[GSLL-devel] grid, foreign-array, fsbv and libffi

[Mirko Vukovic]

Just checking:

Does this (loading fsbv's only pkgdlc.lisp & convert.lisp) mean that
foreign arrays are unavailable
to grid (and gsll)?

I implemented these compilation suggestions to the latest releases of
fsbv and gsd, on clisp and cygwin
and foreign arrays don't work:
(grid:map-grid :source #'(lambda (i j)
			   (+ i j))
	       :destination-specification '((foreign-array 2 2) double-float))

while natives do:
(grid:map-grid :source #'(lambda (i j)
			   (+ i j))
	       :destination-specification '((array 2 2) double-float))

I ask because today I tried to revive gsll on cygwin 1.7 after a long
break.  I had compilation errors
related to foreign-arrays and complex-float-c.

I am not in a rush to compile gsll on cygwin/clisp  since I do have it
going nicely on sbcl.  I can wait
for the reimplementation of fsbv that Liam was talking about.

Mirko
On Tue, Nov 30, 2010 at 12:38 PM, Liam Healy <lhealy at common-lisp.net> wrote:
> Yes.
>
... stuff deleted
>
> I hope the explanation is clear.  To answer your specific question:
> I've pushed a new version of FSBV; in that version, you only have to
> load pkgdcl.lisp and convert.lisp, and you won't need libffi.  Sorry
> for the awkward state; for the time being FSBV is mandatory, but I'm
> hoping that goes away in the not-too-distant future.  I didn't make a
> separate branch because it does work as-is, and I figured most people
> were getting these systems via quicklisp, which already installs the
> entire FSBV.
>
> Liam
>
> On Tue, Nov 30, 2010 at 11:58 AM, Sumant Oemrawsingh <soemraws at xs4all.nl> wrote:
>> Hi Liam,
>>
>> Recently, I tried getting foreign-array working on windows (with
>> sbcl). I noticed that foreign-array uses fsbv (apparently) and fsbv
>> uses libffi. I haven't dug around in the code yet, but I was wondering
>> if you have a quick explanation why libffi is used, and why cffi is
>> not sufficient. The reason I ask is because I'm wondering if it would
>> be possible to hack it under windows so it doesn't need libffi (which
>> apparently is quite difficult to get working there).
>>
>> Thanks,
>> Sumant
>>
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