Rakefile in rb-threadframe-0.39 vs Rakefile in rb-threadframe-0.40

@@ -12,11 +12,11 @@
 
 def gemspec
   @gemspec ||= eval(File.read(Gemspec_filename), binding, Gemspec_filename)
 end
 
-require 'rake/gempackagetask'
+require 'rubygems/package_task'
 desc "Build the gem"
 task :package=>:gem
 task :gem=>:gemspec do
   Dir.chdir(ROOT_DIR) do
     sh "gem build #{Gemspec_filename}"
@@ -30,15 +30,15 @@
   Dir.chdir(ROOT_DIR) do
     sh %{gem install --local pkg/#{gemspec.file_name}}
   end
 end
 
-desc 'Create the core thread-frame shared library extension'
+desc 'Create the thread-frame shared library extension'
 task :ext do
   Dir.chdir('ext') do
     system("#{Gem.ruby} extconf.rb && make")
-  end
+  end if '1.9.2' == RUBY_VERSION
 end
 
 desc 'Remove built files'
 task :clean do
   Dir.chdir File.join(ROOT_DIR, 'ext') do
@@ -108,10 +108,10 @@
 task :gemspec do
   gemspec.validate
 end
 
 # ---------  RDoc Documentation ------
-require 'rake/rdoctask'
+require 'rdoc/task'
 desc "Generate rdoc documentation"
 Rake::RDocTask.new("rdoc") do |rdoc|
   rdoc.rdoc_dir = 'doc'
   rdoc.title    = 'rb-threadframe'
   # Make the readme file the start page for the generated html