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As long as we're throwing ideas around: I think it would be cool to have a foreign function interface that could work both dynamically, by calling functions using libffi, and statically, by generating stubs. Then you could hack around in dynamic mode, and then flip a switch and generate C code for speed, or simplicity of distribution. > Yep, but my machine is already fast enough that performance isn't an > issue any more (since the main hit is in initialization), and it's two > years old. Are you sure? libffi does stuff at run-time, on every function call. I would guess that whether the overhead is negligible depends on how heavily you're calling the foreign functions.