The win32-open3 package is not part of the one-click installer. If you
don’t have a compiler, you can instead download the shared object
directly from the ‘files’ tab (http://rubyforge.org/frs/?group_id=85)
and look for a file called open3-0.2.2
Rename that file to “open3.so”. Then copy it to
c:\ruby\lib\ruby\site_ruby\1.8\i386-msvcrt\win32. You’ll have to
create the ‘win32’ directory there if it doesn’t already exist.
Note that we’ll be putting out a new release of win32-open3 soon (in the
next few weeks) that properly sets $? (Process::Status).
And, for anyone who’s wondering, we won’t be able to convert this
particular package to pure Ruby because it has to hook into C functions
from ruby_io.h that aren’t exported by the DLL. Sorry folks.