[Haskell-cafe] global variables for foreign C functions

[Evan Laforge]

On Mon, Dec 1, 2008 at 4:39 PM, Andrea Rossato
<mailing_list at istitutocolli.org> wrote:
> Hello,
>
> I'm writing the bindings to a C library which uses, in some functions,
> global variables.
>
> To make it clearer, those functions need a global variable to be
> defined. A C program using my_function, one of the library functions,
> would look like:

I don't think you can use the FFI to declare symbols for C.  One
not-so-pretty but effective way to do it is create a stub.c with the
variables declared along with setting functions, then bind those
functions like any other.