62 lines
2.6 KiB
Scheme
62 lines
2.6 KiB
Scheme
;;; Guix --- Nix package management from Guile. -*- coding: utf-8 -*-
|
|
;;; Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
|
|
;;;
|
|
;;; This file is part of Guix.
|
|
;;;
|
|
;;; 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.
|
|
;;;
|
|
;;; 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 Guix. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
(define-module (distro packages flex)
|
|
#:use-module (guix licenses)
|
|
#:use-module (guix packages)
|
|
#:use-module (guix download)
|
|
#:use-module (guix build-system gnu)
|
|
#:use-module (distro)
|
|
#:use-module (distro packages m4)
|
|
#:use-module (distro packages bison))
|
|
|
|
(define-public flex
|
|
(package
|
|
(name "flex")
|
|
(version "2.5.37")
|
|
(source (origin
|
|
(method url-fetch)
|
|
(uri (string-append "mirror://sourceforge/flex/flex-"
|
|
version ".tar.bz2"))
|
|
(sha256
|
|
(base32
|
|
"0ah5mi4j62b85a9rllv1004mzjb5cd0mn4glvz13p88rpx77pahp"))))
|
|
(build-system gnu-build-system)
|
|
(arguments
|
|
'(#:patches (list (assoc-ref %build-inputs "patch/bison-tests"))))
|
|
(inputs `(("patch/bison-tests" ,(search-patch "flex-bison-tests.patch"))
|
|
("bison" ,bison)))
|
|
(propagated-inputs `(("m4" ,m4)))
|
|
(home-page "http://flex.sourceforge.net/")
|
|
(synopsis "A fast lexical analyser generator")
|
|
(description
|
|
"Flex is a tool for generating scanners. A scanner, sometimes
|
|
called a tokenizer, is a program which recognizes lexical patterns in
|
|
text. The flex program reads user-specified input files, or its standard
|
|
input if no file names are given, for a description of a scanner to
|
|
generate. The description is in the form of pairs of regular expressions
|
|
and C code, called rules. Flex generates a C source file named,
|
|
\"lex.yy.c\", which defines the function yylex(). The file \"lex.yy.c\"
|
|
can be compiled and linked to produce an executable. When the executable
|
|
is run, it analyzes its input for occurrences of text matching the
|
|
regular expressions for each rule. Whenever it finds a match, it
|
|
executes the corresponding C code.")
|
|
(license (bsd-style "file://COPYING"
|
|
"See COPYING in the distribution."))))
|
|
|