Shared libraries

[Brian Burton]

Jon,

I haven't tried using cryptix with kaffe, so I don't have concrete help
to offer.  But my understanding is that kaffe uses a different native
class interface than the JDK.  Apparently the calling conventions and
data layouts are different and incompatible.

So my WAG is that you need to rebuild and possibly modify the cryptix
native libs to use the kaffe conventions.  Do you know if anyone else
has ever used cryptix with kaffe?  I may give it a try myself in the
next few weeks and will let you know if I get it working.

If I am misinformed about kaffe, I apologize and look forward to hearing
the real story :-)

All the best,
++Brian

Jon Skeet wrote:
> 
> I'm using kaffe 0.91 on an Intel Linux box, and trying to use a package
> which uses some native calls. (The package is cryptix, if that helps
> anyone). I've built the native library and the java classes, and tried all
> kinds of things to let kaffe "see" the library - but to no avail.
> 
> The error message is as follows:
> 
> Failed to locate native function:
>         cryptix/math/BigNum.bignum_new()I
> java.lang.UnsatisfiedLinkError
>         at cryptix/math/BigNum.<clinit>(34)
> 
> (rest of stack in my code)
> 
> Under the standard JDK for Linux, this works fine, so I presume it's just
> a case of kaffe not finding the library. Some places I've tried putting
> the shared library libbignum.so:
> 
> /usr/local/lib
> /usr/lib
> The directory the test classes are in
> The directory the kaffe binary is in
> 
> I've also tried copying it to libBigNum.so, running ldconfig as root left
> right and centre, setting (and exporting) LD_LIBRARY_PATH to be various
> things... nothing seems to make any difference.
> 
> I'm more than slightly clueless about shared libraries, but I've run out
> of daft ideas to try... anyone know how to make this work? I've got to use
> Kaffe for my current project as it's built into Amaya...
> 
> Mailing replies to this address as well as to the list would be
> appreciated... I'm only just putting myself on the list now, and I don't
> know how long it'll take to start sending stuff through.
> 
> Thanks in advance,
> 
> Jon Skeet

-- 
Brian Burton                          Custom Software Development
Burton Computer Corporation           Java, C++, Orbix, Tuxedo
brian.burton at burton-computer.com      OO Consulting and Mentoring