# Allow more config/external/ libs built against system-wide version.

diff --git config/Makefile.in config/Makefile.in
index 5383399..0410004 100644
--- config/Makefile.in
+++ config/Makefile.in
@@ -77,6 +77,11 @@ export:: $(export-preqs)
 		-DMOZ_NATIVE_ICU=$(MOZ_NATIVE_ICU) \
 		-DMOZ_NATIVE_GRAPHITE2=$(MOZ_NATIVE_GRAPHITE2) \
 		-DMOZ_NATIVE_HARFBUZZ=$(MOZ_NATIVE_HARFBUZZ) \
+		-DMOZ_NATIVE_OGG=$(MOZ_NATIVE_OGG) \
+		-DMOZ_NATIVE_THEORA=$(MOZ_NATIVE_THEORA) \
+		-DMOZ_NATIVE_VORBIS=$(MOZ_NATIVE_VORBIS) \
+		-DMOZ_NATIVE_TREMOR=$(MOZ_NATIVE_TREMOR) \
+		-DMOZ_NATIVE_SOUNDTOUCH=$(MOZ_NATIVE_SOUNDTOUCH) \
 		$(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 f67c5c7..eb909ce 100644
--- config/external/moz.build
+++ config/external/moz.build
@@ -20,12 +20,21 @@ if CONFIG['MOZ_UPDATER']:
 # There's no "native brotli" yet, but probably in the future...
 external_dirs += ['modules/brotli']
 
-if CONFIG['MOZ_VORBIS']:
+if not CONFIG['MOZ_NATIVE_OGG']:
+    external_dirs += ['media/libogg']
+
+if CONFIG['MOZ_VORBIS'] and not CONFIG['MOZ_NATIVE_VORBIS']:
     external_dirs += ['media/libvorbis']
 
-if CONFIG['MOZ_TREMOR']:
+if CONFIG['MOZ_TREMOR'] and not CONFIG['MOZ_NATIVE_TREMOR']:
     external_dirs += ['media/libtremor']
 
+if not CONFIG['MOZ_NATIVE_THEORA']:
+    external_dirs += ['media/libtheora']
+
+if not CONFIG['MOZ_NATIVE_SOUNDTOUCH']:
+    external_dirs += ['media/libsoundtouch']
+
 if CONFIG['MOZ_WEBM_ENCODER']:
     external_dirs += ['media/libmkv']
 
@@ -51,12 +60,9 @@ external_dirs += [
     'media/kiss_fft',
     'media/libcubeb',
     'media/libnestegg',
-    'media/libogg',
     'media/libopus',
-    'media/libtheora',
     'media/libspeex_resampler',
     'media/libstagefright',
-    'media/libsoundtouch',
 ]
 
