# File lib/rake.rb, line 1983
1983:     def const_warning(const_name)
1984:       @const_warning ||= false
1985:       if ! @const_warning
1986:         $stderr.puts %{WARNING: Deprecated reference to top-level constant '#{const_name}' } +
1987:           %{found at: #{rakefile_location}} # '
1988:         $stderr.puts %{    Use --classic-namespace on rake command}
1989:         $stderr.puts %{    or 'require "rake/classic_namespace"' in Rakefile}
1990:       end
1991:       @const_warning = true
1992:     end