[OMPI users] undefined symbol error when built as a shared library

[Ashika Umanga Umagiliya]

Greetings all,

My parallel application is build as a shared library (libParallel.so). 
(I use Debian Lenny 64bit).
A webservice is used to dynamically load libParallel.so and inturn 
execute the parallel process .

But during runtime I get the error :

webservicestub: symbol lookup error: 
/usr/local/lib/openmpi/mca_paffinity_linux.so: undefined symbol: 
mca_base_param_reg_int

which I cannot figure out.I followed every 'ldd' and 'nm' seems 
everything is fine.
So I compiled and tested my parallel code as an executable and then it 
worked fine.

What could be the reason for this?

Thanks in advance,
umanga