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
Get__3HALQ27HALData10TAttributeRi @ 1 NONAME ; HAL::Get(HALData::TAttribute, int &)
Set__3HALQ27HALData10TAttributei @ 2 NONAME ; HAL::Set(HALData::TAttribute, int)
GetAll__3HALRiRPQ23HAL6SEntry @ 3 NONAME ; HAL::GetAll(int &, HAL::SEntry *&)
Get__3HALiQ27HALData10TAttributeRi @ 4 NONAME R3UNUSED ; HAL::Get(int, HALData::TAttribute, int &)
Set__3HALiQ27HALData10TAttributei @ 5 NONAME R3UNUSED ; HAL::Set(int, HALData::TAttribute, int)
"_11HalInternal.InitialValue" @ 6 NONAME ; HalInternal::InitialValue