Creating a Gem

#ruby #rails #gems

Creating a Gem

After compiling and testing our C Extension for Ruby, we can now create a Gem!
First, we should create some folders to organize the project.

See below:

Second, create the file lib/foo.rb:

require 'foo/foo'

(You can create other classes inside this file if you desire.)

And finally, create the file foo.gemspec inside the root of the project:

Gem::Specification.new "foo", "0.0.0" do |s|
  s.summary     = "A SUMMARY"
  s.description = "A DESCRIPTION"
  s.authors     = ["author"]
  s.email       = "email@example.com"
  s.files       = %w[lib/foo.rb lib/foo/foo.so]
  s.homepage    = "http://anylink.com"
  s.license     = "MIT"
  s.extensions  = %w[ext/foo/extconf.rb]
end

Now you can run on the root project:

gem build foo.gemspec
gem install foo

To test the gem you can open the irb and past this code:

require 'foo'

Greeting.hello
# hello!

🎉 Yeahhhh!!! We have a Gem!!! 🎉

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