text: ##############################################################################
  # Copyright (c) 2013-2018, Lawrence Livermore National Security, LLC.
  # Produced at the Lawrence Livermore National Laboratory.
  #
  # This file is part of Spack.
  # Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
  # LLNL-CODE-647188
  #
  # For details, see https://github.com/spack/spack
  # Please also see the NOTICE and LICENSE files for our notice and the LGPL.
  #
  # This program is free software; you can redistribute it and/or modify
  # it under the terms of the GNU Lesser General Public License (as
  # published by the Free Software Foundation) version 2.1, February 1999.
  #
  # This program is distributed in the hope that it will be useful, but
  # WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
  # conditions of the GNU Lesser General Public License for more details.
  #
  # You should have received a copy of the GNU Lesser General Public
  # License along with this program; if not, write to the Free Software
  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  ##############################################################################
  from spack import *
  
  
  class Mrnet(AutotoolsPackage):
      """The MRNet Multi-Cast Reduction Network."""
      homepage = "http://paradyn.org/mrnet"
      url      = "http://ftp.cs.wisc.edu/pub/paradyn/mrnet/mrnet_5.0.1.tar.gz"
      list_url = "http://ftp.cs.wisc.edu/paradyn/mrnet"
  
      version('5.0.1-3', git='https://github.com/dyninst/mrnet.git')
      version('5.0.1-2', git='https://github.com/dyninst/mrnet.git',
              commit='20b1eacfc6d680d9f6472146d2dfaa0f900cc2e9')
      version('5.0.1', '17f65738cf1b9f9b95647ff85f69ecdd')
      version('4.1.0', '5a248298b395b329e2371bf25366115c')
      version('4.0.0', 'd00301c078cba57ef68613be32ceea2f')
  
      variant('cti', default=False,
              description="Build the MRNet with the CTI startup option")
      variant('lwthreads', default=False,
              description="Also build the MRNet LW threadsafe libraries")
      parallel = False
  
      depends_on("boost")
      depends_on("cti", when='+cti')
  
      def configure_args(self):
          spec = self.spec
          config_args = ['--enable-shared']
  
          # Build the MRNet LW thread safe libraries when the
          # lwthreads variant is present
          if '+lwthreads' in spec:
              config_args.append('--enable-ltwt-threadsafe')
          # Build the MRNet with CTI based start-up when
          # the cti variant is present
          if '+cti' in spec:
              config_args.append('--with-startup=cray-cti')
              cti = self.spec['cti'].prefix
              config_args.append('--with-craycti-inc=-I%s/include' % cti)
              config_args.append('--with-craycti-lib=-I%s/lib' % cti)
          return config_args
  