 DIRS += ['../../' + i for i in external_dirs]
diff --git config/system-headers config/system-headers
index bef567c..9807c29 100644
--- config/system-headers
+++ config/system-headers
@@ -1364,3 +1363,17 @@ 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_THEORA==1
+theora/theoradec.h
+#endif
+#if MOZ_NATIVE_VORBIS==1
+vorbis/codec.h
+vorbis/vorbisenc.h
+#endif
+#if MOZ_NATIVE_TREMOR==1
+tremor/ivorbiscodec.h
+#endif
diff --git old-configure.in configure.in
index 87db361..7947626 100644
--- old-configure.in
+++ old-configure.in
@@ -5401,6 +5401,111 @@ if test -n "$MOZ_OMX_PLUGIN"; then
     fi
 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 "$MOZ_NATIVE_OGG"; then
+    PKG_CHECK_MODULES(MOZ_OGG, ogg >= 1.2.1)
+
+    _SAVE_LIBS=$LIBS
+    LIBS="$LIBS $MOZ_OGG_LIBS"
+    AC_CHECK_FUNC(ogg_set_mem_functions, [],
+      [AC_DEFINE(MOZ_OGG_NO_MEM_REPORTING)])
+    LIBS=$_SAVE_LIBS
+fi
+
+AC_SUBST(MOZ_NATIVE_OGG)
+
+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 "$MOZ_NATIVE_VORBIS"; then
+    PKG_CHECK_MODULES(MOZ_VORBIS, vorbis vorbisenc >= 1.3.5)
+fi
+
+AC_SUBST(MOZ_NATIVE_VORBIS)
+
+dnl ========================================================
+dnl Check for integer-only libvorbis aka tremor
+dnl ========================================================
+
+MOZ_ARG_WITH_BOOL(system-tremor,
+[  --with-system-tremor    Use system libtremor (located with pkgconfig)],
+MOZ_NATIVE_TREMOR=1,
+MOZ_NATIVE_TREMOR=)
+
+if test -n "$MOZ_NATIVE_TREMOR"; then
+    PKG_CHECK_MODULES(MOZ_TREMOR, vorbisidec >= 1.2.1)
+fi
+
+AC_SUBST(MOZ_NATIVE_TREMOR)
+
+dnl ========================================================
+dnl Check for libtheora
+dnl ========================================================
+
+MOZ_ARG_WITH_BOOL(system-theora,
+[  --with-system-theora    Use system libtheora (located with pkgconfig)],
+MOZ_NATIVE_THEORA=1,
+MOZ_NATIVE_THEORA=)
+
+if test -n "$MOZ_NATIVE_THEORA"; then
+    PKG_CHECK_MODULES(MOZ_THEORA, theora >= 1.2)
+fi
+
+AC_SUBST(MOZ_NATIVE_THEORA)
+
+dnl ========================================================
+dnl Check for libSoundTouch
+dnl ========================================================
+
+MOZ_ARG_WITH_BOOL(system-soundtouch,
+[  --with-system-soundtouch Use system libSoundTouch (located with pkgconfig)],
+MOZ_NATIVE_SOUNDTOUCH=1,
+MOZ_NATIVE_SOUNDTOUCH=)
+
+if test -n "$MOZ_NATIVE_SOUNDTOUCH"; then
+    PKG_CHECK_MODULES(MOZ_SOUNDTOUCH, soundtouch >= 1.9.0)
+
+    AC_LANG_SAVE
+    AC_LANG_CPLUSPLUS
+    _SAVE_CXXFLAGS=$CXXFLAGS
+    CXXFLAGS="$CXXFLAGS $MOZ_SOUNDTOUCH_CFLAGS"
+    AC_CACHE_CHECK(for soundtouch sample type,
+                   ac_cv_soundtouch_sample_type,
+                   [AC_TRY_COMPILE([#include <SoundTouch.h>
+                                    #ifndef SOUNDTOUCH_INTEGER_SAMPLES
+                                    #error soundtouch expects float samples
+                                    #endif],
+                                   [],
+                                   [ac_cv_soundtouch_sample_type=short],
+                                   [ac_cv_soundtouch_sample_type=float])])
+    CXXFLAGS=$_SAVE_CXXFLAGS
+    AC_LANG_RESTORE
+
+    if test \( -n "$MOZ_SAMPLE_TYPE_S16" -a "$ac_cv_soundtouch_sample_type" != short \) \
+         -o \( -n "$MOZ_SAMPLE_TYPE_FLOAT32" -a "$ac_cv_soundtouch_sample_type" != float \) ; then
+        AC_MSG_ERROR([SoundTouch library is built with incompatible sample type. Either rebuild the library with/without --enable-integer-samples, chase default Mozilla sample type or remove --with-system-soundtouch.])
+    fi
+fi
+
+if test -n "$MOZ_NATIVE_SOUNDTOUCH"; then
+    AC_DEFINE(MOZ_NATIVE_SOUNDTOUCH)
+fi
+AC_SUBST(MOZ_NATIVE_SOUNDTOUCH)
+
 dnl system libvpx Support
 dnl ========================================================
 MOZ_ARG_WITH_BOOL(system-libvpx,
diff --git dom/media/AudioStream.cpp dom/media/AudioStream.cpp
index 2127256..1ec09fe 100644
--- dom/media/AudioStream.cpp
+++ dom/media/AudioStream.cpp
@@ -129,7 +129,9 @@ AudioStream::AudioStream()
   , mOutChannels(0)
   , mWritten(0)
   , mAudioClock(this)
+#ifndef MOZ_NATIVE_SOUNDTOUCH
   , mTimeStretcher(nullptr)
+#endif
   , mDumpFile(nullptr)
   , mBytesPerFrame(0)
   , mState(INITIALIZED)
@@ -152,9 +154,11 @@ AudioStream::~AudioStream()
   if (mDumpFile) {
     fclose(mDumpFile);
   }
+#ifndef MOZ_NATIVE_SOUNDTOUCH
   if (mTimeStretcher) {
     soundtouch::destroySoundTouchObj(mTimeStretcher);
   }
+#endif
 }
 
