1 files changed, 31 insertions, 0 deletions
diff --git a/ext/zlib/zlib.gemspec b/ext/zlib/zlib.gemspec
new file mode 100644
index 0000000000..345dc5f225
--- /dev/null
+++ b/ext/zlib/zlib.gemspec
@@ -0,0 +1,31 @@
+# coding: utf-8
+# frozen_string_literal: true
+
+source_version = ["", "ext/zlib/"].find do |dir|
+  begin
+    break File.open(File.join(__dir__, "#{dir}zlib.c")) {|f|
+      f.gets("\n#define RUBY_ZLIB_VERSION ")
+      f.gets[/\s*"(.+)"/, 1]
+    }
+  rescue Errno::ENOENT
+  end
+end
+
+Gem::Specification.new do |spec|
+  spec.name          = "zlib"
+  spec.version       = source_version
+  spec.authors       = ["Yukihiro Matsumoto", "UENO Katsuhiro"]
+  spec.email         = ["matz@ruby-lang.org", nil]
+
+  spec.summary       = %q{Ruby interface for the zlib compression/decompression library}
+  spec.description   = %q{Ruby interface for the zlib compression/decompression library}
+  spec.homepage      = "https://github.com/ruby/zlib"
+  spec.licenses       = ["Ruby", "BSD-2-Clause"]
+
+  spec.files         = ["COPYING", "BSDL", "README.md", "ext/zlib/extconf.rb", "ext/zlib/zlib.c", "zlib.gemspec"]
+  spec.bindir        = "exe"
+  spec.executables   = []
+  spec.require_paths = ["lib"]
+  spec.extensions    = "ext/zlib/extconf.rb"
+  spec.required_ruby_version = ">= 2.5.0"
+end