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##############################################################################
# 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 LICENSE file 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 Pennant(MakefilePackage):
    """PENNANT is an unstructured mesh physics mini-app designed
       for advanced architecture research. It contains mesh data
       structures and a few physics algorithms adapted
       from the LANL rad-hydro code FLAG, and gives a sample of
       the typical memory access patterns of FLAG.
    """

    homepage = "https://github.com/lanl/PENNANT"
    url      = "https://github.com/lanl/PENNANT/archive/pennant_v0.9.tar.gz"
    tags     = ['proxy-app']

    version('0.9', '4f21ba3836b2721436277308c2e33f45')
    version('0.8', 'a1afff4914fef8140c3024a02d7c993c')
    version('0.7', 'd642a030d5388f65f799504803794a4e')
    version('0.6', '8ab2d4b47ec9870643bfe6f262cd47a4')
    version('0.5', '534547878c698b9926e2886c74e10831')
    version('0.4', '0f67d8da0a92bd42d92a4823d3e4dbe1')

    variant('mpi', default=True, description='Build with MPI support')
    variant('openmp', default=True, description='Build with OpenMP support')
    variant('debug', default=False, description='Enable debug')

    depends_on('mpi', when='+mpi')

    def edit(self, spec, prefix):
        makefile = FileFilter('Makefile')
        debug = '-g'
        opt = '-O3'

        if self.compiler.name == 'intel':
            opt += ' -fast -fno-alias'
        if self.compiler.name == 'pgi':
            opt += ' -fastsse'

        makefile.filter(
            'CXXFLAGS_DEBUG .*',
            'CXXFLAGS_DEBUG := {0}'.format(debug))
        makefile.filter(
            'CXXFLAGS_OPT .*',
            'CXXFLAGS_OPT := {0}'.format(opt))
        makefile.filter(
            'CXXFLAGS_OPENMP .*',
            'CXXFLAGS_OPENMP := {0}'.format(self.compiler.openmp_flag))

        if '+mpi' in spec:
            makefile.filter(
                'CXX .*',
                'CXX := {0}'.format(spec['mpi'].mpicxx))
        else:
            makefile.filter('-DUSE_MPI', '#')
            makefile.filter('CXX .*', 'CXX := c++')

        if '+openmp' not in spec:
            makefile.filter('.*CXXFLAGS_OPENMP.*', '#')

        if '+debug' in spec:
            makefile.filter(
                '.*(CXXFLAGS_OPT).*',
                'CXXFLAGS := $(CXXFLAGS_DEBUG)')

    def install(self, spec, prefix):

        def install_dir(dirname):
            install_tree(dirname, join_path(prefix, dirname))

        mkdirp(prefix.bin)
        install('build/pennant', prefix.bin)
        install_dir('doc')
        install_dir('test')
        install('LICENSE', prefix)
        install('README', prefix)