Hi,
I've been compiling macruby from source, svn with tag 0.4
One observation I made is that if there's a different bison in my path, such as the one from macports in /opt/local/bin/bison, then macruby will not compile.
In Rakefile, bison is hardcoded to /usr/bin/bison
In the generated ext/ripper/Makefile however, bison is simply the bison from the environment.
It seems the real fix should be that the generated Makefile should also be hardcoded to use /usr/bin/bison, as opposed to me changing my path.
-d