diff --git i/js/src/build/Makefile.in w/js/src/build/Makefile.in
index ee19104e0ef5..a0f06fd35a18 100644
--- i/js/src/build/Makefile.in
+++ w/js/src/build/Makefile.in
@@ -89,6 +89,8 @@ ifneq (,$(REAL_LIBRARY))
 endif
 ifneq (,$(SHARED_LIBRARY))
 	$(SYSINSTALL) $(SHARED_LIBRARY) $(DESTDIR)$(libdir)
+	mv -f $(DESTDIR)$(libdir)/$(SHARED_LIBRARY) $(DESTDIR)$(libdir)/$(SHARED_LIBRARY).0
+	ln -s $(SHARED_LIBRARY).0 $(DESTDIR)$(libdir)/$(SHARED_LIBRARY)
 ifeq ($(OS_ARCH),Darwin)
 	install_name_tool -id $(abspath $(libdir)/$(SHARED_LIBRARY)) $(DESTDIR)$(libdir)/$(SHARED_LIBRARY)
 endif
diff --git i/js/src/build/moz.build w/js/src/build/moz.build
--- mozjs-68.4.2/js/src/build/moz.build.orig	2020-03-23 10:16:23.762000000 +0100
+++ mozjs-68.4.2/js/src/build/moz.build	2020-03-23 10:16:52.427000000 +0100
@@ -25,6 +25,7 @@
 if CONFIG['JS_SHARED_LIBRARY']:
     GeckoSharedLibrary('js', linkage=None)
     SHARED_LIBRARY_NAME = CONFIG['JS_LIBRARY_NAME']
+    LDFLAGS += ['-Wl,-soname,lib{}.so.0'.format(SHARED_LIBRARY_NAME)]
 
     # Ensure symbol versions of shared library on Linux do not conflict
     # with those in libxul.