http://users.zenwalk.org/user-accounts/rsamurti/arpack/SLKBUILD
http://users.zenwalk.org/user-accounts/rsamurti/arpack/build-arpack.sh
http://www.caam.rice.edu/software/ARPACK/SRC/arpack96.tar.gz
http://www.caam.rice.edu/software/ARPACK/SRC/patch.tar.gz