Open Source C/C++ Truffle languages available?

[Gerard Krol]

Hi,

I've recently learned about Tuffle/Graal. It seems great technology.

I'm interested in running C++ code on the JVM, without resorting to the
(admittedly clever) Sulong hack. I've seen some presentations and read some
papers about a C implementation, but that one doesn't seem to be open
source. The same goes for the C extensions for JRuby. Is that correct?

If so, what are the reasons for not open sourcing it? Any plans to do so in
the future?

Regards,

Gerard