Index: js/src/build/moz.build
--- js/src/build/moz.build.orig
+++ js/src/build/moz.build
@@ -26,6 +26,7 @@ LIBRARY_DEFINES["MOZ_HAS_MOZGLUE"] = True
 if CONFIG["JS_SHARED_LIBRARY"]:
     GeckoSharedLibrary("js", linkage=None)
     SHARED_LIBRARY_NAME = CONFIG["JS_LIBRARY_NAME"]
+    LDFLAGS += ['-Wl,-soname,lib{}.so.${SO_VERSION}'.format(SHARED_LIBRARY_NAME)]
 
     # Ensure symbol versions of shared library on Linux do not conflict
     # with those in libxul.