require 'formula'

class Gromacs < Formula
  homepage 'http://www.gromacs.org/'
  url 'ftp://ftp.gromacs.org/pub/gromacs/gromacs-4.5.5.tar.gz'
  sha1 'ce4b4f9a0453dd2ffea72f28ea0bc7bb7a72f479'

  option 'enable-mpi', "Enables MPI support"
  option 'enable-double',"Enables double precision"
  option 'without-x', "Disable the X11 visualizer"

  depends_on :x11 unless build.include? 'without-x'
  depends_on 'fftw'

  def install
    args = ["--prefix=#{prefix}"]
    args << "--enable-mpi" if build.include? 'enable-mpi'
    args << "--enable-double" if build.include? 'enable-double'
    args << "--without-x" if build.include? 'without-x'

    system "./configure", *args
    system "make"
    ENV.j1
    system "make install"
  end
end