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# Copyright 2013-2021 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 Opium(AutotoolsPackage):
    """DFT pseudopotential generation project"""

    homepage = "http://opium.sourceforge.net"
    url = "https://downloads.sourceforge.net/project/opium/opium/opium-v3.8/opium-v3.8-src.tgz"

    version('4.1', sha256='e5a102b52601ad037d8a7b3e2dbd295baad23b8c1e4908b9014df2e432c23c60')
    version('3.8', sha256='edee6606519330aecaee436ee8cfb0a33788b5677861d59e38aba936e87d5ad3')

    variant('external-lapack', default=False,
            description='Links to externally installed LAPACK')

    depends_on('lapack', when='+external-lapack')

    parallel = False

    def patch(self):
        if '+external-lapack' in self.spec:
            with working_dir('src'):
                filter_file(r'(^subdirs=.*) lapack', r'\1', 'Makefile')

    def configure_args(self):
        options = []
        if '+external-lapack' in self.spec:
            options.append('LDFLAGS={0}'.format(self.spec['lapack'].libs.ld_flags))

        return options

    def install(self, spec, prefix):
        # opium does not have a make install target :-((
        mkdirp(self.prefix.bin)
        install(join_path(self.stage.source_path, 'opium'),
                self.prefix.bin)