tar -xjf zlib-1.2.7.tar.bz2
cd zlib-1.2.7
./configure --prefix=/usr
make && make check && make install
mv -v /usr/lib/libz.so.* /lib
ln -sfv ../../lib/libz.so.1.2.7 /usr/lib/libz.so
cd ..
rm -fr zlib-1.2.7