[Ecls-list] Accessing C variables

[Goffioul Michael]

> Learning the FFI will save you a lot of time. The alternative, to code
> by hand all functions to access and manipulate the C/C++ code, is
> doable, but hairy, as you will need to deal with ECL's internal notion
> of foreign data, which is not yet well documented.

Indeed, regarding my last mail, you should use def-foreign-var to access
C variables instead of ECL-specific ecl_make_foreign_data.

Michael.