Re: ffi-helper: looking for C libraries to try

[Amirouche]

Le 15/07/2017 à 01:17, Matt Wette a écrit :
> Hi All,
>
> I am working on a ffi-helper: a program that will read in a C dot-h file and 
> generate a Guile dot-scm file which
> defines a module to provide hooks into the associated C library.  My goal is to 
> have something to release ~Oct 2017.
>
> I am looking for suggestions for libraries (w/ includes of course) to use as 
> test cases to flush-out and debug my code.  I have worked on cairo and now 
> working on gdbm.  I tried git2 but those headers are too broken.
>
> If you have suggestions for test cases, please post.  They should be commonly 
> used.
> (I use MacPorts and would want them to be installable in that context.)
>
> Status:
>
> I have now been able to compile-ffi the following on my Mac. I’m sure bugs 
> remain.
>
> (define-ffi-module (cairo cairo)
>   #:pkg-config "cairo"
>   #:include '(“cairo.h" "cairo-pdf.h" "cairo-svg.h")
>
>   ;; the following are bent pipe to scm-module
>   #:export (make-cairo-unit-matrix)
>   )
>
> (define (make-cairo-unit-matrix)
>   (make-cairo_matrix_t #(1.0 0.0 0.0 1.0 0.0 0.0)))
>
> I convert the above “cairo.ffi” file to “cairo.scm” using the following command
>
>         mwette$ guild compile-ffi cairo/cairo.ffi

Can you provide guidance regarding how to run compile-ffi, here what 
I've done so far:

$ git clone https://git.savannah.nongnu.org/git/nyacc.git
$ cd nyacc
$ git checkout c99dev
$ cd examples/nyacc/lang/c99
$ source env.sh

Then:

$ guild compile-ffi cairo/cairo.ffi

;;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0
;;;       or pass the --no-auto-compile argument to disable.
;;; compiling /home/amirouche/.guix-profile/bin/guild
;;; compiled 
/home/amirouche/.cache/guile/ccache/2.2-LE-8-3.A/gnu/store/1pzfigry5bnh3n146w0ib77vkd2g6jdc-guile-2.2.2/bin/guild.go
guild: unknown script "compile-ffi"
Try `guild help' for more information.

I have guile-bytestructures

Thanks!