How to specify no ri/rdoc exists for a gem so user doesn't get warning when trying to install

A gem I'm authoring doesn't have any inline ri/rdoc of any kind, so when users gem install it they get warnings when rubygems tries to compile the docs:

Successfully installed mygem-0.0.1
1 gem installed
Installing ri documentation for mygem-0.0.1...
File not found: lib

I'm assuming this is due to it trying to run the ri tool against my app's lib folder which doesn't ex开发者_C百科ist (gem is all binaries). How can I avoid this error? I tried placing dummy files in lib/ but that didn't help.

So there was actually a confusion of issues on this question. I mistakenly assumed the error message about lib was associated with the message before it about the ri install.

This was not the case. The problem was that the default require_paths is ["lib"] which my gem did not have. Resetting the require_paths in my gemspec eliminated the error.