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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2019 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2021 Simon South <simon@simonsouth.net>
;;;
;;; 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 ragel)
#:use-module ((guix licenses) #:prefix license:)
#:use-module (guix packages)
#:use-module (guix download)
#:use-module (guix build-system gnu)
#:use-module (guix utils)
#:use-module (gnu packages)
#:use-module (gnu packages base))
(define-public ragel
(package
(name "ragel")
(version "6.10")
(source (origin
(method url-fetch)
(uri (string-append "https://www.colm.net/files/ragel/ragel-"
version ".tar.gz"))
(sha256
(base32
"0gvcsl62gh6sg73nwaxav4a5ja23zcnyxncdcdnqa2yjcpdnw5az"))))
(build-system gnu-build-system)
(arguments
(if (target-aarch64?)
'(#:phases
(modify-phases %standard-phases
(add-after 'unpack 'apply-char-signedness-fix
;; Apply a backported fix for aarch64-linux, where the C/C++
;; "char" type is unsigned by default.
;;
;; The patch is applied in this custom phase and not via the
;; "origin" object above to avoid rebuilding a large number of
;; packages on other platforms.
(lambda _
(let ((patch
(search-input-file %build-inputs "/bin/patch"))
(char-signedness-patch
(assoc-ref %build-inputs "char-signedness-patch")))
(invoke patch "-p1" "-i" char-signedness-patch))))))
'()))
(native-inputs
(if (target-aarch64?)
`(("char-signedness-patch"
,(search-patch "ragel-char-signedness.patch"))
("patch" ,patch))
'()))
(home-page "https://www.colm.net/open-source/ragel/")
(synopsis "State machine compiler")
(description
"Ragel compiles executable finite state machines from regular languages.
Ragel targets C, C++, Obj-C, C#, D, Java, Go and Ruby. Ragel state machines
can not only recognize byte sequences as regular expression machines do, but
can also execute code at arbitrary points in the recognition of a regular
language. Code embedding is done using inline operators that do not disrupt
the regular language syntax.")
;; GPLv2 (or later) with exception for generated code.
(license license:gpl2+)))
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