dmd bootstrap test

#!/bin/bash

rm -rf stage1
rm -rf stage2
rm -rf stage3

# Stage 1
make -j8 -f posix.mak CC=g++-4.9 HOST_DMD=gdmd
mkdir stage1
mv dmd stage1/dmd
make -j8 -f posix.mak CC=g++-4.9 HOST_DMD=gdmd clean

# Stage 2
make -j8 -f posix.mak CC=g++-4.9 HOST_DMD=./stage1/dmd
mkdir stage2
mv dmd stage2/dmd
mv *.o stage2/
make -j8 -f posix.mak CC=g++-4.9 HOST_DMD=./stage1/dmd clean

# Stage 3
make -j8 -f posix.mak CC=g++-4.9 HOST_DMD=./stage2/dmd
mkdir stage3
mv dmd stage3/dmd
mv *.o stage3/
make -j8 -f posix.mak CC=g++-4.9 HOST_DMD=./stage2/dmd clean

ret=0
for obj in $(ls stage2); do
  cmp stage2/${obj} stage3/${obj}
  if [ $? != 0 ]; then
    echo "Binary files for ${obj} differ"
    ret=1
  fi
done

echo "Finished: Returning $ret"
exit $ret