 size_t
@@ -177,7 +181,11 @@ nsresult AudioStream::EnsureTimeStretcherInitializedUnlocked()
 {
   mMonitor.AssertCurrentThreadOwns();
   if (!mTimeStretcher) {
+#ifdef MOZ_NATIVE_SOUNDTOUCH
+    mTimeStretcher = new soundtouch::SoundTouch();
+#else
     mTimeStretcher = soundtouch::createSoundTouchObj();
+#endif
     mTimeStretcher->setSampleRate(mInRate);
     mTimeStretcher->setChannels(mOutChannels);
     mTimeStretcher->setPitch(1.0);
diff --git dom/media/AudioStream.h dom/media/AudioStream.h
index a552e3e..02b80b1 100644
--- dom/media/AudioStream.h
+++ dom/media/AudioStream.h
@@ -15,7 +15,11 @@
 #include "mozilla/RefPtr.h"
 #include "mozilla/UniquePtr.h"
 #include "CubebUtils.h"
+#ifdef MOZ_NATIVE_SOUNDTOUCH
+#include "soundtouch/SoundTouch.h"
+#else
 #include "soundtouch/SoundTouchFactory.h"
+#endif
 
 namespace mozilla {
 
@@ -277,7 +277,11 @@ private:
   // Number of frames written to the buffers.
   int64_t mWritten;
   AudioClock mAudioClock;
+#ifdef MOZ_NATIVE_SOUNDTOUCH
+  nsAutoPtr<soundtouch::SoundTouch> mTimeStretcher;
+#else
   soundtouch::SoundTouch* mTimeStretcher;
+#endif
 
   // Stream start time for stream open delay telemetry.
   TimeStamp mStartTime;
diff --git dom/media/moz.build dom/media/moz.build
index 7526cff..e0a0ca0 100644
--- dom/media/moz.build
+++ dom/media/moz.build
@@ -300,6 +300,21 @@ if CONFIG['MOZ_WEBRTC']:
 
