class Nacl < Formula
  homepage "http://nacl.cr.yp.to/"
  url "https://hyperelliptic.org/nacl/nacl-20110221.tar.bz2"
  mirror "https://mirrors.kernel.org/debian/pool/main/n/nacl/nacl_20110221.orig.tar.bz2"
  sha1 "6007a6aee249f5a534ec53fddfc364601fba9629"

  bottle do
    cellar :any
    sha1 "a2fd2a9f121f7c20dee040ae70cdd3e05708b98f" => :yosemite
    sha1 "ec947d17a2d50bca7e3ecd24ff24ef19481afac3" => :mavericks
    sha1 "074b5a2eda0007f256830e44314e55c152b6c03e" => :mountain_lion
  end

  def install
    system "./do" # This takes a while since it builds *everything*

    # NaCL has an odd compilation model (software by djb, who'da thunk it?)
    # and installs the resulting binaries in a directory like:
    #    <nacl source>/build/<hostname>/lib/<arch>/libnacl.a
    #    <nacl source>/build/<hostname>/include/<arch>/crypto_box.h
    # etc. Each of these is optimized for the specific hardware it's
    # compiled on.
    #
    # It also builds both x86 and x86_64 copies if your compiler can
    # handle it. Here we only install one copy, based on if you're a
    # 64bit system or not. A --universal could come later though I guess.
    archstr  = Hardware.is_64_bit? ? "amd64" : "x86"
    hoststr  = `hostname | sed 's/\\..*//' | tr -cd '[a-z][A-Z][0-9]'`.strip

    # Don't include cpucycles.h
    include.install Dir["build/#{hoststr}/include/#{archstr}/crypto_*.h"]
    include.install "build/#{hoststr}/include/#{archstr}/randombytes.h"

    # Add randombytes.o to the libnacl.a archive - I have no idea why it's separated,
    # but plenty of the key generation routines depend on it. Users shouldn't have to
    # know this.
    nacl_libdir = "build/#{hoststr}/lib/#{archstr}"
    system "ar", "-r", "#{nacl_libdir}/libnacl.a", "#{nacl_libdir}/randombytes.o"
    lib.install "#{nacl_libdir}/libnacl.a"
  end
end