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.

!COMPULSORY
!INCREMENTAL

<option keepgoing>
<option tools>
<option epoconly>

e32tools	e32tools\group
e32			e32
compsupp	e32\compsupp
f32			f32\group
hal			hal