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# Copyright 2013-2018 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 Dftfe(CMakePackage):
    """Real-space DFT calculations using Finite Elements"""

    homepage = "https://sites.google.com/umich.edu/dftfe/"
    url      = "https://github.com/dftfeDevelopers/dftfe/archive/0.5.1.tar.gz"

    maintainers = ['rmsds']

    version('0.6.0', sha256='66b633a3aae2f557f241ee45b2faa41aa179e4a0bdf39c4ae2e679a2970845a1')
    version('0.5.2', sha256='9dc4fa9f16b00be6fb1890d8af4a1cd3e4a2f06a2539df999671a09f3d26ec64')
    version('0.5.1', sha256='e47272d3783cf675dcd8bc31da07765695164110bfebbbab29f5815531f148c1')
    version('0.5.0', sha256='9aadb9a9b059f98f88c7756b417423dc67d02f1cdd2ed7472ba395fcfafc6dcb')

    variant('scalapack', default=True, description='Use ScaLAPACK, strongly recommended for problem sizes >5000 electrons')
    variant('build_type', default='Release',
            description='The build type to build',
            values=('Debug', 'Release'))

    depends_on('mpi')
    depends_on('dealii+p4est+petsc+slepc+int64+scalapack+mpi')
    depends_on('dealii+p4est+petsc+slepc+int64+scalapack+mpi@9.0.0:', when='@0.5.1:')
    depends_on('scalapack', when='+scalapack')
    depends_on('alglib')
    depends_on('libxc')
    depends_on('spglib')
    depends_on('libxml2')

    def cmake_args(self):
        spec = self.spec
        args = [
            '-DCMAKE_C_COMPILER={0}'.format(spec['mpi'].mpicc),
            '-DCMAKE_CXX_COMPILER={0}'.format(spec['mpi'].mpicxx),
            '-DALGLIB_DIR={0}'.format(spec['alglib'].prefix),
            '-DLIBXC_DIR={0}'.format(spec['libxc'].prefix),
            '-DXML_LIB_DIR={0}/lib'.format(spec['libxml2'].prefix),
            '-DXML_INCLUDE_DIR={0}/include'.format(spec['libxml2'].prefix),
            '-DSPGLIB_DIR={0}'.format(spec['spglib'].prefix),
        ]

        if spec.satisfies('^intel-mkl'):
            args.append('-DWITH_INTEL_MKL=ON')
        else:
            args.append('-DWITH_INTEL_MKL=OFF')

        if spec.satisfies('%gcc'):
            args.append('-DCMAKE_C_FLAGS=-fpermissive')
            args.append('-DCMAKE_CXX_FLAGS=-fpermissive')

        return args

    @when('@:0.5.2')
    def install(self, spec, prefix):
        mkdirp(prefix.bin)
        mkdirp(prefix.lib64)
        install(join_path(self.build_directory, 'main'),
                join_path(prefix.bin, 'dftfe'))
        install(join_path(self.build_directory, 'libdftfe.so'),
                prefix.lib64)