printf 'Stage 1\n'
make clean
time -p make -f Makefile.old
mv eshtrans.old eshtrans.stage1

printf 'Stage 2\n'
make clean
cp -p eshtrans.stage1 eshtrans
time -p make
mv eshtrans eshtrans.stage2

printf 'Stage 3\n'
make clean
cp -p eshtrans.stage2 eshtrans
time -p make
mv eshtrans eshtrans.stage3