1 files changed, 29 insertions, 0 deletions
diff --git a/lib/optparse/optparse.gemspec b/lib/optparse/optparse.gemspec
new file mode 100644
index 0000000000..ae6596678c
--- /dev/null
+++ b/lib/optparse/optparse.gemspec
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+name = File.basename(__FILE__, ".gemspec")
+version = ["lib", Array.new(name.count("-")+1, "..").join("/")].find do |dir|
+  break File.foreach(File.join(__dir__, dir, "#{name.tr('-', '/')}.rb")) do |line|
+    /^\s*OptionParser::Version\s*=\s*"(.*)"/ =~ line and break $1
+  end rescue nil
+end
+
+Gem::Specification.new do |spec|
+  spec.name          = name
+  spec.version       = version
+  spec.authors       = ["Nobu Nakada"]
+  spec.email         = ["nobu@ruby-lang.org"]
+
+  spec.summary       = %q{OptionParser is a class for command-line option analysis.}
+  spec.description   = %q{OptionParser is a class for command-line option analysis.}
+  spec.homepage      = "https://github.com/ruby/optparse"
+  spec.required_ruby_version = Gem::Requirement.new(">= 2.5.0")
+  spec.licenses      = ["Ruby", "BSD-2-Clause"]
+
+  spec.metadata["homepage_uri"] = spec.homepage
+  spec.metadata["source_code_uri"] = spec.homepage
+
+  spec.files         = Dir["{doc,lib,misc}/**/*"] + %w[README.md ChangeLog COPYING]
+  spec.bindir        = "exe"
+  spec.executables   = []
+  spec.require_paths = ["lib"]
+end