I was able to get the mongrel gem installed in JRuby by first compiling it with MRI but specifying java:
$ svn co http://mongrel.rubyforge.org/svn/trunk mongrel $ cd mongrel $ rake package java then in JRuby $ cd mongrel/pkg $ gem install mongrel-1.1.2-java.gem Successfully installed mongrel-1.1.2 1 gem installed Installing ri documentation for mongrel-1.1.2... Installing RDoc documentation for mongrel-1.1.2... _______________________________________________ Mongrel-users mailing list Mongrel-users@rubyforge.org http://rubyforge.org/mailman/listinfo/mongrel-users