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 OpenpmdApi(CMakePackage):
      """API for easy reading and writing of openPMD files"""
  
      homepage = "http://www.openPMD.org"
      url      = "https://github.com/openPMD/openPMD-api/archive/1.0.0.tar.gz"
      maintainers = ['ax3l']
  
      version('develop', branch='dev',
              git='https://github.com/openPMD/openPMD-api.git')
  
      variant('mpi', default=True,
              description='Enable parallel I/O')
      variant('hdf5', default=True,
              description='Enable HDF5 support')
      variant('adios1', default=False,
              description='Enable ADIOS1 support')
      variant('adios2', default=False,
              description='Enable ADIOS2 support')
      # variant('json', default=True,
      #         description='Enable JSON support')
      variant('python', default=True,
              description='Enable Python bindings')
  
      depends_on('cmake@3.10.0:', type='build')
      depends_on('mpark-variant@1.3.0:')
      depends_on('catch@2.2.1: ~single_header', type='test')
      depends_on('mpi@2.3:', when='+mpi')  # might become MPI 3.0+
      depends_on('hdf5@1.8.13:', when='+hdf5')
      depends_on('hdf5@1.8.13: ~mpi', when='~mpi +hdf5')
      depends_on('hdf5@1.8.13: +mpi', when='+mpi +hdf5')
      depends_on('adios@1.10.0:', when='+adios1')
      depends_on('adios@1.10.0: ~mpi', when='~mpi +adios1')
      depends_on('adios@1.10.0: +mpi', when='+mpi +adios1')
      depends_on('adios2@2.1.0:', when='+adios2')
      depends_on('adios2@2.1.0: ~mpi', when='~mpi +adios2')
      depends_on('adios2@2.1.0: +mpi', when='+mpi +adios2')
      # ideally we want 2.3.0+ for full C++11 CT function signature support
      depends_on('py-pybind11@2.2.3:', when='+python')
      depends_on('py-numpy', when='+python', type=['test', 'run'])
  
      extends('python', when='+python')
  
      def cmake_args(self):
          spec = self.spec
  
          args = [
              # variants
              '-DopenPMD_USE_MPI:BOOL={0}'.format(
                  'ON' if '+mpi' in spec else 'OFF'),
              '-DopenPMD_USE_HDF5:BOOL={0}'.format(
                  'ON' if '+hdf5' in spec else 'OFF'),
              '-DopenPMD_USE_ADIOS1:BOOL={0}'.format(
                  'ON' if '+adios1' in spec else 'OFF'),
              '-DopenPMD_USE_ADIOS2:BOOL={0}'.format(
                  'ON' if '+adios2' in spec else 'OFF'),
              # '-DopenPMD_USE_JSON:BOOL={0}'.format(
              #     'ON' if '+json' in spec else 'OFF'),
              '-DopenPMD_USE_PYTHON:BOOL={0}'.format(
                  'ON' if '+python' in spec else 'OFF'),
              # tests and examples
              '-DBUILD_TESTING:BOOL={0}'.format(
                  'ON' if self.run_tests else 'OFF'),
              '-DBUILD_EXAMPLES:BOOL={0}'.format(
                  'ON' if self.run_tests else 'OFF'),
          ]
  
          if spec.satisfies('+python'):
              args.append('-DopenPMD_USE_INTERNAL_PYBIND11:BOOL=OFF')
              args.append('-DPYTHON_EXECUTABLE:FILEPATH={0}'.format(
                          self.spec['python'].command.path))
  
          # switch internally shipped third-party libraries for spack
          args.append('-DopenPMD_USE_INTERNAL_VARIANT:BOOL=OFF')
          if self.run_tests:
              args.append('-DopenPMD_USE_INTERNAL_CATCH:BOOL=OFF')
  
          return args
  