Compiling PLL's on RHEL 5 Linux for 10g

Is it possible to compile and save the PLL libraries and save them as PLL's on Linux for 10g?   On our old client/server, we had the PLL's compiled and saved as PLL's on our network, but now we're moving to Linux for 10g.   

When I compile using the following command, it compiles but it saves it as a PLX file.  I would like to keep it as a PLL, if possible because we attach those libraries in our forms.

./frmcmp.sh module=/home/oracle/OraHome_1/folder1/bin/pb_cr008.pll userid=username/password@databaseinstance module_type=library compile_all=yes