;;; guile-sdl2 --- FFI bindings for SDL2
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;;
;;; This file is part of guile-sdl2.
;;;
;;; Guile-sdl2 is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU Lesser General Public License as
;;; published by the Free Software Foundation; either version 3 of the
;;; License, or (at your option) any later version.
;;;
;;; Guile-sdl2 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 Lesser General Public
;;; License along with guile-sdl2.  If not, see
;;; <http://www.gnu.org/licenses/>.

;;; Commentary:
;;
;; GNU Guix development package.  To build and install, run:
;;
;;   guix package -f guix.scm
;;
;; To use as the basis for a development environment, run:
;;
;;   guix environment -l guix.scm
;;
;;; Code:

(use-modules (ice-9 match)
             (ice-9 popen)
             (ice-9 rdelim)
             (srfi srfi-1)
             (srfi srfi-26)
             (guix gexp)
             (guix packages)
             (guix licenses)
             (guix git-download)
             (guix build-system gnu)
             ((guix build utils) #:select (with-directory-excursion))
             (gnu packages)
             (gnu packages autotools)
             (gnu packages guile)
             (gnu packages pkg-config)
             (gnu packages sdl)
             (gnu packages texinfo))

(define %source-dir (dirname (current-filename)))

(define git-file?
  (let* ((pipe (with-directory-excursion %source-dir
                 (open-pipe* OPEN_READ "git" "ls-files")))
         (files (let loop ((lines '()))
                  (match (read-line pipe)
                    ((? eof-object?)
                     (reverse lines))
                    (line
                     (loop (cons line lines))))))
         (status (close-pipe pipe)))
    (lambda (file stat)
      (match (stat:type stat)
        ('directory #t)
        ((or 'regular 'symlink)
         (any (cut string-suffix? <> file) files))
        (_ #f)))))

(package
  (name "guile-sdl2")
  (version "0.1.2")
  (source (local-file %source-dir  #:recursive? #t #:select? git-file?))
  (build-system gnu-build-system)
  (arguments
   '(#:configure-flags
     (list (string-append "--with-libsdl2-prefix="
                          (assoc-ref %build-inputs "sdl2"))
           (string-append "--with-libsdl2-image-prefix="
                          (assoc-ref %build-inputs "sdl2-image"))
           (string-append "--with-libsdl2-ttf-prefix="
                          (assoc-ref %build-inputs "sdl2-ttf"))
           (string-append "--with-libsdl2-mixer-prefix="
                          (assoc-ref %build-inputs "sdl2-mixer")))
     #:make-flags '("GUILE_AUTO_COMPILE=0")
     #:phases
     (modify-phases %standard-phases
       (add-after 'unpack 'bootstrap
         (lambda _ (zero? (system* "sh" "bootstrap")))))))
  (native-inputs
   `(("autoconf" ,autoconf)
     ("automake" ,automake)
     ("pkg-config" ,pkg-config)
     ("texinfo" ,texinfo)))
  (inputs
   `(("guile" ,guile-2.2)
     ("sdl2" ,sdl2)
     ("sdl2-image" ,sdl2-image)
     ("sdl2-mixer" ,sdl2-mixer)
     ("sdl2-ttf" ,sdl2-ttf)))
  (synopsis "Guile bindings for SDL2")
  (description "Guile-sdl2 provides pure Guile Scheme bindings to the
SDL2 C shared library via the foreign function interface.")
  (home-page "https://git.dthompson.us/guile-sdl2.git")
  (license lgpl3+))