# 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 Pal(AutotoolsPackage):
    """The PAL library is a partial re-implementation of Pat Wallace's
    popular SLALIB library written in C using a Gnu GPL license
    and layered on top of the IAU's SOFA library (or the BSD-licensed ERFA)
    where appropriate."""

    homepage = "https://github.com/Starlink/pal"
    url      = "https://github.com/Starlink/pal/releases/download/v0.9.8/pal-0.9.8.tar.gz"

    version('0.9.8', sha256='191fde8c4f45d6807d4b011511344014966bb46e44029a4481d070cd5e7cc697')

    depends_on('sofa-c')
    depends_on('erfa')

    variant('starlink', default=False, description='Build with starlink support.')

    def configure_args(self):
        args = []
        if '~starlink' in self.spec:
            args.append('--without-starlink')
        return args
