Enhance the base/rom extension to generate the symbol file of the rom built.
The symbol file is placed in epoc32/rom/<baseport_name>, along with the rom log and final oby file.
EXPORTS
SessionCreate__FRC6TDesC8iPC15TSecurityPolicyi @ 1 NONAME ; SessionCreate(TDesC8 const &, int, TSecurityPolicy const *, int)
SessionSendSync__FiiPvP14TRequestStatus @ 2 NONAME ; SessionSendSync(int, int, void *, TRequestStatus *)
SessionSend__FiiPvP14TRequestStatus @ 3 NONAME ; SessionSend(int, int, void *, TRequestStatus *)
SetSessionPtr__FiPCv @ 4 NONAME R3UNUSED ; SetSessionPtr(int, void const *)