Wayne,
Got this while attempting to update to 1.0.10
due to 'ffi.h' not being found with current 'extconf.rb' setup.
While I can likely hack around with something like `--with-ffi_c-dir` I think a binary gem would be better. Will you be making a binary gem available or is the plan that we should be building from source for 1.0.10+?
Sorry I'm running all-out today and can't look into Win7 and what's hopefully a simple `extconf.rb` (or other) patch.
Jon