diff -Naur js/src/configure.in js.new/src/configure.in
--- a/js/src/configure.in	2012-11-07 09:36:16.000000000 -0500
+++ b/js/src/configure.in	2012-11-07 09:37:05.000000000 -0500
@@ -6018,6 +6018,11 @@
 rm conftest.sh
 
 echo $MAKEFILES > unallmakefiles
+cat <<SYMVEREOF >symverscript
+MOZJS185 {
+  global: *;
+};
+SYMVEREOF
 
 mv -f config/autoconf.mk config/autoconf.mk.orig 2> /dev/null
 
diff -Naur js/src/Makefile.in js.new/src/Makefile.in
--- a/js/src/Makefile.in	2012-11-07 09:36:16.000000000 -0500
+++ b/js/src/Makefile.in	2012-11-07 09:37:09.000000000 -0500
@@ -871,7 +871,7 @@
 SHLIB_ANY_VER   := $(DESTDIR)$(libdir)/$(SHARED_LIBRARY)
 SHLIB_ABI_VER   := $(DESTDIR)$(libdir)/$(SHARED_LIBRARY).$(SRCREL_ABI_VERSION)
 SHLIB_EXACT_VER := $(DESTDIR)$(libdir)/$(SHARED_LIBRARY).$(SRCREL_VERSION)
-$(SHARED_LIBRARY): EXTRA_DSO_LDOPTS += -Wl,-soname,$(notdir $(SHLIB_ABI_VER))
+$(SHARED_LIBRARY): EXTRA_DSO_LDOPTS += -Wl,-soname,$(notdir $(SHLIB_ABI_VER)) -Wl,-version-script,symverscript
 endif
 endif