Raspberry Pi cross-compiling Vagrant VM

Vagrantfile

# -*- mode: ruby -*-
# vi: set ft=ruby fdl=99:

# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
VAGRANTFILE_API_VERSION = "2"

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
  config.vm.box = "ubuntu/trusty64"

  # Create a forwarded port mapping which allows access to a specific port
  # within the machine from a port on the host machine. In the example below,
  # accessing "localhost:8080" will access port 80 on the guest machine.
  # config.vm.network "forwarded_port", guest: 80, host: 8080

  # Create a private network, which allows host-only access to the machine
  # using a specific IP.
  config.vm.network "private_network", ip: "192.168.90.100"

  config.vm.provider "virtualbox" do |vb|
    vb.name = 'PiCompiler'
    vb.memory = 2048
    vb.cpus = 4
  end

  config.vm.provision "shell", args: [], inline: <<-EOS
    set -e

    # update and install software
    sudo dpkg --add-architecture i386
    apt-get update || true
    apt-get -y upgrade
    apt-get -y install git build-essential libc6:i386 libncurses5:i386 libstdc++6:i386

    # Set up SSH
    rm -f /root/.ssh/id_rsa # in case we're re-provisioning
    ssh-keygen -t rsa -N '' -f /root/.ssh/id_rsa
    cat /root/.ssh/id_rsa.pub >> /home/vagrant/.ssh/authorized_keys
    initctl reload-configuration

    # download pi tools
    git clone -q https://github.com/raspberrypi/tools.git /opt/pi-tools
    echo "export PATH=/opt/pi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin:$PATH" > /etc/profile.d/pi-tools.sh
    echo "Pi tools downloaded to /opt/pi-tools & added to PATH"
  EOS
end