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# Copyright 2013-2022 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)

import os

from spack.package import *


class Kadath(CMakePackage):
    """KADATH SPECTRAL SOLVER.

    The Frankfurt University/Kadath (FUKA) Initial Data solver branch is
    a collection of ID solvers aimed at delivering consistent initial
    data (ID) solutions to the eXtended Conformal Thin-Sandwich (XCTS)
    formulation of Einstein's field equations for a variety of compact
    object configurations to include extremely compact, asymmetric, and
    mixed spin binaries.
    """

    homepage = "https://kadath.obspm.fr/fuka/"
    git      = "https://gitlab.obspm.fr/grandcle/Kadath.git"

    maintainers = ['eschnett']

    version('fuka', branch='fuka')

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

    variant('codes', multi=True,
            description="Codes to enable",
            values=('none', 'BBH', 'BH', 'BHNS', 'BNS', 'NS'),
            default='none')

    depends_on('blas')
    depends_on('boost cxxstd=17')         # kadath uses std=C++17
    depends_on('cmake @2.8:', type='build')
    depends_on('fftw-api @3:')
    depends_on('gsl')
    depends_on('lapack')
    depends_on('mpi', when='+mpi')
    depends_on('pgplot')
    depends_on('scalapack')

    root_cmakelists_dir = 'build_release'

    def patch(self):
        for code in self.spec.variants['codes'].value:
            if code != 'none':
                # Disable unwanted explicit include directory settings
                filter_file(r"include_directories\(/usr",
                            "# include_directories(/usr",
                            join_path("codes", code, "CMakeLists.txt"))

    def setup_build_environment(self, env):
        env.set('HOME_KADATH', self.stage.source_path)

    def cmake_args(self):
        return [
            # kadath uses a non-standard option to enable MPI
            self.define_from_variant('PAR_VERSION', 'mpi'),
        ]

    def cmake(self, spec, prefix):
        options = self.std_cmake_args
        options += self.cmake_args()
        options.append(os.path.abspath(self.root_cmakelists_dir))
        with working_dir(self.build_directory, create=True):
            cmake(*options)
        for code in self.spec.variants['codes'].value:
            if code != 'none':
                with working_dir(join_path("codes", code)):
                    cmake(*options)

    def build(self, spec, prefix):
        with working_dir(self.build_directory):
            make(*self.build_targets)
        for code in self.spec.variants['codes'].value:
            if code != 'none':
                with working_dir(join_path("codes", code)):
                    make(*self.build_targets)

    def install(self, spec, prefix):
        mkdirp(prefix.include)
        install_tree('include', prefix.include)
        mkdirp(prefix.lib)
        install_tree('lib', prefix.lib)