require 'formula' class Gromacs < Formula url 'ftp://ftp.gromacs.org/pub/gromacs/gromacs-4.5.3.tar.gz' homepage 'http://www.gromacs.org/' md5 'd5911585cd0e0b996dbbdcfb4c3bcf6b' depends_on 'fftw' def options [ ['--enable-mpi', "Enables MPI support"], ['--enable-double',"Enables double precision"] ] end def install args = ["--prefix=#{prefix}"] args << "--enable-mpi" if ARGV.include? '--enable-mpi' args << "--enable-double" if ARGV.include? '--enable-double' system "./configure", *args system "make" ENV.j1 system "make install" end end