Hi,
there is currently no C binding available and it's not planned at the
moment. The problem is that API sometimes changes and having bindings
means more work when the change is necessary. I don't know how FFI
works, but core part of Fog is written using "C-like" low-level
interface using CDECL calling convention, but C++ compiler is needed
to reference these functions in your code.
This C low-level interface was designed for programming languages
which can call C functions, but if FFI needs symbol lookup, it will be
hard to wrap.
There is planned V8 bindings for testing, but the work didn't start yet.
Best regards
Petr