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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 Taylan Ulrich Bayırlı/Kammer <taylanbayirli@gmail.com>
;;; Copyright © 2016, 2017, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;;
;;; 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/>.
(use-modules (ice-9 format)
(ice-9 match)
(ice-9 threads)
(srfi srfi-1)
(guix build compile)
(guix build utils))
(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)))
file))
(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* (parallel-job-count #:optional (flags (getenv "MAKEFLAGS")))
"Return the number of parallel jobs as determined by FLAGS, the flags passed
to 'make'."
(match flags
(#f (current-processor-count))
(flags
(let ((initial-flags (string-tokenize flags)))
(let loop ((flags initial-flags))
(match flags
(()
;; Note: GNU make prior to version 4.2 would hide "-j" flags from
;; $MAKEFLAGS. Thus, check for a "--jobserver" flag here and
;; assume we're using all cores if specified.
(if (any (lambda (flag)
(string-prefix? "--jobserver" flag))
initial-flags)
(current-processor-count) ;GNU make < 4.2
1)) ;sequential make
(("-j" (= string->number count) _ ...)
(if (integer? count)
count
(current-processor-count)))
((head tail ...)
(if (string-prefix? "-j" head)
(match (string-drop head 2)
(""
(current-processor-count))
((= string->number count)
(if (integer? count)
count
(current-processor-count))))
(loop tail)))))))))
(define (parallel-job-count*)
;; XXX: Work around memory requirements not sustainable on i686 above '-j4'
;; or so: <https://bugs.gnu.org/40522>.
(let ((count (parallel-job-count)))
(if (string-prefix? "i686" %host-type)
(min count 4)
count)))
(define (% completed total)
"Return the completion percentage of COMPLETED over TOTAL as an integer."
(inexact->exact (round (* 100. (/ completed total)))))
;; Install a SIGINT handler to give unwind handlers in 'compile-file' an
;; opportunity to run upon SIGINT and to remove temporary output files.
(sigaction SIGINT
(lambda args
(exit 1)))
(match (command-line)
((_ . files)
(catch #t
(lambda ()
(compile-files srcdir (getcwd)
(filter file-needs-compilation? files)
#:workers (parallel-job-count*)
#:host host
#:report-load (lambda (file total completed)
(when file
(format #t "[~3d%] LOAD ~a~%"
(% (+ 1 completed) (* 2 total))
file)
(force-output)))
#:report-compilation (lambda (file total completed)
(when file
(format #t "[~3d%] GUILEC ~a~%"
(% (+ total completed 1)
(* 2 total))
(scm->go file))
(force-output)))))
(lambda _
(primitive-exit 1))
(lambda args
;; Try to report the error in an intelligible way.
(let* ((stack (make-stack #t))
(frame (if (> (stack-length stack) 1)
(stack-ref stack 1) ;skip the 'throw' frame
(stack-ref stack 0)))
(ui (false-if-exception
(resolve-module '(guix ui))))
(report (and ui
(false-if-exception
(module-ref ui 'report-load-error)))))
(if report
;; In Guile <= 2.2.5, 'current-load-port' was not exported.
(let ((load-port ((module-ref (resolve-module '(ice-9 ports))
'current-load-port))))
(report (or (and=> load-port port-filename) "?.scm")
args frame))
(begin
(print-exception (current-error-port) frame
(car args) (cdr args))
(display-backtrace stack (current-error-port)))))))))
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