Make-based build fails entirely
As of today, building GHC using the old make-based system fails entirely
bash$ sh validate --legacy --fast
using THREADS=21
make: Entering directory '/home/simonpj/code/HEAD/utils/checkUniques'
./check-uniques.py ../..
make: Leaving directory '/home/simonpj/code/HEAD/utils/checkUniques'
make --no-print-directory -f ghc.mk maintainer-clean CLEANING=YES
rts/ghc.mk:78: *** Target architecture has no native adjustor implementation. Stop.
make: *** [Makefile:166: maintainer-clean] Error 2
What should I do?
(I know I shouldn't be using --legacy but it still does things for me that hadrian doesn't.)