Depending from your configuration, gnutls and/or openssl libraries may be required as well.
Yeah. It kind of sucks that it's not more explicit about thouse requirements, it would have saved me an hour or so that I spend poking into my system trying to make it work. I used ltrace, and because ltrace doesn't handle tracing calls done from DSOs, I know it's the binary itself that's making those dlopens. I don't know if that binary is Amanita's doing, or Adobe, or whoever, so I'm unclear as to where exactly to put the blame.
Anyway. Glad I could make it work, the game is well worth it.