def ffi_open_yajl_library
      found = false
      expanded_library_names.each do |libname|
        begin
          ffi_lib libname
          found = true
        rescue LoadError
        end
      end
      ffi_lib "yajl" unless found
    end
def ffi_open_yajl_library
      found = false
      expanded_library_names.each do |libname|
        begin
          ffi_lib libname
          found = true
        rescue LoadError
        end
      end
      ffi_lib "yajl" unless found
    end
Iterate across the expanded library names in the libyajl2-gem and attempt
 to load them.  If they are missing just use `ffi_lib 'yajl'` to accept
 the FFI default algorithm to find the library.

 @api private