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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 *
import glob


class Pfunit(CMakePackage):
    """pFUnit is a unit testing framework enabling JUnit-like testing of
    serial and MPI-parallel software written in Fortran."""

    homepage = "http://pfunit.sourceforge.net/"
    url = "https://github.com/Goddard-Fortran-Ecosystem/pFUnit/releases/download/v4.1.10/pFUnit-4.1.10.tar"

    maintainers = ['citibeth']

    version('4.1.14', sha256='bada2be8d7e69ca1f16209ba92293fa1c06748b78534d71b24b2c825450a495f')
    version('4.1.13', sha256='f388e08c67c51cbfd9f3a3658baac912b5506d2fc651410cd34a21260c309630')
    version('4.1.12', sha256='7d71b0fb996497fe9a20eb818d02d596cd0d3cded1033a89a9081fbd925c68f2')
    version('4.1.11', sha256='16160bac223aaa3ed2b27e30287d25fdaec3cf6f2c570ebd8d61196e6aa6180f')
    version('4.1.10', sha256='051c35ad9678002943f4a4f2ab532a6b44de86ca414751616f93e69f393f5373')
    version('3.3.3',  sha256='9f673b58d20ad23148040a100227b4f876458a9d9aee0f0d84a5f0eef209ced5')
    version('3.3.2',  sha256='b1cc2e109ba602ea71bccefaa3c4a06e7ab1330db9ce6c08db89cfde497b8ab8')
    version('3.3.1',  sha256='f8f4bea7de991a518a0371b4c70b19e492aa9a0d3e6715eff9437f420b0cdb45')
    version('3.3.0',  sha256='4036ab448b821b500fbe8be5e3d5ab3e419ebae8be82f7703bcf84ab1a0ff862')
    version('3.2.10', sha256='b9debba6d0e31b682423ffa756531e9728c10acde08c4d8e1609b4554f552b1a')
    version('3.2.9',  sha256='403f9a150865700c8b4240fd033162b8d3e8aeefa265c50c5a6fe14c455fbabc')

    variant('shared', default=True,
            description='Build shared library in addition to static')
    variant('mpi', default=False, description='Enable MPI')
    variant('use_comm_world', default=False,
            description='Enable MPI_COMM_WORLD for testing')
    variant('openmp', default=False, description='Enable OpenMP')
    variant('docs', default=False, description='Build docs')

    variant('max_array_rank', values=int, default=5,
            description='Max number of Fortran dimensions of array asserts')

    depends_on('python@2.7:', type=('build', 'run'))  # python3 too!
    depends_on('mpi', when='+mpi')
    depends_on('m4', when='@4.1.5:', type='build')

    conflicts("%gcc@:8.3.9", when="@4.0.0:", msg='Older versions of GCC do '
              'not support the Fortran 2008 features required by new pFUnit.')
    # See https://github.com/Goddard-Fortran-Ecosystem/pFUnit/pull/179
    conflicts("+shared", when="@4.0.0:")
    conflicts("+use_comm_world", when="~mpi")
    patch("mpi-test.patch", when="@:3.99.99 +use_comm_world")

    def patch(self):
        # The package tries to put .mod files in directory ./mod;
        # spack needs to put them in a standard location:
        for file in glob.glob('*/CMakeLists.txt'):
            filter_file(r'.*/mod($|[^\w].*)', '', file)

    def url_for_version(self, version):
        # Version 4 uses a different URL syntax than previous versions
        url_base = "https://github.com/Goddard-Fortran-Ecosystem/pFUnit"
        if version >= Version('4'):
            url = url_base + "/releases/download/v{0}/pFUnit-{0}.tar"
        else:
            url = url_base + "/archive/{0}.tar.gz"

        return url.format(version.dotted)

    def cmake_args(self):
        spec = self.spec
        args = [
            '-DPYTHON_EXECUTABLE=%s' % spec['python'].command,
            self.define_from_variant('BUILD_SHARED', 'shared'),
            '-DCMAKE_Fortran_MODULE_DIRECTORY=%s' % spec.prefix.include,
            self.define_from_variant('BUILD_DOCS', 'docs'),
            self.define_from_variant('OPENMP', 'openmp'),
            '-DMAX_RANK=%s' % spec.variants['max_array_rank'].value]

        if self.spec.satisfies('%gcc@10:'):
            args.append('-DCMAKE_Fortran_FLAGS_DEBUG=-g -O2 -fallow-argument-mismatch')

        if spec.satisfies('@4.0.0:'):
            args.append('-DSKIP_MPI=%s' % ('YES' if '~mpi' in spec else 'NO'))
        else:
            args.append(self.define_from_variant('MPI', 'mpi'))

        if spec.satisfies('+mpi'):
            args.extend(['-DMPI_USE_MPIEXEC=YES',
                         '-DCMAKE_Fortran_COMPILER=%s' % spec['mpi'].mpifc])

        return args

    def check(self):
        """Searches the CMake-generated Makefile for the target ``test``
        and runs it if found.
        """
        args = ['tests']
        if self.spec.satisfies('+mpi'):
            args.append('MPI=YES')
        if self.spec.satisfies('+openmp'):
            args.append('OPENMP=YES')
        with working_dir(self.build_directory):
            make(*args)

    def compiler_vendor(self):
        vendors = {'%gcc': 'GNU', '%clang': 'GNU', '%intel': 'Intel',
                   '%pgi': 'PGI', '%nag': 'NAG', '%cce': 'Cray'}
        for key, value in vendors.items():
            if self.spec.satisfies(key):
                return value
        raise InstallError('Unsupported compiler.')

    def setup_build_environment(self, env):
        env.set('PFUNIT', self.spec.prefix)
        env.set('F90_VENDOR', self.compiler_vendor())

    def setup_run_environment(self, env):
        env.set('PFUNIT', self.spec.prefix)
        env.set('F90_VENDOR', self.compiler_vendor())

    def setup_dependent_build_environment(self, env, dependent_spec):
        env.set('PFUNIT', self.spec.prefix)
        env.set('F90_VENDOR', self.compiler_vendor())