| 1 | ;;; GNU Guix --- Functional package management for GNU |
| 2 | ;;; Copyright © 2012 Ludovic Courtès <ludo@gnu.org> |
| 3 | ;;; |
| 4 | ;;; This file is part of GNU Guix. |
| 5 | ;;; |
| 6 | ;;; GNU Guix is free software; you can redistribute it and/or modify it |
| 7 | ;;; under the terms of the GNU General Public License as published by |
| 8 | ;;; the Free Software Foundation; either version 3 of the License, or (at |
| 9 | ;;; your option) any later version. |
| 10 | ;;; |
| 11 | ;;; GNU Guix is distributed in the hope that it will be useful, but |
| 12 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | ;;; GNU General Public License for more details. |
| 15 | ;;; |
| 16 | ;;; You should have received a copy of the GNU General Public License |
| 17 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. |
| 18 | |
| 19 | (define-module (gnu packages flex) |
| 20 | #:use-module (guix licenses) |
| 21 | #:use-module (guix packages) |
| 22 | #:use-module (guix download) |
| 23 | #:use-module (guix build-system gnu) |
| 24 | #:use-module (gnu packages) |
| 25 | #:use-module (gnu packages m4) |
| 26 | #:use-module (gnu packages bison) |
| 27 | #:use-module (gnu packages indent)) |
| 28 | |
| 29 | (define-public flex |
| 30 | (package |
| 31 | (name "flex") |
| 32 | (version "2.5.37") |
| 33 | (source (origin |
| 34 | (method url-fetch) |
| 35 | (uri (string-append "mirror://sourceforge/flex/flex-" |
| 36 | version ".tar.bz2")) |
| 37 | (sha256 |
| 38 | (base32 |
| 39 | "0ah5mi4j62b85a9rllv1004mzjb5cd0mn4glvz13p88rpx77pahp")))) |
| 40 | (build-system gnu-build-system) |
| 41 | (arguments |
| 42 | '(#:patches (list (assoc-ref %build-inputs "patch/bison-tests")))) |
| 43 | (inputs `(("patch/bison-tests" ,(search-patch "flex-bison-tests.patch")) |
| 44 | ("bison" ,bison) |
| 45 | ("indent" ,indent))) |
| 46 | (propagated-inputs `(("m4" ,m4))) |
| 47 | (home-page "http://flex.sourceforge.net/") |
| 48 | (synopsis "A fast lexical analyser generator") |
| 49 | (description |
| 50 | "Flex is a tool for generating scanners. A scanner, sometimes |
| 51 | called a tokenizer, is a program which recognizes lexical patterns in |
| 52 | text. The flex program reads user-specified input files, or its standard |
| 53 | input if no file names are given, for a description of a scanner to |
| 54 | generate. The description is in the form of pairs of regular expressions |
| 55 | and C code, called rules. Flex generates a C source file named, |
| 56 | \"lex.yy.c\", which defines the function yylex(). The file \"lex.yy.c\" |
| 57 | can be compiled and linked to produce an executable. When the executable |
| 58 | is run, it analyzes its input for occurrences of text matching the |
| 59 | regular expressions for each rule. Whenever it finds a match, it |
| 60 | executes the corresponding C code.") |
| 61 | (license (bsd-style "file://COPYING" |
| 62 | "See COPYING in the distribution.")))) |
| 63 | |