Issue #2484 has been updated by Luis Lavena. Apologies, found the link on ticket #2464. Reading at that page and checking the history, seems you adapted it just now ;-) The funny thing is that 1.8.6 can still cross compile 1.9.2dev. Looks like I have no choice than indicate the break of this feature to the users of rake-compiler tool. ---------------------------------------- http://redmine.ruby-lang.org/issues/show/2484 ---------------------------------------- http://redmine.ruby-lang.org