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Re: Integrate Guile with GNU Scientific Library

From: Todor Kondić
Subject: Re: Integrate Guile with GNU Scientific Library
Date: Fri, 04 Oct 2019 14:32:16 +0000

On 4 Oct 2019, 03:10, Matt Wette < address@hidden> wrote:

On 10/3/19 12:28 AM, Freeduck via General Guile related discussions wrote:

> Hi All,


> I am trying to integrate Guile with a part of GNU Scientific Library and have 
> found SWIG, which seems very easy to use, but only supports Guile 2.0. I have 
> Guile 2.2 installed.

> The Guile homepage has a tutorial on integrating Guile into C, and the manual 
> has a section on dynamic ffi, but it I find it hard to get started, maybe it 
> is just lack of experience.


> My main problem is not integrating with GSL, but doing polynomial regression. 
> I have been working in Racket for a while which has allot of maths 
> integrated. Is there something like numpy/scipy for Guile.


> Kind regards


> Kristian


> Sent with [ProtonMail]( Secure Email.

The FFI Helper in nyacc (

provides the functionality of swig.  You can try that.  I'd be

interested in how you like that compared to swig.

A quick hack to see if I could get it to work for gsl failed:

$ cat gsl-sort.ffi

(define-ffi-module (gsl-sort)

  #:pkg-config "gsl"

  #:include '("gsl/gsl_sort.h"))

$ guild compile-ffi gsl-sort.ffi


ERROR: In procedure dynamic-link:

In procedure dynamic-link: file: "libm", message: "file not found"

So for some reason the linker is not finding on my Unbuntu.

I will need to look into that.

You can check the examples in examples/nyacc/lang/ffi-help.

First, sorry if I'm messing up bottom posting and formatting ... I'm responding 
using a non-free mobile phone app :)

Second, the answer might be totally off-topic, but I always found it easier to 
generate math programs by Guile and then compile them, then a full, seamless 
library level integration into a Guile program itself. See, e.g.

for a naive implementation of fortran wrappers and compiler helpers in Guile. 
It is naive, but I managed to do a lot of sophisticated linear algebra with it.

Anyway, good luck :) .


PS also in mine previous experiences when trying to link stuff using ffi, 
looking at the symbols in libraries directly helped.

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