--- a/Makefile.in
+++ b/Makefile.in
@@ -43,18 +43,20 @@ ifeq (gonk,$(MOZ_WIDGET_TOOLKIT))
 tier_base_dirs += \
   other-licenses/android \
   $(NULL)
 endif
 
 ifdef MOZ_MEMORY
 tier_base_dirs += memory/mozjemalloc
 ifdef MOZ_JEMALLOC
+ifndef MOZ_NATIVE_JEMALLOC
 tier_base_dirs += memory/jemalloc
 endif
+endif
 tier_base_dirs += memory/build
 endif
 ifndef MOZ_NATIVE_ZLIB
 tier_base_dirs += modules/zlib
 endif
 tier_base_dirs += \
   mozglue \
   memory/mozalloc \

--- a/allmakefiles.sh
+++ b/allmakefiles.sh
@@ -54,17 +54,17 @@ if [ ! "$LIBXUL_SDK" ]; then
       build/stlport/stl/config/_android.h
     "
   fi
   add_makefiles "
     memory/mozalloc/Makefile
     mozglue/Makefile
     mozglue/build/Makefile
   "
-  if [ "$MOZ_JEMALLOC" ]; then
+  if [ "$MOZ_JEMALLOC" -a -z "$MOZ_NATIVE_JEMALLOC" ]; then
     add_makefiles "
       memory/jemalloc/Makefile
     "
   fi
   if [ "$MOZ_MEMORY" ]; then
     add_makefiles "
       memory/mozjemalloc/Makefile
       memory/build/Makefile

--- a/configure.in
+++ b/configure.in
@@ -7020,16 +7020,28 @@ else
     MOZ_GLUE_PROGRAM_LDFLAGS="$MOZ_GLUE_PROGRAM_LDFLAGS -rdynamic"
   fi
   if test "$MOZ_LINKER" = 1; then
     MOZ_GLUE_PROGRAM_LDFLAGS="$MOZ_GLUE_PROGRAM_LDFLAGS $ZLIB_LIBS"
   fi
 fi
 
 if test -z "$MOZ_MEMORY"; then
+  if test -n "$MOZ_JEMALLOC"; then
+    MOZ_NATIVE_JEMALLOC=1
+    AC_CHECK_FUNCS(mallctl nallocm,,
+      [MOZ_NATIVE_JEMALLOC=
+       break])
+    if test -n "$MOZ_NATIVE_JEMALLOC"; then
+      MOZ_MEMORY=1
+      AC_DEFINE(MOZ_MEMORY)
+      AC_DEFINE(MOZ_JEMALLOC)
+      AC_DEFINE(MOZ_NATIVE_JEMALLOC)
+    fi
+  fi
   case "${target}" in
     *-mingw*)
       if test -z "$WIN32_REDIST_DIR" -a -z "$MOZ_DEBUG"; then
         AC_MSG_WARN([When not building jemalloc, you need to set WIN32_REDIST_DIR to the path to the Visual C++ Redist (usually VCINSTALLDIR\redist\x86\Microsoft.VC80.CRT, for VC++ v8) if you intend to distribute your build.])
       fi
       ;;
   esac
 else
@@ -7114,16 +7126,17 @@ else
     ;;
   *)
     AC_MSG_ERROR([--enable-jemalloc not supported on ${target}])
     ;;
   esac
 fi # MOZ_MEMORY
 AC_SUBST(MOZ_MEMORY)
 AC_SUBST(MOZ_JEMALLOC)
+AC_SUBST(MOZ_NATIVE_JEMALLOC)
 AC_SUBST(MOZ_GLUE_LDFLAGS)
 AC_SUBST(MOZ_GLUE_PROGRAM_LDFLAGS)
 AC_SUBST(WIN32_CRT_LIBS)
 dnl Need to set this for make because NSS doesn't have configure
 AC_SUBST(DLLFLAGS)
 
 dnl We need to wrap dlopen and related functions on Android because we use
 dnl our own linker.
@@ -8947,17 +8960,17 @@ MOZ_CRASHREPORTER=${MOZ_CRASHREPORTER} \
 if cmp -s ./mozinfo.json.tmp ./mozinfo.json; then
   rm ./mozinfo.json.tmp
 else
   mv -f ./mozinfo.json.tmp ./mozinfo.json
 fi
 
