[Chicken-users] Re: syntax-case macros as extensions?

[felix winkelmann]

On 3/8/07, Raffael Cavallaro <address@hidden> wrote:
> On Mar 8, 2007, at 5:28 AM, felix winkelmann wrote:
>
> >  Then you have to
> > make those macros available at _compile-time_, or the
> > compiler will not see them. "(require ...)" loads code at run-time,
> > not at compile-time. Try "require-for-syntax".
>
> A somewhat related question: I have some macros that are defined with
> define-syntax using the syntax-case extension. I can't seem to make
> these macros into an extension that is usable at runtime in csi. I
> can load the .scm file just fine, and then the macros work in csi,
> but If I try to compile these into an extension, when I load it I get
> unbound variable errors.

Syntax-case macros can not be compiled.

To create an extension that provides syntax-case macros, just
create the Scheme source file with the macros, perhaps add
a "(require-extension syntax-case)" at the start of it and install
it like this:

(install-extension
 'dotimes
 '("dotimes.scm")
 '((syntax)))  ; use require-at-runtime if the macros need support
code at runtime


cheers,
felix