# Copyright 2013-2024 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.package import *


class Byacc(AutotoolsPackage):
    """Berkeley Yacc is an LALR(1) parser generator.  Berkeley Yacc has
    been made as compatible as possible with AT&T Yacc.  Berkeley Yacc
    can accept any input specification that conforms to the AT&T Yacc
    documentation. Specifications that take advantage of undocumented
    features of AT&T Yacc will probably be rejected."""

    homepage = "https://invisible-island.net/byacc/byacc.html"
    url = "ftp://ftp.invisible-island.net/pub/byacc/byacc-20210808.tgz"

    license("Public-Domain")

    # Check FTP directory ftp://ftp.invisible-island.net/byacc/ to find the latest version
    version("20210808", sha256="f158529be9d0594263c7f11a87616a49ea23e55ac63691252a2304fbbc7d3a83")

    provides("yacc")

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