which one is odbc driver? - Mailing list pgsql-odbc

Hi,
I have download postgesql source core on hp/ux 10.20. and installed
successfully. But there are
several libaries file under lib directory: libpsqlodbc.a,
libpsqlodbc.sl, libpsqlodbc.sl.0, which one
is odbc driver?

Thanks for your help.

Liping