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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 Taylan Ulrich Bayırlı/Kammer <>
;;; 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
;;; 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 <>.
(use-modules (system base target)
(ice-9 match)
(ice-9 threads)
(guix build utils))
(define compile-options '(format unbound-variable arity-mismatch))
(define host (getenv "host"))
(define srcdir (getenv "srcdir"))
(define (relative-file file)
(if (string-prefix? (string-append srcdir "/") file)
(string-drop file (+ 1 (string-length srcdir)))
(define (file-mtime<? f1 f2)
(< (stat:mtime (stat f1))
(stat:mtime (stat f2))))
(define (scm->go file)
(let* ((relative (relative-file file))
(without-extension (string-drop-right relative 4)))
(string-append without-extension ".go")))
(define (file-needs-compilation? file)
(let ((go (scm->go file)))
(or (not (file-exists? go))
(file-mtime<? go file))))
(define (file->module file)
(let* ((relative (relative-file file))
(module-path (string-drop-right relative 4)))
(map string->symbol
(string-split module-path #\/))))
;;; To work around <> (FIXME), we want to load all
;;; files to be compiled first. We do this via resolve-interface so that the
;;; top-level of each file (module) is only executed once.
(define (load-module-file file)
(let ((module (file->module file)))
(format #t " LOAD ~a~%" module)
(resolve-interface module)))
(define (compile-file* file output-mutex)
(let ((go (scm->go file)))
(with-mutex output-mutex
(format #t " GUILEC ~a~%" go)
(mkdir-p (dirname go))
(with-target host
(lambda ()
(compile-file file
#:output-file go
#:opts compile-options)))))
(match (command-line)
((_ . files)
(let ((files (filter file-needs-compilation? files)))
(for-each load-module-file files)
(let ((mutex (make-mutex)))
(par-for-each (lambda (file)
(compile-file* file mutex))