GCJ .jar to .so with native method

[jhoffert@dre.vanderbilt.edu]

Thanks, Andrew! This helps greatly!

> Andrew Haley writes:
>
>  >
>  > The problem occurs when your program calls
>  > java.lang.System.loadLibrary(java.lang.String)void with the arg
>  > "ricochet-jni".  The library isn't there, so System.loadLibrary fails.
>  > I don't know why it doesn't print a stack trace at that point: it
>  > should.  I'll investigate.
>
> Ha!  Stupid me!
>
> Yes, I do know why your stack trace isn't being printed: you need to
> wrap your entire main in a handler, like this:
>
>   try
>     {
>
>       ...
>
>       ra->run ();
>     }
>   catch (::java::lang::Throwable *ex)
>     {
>       ex->printStackTrace ();
>     }
>
> You also need
>
>       JvAttachCurrentThread (NULL, NULL);
>
> That's in the docs, too.
>
> You'll then get
>
> zorro:tmp $ LD_LIBRARY_PATH=.:/home/aph/gcc/trunk/install/lib64/:.
> ./RicochetApp
> Status from JvCreateJavaVM call is 0
> Before call to JvInitClass
> java.lang.UnsatisfiedLinkError: libricochet-jni: libricochet-jni.so:
> cannot open shared object file: No such file or directory
>    at java.lang.Runtime._load(natRuntime.cc:188)
>    at java.lang.Runtime.loadLibrary(Runtime.java:655)
>    at java.lang.System.loadLibrary(System.java:608)
>    at multishot.examples.RicochetApp.<clinit>(libricochet.so)
>    at java.lang.Class.initializeClass(natClass.cc:780)
>
> Andrew.
>
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