# Allow building against system-wide ogg/vorbis/opus.

diff --git config/Makefile.in config/Makefile.in
index 5383399..4393ae8 100644
--- config/Makefile.in
+++ config/Makefile.in
@@ -79,6 +79,9 @@ export:: $(export-preqs)
 		-DMOZ_NATIVE_ICU=$(MOZ_NATIVE_ICU) \
 		-DMOZ_NATIVE_GRAPHITE2=$(MOZ_NATIVE_GRAPHITE2) \
 		-DMOZ_NATIVE_HARFBUZZ=$(MOZ_NATIVE_HARFBUZZ) \
+		-DMOZ_NATIVE_OGG=$(MOZ_NATIVE_OGG) \
+		-DMOZ_NATIVE_VORBIS=$(MOZ_NATIVE_VORBIS) \
+		-DMOZ_NATIVE_OPUS=$(MOZ_NATIVE_OPUS) \
 		$(srcdir)/system-headers | $(PERL) $(topsrcdir)/nsprpub/config/make-system-wrappers.pl system_wrappers
 	$(INSTALL) system_wrappers $(DIST)
 
diff --git config/external/moz.build config/external/moz.build
index c22a36c..740402e 100644
--- config/external/moz.build
+++ config/external/moz.build
@@ -15,13 +15,13 @@ if CONFIG['MOZ_UPDATER']:
     if not CONFIG['MOZ_NATIVE_BZ2']:
         external_dirs += ['modules/libbz2']
 
-if CONFIG['MOZ_VORBIS']:
+if CONFIG['MOZ_VORBIS'] and not CONFIG['MOZ_NATIVE_VORBIS']:
     external_dirs += ['media/libvorbis']
 
 if CONFIG['MOZ_TREMOR']:
     external_dirs += ['media/libtremor']
 
-if CONFIG['MOZ_OPUS']:
+if CONFIG['MOZ_OPUS'] and not CONFIG['MOZ_NATIVE_OPUS']:
     external_dirs += ['media/libopus']
 
 if CONFIG['MOZ_WEBM']:
@@ -34,7 +34,9 @@ if CONFIG['MOZ_VPX'] and not CONFIG['MOZ_NATIVE_LIBVPX']:
     external_dirs += ['media/libvpx']
 
 if CONFIG['MOZ_OGG']:
-    external_dirs += ['media/libogg', 'media/libtheora']
+    if not CONFIG['MOZ_NATIVE_OGG']:
+        external_dirs += ['media/libogg']
+    external_dirs += ['media/libtheora']
 
 if not CONFIG['MOZ_NATIVE_PNG']:
     external_dirs += ['media/libpng']
diff --git config/system-headers config/system-headers
index b711fc3..fd3c14f 100644
--- config/system-headers
+++ config/system-headers
@@ -1153,3 +1153,17 @@ graphite2/Segment.h
 harfbuzz/hb-ot.h
 harfbuzz/hb.h
 #endif
+#if MOZ_NATIVE_OGG==1
+ogg/ogg.h
+ogg/os_types.h
+#endif
+#if MOZ_NATIVE_VORBIS==1
+vorbis/codec.h
+vorbis/vorbisenc.h
+#endif
+#if MOZ_NATIVE_OPUS==1
+opus.h
+opus_multistream.h
+opus/opus.h
+opus/opus_multistream.h
+#endif
diff --git configure.in configure.in
index df49287..05e97ff 100644
--- configure.in
+++ configure.in
@@ -5130,6 +5130,40 @@ if test "${ac_cv_c_attribute_aligned}" != "0"; then
 fi
 
 dnl ========================================================
+dnl Check for libogg
+dnl ========================================================
+
+MOZ_ARG_WITH_BOOL(system-ogg,
+[  --with-system-ogg       Use system libogg (located with pkgconfig)],
+MOZ_NATIVE_OGG=1,
+MOZ_NATIVE_OGG= )
+
+if test -n "$MOZ_NATIVE_OGG"; then
+    PKG_CHECK_MODULES(MOZ_OGG, ogg >= 1.2.1)
+fi
+
+AC_SUBST(MOZ_NATIVE_OGG)
+AC_SUBST(MOZ_OGG_CFLAGS)
+AC_SUBST(MOZ_OGG_LIBS)
+
+dnl ========================================================
+dnl Check for libvorbis
+dnl ========================================================
+
+MOZ_ARG_WITH_BOOL(system-vorbis,
+[  --with-system-vorbis    Use system libvorbis (located with pkgconfig)],
+MOZ_NATIVE_VORBIS=1,
+MOZ_NATIVE_VORBIS= )
+
+if test -n "$MOZ_NATIVE_VORBIS"; then
+    PKG_CHECK_MODULES(MOZ_VORBIS, vorbis vorbisenc >= 1.3.4)
+fi
+
+AC_SUBST(MOZ_NATIVE_VORBIS)
+AC_SUBST(MOZ_VORBIS_CFLAGS)
+AC_SUBST(MOZ_VORBIS_LIBS)
+
+dnl ========================================================
 dnl = Disable Opus audio codec support
 dnl ========================================================
 MOZ_ARG_DISABLE_BOOL(opus,
@@ -5138,6 +5172,25 @@ MOZ_ARG_DISABLE_BOOL(opus,
     MOZ_OPUS=1)
 
