[bug#36477] [PATCH 20/31] gnu: libsamplerate: Fix aarch64 cross-compilation.

[Mathieu Othacehe <m.othacehe@gmail.com>]

The packaged config.sub and config.guess do not have aarch64 support. Replace
them by the ones from automake.

* gnu/packages/pulseaudio.scm (libsamplerate)[arguments]: Replace outdated config.sub and
config.guess, taken from ...
[native-inputs]: ... here, by adding automake.
---
 gnu/packages/pulseaudio.scm | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/pulseaudio.scm b/gnu/packages/pulseaudio.scm
index 96d15bdf9c..7c91ec201a 100644
--- a/gnu/packages/pulseaudio.scm
+++ b/gnu/packages/pulseaudio.scm
@@ -8,6 +8,7 @@
 ;;; Copyright © 2017 Stefan Reichör <stefan@xsteve.at>
 ;;; Copyright © 2017 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018 Pierre Langlois <pierre.langlois@gmx.com>
+;;; Copyright © 2019 Mathieu Othacehe <m.othacehe@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -27,6 +28,7 @@
 (define-module (gnu packages pulseaudio)
   #:use-module (guix packages)
   #:use-module (guix download)
+  #:use-module (guix utils)
   #:use-module ((guix licenses) #:prefix l:)
   #:use-module (guix build-system gnu)
   #:use-module (guix build-system python)
@@ -96,10 +98,28 @@ for reading and writing new sound file formats.")
                "1ha46i0nbibq0pl0pjwcqiyny4hj8lp1bnl4dpxm64zjw9lb2zha"))))
     (build-system gnu-build-system)
     (native-inputs
-     `(("pkg-config" ,pkg-config)))
+     `(("pkg-config" ,pkg-config)
+       ("automake" ,automake))) ;For up to date 'config.guess' and 'config.sub'.
     (propagated-inputs
      `(("libsndfile" ,libsndfile)
        ("fftw" ,fftw)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'fix-configure
+           (lambda* (#:key inputs native-inputs #:allow-other-keys)
+             ;; Replace outdated config.sub and config.guess:
+             (with-directory-excursion "Cfg"
+               (for-each (lambda (file)
+                           (install-file (string-append
+                                          (assoc-ref
+                                           (or native-inputs inputs) "automake")
+                                          "/share/automake-"
+                                          ,(version-major+minor
+                                            (package-version automake))
+                                          "/" file) "."))
+                         '("config.sub" "config.guess")))
+             #t)))))
     (home-page "http://www.mega-nerd.com/SRC/index.html")
     (synopsis "Audio sample rate conversion library")
     (description
-- 
2.17.1