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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu packages bison)
#:use-module (guix licenses)
#:use-module (guix packages)
#:use-module (guix download)
#:use-module (guix build-system gnu)
#:use-module (gnu packages m4)
#:use-module (gnu packages perl)
#:use-module (gnu packages flex)
#:use-module (srfi srfi-1)
#:export (bison))
(define bison
(package
(name "bison")
(version "3.0")
(source
(origin
(method url-fetch)
(uri (string-append "mirror://gnu/bison/bison-"
version ".tar.xz"))
(sha256
(base32
"1j14fqgi9wzqgsy4fhkcdrv4hv6rrvhvn84axs520w9b022mbb79"))))
(build-system gnu-build-system)
(native-inputs `(("perl" ,perl)
;; We need Flex for the test suite, and Flex needs Bison.
;; To break the cycle, we remove Bison from the inputs of
;; Flex, and disable Flex's test suite, since it requires
;; Bison.
("flex" ,(package (inherit flex)
(arguments '(#:tests? #f))
(inputs
(alist-delete "bison"
(package-inputs flex)))))))
(propagated-inputs `(("m4" ,m4)))
(home-page "http://www.gnu.org/software/bison/")
(synopsis "Parser generator")
(description
"Bison is a general-purpose parser generator that converts an
annotated context-free grammar into an LALR(1) or GLR parser for
that grammar. Once you are proficient with Bison, you can use
it to develop a wide range of language parsers, from those used
in simple desk calculators to complex programming languages.
Bison is upward compatible with Yacc: all properly-written Yacc
grammars ought to work with Bison with no change. Anyone
familiar with Yacc should be able to use Bison with little
trouble. You need to be fluent in C or C++ programming in order
to use Bison.")
(license gpl3+)))
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