.cc clang
.ld   lld-link

# Shell block
CFLAGS ::
     -Iinclude/
     -mgeneral-regs-only
     -ffreestanding
      $CONF  # expands to -D chain
~

.obiter echo $OBJ
.obiter objcopy -O binary $OBJ $OBJ.bin
.oblink

# configuration section
# these get

conf FOO  : true
conf BAR  : 123