# Copyright 2013-2019 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 Armadillo(CMakePackage):
    """Armadillo is a high quality linear algebra library (matrix maths)
    for the C++ language, aiming towards a good balance between speed and
    ease of use.
    """

    homepage = "http://arma.sourceforge.net/"
    url = "http://sourceforge.net/projects/arma/files/armadillo-7.200.1.tar.xz"

    version('8.100.1', 'd9762d6f097e0451d0cfadfbda295e7c')
    version('7.950.1', 'c06eb38b12cae49cab0ce05f96147147')
    version('7.900.1', '5ef71763bd429a3d481499878351f3be')
    version('7.500.0', '7d316fdf3c3c7ea92b64704180ae315d')
    version('7.200.2', 'b21585372d67a8876117fd515d8cf0a2')
    version('7.200.1', 'ed86d6df0058979e107502e1fe3e469e')

    variant('hdf5', default=False, description='Include HDF5 support')

    depends_on('cmake@2.8.12:', type='build')
    depends_on('arpack-ng')  # old arpack causes undefined symbols
    depends_on('blas')
    depends_on('lapack')
    depends_on('superlu@5.2:')
    depends_on('hdf5', when='+hdf5')

    patch('undef_linux.patch', when='platform=linux')

    def cmake_args(self):
        spec = self.spec

        # TUTORIAL: fix the lines below by adding the appropriate query to
        # the right dependency. To ask a dependency, e.g. `blas`, for the
        # list of libraries it provides it suffices to access its `libs`
        # attribute:
        #
        #    blas_libs = spec['blas'].libs
        #
        # The CMake variables below require a semicolon separated list:
        #
        #    blas_libs.joined(';')

        return [
            # ARPACK support
            '-DARPACK_LIBRARY={0}'.format('FIXME: arpack-ng'),
            # BLAS support
            '-DBLAS_LIBRARY={0}'.format('FIXME: blas'),
            # LAPACK support
            '-DLAPACK_LIBRARY={0}'.format('FIXME: lapack'),
            # SuperLU support
            '-DSuperLU_INCLUDE_DIR={0}'.format(spec['superlu'].prefix.include),
            '-DSuperLU_LIBRARY={0}'.format('FIXME: superlu'),
            # HDF5 support
            '-DDETECT_HDF5={0}'.format('ON' if '+hdf5' in spec else 'OFF')
        ]
