# 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 Gmp(AutotoolsPackage):
    """GMP is a free library for arbitrary precision arithmetic, operating
    on signed integers, rational numbers, and floating-point numbers."""

    homepage = "https://gmplib.org"
    url      = "https://ftpmirror.gnu.org/gmp/gmp-6.1.2.tar.bz2"

    version('6.1.2',  sha256='5275bb04f4863a13516b2f39392ac5e272f5e1bb8057b18aec1c9b79d73d8fb2')
    version('6.1.1',  sha256='a8109865f2893f1373b0a8ed5ff7429de8db696fc451b1036bd7bdf95bbeffd6')
    version('6.1.0',  sha256='498449a994efeba527885c10405993427995d3f86b8768d8cdf8d9dd7c6b73e8')
    version('6.0.0a', sha256='7f8e9a804b9c6d07164cf754207be838ece1219425d64e28cfa3e70d5c759aaf')
    version('5.1.3', sha256='752079520b4690531171d0f4532e40f08600215feefede70b24fabdc6f1ab160')
    # Old version needed for a binary package in ghc-bootstrap
    version('4.3.2',  sha256='936162c0312886c21581002b79932829aa048cfaf9937c6265aeaa14f1cd1775')

    depends_on('autoconf', type='build')
    depends_on('automake', type='build')
    depends_on('libtool', type='build')
    depends_on('m4', type='build')

    # gmp's configure script seems to be broken; it sometimes misdetects
    # shared library support. Regenerating it fixes the issue.
    force_autoreconf = True

    def flag_handler(self, name, flags):
        # Work around macOS Catalina / Xcode 11 code generation bug
        # (test failure t-toom53, due to wrong code in mpn/toom53_mul.o)
        if self.spec.satisfies('os=catalina') and name == 'cflags':
            flags.append('-fno-stack-check')
        # This flag is necessary for the Intel build to pass `make check`
        elif self.spec.satisfies('%intel') and name == 'cxxflags':
            flags.append('-no-ftz')
        return (flags, None, None)

    def configure_args(self):
        return ['--enable-cxx']