 DEFINES['MOZILLA_INTERNAL_API'] = True
 
+if CONFIG['MOZ_NATIVE_OGG']:
+    CXXFLAGS += CONFIG['MOZ_OGG_CFLAGS']
+
+if CONFIG['MOZ_NATIVE_THEORA']:
+    CXXFLAGS += CONFIG['MOZ_THEORA_CFLAGS']
+
+if CONFIG['MOZ_NATIVE_VORBIS']:
+    CXXFLAGS += CONFIG['MOZ_VORBIS_CFLAGS']
+
+if CONFIG['MOZ_NATIVE_TREMOR']:
+    CXXFLAGS += CONFIG['MOZ_TREMOR_CFLAGS']
+
+if CONFIG['MOZ_NATIVE_SOUNDTOUCH']:
+    CXXFLAGS += CONFIG['MOZ_SOUNDTOUCH_CFLAGS']
+
 if CONFIG['OS_TARGET'] == 'WINNT':
     DEFINES['WEBRTC_WIN'] = True
 else:
diff --git media/libogg/README_MOZILLA media/libogg/README_MOZILLA
index 0833e4d..7ece97b 100644
--- media/libogg/README_MOZILLA
+++ media/libogg/README_MOZILLA
@@ -6,3 +6,6 @@ The svn revision number used was r17287.
 The int-types.patch address a bug that config_types.h generated from
 Linux platform can't be used on OpenSolaris directly see Mozilla bug
 449754
+
+The in-tree copy may be omitted during build by --with-system-ogg.
+Keep version in old-configure.in in sync on updates.
diff --git media/libsoundtouch/README_MOZILLA media/libsoundtouch/README_MOZILLA
index bfd4b1a..15b158d 100644
--- media/libsoundtouch/README_MOZILLA
+++ media/libsoundtouch/README_MOZILLA
@@ -6,3 +6,5 @@ The whole library is not used, only the relevant files are imported in the tree,
 using the script `update.sh`. Some changes have been made to the files, using
 the patch `moz-libsoundtouch.patch`. We also use a custom soundtouch_config.h.
 
+The in-tree copy may be omitted during build by --with-system-soundtouch.
+Keep version in old-configure.in in sync on updates.
diff --git media/libsoundtouch/src/soundtouch_perms.h media/libsoundtouch/src/soundtouch_perms.h
index 0af2fe6..d80c145 100644
--- media/libsoundtouch/src/soundtouch_perms.h
+++ media/libsoundtouch/src/soundtouch_perms.h
@@ -12,7 +12,9 @@
 
 #pragma GCC visibility push(default)
 #include "SoundTouch.h"
+#ifndef MOZ_NATIVE_SOUNDTOUCH
 #include "SoundTouchFactory.h"
+#endif
 #pragma GCC visibility pop
 
 #endif // MOZILLA_SOUNDTOUCH_PERMS_H
diff --git media/libtheora/README_MOZILLA media/libtheora/README_MOZILLA
index d48dbfa..f08a2ed 100644
--- media/libtheora/README_MOZILLA
+++ media/libtheora/README_MOZILLA
@@ -3,3 +3,6 @@ using the update.sh script. The changes made were those applied by update.sh,
 the addition/update of Makefile.in files for the Mozilla build system.
 
 The subversion revision used was r17578.
+
+The in-tree copy may be omitted during build by --with-system-theora.
+Keep version in old-configure.in in sync on updates.
diff --git media/libtheora/moz.build media/libtheora/moz.build
index 14265b1..3069e99 100644
--- media/libtheora/moz.build
+++ media/libtheora/moz.build
@@ -21,6 +21,9 @@ if CONFIG['GKMEDIAS_SHARED_LIBRARY']:
 # The encoder is currently not included.
 DEFINES['THEORA_DISABLE_ENCODE'] = True
 
+if CONFIG['MOZ_NATIVE_OGG']:
+    CFLAGS += CONFIG['MOZ_OGG_CFLAGS']
+
 # Suppress warnings in third-party code.
 if CONFIG['GNU_CC']:
     CFLAGS += ['-Wno-type-limits']
diff --git media/libtremor/README_MOZILLA media/libtremor/README_MOZILLA
index ee67b53..3f34a09 100644
--- media/libtremor/README_MOZILLA
+++ media/libtremor/README_MOZILLA
@@ -5,3 +5,6 @@ Makefile.in files for the Mozilla build system.
 
 The upstream release used was http://svn.xiph.org/trunk/Tremor/
 The subversion revision used was r17547.
+
+The in-tree copy may be omitted during build by --with-system-tremor.
+Keep version in old-configure.in in sync on updates.
diff --git media/libtremor/moz.build media/libtremor/moz.build
index 31831ba..a03d576 100644
--- media/libtremor/moz.build
+++ media/libtremor/moz.build
@@ -6,3 +6,5 @@
 
 DIRS += ['include/tremor', 'lib']
 
