usr/lib/libgcj.so.6.0.0)
> 
> For some reason gij doesn't know where libjawt.so is.  I think fitzsim
> and I have discussed, but I don't recall the result.
> 
> Try doing this before running your program.  It should fix it:
> 
> $ export LD_LIBRARY_PATH=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre/lib/i386

Yes, to fix this properly we need to add that directory to the
java.library.path system property.  I filed a bug:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23403

Tom

> 
> > Compiling to object works also:
> > 
> > gcj --classpath=/usr/share/java/jogl.jar -c Test.java
> > 
> > but trying to link that fails:
> > 
> > [john at localhost ~/dev/java/JOGL_Example]$ gcj
> > --classpath=/usr/share/java/jogl.jar --main=Test -o MyTest Test.o
> > Test.o(.text+0x1d): In function
> > `TestRenderer::init(net::java::games::jogl::GLDrawable*)':
> > Test.java: undefined reference to `net::java::games::jogl::GLDrawable::class$'
> 
> There are two solutions:
> 
> 1. Compile your code with -findirect-dispatch.
> 
> This will replace symbolic references to the jogl code with runtime name
> lookups.
> 
> or
> 
> 2. Link with -ljogl.jar.  This will link libjogl.jar.so to your program,
> which should resolve all of the jogl symbols.
> 
> Good luck!
> 
> AG
> 
> 
> 
> 
> 
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