 # Run jemalloc configure script
 
-if test "$MOZ_JEMALLOC" -a "$MOZ_MEMORY"; then
+if test -z "$MOZ_NATIVE_JEMALLOC" -a "$MOZ_JEMALLOC" -a "$MOZ_MEMORY" ; then
   ac_configure_args="$_SUBDIR_CONFIG_ARGS --build=$build --host=$target --enable-stats --with-jemalloc-prefix=je_"
   if test "$OS_ARCH" = "Linux"; then
     MANGLE="malloc calloc valloc free realloc memalign posix_memalign malloc_usable_size"
     MANGLED=
     JEMALLOC_WRAPPER=
     if test -n "$_WRAP_MALLOC"; then
       JEMALLOC_WRAPPER=__wrap_
     fi

--- a/memory/build/Makefile.in
+++ b/memory/build/Makefile.in
@@ -17,14 +17,16 @@ ifdef MOZ_GLUE_PROGRAM_LDFLAGS
 SDK_LIBRARY = $(REAL_LIBRARY)
 DIST_INSTALL = 1
 endif
 
 CSRCS = extraMallocFuncs.c
 
 ifdef MOZ_JEMALLOC
 CSRCS += mozjemalloc_compat.c
+ifndef MOZ_NATIVE_JEMALLOC
 SHARED_LIBRARY_LIBS += $(call EXPAND_LIBNAME_PATH,jemalloc,$(DEPTH)/memory/jemalloc)
+endif
 else
 SHARED_LIBRARY_LIBS += $(call EXPAND_LIBNAME_PATH,jemalloc,$(DEPTH)/memory/mozjemalloc)
 endif
 
 include $(topsrcdir)/config/rules.mk

--- a/memory/build/extraMallocFuncs.c
+++ b/memory/build/extraMallocFuncs.c
@@ -113,18 +113,26 @@ wrap(wcsdup)(const wchar_t *src)
     wcsncpy(dst, src, len + 1);
   return dst;
 }
 #endif /* XP_WIN */
 
 #endif
 
 #ifdef MOZ_JEMALLOC
+
+#undef wrap
+#if defined(MOZ_NATIVE_JEMALLOC)
+#define wrap(a) a
+#else
+#define wrap(a) je_ ## a
+#endif
+
 /* Override some jemalloc defaults */
-const char *je_malloc_conf = "narenas:1,lg_chunk:20";
+MOZ_EXPORT_DATA(const char *) wrap(malloc_conf) = "narenas:1,lg_chunk:20";
 
 #ifdef ANDROID
 #include <android/log.h>
 
 static void
 _je_malloc_message(void *cbopaque, const char *s)
 {
   __android_log_print(ANDROID_LOG_INFO, "GeckoJemalloc", "%s", s);

--- a/memory/build/mozjemalloc_compat.c
+++ b/memory/build/mozjemalloc_compat.c
@@ -1,18 +1,25 @@
 /* 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 "mozilla/Types.h"
 #include "jemalloc_types.h"
 
-extern int je_mallctl(const char*, void*, size_t*, void*, size_t);
+#if defined(MOZ_NATIVE_JEMALLOC)
+#define wrap(a) a
+#else
+#define wrap(a) je_ ## a
+#endif
 
