Rakefile in pycall-1.0.3 vs Rakefile in pycall-1.1.0.rc1

@@ -15,9 +15,11 @@
   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
 
+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"
 end