$NetBSD: patch-mozilla_config_external_moz.build,v 1.1 2018/12/16 08:29:48 ryoon Exp $

--- mozilla/config/external/moz.build.orig	2017-04-14 04:53:01.000000000 +0000
+++ mozilla/config/external/moz.build
@@ -21,12 +21,21 @@ if CONFIG['MOZ_UPDATER']:
 external_dirs += ['modules/brotli']
 external_dirs += ['modules/woff2']
 
-if CONFIG['MOZ_VORBIS']:
+if not CONFIG['MOZ_SYSTEM_OGG']:
+    external_dirs += ['media/libogg']
+
+if CONFIG['MOZ_VORBIS'] and not CONFIG['MOZ_SYSTEM_VORBIS']:
     external_dirs += ['media/libvorbis']
 
-if CONFIG['MOZ_TREMOR']:
+if CONFIG['MOZ_TREMOR'] and not CONFIG['MOZ_SYSTEM_TREMOR']:
     external_dirs += ['media/libtremor']
 
+if not CONFIG['MOZ_SYSTEM_THEORA']:
+    external_dirs += ['media/libtheora']
+
+if not CONFIG['MOZ_SYSTEM_SOUNDTOUCH']:
+    external_dirs += ['media/libsoundtouch']
+
 if CONFIG['MOZ_WEBM_ENCODER']:
     external_dirs += ['media/libmkv']
 
@@ -52,12 +61,9 @@ external_dirs += [
     'media/kiss_fft',
     'media/libcubeb',
     'media/libnestegg',
-    'media/libogg',
     'media/libopus',
-    'media/libtheora',
     'media/libspeex_resampler',
     'media/libstagefright',
-    'media/libsoundtouch',
     'media/psshparser'
 ]