On Thu, Apr 16, 2009 at 8:32 PM, James Gray <james / grayproductions.net> wrote: ows. > > One easy way is just to install 1.9 separate from your 1.8 install. ¨Âïõ ãá> do that by feeding the configure script a --program-suffix=19 option which > would add a 19 to the end of all the executables it installs. ¨Âèõùï> would use ruby19, irb19, etc. OMG why did I not ask you, or err, reading ./configure --help a little bit more carefully, before installing!!!! This avoids probably the kind of compatibility problems I ran into. Juan, by all means, follow James' approach if you cannot go with JRuby. R.