code: private String fatJarLibraryPath(String linkage, String flavor) {
      String sep = "/"; //System.getProperty("file.separator");
      String os_name = getUnifiedOSName();
      String os_arch = System.getProperty("os.arch");
      String path = sep + "lib" + sep + linkage + sep + os_name + sep + os_arch + sep;
      if (null != flavor)
        path += flavor + sep;
      return path;
    }
docs: Compute the path to the library. The path is basically
  "/" + os.name + "/" + os.arch + "/" + libname.