extconf.rb in cassandra-0.19.0

- old
+ new

@@ -1,5 +1,5 @@
-if defined?(RUBY_ENGINE) && RUBY_ENGINE =~ /jruby/
+if (defined?(RUBY_ENGINE) && RUBY_ENGINE =~ /jruby/) or ENV['OS'] == "Windows_NT"
   File.open('Makefile', 'w'){|f| f.puts "all:\n\ninstall:\n" }
 else
   require 'mkmf'
 
   $CFLAGS = "-g -O2 -Wall -Werror"