# File src/ruby_supportlib/phusion_passenger/platform_info/ruby.rb, line 144
    def self.ruby_supports_fork?
      # MRI >= 1.9.2's respond_to? returns false for methods
      # that are not implemented.
      return Process.respond_to?(:fork) &&
        RUBY_ENGINE != "jruby" &&
        RUBY_ENGINE != "macruby" &&
        rb_config['target_os'] !~ /mswin|windows|mingw/
    end