# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)


from spack import *


class Ebms(MakefilePackage):
    """This is a miniapp for the Energy Banding Monte Carlo (EBMC)
       neutron transportation simulation code.  It is adapted from a
       similar miniapp provided by Andrew Siegel, whose algorithm is
       described in [1], where only one process in a compute node
       is used, and the compute nodes are divided into memory nodes
       and tracking nodes.    Memory nodes do not participate in particle
       tracking. Obviously, there is a lot of resource waste in this design.
    """

    homepage = "https://github.com/ANL-CESAR/EBMS"
    git      = "https://github.com/ANL-CESAR/EBMS.git"

    version('develop')

    variant('mpi', default=True, description='Build with MPI support')

    depends_on('mpi@2:', when='+mpi')

    tags = ['proxy-app']

    @property
    def build_targets(self):

        targets = []

        cflags = '-g -O3 -std=gnu99'

        if '+mpi' in self.spec:
            targets.append('CC={0}'.format(self.spec['mpi'].mpicc))

        targets.append('CFLAGS={0}'.format(cflags))

        return targets

    def install(self, spec, prefix):
        mkdir(prefix.bin)
        install('ebmc-iallgather', prefix.bin)
        install('ebmc-rget', prefix.bin)
        install_tree('run', join_path(prefix, 'run'))
        install_tree('inputs', join_path(prefix, 'inputs'))
