As a comparison I did: - make clean - makeThe dependencies only have to be recreated on the first build, not on subsequent builds. In that case I get 3 minutes and 30 seconds. So the Cygwin dependency generation vi mkwindeps.sh requires about 2 minutes by itself
But with the current changes I get: $ make clean $ time make -j real 0m46.981s user 0m28.503s sys 1m42.016s That is the fastest Cygwin build I have EVER done!