+if CONFIG['MOZ_NATIVE_OGG']:
+    CFLAGS += CONFIG['MOZ_OGG_CFLAGS']
diff --git media/libvorbis/README_MOZILLA media/libvorbis/README_MOZILLA
index 7c7454c..55baedd 100644
--- media/libvorbis/README_MOZILLA
+++ media/libvorbis/README_MOZILLA
@@ -8,3 +8,6 @@ https://svn.xiph.org/tags/vorbis/libvorbis-1.3.4@19059
 
 Some files are renamed during the copy to prevent clashes with object
 file names with other Mozilla libraries.
+
+The in-tree copy may be omitted during build by --with-system-vorbis.
+Keep version in old-configure.in in sync on updates.
diff --git media/libvorbis/moz.build media/libvorbis/moz.build
index 919b99e..cc776f7 100644
--- media/libvorbis/moz.build
+++ media/libvorbis/moz.build
@@ -55,3 +55,6 @@ FINAL_LIBRARY = 'gkmedias'
 # Suppress warnings in third-party code.
 if CONFIG['GNU_CC']:
     CFLAGS += ['-Wno-uninitialized']
+
+if CONFIG['MOZ_NATIVE_OGG']:
+    CFLAGS += CONFIG['MOZ_OGG_CFLAGS']
diff --git toolkit/library/moz.build toolkit/library/moz.build
index d42137a..695e75a8 100644
--- toolkit/library/moz.build
+++ toolkit/library/moz.build
@@ -178,6 +178,21 @@ if CONFIG['MOZ_NATIVE_PNG']:
 if CONFIG['MOZ_NATIVE_HUNSPELL']:
     OS_LIBS += CONFIG['MOZ_HUNSPELL_LIBS']
 
+if CONFIG['MOZ_NATIVE_OGG']:
+    OS_LIBS += CONFIG['MOZ_OGG_LIBS']
+
+if CONFIG['MOZ_NATIVE_THEORA']:
+    OS_LIBS += CONFIG['MOZ_THEORA_LIBS']
+
+if CONFIG['MOZ_NATIVE_VORBIS']:
+    OS_LIBS += CONFIG['MOZ_VORBIS_LIBS']
+
+if CONFIG['MOZ_NATIVE_TREMOR']:
+    OS_LIBS += CONFIG['MOZ_TREMOR_LIBS']
+
+if CONFIG['MOZ_NATIVE_SOUNDTOUCH']:
+    OS_LIBS += CONFIG['MOZ_SOUNDTOUCH_LIBS']
+
 if CONFIG['MOZ_NATIVE_LIBEVENT']:
     OS_LIBS += CONFIG['MOZ_LIBEVENT_LIBS']
 
diff --git xpcom/build/XPCOMInit.cpp xpcom/build/XPCOMInit.cpp
index 2cf281e..6d7af0e 100644
--- xpcom/build/XPCOMInit.cpp
+++ xpcom/build/XPCOMInit.cpp
@@ -138,7 +138,9 @@ extern nsresult nsStringInputStreamConstructor(nsISupports*, REFNSIID, void**);
 #include "mozilla/VisualEventTracer.h"
 #endif
 
+#ifndef MOZ_OGG_NO_MEM_REPORTING
 #include "ogg/ogg.h"
+#endif
 #if defined(MOZ_VPX) && !defined(MOZ_VPX_NO_MEM_REPORTING)
 #include "vpx_mem/vpx_mem.h"
 #endif
@@ -651,11 +653,13 @@ NS_InitXPCOM2(nsIServiceManager** aResult,
   // this oddness.
   mozilla::SetICUMemoryFunctions();
 
+#ifndef MOZ_OGG_NO_MEM_REPORTING
   // Do the same for libogg.
   ogg_set_mem_functions(OggReporter::CountingMalloc,
                         OggReporter::CountingCalloc,
                         OggReporter::CountingRealloc,
                         OggReporter::CountingFree);
+#endif
 
 #if defined(MOZ_VPX) && !defined(MOZ_VPX_NO_MEM_REPORTING)
   // And for VPX.
