Rakefile in posix-mqueue-0.0.3 vs Rakefile in posix-mqueue-0.0.4

@@ -1,7 +1,8 @@
 require "bundler/gem_tasks"
 
 require 'rake/testtask'
 Rake::TestTask.new do |t|
+  `cd ext/posix && ruby extconf.rb && make`
   t.libs << "test"
   t.pattern = "test/**/*_test.rb"
 end