Rakefile in pycall-0.1.0.alpha.20170711 vs Rakefile in pycall-1.0.0

@@ -1,8 +1,29 @@
-require "bundler/gem_tasks"
+require "bundler"
+Bundler::GemHelper.install_tasks
+
+require "rake"
+require "rake/extensiontask"
 require "rspec/core/rake_task"
 
 Dir[File.expand_path('../tasks/**/*.rake', __FILE__)].each {|f| load f }
 
+gem_spec = eval(File.read('pycall.gemspec'))
+Rake::ExtensionTask.new('pycall', gem_spec) do |ext|
+  ext.lib_dir = File.join(*['lib', ENV['FAT_DIR']].compact)
+  ext.cross_compile = true
+  ext.cross_platform = %w[x86-mingw32 x64-mingw32]
+  ext.cross_compiling do |s|
+    s.files.concat %w[lib/2.2/pycall.so lib/2.3/pycall.so lib/2.4/pycall.so]
+  end
+end
+
+desc "Compile binaries for mingw platform using rake-compiler-dock"
+task 'build:mingw' do
+  require 'rake_compiler_dock'
+  RakeCompilerDock.sh "bundle && rake cross native gem RUBY_CC_VERSION=2.1.6:2.2.2:2.3.0:2.4.0"
+end
+
 RSpec::Core::RakeTask.new(:spec)
 
 task :default => :spec
+task spec: :compile