Re: [Chicken-users] Trouble with FFI and 64 bit machines

[Stephen Eilert]

On Fri, Oct 8, 2010 at 3:58 PM, Peter Bex <address@hidden> wrote:
>
> I'm not sure if that's the problem with your egg, but this results in a
> compiler warning because there's no prototype for that function, so
> C assumes the return value's type is 'int', which is indeed a different
> size than void * on x86_64.
>
> Adding (foreign-declare "void *mkd_in(void *, int);") in front of that
> code causes it to compile without warnings.
>
> Perhaps you should figure out whether the header file is being included
> properly.  Maybe you can temporarily put a "#error hi" just before the
> function's prototype in the header file, so you can see if it's not
> skipping the prototype due to a #ifdef or something equally silly.

The reason was something even more silly: I was not including the
header file at all. Turning on -Wall reveals that yes, the prototype
was missing. GCC is appeased now.

I'll test it on OSX later, but it is likely that this will fix the problem.

Thanks,


--Stephen

Sent from my Emacs