This may belong on SuperUser, but assuming you mean "6.5.6 or later"... Ensure that a sources entry for Squeeze (Testing) exists in /etc/apt/sources.list: deb-src http://http.us.debian.org/debian squeeze main contrib non-free Run apt-get update (as root) Run apt-get build-dep imagemagick (as root, this installs the build-dependencies) Change to a directory you'll be using for building. For the nex