# File lib/rake.rb, line 2458
2458:     def const_warning(const_name)
2459:       @const_warning ||= false
2460:       if ! @const_warning
2461:         $stderr.puts %{WARNING: Deprecated reference to top-level constant '#{const_name}' } +
2462:           %{found at: #{rakefile_location}} # '
2463:         $stderr.puts %{    Use --classic-namespace on rake command}
2464:         $stderr.puts %{    or 'require "rake/classic_namespace"' in Rakefile}
2465:       end
2466:       @const_warning = true
2467:     end