gistfile1

$ time ninja -C out/Debug # initial luvit build
ninja -C out/Debug  93.73s user 26.90s system 145% cpu 1:22.99 total
$ time ninja -C out/Debug # no change build
ninja -C out/Debug  0.03s user 0.03s system 88% cpu 0.066 totals 
$ time ninja -C out/Debug # luv_stream.c change build
ninja -C out/Debug  0.46s user 0.21s system 94% cpu 0.714 total

$ time make -C out # initial luvit build
make -C out  82.56s user 35.08s system 92% cpu 2:06.70 total
$ time make -C out # no change
make -C out  0.49s user 0.07s system 94% cpu 0.595 total
$ time make -C out # luv_stream.c change build
make -C out  0.85s user 0.23s system 86% cpu 1.242 total