# (We only need to do this for cc, not for gcc. ccversion is computed above.)
case "$ccversion" in
'') ;; # gcc. Do nothing.
-*) cppstdin=`pwd`/cppstdin
+*) # Inside this call-back unit, we are down in the UU/ subdirectory,
+ # but Configure will look for cppstdin one level up.
+ cd ..; cppstdin=`pwd`/cppstdin; cd UU
cpprun="$cppstdin"
;;
esac