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blob 4aa4ac9b9741affac59acc0d9f27ff2fbf8ca88f 3290 bytes (raw)
name: build-aux/compile-all.scm 	 # note: path name is non-authoritative(*)

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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 Taylan Ulrich Bayırlı/Kammer <taylanbayirli@gmail.com>
;;; Copyright © 2016, 2017 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 match)
             (ice-9 threads)
             (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 loop ((flags (string-tokenize flags)))
       (match flags
         (()
          1)
         (("-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))))))))

;; 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)
   (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 "  LOAD     ~a~%" file)))
                  #:report-compilation (lambda (file total completed)
                                         (when file
                                           (format #t "  GUILEC   ~a~%"
                                                   (scm->go file)))))))

debug log:

solving 4aa4ac9b9 ...
found 4aa4ac9b9 in https://yhetil.org/guix/20171020160557.27096-3-ludo@gnu.org/
found 2fc3102da in https://git.savannah.gnu.org/cgit/guix.git
preparing index
index prepared:
100644 2fc3102daacc561992007332adaff10a23667471	build-aux/compile-all.scm

applying [1/1] https://yhetil.org/guix/20171020160557.27096-3-ludo@gnu.org/
diff --git a/build-aux/compile-all.scm b/build-aux/compile-all.scm
index 2fc3102da..4aa4ac9b9 100644

Checking patch build-aux/compile-all.scm...
Applied patch build-aux/compile-all.scm cleanly.

index at:
100644 4aa4ac9b9741affac59acc0d9f27ff2fbf8ca88f	build-aux/compile-all.scm

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    Blobs themselves have no identifier aside from the hash of its contents.^

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