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# 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 Libcerf(AutotoolsPackage):
    """A self-contained C library providing complex error functions, based
       on Faddeeva's plasma dispersion function w(z). Also provides Dawson's
       integral and Voigt's convolution of a Gaussian and a Lorentzian

    """
    homepage = "http://sourceforge.net/projects/libcerf"
    url      = "http://downloads.sourceforge.net/project/libcerf/libcerf-1.3.tgz"

    version('1.3', sha256='d7059e923d3f370c89fb4d19ed4f827d381bc3f0e36da5595a04aeaaf3e6a859')

    def configure_args(self):
        spec = self.spec
        options = []
        # Clang reports unused functions as errors, see
        # http://clang.debian.net/status.php?version=3.8.1&key=UNUSED_FUNCTION
        if spec.satisfies('%clang'):
            options.append('CFLAGS=-Wno-unused-function')
        # fujitsu compiler has a error about unused functions too.
        if spec.satisfies('%fj'):
            options.append('CFLAGS=-Wno-unused-function')

        return options