Hi,

It looks like it's not possible to build ext/openssl outside of ruby
itself because ossl.c includes thread_native.h:

  https://github.com/ruby/ruby/blob/8cacc6459067340d5ce76e017d0891162c0f31ef/ext/openssl/ossl.c#L469-L480

@ko1, @emboss is there a way to do this without relying on Ruby
internals?

Thanks!

-- 
Aaron Patterson
http://tenderlovemaking.com/