Re: [Chicken-users] foreign-lambda*

[felix winkelmann]

You can overcome the 126 argument-limit by using the currrent
darcs version of Chicken. You need libffi installed and configure
with --enable-libffi. This allows you up to 1000 arguments.


cheers,
felix


On Wed, 02 Feb 2005 09:06:22 -0800 (PST), Nicolas Pelletier
<address@hidden> wrote:
> felix winkelmann <address@hidden> writes:
> 
> >
> > Oh, just in case: if the computed string can be created at compile-time,
> > you can of course use a macro that subsequently expands into
> > a foreign-lambda*. But if you create the code at run-time, then of course
> > an embedded C-compiler is needed.
> 
> Yes, and I  tried to remain on the compile-time side  of things. But I
> would  then have some  foreign-lambda* procedures  with more  than 126
> parameters, breaking the  limit. So I end up  hardcoding values inside
> the C body of the foreign-lambda*, and these values come from run-time
> parameters to my Scheme code...
> 
> The  reason  I can  break  the  126 parameters  limit  is  I am  using
> foreign-lambda* to fill  in huge C structures, some  of them including
> big tables of other structures...  and every field therein must get an
> init value.
> 
> And this  stacking of structures  of structures of tables  of whatever
> makes foreign-parse choke (It needs more C preprocessing than what the
> easy FFI currently provides).
> 
> The above  may sound  a bit sad,  but the  truth is chicken  is really
> helping me.
> 
> --
> Nicolas
> 
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