Add the portable rombuild wrapper romnibus.pl to make it available for Windows as well as Linux
VARIANT groupA
EXTENDS default
# grouping node
VIRTUAL
# Add to parent paths
BUILD_INCLUDE append /epoc32/include/groupA/build
# Append ROM_INCLUDE to parent
ROM_INCLUDE append /epoc32/include/groupA/rom
VARIANT_HRH /epoc32/include/e32std.h