Should I add files that are part of the Ruby Standard Library to the `Gemfile`?

I need to do require 'openssl' in my code. Otherwise, I get NameError: uninitialized constant Object::OpenSSL. But, when I do gem list, I don't see openssl. I'm deploying a Sinatra app to Heroku stack bamboo-mri-1.9.2. Should I add openssl to the Gemfile? I don't think so because开发者_Go百科 I think openssl is part of the Ruby Standard Library. Also, what about base64?

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You do not need to include gems in the Gemfile that are in the Ruby Standard Library for the versions of Ruby you support.

You can have your program auto-require all gems in Gemfile. Rails does this. Otherwise, just require 'gem_name' in the files that require it.

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It's very likely that you have compiled ruby without openssl support. If you are using RVM, you can try this