1 files changed, 32 insertions, 0 deletions
diff --git a/ext/fcntl/fcntl.gemspec b/ext/fcntl/fcntl.gemspec
new file mode 100644
index 0000000000..613a90d1ae
--- /dev/null
+++ b/ext/fcntl/fcntl.gemspec
@@ -0,0 +1,32 @@
+# coding: utf-8
+# frozen_string_literal: true
+
+source_version = ["", "ext/fcntl/"].find do |dir|
+  begin
+    break File.open(File.join(__dir__, "#{dir}fcntl.c")) {|f|
+      f.gets("\n#define FCNTL_VERSION ")
+      f.gets[/\s*"(.+)"/, 1]
+    }
+  rescue Errno::ENOENT
+  end
+end
+
+Gem::Specification.new do |spec|
+  spec.name          = "fcntl"
+  spec.version       = source_version
+  spec.authors       = ["Yukihiro Matsumoto"]
+  spec.email         = ["matz@ruby-lang.org"]
+
+  spec.summary       = "Loads constants defined in the OS fcntl.h C header file"
+  spec.description   = "Loads constants defined in the OS fcntl.h C header file"
+  spec.homepage      = "https://github.com/ruby/fcntl"
+  spec.licenses      = ["Ruby", "BSD-2-Clause"]
+
+  spec.files         = ["ext/fcntl/extconf.rb", "ext/fcntl/fcntl.c"]
+  spec.extra_rdoc_files = [".document", ".rdoc_options", "BSDL", "COPYING", "README.md"]
+  spec.bindir        = "exe"
+  spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
+  spec.require_paths = ["lib"]
+  spec.extensions    = "ext/fcntl/extconf.rb"
+  spec.required_ruby_version = ">= 2.5.0"
+end