Have the generation of multiple way interface files for GHC.hi-boot be done as part of boot target
#-----------------------------------------------------------------------------
# Rules
-GHC.$(way_)hi : GHC.hi-boot
- cp GHC.hi-boot GHC.$(way_)hi
-
+ghc/GHC.$(way_)hi : ghc/GHC.hi-boot
+ cp $< $@
+boot :: ghc/GHC.hi $(foreach way, $(WAYS), ghc/GHC.$(way)_hi)
#-----------------------------------------------------------------------------
# Installation; need to install .hi files as well as libraries