bug#32360: gst-plugins-base has test failures (when built as a dependency)

[Leo Famulari <leo@famulari.name>]

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Here is a patch that excludes Opus when building gst-plugins-base on and
for 32-bit systems. I think it's not so bad to be missing support for
Opus in this context until the underlying bug is fixed.

With this patch, gst-plugins-base builds successfully with
'--system=i686-linux'. I didn't test the full Wine build.

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From e1cc6137514c1e002b82ec48c3a5e260937ceeb1 Mon Sep 17 00:00:00 2001
From: Leo Famulari <leo@famulari.name>
Date: Fri, 17 Aug 2018 13:43:04 -0400
Subject: [PATCH] gnu: gst-plugins-base: Don't build with Opus for 32-bit
 systems.

Fixes <https://bugs.gnu.org/32360> and <https://bugs.gnu.org/32466>.

* gnu/packages/gstreamer.scm (gst-plugins-base)[inputs]: Exclude opus
when building for 32-bit systems.
---
 gnu/packages/gstreamer.scm | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/gnu/packages/gstreamer.scm b/gnu/packages/gstreamer.scm
index 951ca93fb..4477d2f86 100644
--- a/gnu/packages/gstreamer.scm
+++ b/gnu/packages/gstreamer.scm
@@ -4,7 +4,7 @@
 ;;; Copyright © 2015, 2016 Sou Bunnbu <iyzsong@gmail.com>
 ;;; Copyright © 2015, 2018 Mark H Weaver <mhw@netris.org>
 ;;; Copyright © 2016, 2017 Efraim Flashner <efraim@flashner.co.il>
-;;; Copyright © 2016 Leo Famulari <leo@famulari.name>
+;;; Copyright © 2016, 2018 Leo Famulari <leo@famulari.name>
 ;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
 ;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;;
@@ -167,7 +167,6 @@ This package provides the core library and elements.")
        ("orc" ,orc)))              ;required by gstreamer-audio-1.0.pc
     (inputs
      `(("cdparanoia" ,cdparanoia)
-       ("opus" ,opus)
        ("pango" ,pango)
        ("libogg" ,libogg)
        ("libtheora" ,libtheora)
@@ -176,7 +175,12 @@ This package provides the core library and elements.")
        ("zlib" ,zlib)
        ("libXext" ,libxext)
        ("libxv" ,libxv)
-       ("alsa-lib" ,alsa-lib)))
+       ("alsa-lib" ,alsa-lib)
+       ;; XXX Don't build with opus on 32-bit systems:
+       ;; <https://bugs.gnu.org/32360>
+       ,@(if (target-64bit?)
+           `(("opus" ,opus))
+           '())))
     (native-inputs
       `(("pkg-config" ,pkg-config)
         ("glib:bin" ,glib "bin")
-- 
2.18.0


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