27.1.5 Exporting a Scheme variable

A Scheme variable (or function) can be exported to the foreign world if and only if it is also exported using an export clause. Type information is given in the Scheme exportation, thus, the only requirement for a variable to be extern exported is to be given a foreign name. The foreign <export-clause> does this:

<export-clause> → (export <ident> <string>)

Here is an example of exportation:

(module example
   (export (fib::long ::long))
   (extern (export fib "scheme_fib")))

(define (fib x) (if (< x 2) 1 ...))

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