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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)

import os

from spack import *


class PpopenApplBem(MakefilePackage):
    """ppOpen-APPL/BEM is software used to support a boundary element analysis
    executed on a parallel computer.

    The current version includes a software framework for a parallel BEM
    analysis and an H-matrix library.
    If you want to use the framework based on dense matrix computations,
    please move to the directory 'src/framework' and
    'src/framework_with_template'.
    If you want to use the H-matrix library, please
    move to the directly 'src/HACApK_with_BEM-BB-framework_1.0.0'.
    """

    homepage = "http://ppopenhpc.cc.u-tokyo.ac.jp/ppopenhpc/"
    git = "https://github.com/Post-Peta-Crest/ppOpenHPC.git"

    version('master', branch='APPL/BEM')

    depends_on('mpi')

    parallel = False
    hacapk_src_dir = join_path(
        'HACApK_1.0.0',
        'src',
        'HACApK_with_BEM-BB-framework_1.0.0'
    )
    src_directories = [
        join_path('bem-bb-framework_dense', 'src', 'framework_with_templates'),
        join_path('bem-bb-framework_dense', 'src', 'framework'),
        hacapk_src_dir
    ]

    def edit(self, spec, prefix):
        flags = [self.compiler.openmp_flag]
        fflags = flags[:]
        if spec.satisfies('%gcc'):
            fflags.append('-ffree-line-length-none')
        filter_file(
            'bem-bb-SCM.out',
            'HACApK-bem-bb-sSCM.out',
            join_path(self.hacapk_src_dir, 'Makefile')
        )
        for d in self.src_directories:
            with working_dir(d):
                with open('Makefile', 'a') as m:
                    m.write('ifeq ($(SYSTEM),spack)\n')
                    m.write('    CC = {0}\n'.format(spec['mpi'].mpicc))
                    m.write('    F90 = {0}\n'.format(spec['mpi'].mpifc))
                    m.write('    CCFLAGS = {0}\n'.format(' '.join(flags)))
                    m.write('    F90FLAGS = {0}\n'.format(' '.join(fflags)))
                    m.write('    FFLAGS = {0}\n'.format(' '.join(fflags)))
                    m.write('    LDFLAGS = {0}\n'.format(' '.join(flags)))
                    m.write('endif\n')

    def build(self, spec, prefix):
        for d in self.src_directories:
            with working_dir(d):
                make('SYSTEM=spack')

    def install(self, spec, prefix):
        mkdir(prefix.bin)
        mkdir(prefix.src)
        for d in self.src_directories:
            for f in find(d, '*.out'):
                copy(f, prefix.bin)
            install_src = join_path(prefix.src, os.path.basename(d))
            mkdir(install_src)
            install_tree(d, install_src)
            with working_dir(install_src):
                make('clean')