Vagrantfile.llvm.rb

Vagrant.configure(2) do |config|
  config.vm.box = "hashicorp/precise64"
  
  # ...

  # This mess of B.S., constructed mostly from <http://apt.llvm.org>, is, as far as I can tell, The
  # Right Way to get non-ancient clang installed on Precise. (Why am I using Precise again? 'cuz
  # Vagrant says so? ಠ_ಠ)
  #
  # Yes, non-ancient clang requires slightly-less-ancient gcc to build ... which isn't available on
  # Precise ... so *that* has to be installed manually, *too*. -_-
  config.vm.provision "shell", privileged: true, inline: <<-SHELL
    export DEBIAN_FRONTEND=noninteractive

    apt-get -q -y update
    apt-get -q -y install python-software-properties                                            2>&1

    add-apt-repository -y ppa:ubuntu-toolchain-r/test
    add-apt-repository -y 'deb http://apt.llvm.org/precise/ llvm-toolchain-precise-3.8 main'
    apt-get -q -y update

    #update-alternatives --remove-all gcc
    apt-get -q -y install gcc-4.9

    update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.9 10
    update-alternatives --install /usr/bin/cc cc /usr/bin/gcc 30                                2>&1
    update-alternatives --set cc /usr/bin/gcc

    update-alternatives --config gcc

    gpg --keyserver http://apt.llvm.org/llvm-snapshot.gpg.key --recv-keys 15CF4D18AF4F7421      2>&1

    #update-alternatives --remove-all clang
    apt-get -q -y --force-yes install clang-3.8 lldb-3.8

    update-alternatives --install /usr/bin/clang clang /usr/bin/clang-3.8 10
    update-alternatives --install /usr/bin/cc cc /usr/bin/clang 40
    update-alternatives --install /usr/bin/lldb lldb /usr/bin/lldb-3.8 10
    update-alternatives --install /usr/bin/lldb-mi lldb-mi /usr/bin/lldb-mi-3.8 10
    update-alternatives --install /usr/bin/lldb-server lldb-server /usr/bin/lldb-server-3.8 10

    update-alternatives --config clang
    update-alternatives --config lldb
    update-alternatives --config lldb-mi
    update-alternatives --config lldb-server
  SHELL
  
  # ...
end