[erlang-questions] predefined Erlang version macros

[Stefan Jahn]

Dear Erlang'ers,

sometimes it would be nice to enable version-dependend code such as
needed here:

  %% R16B: use new ssh behaviour
  %-behaviour(ssh_daemon_channel).

  %% R15: use old ssh behaviour
  -behaviour(ssh_channel).


Is there anything suitable in Erlang?  Or is it unwanted because of
strict versioning requirements of modules and applications?

Thank you in advance,
  Stefan.