# Copyright 2013-2021 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 Cln(AutotoolsPackage):
    """CLN is a library for efficient computations with all kinds of numbers
    in arbitrary precision. It features number classes for unlimited length
    integers, rationals, arbitrary precision floating point numbers and much
    more."""

    homepage = "https://www.ginac.de/CLN/"
    url      = "https://www.ginac.de/CLN/cln-1.3.6.tar.bz2"
    git      = "git://www.ginac.de/cln.git"

    version('master', branch='master')
    version('1.3.6', commit='d4ba1cc869be2c647c4ab48ac571b1fc9c2021a9')
    version('1.3.5', commit='b221c033c082b462455502b7e63702a9c466aede')
    version('1.3.4', commit='9b86a7fc69feb1b288469982001af565f73057eb')
    version('1.3.3', commit='1c9bd61ff0b89b0bf8030e44cb398e8f75112222')
    version('1.3.2', commit='00817f7b60a961b860f6d305ac82dd51b70d6ba6')
    version('1.3.1', commit='196fee3778494b69063f2a1b018e70de351b336f')
    version('1.3.0', commit='8e19c1a9d9ea4116112490d6f43904258b928649')
    version('1.2.2', commit='cd3ea9b9889856c6b54266fdb13b54dd3c53931a')
    version('1.2.1', commit='567378ab4cbfd443c3d82d810599860c769251fe')
    version('1.2.0', commit='679a0a8927f011fb32411f8a31070c77a9901094')

    variant('gmp',   default=True, description='Enable GMP multiprecision library')

    depends_on('autoconf', type='build')
    depends_on('automake', type='build')
    depends_on('libtool',  type='build')
    depends_on('m4',       type='build')
    depends_on('gmp@4.1:', when='+gmp')

    # Dependencies required to define macro AC_LIB_LINKFLAGS_FROM_LIBS
    depends_on('gettext',  type='build')

    def autoreconf(self, spec, prefix):
        autoreconf_args = ['-i']

        aclocal_pkg_list = ['gettext']
        aclocal_path = os.path.join('share', 'aclocal')

        for pkg in aclocal_pkg_list:
            autoreconf_args += ['-I',
                                os.path.join(spec[pkg].prefix, aclocal_path)]

        autoreconf = which('autoreconf')
        autoreconf(*autoreconf_args)

    @run_before('autoreconf')
    def force_config_rpath(self):
        source_directory = self.stage.source_path
        build_aux_directory = os.path.join(source_directory, 'build-aux')

        mkdir = which('mkdir')
        mkdir(build_aux_directory)

        touch = which('touch')
        touch(os.path.join(build_aux_directory, 'config.rpath'))

    def configure_args(self):
        spec = self.spec

        configure_args = []

        if '+gmp' in spec:
            configure_args.append(
                '--with-gmp={0}'.format(spec['gmp'].prefix)
            )
        else:
            configure_args.append(
                '--without-gmp'
            )

        return configure_args