|  | Gem::Specification.new do |s| | 
|  | s.name        = "google-protobuf" | 
|  | s.version     = "3.21.5" | 
|  | git_tag       = "v#{s.version.to_s.sub('.rc.', '-rc')}" # Converts X.Y.Z.rc.N to vX.Y.Z-rcN, used for the git tag | 
|  | s.licenses    = ["BSD-3-Clause"] | 
|  | s.summary     = "Protocol Buffers" | 
|  | s.description = "Protocol Buffers are Google's data interchange format." | 
|  | s.homepage    = "https://developers.google.com/protocol-buffers" | 
|  | s.authors     = ["Protobuf Authors"] | 
|  | s.email       = "protobuf@googlegroups.com" | 
|  | s.metadata    = { "source_code_uri" => "https://github.com/protocolbuffers/protobuf/tree/#{git_tag}/ruby" } | 
|  | s.require_paths = ["lib"] | 
|  | s.files       = Dir.glob('lib/**/*.rb') | 
|  | if RUBY_PLATFORM == "java" | 
|  | s.platform  = "java" | 
|  | s.files     += ["lib/google/protobuf_java.jar"] | 
|  | else | 
|  | s.files     += Dir.glob('ext/**/*') | 
|  | s.extensions= ["ext/google/protobuf_c/extconf.rb"] | 
|  | s.add_development_dependency "rake-compiler-dock", "= 1.2.1"  end | 
|  | s.test_files  = ["tests/basic.rb", | 
|  | "tests/stress.rb", | 
|  | "tests/generated_code_test.rb"] | 
|  | s.required_ruby_version = '>= 2.3' | 
|  | s.add_development_dependency "rake-compiler", "~> 1.1.0" | 
|  | s.add_development_dependency "test-unit", '~> 3.0', '>= 3.0.9' | 
|  | end |