--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mozilla-bmo1622013.patch	Mon Apr 20 14:12:08 2020 +0200
@@ -0,0 +1,28 @@
+From be45ba20c33a8a247115e79fd4c1f3295d652ba3 Mon Sep 17 00:00:00 2001
+From: Jan Beich <jbeich@FreeBSD.org>
+Date: Mon, 23 Mar 2020 08:20:22 +0000
+Subject: [PATCH] Bug 1622013 - Build *_mmx.c files with -mmmx in bundled libvpx.
+
+diff --git a/media/libvpx/moz.build b/media/libvpx/moz.build
+index f3845941fe4de..47853d43408b7 100644
+--- a/media/libvpx/moz.build
++++ b/media/libvpx/moz.build
+@@ -97,16 +97,18 @@ if CONFIG['OS_TARGET'] == 'Android':
+     DEFINES['__linux__'] = True
+ 
+     SOURCES += [
+         '%%%s/sources/android/cpufeatures/cpu-features.c' % CONFIG['ANDROID_NDK'],
+     ]
+ 
+ for f in SOURCES:
+     if f.endswith('.c'):
++        if 'mmx.c' in f:
++            SOURCES[f].flags += ['-mmmx']
+         if 'sse2.c' in f:
+             SOURCES[f].flags += CONFIG['SSE2_FLAGS']
+         if 'ssse3.c' in f:
+             SOURCES[f].flags += ['-mssse3']
+         if 'sse4.c' in f:
+             SOURCES[f].flags += ['-msse4.1']
+         if 'avx.c' in f:
+             SOURCES[f].flags += ['-mavx']