 dnl ========================================================
+dnl Check for libopus
+dnl ========================================================
+
+MOZ_ARG_WITH_BOOL(system-opus,
+[  --with-system-opus      Use system libopus (located with pkgconfig)],
+MOZ_NATIVE_OPUS=1,
+MOZ_NATIVE_OPUS= )
+
+if test -n "$MOZ_NATIVE_OPUS"; then
+    PKG_CHECK_MODULES(MOZ_OPUS, opus >= 1.1)
+else
+    MOZ_OPUS_CFLAGS='-I$(topsrcdir)/media/libopus/include'
+fi
+
+AC_SUBST(MOZ_NATIVE_OPUS)
+AC_SUBST(MOZ_OPUS_CFLAGS)
+AC_SUBST(MOZ_OPUS_LIBS)
+
+dnl ========================================================
 dnl = Disable VP8 decoder support
 dnl ========================================================
 MOZ_ARG_DISABLE_BOOL(webm,
diff --git content/media/Makefile.in content/media/Makefile.in
index 68f360e..76f2d57 100644
--- content/media/Makefile.in
+++ content/media/Makefile.in
@@ -7,4 +7,16 @@ include $(topsrcdir)/config/rules.mk
 CFLAGS   += $(GSTREAMER_CFLAGS)
 CXXFLAGS += $(GSTREAMER_CFLAGS)
 
+ifdef MOZ_NATIVE_OGG
+CXXFLAGS += $(MOZ_OGG_CFLAGS)
+endif
+
+ifdef MOZ_NATIVE_VORBIS
+CXXFLAGS += $(MOZ_VORBIS_CFLAGS)
+endif
+
+ifdef MOZ_NATIVE_OPUS
+CXXFLAGS += $(MOZ_OPUS_CFLAGS)
+endif
+
 AudioNodeEngineNEON.$(OBJ_SUFFIX): CXXFLAGS += -mfpu=neon
diff --git media/libtheora/Makefile.in media/libtheora/Makefile.in
new file mode 100644
index 0000000..1f02dc0
--- /dev/null
+++ media/libtheora/Makefile.in
@@ -0,0 +1,9 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+include $(topsrcdir)/config/rules.mk
+
+ifdef MOZ_NATIVE_OGG
+CFLAGS += $(MOZ_OGG_CFLAGS)
+endif
diff --git media/libtremor/Makefile.in media/libtremor/Makefile.in
new file mode 100644
index 0000000..1f02dc0
--- /dev/null
+++ media/libtremor/Makefile.in
@@ -0,0 +1,9 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+include $(topsrcdir)/config/rules.mk
+
+ifdef MOZ_NATIVE_OGG
+CFLAGS += $(MOZ_OGG_CFLAGS)
+endif
diff --git media/libvorbis/Makefile.in media/libvorbis/Makefile.in
new file mode 100644
index 0000000..1f02dc0
--- /dev/null
+++ media/libvorbis/Makefile.in
@@ -0,0 +1,9 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+include $(topsrcdir)/config/rules.mk
+
+ifdef MOZ_NATIVE_OGG
+CFLAGS += $(MOZ_OGG_CFLAGS)
+endif
diff --git media/webrtc/signaling/test/Makefile.in media/webrtc/signaling/test/Makefile.in
index c5e82c4..91ef86a 100644
--- media/webrtc/signaling/test/Makefile.in
+++ media/webrtc/signaling/test/Makefile.in
@@ -48,6 +48,12 @@ LIBS += \
   $(NULL)
 endif
 
+ifdef MOZ_NATIVE_OPUS
+LIBS += \
+  $(MOZ_OPUS_LIBS) \
+  $(NULL)
+endif
+
 ifdef MOZ_NATIVE_LIBVPX
 LIBS += \
   $(MOZ_LIBVPX_LIBS) \
diff --git media/webrtc/trunk/webrtc/modules/audio_coding/codecs/opus/opus.gypi media/webrtc/trunk/webrtc/modules/audio_coding/codecs/opus/opus.gypi
index 00e77e7..55f48ab 100644
--- media/webrtc/trunk/webrtc/modules/audio_coding/codecs/opus/opus.gypi
+++ media/webrtc/trunk/webrtc/modules/audio_coding/codecs/opus/opus.gypi
@@ -14,9 +14,9 @@
       'conditions': [
         ['build_with_mozilla==1', {
           # Mozilla provides its own build of the opus library.
-          'include_dirs': [
-            '$(DIST)/include/opus',
-           ]
+          'cflags_mozilla': [
+            '$(MOZ_OPUS_CFLAGS)',
+          ],
         }, {
           'dependencies': [
             '<(DEPTH)/third_party/opus/opus.gyp:opus'
diff --git toolkit/library/Makefile.in toolkit/library/Makefile.in
index 27f488e..cd27084 100644
--- toolkit/library/Makefile.in
+++ toolkit/library/Makefile.in
@@ -91,6 +91,18 @@ ifdef MOZ_NATIVE_HUNSPELL
 EXTRA_DSO_LDOPTS += $(MOZ_HUNSPELL_LIBS)
 endif
 
+ifdef MOZ_NATIVE_OGG
+EXTRA_DSO_LDOPTS += $(MOZ_OGG_LIBS)
+endif
+
+ifdef MOZ_NATIVE_VORBIS
+EXTRA_DSO_LDOPTS += $(MOZ_VORBIS_LIBS)
+endif
+
+ifdef MOZ_NATIVE_OPUS
+EXTRA_DSO_LDOPTS += $(MOZ_OPUS_LIBS)
+endif
+
 ifdef MOZ_NATIVE_LIBEVENT
 EXTRA_DSO_LDOPTS += $(MOZ_LIBEVENT_LIBS)
 endif