PyLucene: How to package libraries that link against OpenJDK libraries?

[Andrew Haley]

Colin Walters wrote:
> On Thu, May 22, 2008 at 5:33 PM, Felix Schwarz
> <felix.schwarz at oss.schwarz.eu> wrote:
>
>>    c) How to get the correct vm type? On i386 there is a client and a server
>>       vm. Is there a way I can "just" get the client vm directory (and as a
>>       fallback the server vm)?
> 
> Hm, if the project needs to poke at the internal VM libraries I'm not
> sure there's a clean way to do that, but an OpenJDK hacker might be
> able to give you an answer.

This is a bit mysterious.  I guess I don't understand why PyLucene
would want to poke at the internal VM libraries.

>>    d) JCC uses JNI so the library paths must be set correctly at runtime.
>>       Unfortunately, the OpenJDK package does not add its paths to
>>       /etc/ld.so.conf.d (did I miss something?) Is there another workaround
>>       besides using rpath (bad, see a) or filing a bug against OpenJDK?

OpenJDK doesn't need to add its paths to /etc/ld.so.conf.d.  
It calls (for example)
putenv("LD_LIBRARY_PATH=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre/lib/amd64/server:\
/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre/lib/amd64:\
/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre/../lib/amd64" + the old path.)
and re-execs java.

> Right now, you should hardcode the paths to the library in your package.  See:
> http://fedoraproject.org/wiki/Packaging/Java#head-61a3ee0d05ff616ef9be2021b489610e036fd932
> Specifically, "If the JNI-using code calls System.loadLibrary you'll
> have to patch it to use System.load, passing it the full path to the
> dynamic shared object."
> 
> For an example of this see
> http://cvs.fedoraproject.org/viewcvs/devel/javasqlite/
> 
> This is necessary until we get multilib-awareness into OpenJDK upstream.

Interesting.  What multilib-awareness do you think we need?  It's not
immediately clear to me where the beinefit would be.

Andrew.