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##############################################################################
# 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 *
import os


class FluxCore(AutotoolsPackage):
    """ A next-generation resource manager (pre-alpha) """

    homepage = "https://github.com/flux-framework/flux-core"
    url      = "https://github.com/flux-framework/flux-core/releases/download/v0.8.0/flux-core-0.8.0.tar.gz"
    git      = "https://github.com/flux-framework/flux-core.git"

    version('master',  branch='master')
    version('0.10.0', 'a84a1ed53a69c805c253bc940540cbf667a059b2008fd2a6a9bb890a985ead08e88dcbba68c01567f887357306fbfded41b93cc33edfa7809955ba5ba5870284')
    version('0.9.0',  '70eaec1005aa49e8d8cf397570789cebedfb5d917efe963390d456ee4c473eefb15b0c81ea83f60a1fd057fe7be356bbafdebcae64b499844d194c48f6aefa05')
    version('0.8.0',  'b0fec05acedc530bcdf75b2477ac22f39d2adddc7af8ff76496208a5e1e8185b1b4a18677871d95c3cfbf34b05f391953651200917fe029931f4e2beb79d70df')

    # Avoid the infinite symlink issue
    # This workaround is documented in PR #3543
    build_directory = 'spack-build'

    variant('doc', default=False, description='Build flux manpages')
    variant('cuda', default=False, description='Build dependencies with support for CUDA')

    depends_on("zeromq@4.0.4:")
    depends_on("czmq@2.2:")
    depends_on("hwloc@1.11.1:1.99")
    depends_on("hwloc +cuda", when='+cuda')
    depends_on("lua", type=('build', 'run', 'link'))
    depends_on("lua@5.1:5.1.99", when="@0.1.0:0.9.0")
    depends_on("lua@5.1:5.2.99", when="@0.10.0:,master")
    depends_on("lua-luaposix")
    depends_on("munge")
    depends_on("libuuid")
    depends_on("python", type=('build', 'run'))
    depends_on("py-cffi", type=('build', 'run'))
    depends_on("jansson")
    depends_on("yaml-cpp")

    # versions up to 0.8.0 uses pylint to check Flux's python binding
    # later versions provide a configure flag and disable the check by default
    depends_on("py-pylint", when='@:0.8.0', type='build')

    depends_on("asciidoc", type='build', when="+docs")

    # Need autotools when building on master:
    depends_on("autoconf", type='build', when='@master')
    depends_on("automake", type='build', when='@master')
    depends_on("libtool", type='build', when='@master')

    def setup(self):
        pass

    @when('@master')
    def setup(self):
        # Check in case we are running `spack diy` from an "unshallow" clone
        if os.path.exists('.git/shallow'):
            # Allow git-describe to get last tag so flux-version works:
            git = which('git')
            git('fetch', '--unshallow')

    def autoreconf(self, spec, prefix):
        self.setup()
        if not os.path.exists('configure'):
            # Bootstrap with autotools
            bash = which('bash')
            bash('./autogen.sh')

    @property
    def lua_version(self):
        return self.spec['lua'].version.up_to(2)

    @property
    def lua_share_dir(self):
        return os.path.join('share', 'lua', str(self.lua_version))

    @property
    def lua_lib_dir(self):
        return os.path.join('lib', 'lua', str(self.lua_version))

    def setup_environment(self, spack_env, run_env):
        #  Ensure ./fluxometer.lua can be found during flux's make check
        spack_env.append_path('LUA_PATH', './?.lua', separator=';')

        run_env.prepend_path(
            'LUA_PATH',
            os.path.join(self.spec.prefix, self.lua_share_dir, '?.lua'),
            separator=';')
        run_env.prepend_path(
            'LUA_CPATH',
            os.path.join(self.spec.prefix, self.lua_lib_dir, '?.so'),
            separator=';')
        run_env.prepend_path(
            'PYTHONPATH',
            os.path.join(
                self.spec.prefix.lib,
                "python{0}".format(self.spec['python'].version.up_to(2)),
                "site-packages"),
        )
        run_env.prepend_path('FLUX_MODULE_PATH', self.prefix.lib.flux.modules)
        run_env.prepend_path('FLUX_EXEC_PATH', self.prefix.libexec.flux.cmd)
        run_env.prepend_path('FLUX_RC_PATH', self.prefix.etc.flux)

    def configure_args(self):
        args = ['--enable-pylint=no']
        if '+docs' not in self.spec:
            args.append('--disable-docs')
        return args