# 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)

#
# Author: Gilbert Brietzke
# Date: June 18, 2019

from spack import *


class Fgsl(AutotoolsPackage):
    """Fortran interface to the GNU Scientific Library"""

    homepage = "https://github.com/reinh-bader/fgsl"
    url      = "https://github.com/reinh-bader/fgsl/archive/v1.2.0.tar.gz"

    version('1.3.0', sha256='6d73d558c889d7ea23e510a436f28618624035e8ffa07692894f10968aa83a4b')
    version('1.2.0', sha256='e5a4ac08eb744c963e95a46a51d76c56593836077c5ad8c47e240cae57027002')
    version('1.1.0', sha256='a5adce3c3b279d2dacc05b74c598ff89be7ef3ae3ec59b3ec1355750c1bb4832')

    depends_on('autoconf', type='build')
    depends_on('automake', type='build')
    depends_on('libtool', type='build')
    depends_on('m4', type='build')
    depends_on('gsl@2.4', when='@1.3.0')
    depends_on('gsl@2.3', when='@1.2.0')
    depends_on('gsl@2.2.1', when='@1.1.0')

    parallel = False

    @run_before('autoreconf')
    def create_m4_dir(self):
        mkdir('m4')

    def setup_environment(self, spack_env, run_env):
        if self.compiler.name == 'gcc':
            spack_env.append_flags('FCFLAGS', "-ffree-line-length-none")
