Library/Formula/llvm.rb


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require 'formula'

class Clang <Formula
  url       'http://llvm.org/releases/2.7/clang-2.7.tgz'
  homepage  'http://llvm.org/'
  md5       'b83260aa8c13494adf8978b5f238bf1b'
end

class Llvm <Formula
  url       'http://llvm.org/releases/2.7/llvm-2.7.tgz'
  homepage  'http://llvm.org/'
  md5       'ac322661f20e7d6c810b1869f886ad9b'

  def options
    [
      ['--with-clang', 'Also build & install clang']
    ]
  end

  def clang?
    ARGV.include? '--with-clang'
  end

  def install
    ENV.gcc_4_2 # llvm can't compile itself

    if clang?
      clang_dir = File.join(Dir.pwd, 'tools', 'clang')

      Clang.new.brew {
        FileUtils.mkdir_p clang_dir
        FileUtils.mv Dir['*'], clang_dir
      }
    end

    system "./configure", "--prefix=#{prefix}",
                          "--enable-targets=host-only",
                          "--enable-optimized"
    system "make"
    system "make install" # seperate steps required, otherwise the build fails

    if clang?
      Dir.chdir clang_dir do
        system "make install"
      end
    end
  end
end