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Bug#1065597: racket: Inclusion of mzdyn.o in the binary package

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  Bug#1065597: racket: Inclusion of mzdyn.o in the binary package Rafael Laboissière <rafael@debian.org> - 2024-03-07 09:30 +0100
    Bug#1065597: racket: Inclusion of mzdyn.o in the binary package David Bremner <david@tethera.net> - 2024-03-07 15:00 +0100
    Bug#1065597: racket: Inclusion of mzdyn.o in the binary package David Bremner <david@tethera.net> - 2024-03-09 01:30 +0100
      Bug#1065597: racket: Inclusion of mzdyn.o in the binary package Rafael Laboissière <rafael@debian.org> - 2024-03-09 17:10 +0100

#1189350 — Bug#1065597: racket: Inclusion of mzdyn.o in the binary package

Package: racket
Version: 8.10+dfsg1-2
Severity: wishlist

Dear Maintainer,

We are updating the Debian package for SWIG (a generator of scripting 
interfaces to C/C++ code), in order to include support for 
MzScheme/Racket.

However, it does not work because the file mzdyn.o is needed and 
cannot be found anywhere. Indeed, this file is mentioned in the Racket 
documentation.[*]

The SWIG's configure script try to find the path for that file by 
running this command:

    mzscheme --eval '(begin (require dynext/link) (with-handlers (((lambda args #t) (lambda args #f))) (for-each (lambda (x) (printf "~a" x)) (expand-for-link-variant (current-standard-link-libraries)))))'

which yields:

    /usr/lib/racket/mzdyn.o

Subsequently, the activation of the MzScheme support fails because this 
path does not exist.

I see that, in the source for the Debian package racket, there is a 
file src/bc/dynsrc/mzdyn.c, that could be compiled into mzdyn.o and 
installed in /usr/lib/racket/.

Do you think that this would be possible?

Best,

Rafael Laboissière

[*] https://docs.racket-lang.org/inside/Writing_Racket_Extensions.html#(part._.C.G.C_.Extensions)

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#1189375

Rafael Laboissière <rafael@debian.org> writes:

>
> However, it does not work because the file mzdyn.o is needed and 
> cannot be found anywhere. Indeed, this file is mentioned in the Racket 
> documentation.[*]
>

My knowledge here is incomplete, and I'd be happy to be corrected, but:

I think that documentation relates to the old "bc" backend of racket.
For most architectures we are using the new "cs" backend (and will
possibly migrate the remaining architectures).  So it may not be
possible to do the same kind of linking as was done with the old
backend.

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#1189503

Rafael Laboissière <rafael@debian.org> writes:

> At any rate, I wonder why the following mzscheme code:
>
>      (begin
>       (require dynext/link)
>       (with-handlers
>        (((lambda args #t) (lambda args #f)))
>        (for-each (lambda (x) (printf "~a" x))
>                  (expand-for-link-variant (current-standard-link-libraries)))))
>

I'm not sure what will come of it, but I have reported this issue as

    https://github.com/racket/cext-lib/issues/4

I haven't marked this Debian bug as forwarded as I believe they are
different bugs.

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#1189566

* David Bremner <david@tethera.net> [2024-03-08 20:23]:

> Rafael Laboissière <rafael@debian.org> writes:
>
>> At any rate, I wonder why the following mzscheme code:
>>
>>      (begin
>>       (require dynext/link)
>>       (with-handlers
>>        (((lambda args #t) (lambda args #f)))
>>        (for-each (lambda (x) (printf "~a" x))
>>                  (expand-for-link-variant (current-standard-link-libraries)))))
>>
>
> I'm not sure what will come of it, but I have reported this issue as
>
>    https://github.com/racket/cext-lib/issues/4

Great, thanks !

I have already added a comment to that issue.

> I haven't marked this Debian bug as forwarded as I believe they are 
> different bugs.

Indeed, these are different, although interrelated, bugs.

Best,

Rafael

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