git fetch
git checkout 8af9b8c2b889d80c22d6bc26ba0df1afb79a30db

./configure -prefix=${CITYHASH_INSTALL_DIR} --enable-sse4.2

make -j ${NUM_PROC} CXXFLAGS="-g -O3 -msse4.2"
make install

tar cvfz ${CITYHASH_INSTALL_DIR}.tar.gz --exclude="./bin" -C ${CITYHASH_INSTALL_DIR} .

cd ${WORK_DIR}