Rakefile in pycall-1.3.1 vs Rakefile in pycall-1.4.0

@@ -1,31 +1,93 @@
-require "bundler"
-Bundler::GemHelper.install_tasks
+require "bundler/gem_helper"
+require "rake/clean"
 
-require "rake"
-require "rake/extensiontask"
-require "rspec/core/rake_task"
+base_dir = File.join(File.dirname(__FILE__))
 
+helper = Bundler::GemHelper.new(base_dir)
+helper.install
+spec = helper.gemspec
+
+def run_extconf(build_dir, extension_dir, *arguments)
+  cd(build_dir) do
+    ruby(File.join(extension_dir, "extconf.rb"), *arguments)
+  end
+end
+
+def make_command
+  if RUBY_PLATFORM =~ /mswin/
+    "nmake"
+  else
+    ENV["MAKE"] || find_make
+  end
+end
+
+def find_make
+  candidates = ["gmake", "make"]
+  paths = ENV.fetch("PATH", "").split(File::PATH_SEPARATOR)
+  exeext = RbConfig::CONFIG["EXEEXT"]
+  candidates.each do |candidate|
+    paths.each do |path|
+      cmd = File.join(path, "#{candidate}#{exeext}")
+      return cmd if File.executable?(cmd)
+    end
+  end
+end
+
 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]
+spec.extensions.each do |extension|
+  extension_dir = File.join(base_dir, File.dirname(extension))
+  build_dir = ENV["BUILD_DIR"]
+  if build_dir
+    build_dir = File.join(build_dir, "pycall")
+    directory build_dir
+  else
+    build_dir = extension_dir
   end
+
+  makefile = File.join(build_dir, "Makefile")
+  file makefile => build_dir do
+    run_extconf(build_dir, extension_dir)
+  end
+
+  CLOBBER << makefile
+  CLOBBER << File.join(build_dir, "mkmf.log")
+
+  desc "Configure"
+  task configure: makefile
+
+  desc "Compile"
+  task compile: makefile do
+    cd(build_dir) do
+      sh(make_command)
+    end
+  end
+
+  task :clean do
+    cd(build_dir) do
+      sh(make_command, "clean") if File.exist?("Makefile")
+    end
+  end
 end
 
-Rake::ExtensionTask.new('pycall/spec_helper')
+require "rake/extensiontask"
+Rake::ExtensionTask.new("pycall/spec_helper")
 
-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"
+desc "Run tests"
+task :test do
+  cd(base_dir) do
+    ruby("test/run-test.rb")
+  end
 end
 
-RSpec::Core::RakeTask.new(:spec)
+task default: :test
 
-task :default => :spec
+require "rspec/core/rake_task"
+RSpec::Core::RakeTask.new(:spec) do |t|
+  ext_dir = File.join(base_dir, "ext/pycall")
+  t.ruby_opts = "-I#{ext_dir}"
+  t.verbose = true
+end
+
+task default: :spec
 task spec: :compile