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# 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 *
import sys


class Nalu(CMakePackage):
    """Nalu: a generalized unstructured massively parallel low Mach flow code
       designed to support a variety of energy applications of interest
       built on the Sierra Toolkit and Trilinos solver Tpetra/Epetra stack
    """

    homepage = "https://github.com/NaluCFD/Nalu"
    git      = "https://github.com/NaluCFD/Nalu.git"

    version('master', branch='master')

    variant('openfast', default=False,
            description='Compile with OpenFAST support')
    variant('tioga', default=False,
            description='Compile with Tioga support')
    variant('hypre', default=False,
            description='Compile with Hypre support')
    variant('shared', default=(sys.platform != 'darwin'),
            description='Build Trilinos as shared library')
    variant('pic', default=True,
            description='Position independent code')

    depends_on('mpi')
    depends_on('yaml-cpp@0.5.3:')
    depends_on('trilinos+exodus+tpetra+muelu+belos+ifpack2+amesos2+zoltan+stk+boost~superlu-dist+superlu+hdf5+zlib+pnetcdf+shards~hypre@master,develop', when='+shared')
    # Cannot build Trilinos as a shared library with STK on Darwin
    # https://github.com/trilinos/Trilinos/issues/2994
    depends_on('trilinos~shared+exodus+tpetra+muelu+belos+ifpack2+amesos2+zoltan+stk+boost~superlu-dist+superlu+hdf5+zlib+pnetcdf+shards~hypre@master,develop', when='~shared')
    depends_on('openfast+cxx', when='+openfast')
    depends_on('tioga', when='+tioga')
    depends_on('hypre+mpi+int64', when='+hypre')

    def cmake_args(self):
        spec = self.spec
        options = []

        options.extend([
            '-DTrilinos_DIR:PATH=%s' % spec['trilinos'].prefix,
            '-DYAML_DIR:PATH=%s' % spec['yaml-cpp'].prefix,
            '-DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=%s' % (
                'ON' if '+pic' in spec else 'OFF'),
        ])

        if '+openfast' in spec:
            options.extend([
                '-DENABLE_OPENFAST:BOOL=ON',
                '-DOpenFAST_DIR:PATH=%s' % spec['openfast'].prefix
            ])
        else:
            options.append('-DENABLE_OPENFAST:BOOL=OFF')

        if '+tioga' in spec:
            options.extend([
                '-DENABLE_TIOGA:BOOL=ON',
                '-DTIOGA_DIR:PATH=%s' % spec['tioga'].prefix
            ])
        else:
            options.append('-DENABLE_TIOGA:BOOL=OFF')

        if '+hypre' in spec:
            options.extend([
                '-DENABLE_HYPRE:BOOL=ON',
                '-DHYPRE_DIR:PATH=%s' % spec['hypre'].prefix
            ])
        else:
            options.append('-DENABLE_HYPRE:BOOL=OFF')

        return options