##############################################################################
# Copyright (c) 2013-2018, Lawrence Livermore National Security, LLC.
# Produced at the Lawrence Livermore National Laboratory.
#
# This file is part of Spack.
# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
# LLNL-CODE-647188
#
# For details, see https://github.com/spack/spack
# Please also see the NOTICE and LICENSE files for our notice and the LGPL.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License (as
# published by the Free Software Foundation) version 2.1, February 1999.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
# conditions of the GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##############################################################################
from spack import *


class LinuxHeaders(Package):
    """The Linux kernel headers."""

    homepage = "https://www.kernel.org/"
    url      = "https://www.kernel.org/pub/linux/kernel/v4.x/linux-4.9.10.tar.xz"
    list_url = "https://www.kernel.org/pub/linux/kernel"
    list_depth = 2

    version('4.9.10', 'ce5ab2a86c9b880617e36e84aa2deb6c')

    def setup_environment(self, spack_env, run_env):
        # This variable is used in the Makefile. If it is defined on the
        # system, it can break the build if there is no build recipe for
        # that specific ARCH
        spack_env.unset('ARCH')

    def install(self, spec, prefix):
        make('headers_install', 'INSTALL_HDR_PATH={0}'.format(prefix))