Difference between add_dependency and add_runtime_dependency?

问题

What is the difference between using add_dependency and add_runtime_dependency in a Rails engine's gemspec?

For example:

Gem::Specification.new do |s|
  s.add_dependency 'jquery-rails'
  s.add_runtime_dependency 'jquery-rails'
end

What's the difference between them?

回答1:

They are the same. add_dependency is just an alias for add_runtime_dependency.

来源：https://stackoverflow.com/questions/24333152/difference-between-add-dependency-and-add-runtime-dependency