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Diffstat (limited to 'distro/packages/flex.scm')
| -rw-r--r-- | distro/packages/flex.scm | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/distro/packages/flex.scm b/distro/packages/flex.scm new file mode 100644 index 0000000000..aa4dd00ef5 --- /dev/null +++ b/distro/packages/flex.scm @@ -0,0 +1,58 @@ +;;; 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 bison) + #: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"))) |