Re: [Chicken-users] Complaining as ordered: pre-declare-external?

[Alex Queiroz]

Hallo,

On 7/8/07, Robin Lee Powell <address@hidden> wrote:
> (I was ordered to complain by the Cowan)
>
> I have code that calls (with easyffi) a C library function.  One
> argument is a function.  I've defined, with define-external, the
> scheme function play.  I pass a pointer to play to the C library
> function with (location play).  This breaks if play is not defined
> on the same Scheme source file as the C library function call.
>
> I'll let jcowan speak to the details, as I don't get it.
>
>     18:17 < jcowan> You need (location play) because that's the only
>     way to pass a C pointer to a function (afaik)

    I don't know if this applies to the easyFFI, but one can use the
functions defined with (define-external) in (foreign-lambda*) bodies,
which have been useful to me.

Cheers,
--
-alex
http://www.ventonegro.org/