# 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 *
import os


class Dsdp(MakefilePackage):
    """The DSDP software is a free open source implementation of an
    interior-point method for semidefinite programming. It provides primal and
    dual solutions, exploits low-rank structure and sparsity in the data, and
    has relatively low memory requirements for an interior-point method. It
    allows feasible and infeasible starting points and provides approximate
    certificates of infeasibility when no feasible solution exists."""

    homepage = "http://www.mcs.anl.gov/hs/software/DSDP/"
    url      = "http://www.mcs.anl.gov/hs/software/DSDP/DSDP5.8.tar.gz"

    version('5.8', sha256='26aa624525a636de272c0b329e2dfd01a0d5b7827f1c1c76f393d71e37dead70')

    depends_on('blas')
    depends_on('lapack')

    patch('malloc.patch')

    build_targets = ['dsdpapi']

    def edit(self, spec, prefix):
        make_include = FileFilter('make.include')

        # STEP 1: Set DSDPROOT.
        make_include.filter('^#DSDPROOT.*=.*',
                            'DSDPROOT = {0}'.format(os.getcwd()))

        # STEP 2: Set the name of the C compiler.
        make_include.filter('^CC.*=.*', 'CC = {0}'.format(spack_cc))

        # STEP 5:
        # Location of BLAS AND LAPACK libraries.
        # Also include the math library and other libraries needed to
        # link the BLAS to the C files that call them.
        lapackblas = spec['lapack'].libs + spec['blas'].libs
        make_include.filter('^LAPACKBLAS.*=.*',
                            'LAPACKBLAS = {0}'.format(
                                lapackblas.link_flags + ' -lm'))

    def install(self, spec, prefix):
        # Manual installation
        install_tree('lib', prefix.lib)
        install_tree('include', prefix.include)