-MOZ_EXPORT_API (void)
+extern MOZ_IMPORT_API(int)
+wrap(mallctl)(const char*, void*, size_t*, void*, size_t);
+
+MOZ_EXPORT_API(void)
 jemalloc_stats(jemalloc_stats_t *stats)
 {
   size_t size = sizeof(stats->mapped);
-  je_mallctl("stats.mapped", &stats->mapped, &size, NULL, 0);
-  je_mallctl("stats.allocated", &stats->allocated, &size, NULL, 0);
+  wrap(mallctl)("stats.mapped", &stats->mapped, &size, NULL, 0);
+  wrap(mallctl)("stats.allocated", &stats->allocated, &size, NULL, 0);
   stats->committed = -1;
   stats->dirty = -1;
 }

--- a/memory/mozjemalloc/jemalloc.h
+++ b/memory/mozjemalloc/jemalloc.h
@@ -32,46 +32,52 @@
 #ifndef _JEMALLOC_H_
 #define _JEMALLOC_H_
 
 #if defined(MOZ_MEMORY_DARWIN)
 #include <malloc/malloc.h>
 #endif
 #include "jemalloc_types.h"
 
+#if defined(MOZ_NATIVE_JEMALLOC)
+#define wrap(a) a
+#else
+#define wrap(a) je_ ## a
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#if defined(MOZ_MEMORY_LINUX)
+#if defined(MOZ_NATIVE_JEMALLOC) || defined(MOZ_MEMORY_LINUX)
 __attribute__((weak))
 #endif
 void	jemalloc_stats(jemalloc_stats_t *stats);
 
 /* Computes the usable size in advance. */
 #if !defined(MOZ_MEMORY_DARWIN)
 #if defined(MOZ_MEMORY_LINUX)
 __attribute__((weak))
 #endif
 #if defined(MOZ_JEMALLOC)
-int je_nallocm(size_t *rsize, size_t size, int flags);
+MOZ_IMPORT_API(int) wrap(nallocm)(size_t *rsize, size_t size, int flags);
 #else
 size_t je_malloc_good_size(size_t size);
 #endif
 #endif
 
 static inline size_t je_malloc_usable_size_in_advance(size_t size) {
 #if defined(MOZ_MEMORY_DARWIN)
   return malloc_good_size(size);
 #elif defined(MOZ_JEMALLOC)
-  if (je_nallocm) {
+  if (wrap(nallocm)) {
     size_t ret;
     if (size == 0)
       size = 1;
-    if (!je_nallocm(&ret, size, 0))
+    if (!wrap(nallocm)(&ret, size, 0))
       return ret;
   }
   return size;
 #else
   if (je_malloc_good_size)
     return je_malloc_good_size(size);
   else
     return size;
@@ -108,9 +114,11 @@ static inline void jemalloc_purge_freed_
 #else
 void    jemalloc_purge_freed_pages();
 #endif
 
 #ifdef __cplusplus
 } /* extern "C" */
 #endif
 
+#undef wrap
+
 #endif /* _JEMALLOC_H_ */

--- a/mozglue/build/Makefile.in
+++ b/mozglue/build/Makefile.in
@@ -18,17 +18,17 @@ DIST_INSTALL = 1
 # If this is ever changed, update MOZ_SHARED_MOZGLUE in browser/installer/Makefile.in
 ifneq (,$(filter WINNT Darwin Android,$(OS_TARGET)))
 FORCE_SHARED_LIB = 1
 else
 FORCE_STATIC_LIB = 1
 endif
 
 # Keep jemalloc separated when mozglue is statically linked
-ifeq (1_1,$(MOZ_MEMORY)_$(FORCE_SHARED_LIB))
+ifeq (1_1,$(MOZ_MEMORY)_$(or $(MOZ_NATIVE_JEMALLOC),$(FORCE_SHARED_LIB)))
 SHARED_LIBRARY_LIBS = $(call EXPAND_LIBNAME_PATH,memory,$(DEPTH)/memory/build)
 else
 # Temporary, until bug 662814 lands
 VISIBILITY_FLAGS =
 CPPSRCS = dummy.cpp
 
 ifneq (,$(filter OS2 WINNT,$(OS_ARCH)))
 SDK_LIBRARY = $(IMPORT_LIBRARY)