require 'formula'

class OpenMpi < Formula
  homepage 'http://www.open-mpi.org/'
  url 'http://www.open-mpi.org/software/ompi/v1.8/downloads/openmpi-1.8.3.tar.bz2'
  sha1 '4be9c5d2a8baee6a80bde94c6485931979a428fe'

  bottle do
    sha1 "60e953d115aa38e7495c7de774518eda83abb982" => :yosemite
    sha1 "257dfda61a3a2b75c1d810c25e034b4e8998ff0e" => :mavericks
    sha1 "6ef00e19f8ceb677ca370c209ef2f1cefd085e09" => :mountain_lion
  end

  option 'disable-fortran', 'Do not build the Fortran bindings'
  option 'enable-mpi-thread-multiple', 'Enable MPI_THREAD_MULTIPLE'
  option :cxx11

  conflicts_with 'mpich2', :because => 'both install mpi__ compiler wrappers'
  conflicts_with 'lcdf-typetools', :because => 'both install same set of binaries.'

  depends_on :fortran unless build.include? 'disable-fortran'
  depends_on 'libevent'

  def install
    ENV.cxx11 if build.cxx11?

    args = %W[
      --prefix=#{prefix}
      --disable-dependency-tracking
      --disable-silent-rules
      --enable-ipv6
      --with-libevent=#{Formula["libevent"].opt_prefix}
    ]
    if build.include? 'disable-fortran'
      args << '--disable-mpi-f77' << '--disable-mpi-f90'
    end

    if build.include? 'enable-mpi-thread-multiple'
      args << '--enable-mpi-thread-multiple'
    end

    system './configure', *args
    system 'make', 'all'
    system 'make', 'check'
    system 'make', 'install'

    # If Fortran bindings were built, there will be stray `.mod` files
    # (Fortran header) in `lib` that need to be moved to `include`.
    include.install Dir["#{lib}/*.mod"]

    # Move vtsetup.jar from bin to libexec.
    libexec.install bin/'vtsetup.jar'
    inreplace bin/'vtsetup', '$bindir/vtsetup.jar', '$prefix/libexec/vtsetup.jar'
  end
end