kennethlove

/usr/local/Cellar/ruby/1.9.3-p125/bin/ruby extconf.rb
extconf.rb:6: Use RbConfig instead of obsolete and deprecated Config.
checking for ffi.h in /usr/local/include... no
checking for rb_thread_blocking_region()... yes
creating extconf.h
creating Makefile

make
Configuring libffi
cd /usr/local/lib/ruby/gems/1.9.1/gems/ffi-0.6.3/ext/ffi_c/libffi && make