Mention .so files in custom rule file

Hi,

I have some .so files to do database encryption in my project.when apply ant task with this custom rule i got an error like

No implementation found for native Lcom.......

 java.lang.UnsatisfiedLinkError: Native method not found:

how can solve this issue.how do i specify the .so files in custom rules file.please advice me.

i am helpless..

Thanks in Advance
