#!/bin/bash
  
  set -e
  
  xroot=${1:-~/xroot}
  
  mkdir -p $xroot
  cd $xroot
  
  add_deb () {
    echo "Adding deb package $1 to $xroot"
    wget -nv $1
    dpkg-deb -x ${1##*/} $xroot
  }
  
  # OpenBLAS and Netlib LAPACK binaries from Trusty.
  add_deb http://mirrors.kernel.org/ubuntu/pool/main/l/lapack/liblapacke-dev_3.5.0-2ubuntu1_amd64.deb
  add_deb http://mirrors.kernel.org/ubuntu/pool/main/l/lapack/liblapacke_3.5.0-2ubuntu1_amd64.deb
  add_deb http://mirrors.kernel.org/ubuntu/pool/universe/o/openblas/libopenblas-dev_0.2.8-6ubuntu1_amd64.deb
  add_deb http://mirrors.kernel.org/ubuntu/pool/universe/o/openblas/libopenblas-base_0.2.8-6ubuntu1_amd64.deb
  add_deb http://mirrors.kernel.org/ubuntu/pool/main/b/blas/libblas-dev_1.2.20110419-7_amd64.deb
  add_deb http://mirrors.kernel.org/ubuntu/pool/main/b/blas/libblas3_1.2.20110419-7_amd64.deb
  
  if [[ "$(ccache --version 2>/dev/null | sed -n '1{s/^[a-z ]*//;s/\./0/g;p}')" -lt 30304 ]]; then
      add_deb http://mirrors.kernel.org/debian/pool/main/c/ccache/ccache_3.3.4-1_amd64.deb
  fi
  
  # Show extracted package files.
  find $xroot | sort