Re: Embedding SWIG bindings for multiple languages in a single executable

Thank you Alexey, I will look into your link. I cannot get rid of ruby
unfortunately as our entire ecosystem relies on them (for eg: we actually
support a Trimble sketchup plugin that makes use of these ruby bindings).
What I'm really trying to do is to *add* *python* support.

For the time being, I realized the problem was really for SwigDirector, so
in python I do %rename on the few classes for which I enabled the director
feature, which circumvents the issue (it's not great but it's a work around
for now). The next big thing I found was to just avoid including stl.i
(really just including std_vector.i which seems to be the guilty one),
that's unfortunate but it avoids problems.

My working MCVE of a static executable that embeds both python, ruby and
the respective swig bindings is at
https://github.com/jmarrec/Cpp_Swig_Ruby_Python_MCVE/tree/c+%2B-driver-try-ruby-static
if anyone is curious (comments welcome too)

Best,
Julien
--
Julien Marrec, EBCP, BPI MFBA
Owner at EffiBEM <http://www.effibem.com>
T: +33 6 95 14 42 13

LinkedIn (en <https://www.linkedin.com/in/julienmarrec>) *| *(fr
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Le mer. 23 juin 2021 à 13:44, Alexey Sokolov <[email protected]> a écrit :

> 07.05.2021 16:01, Julien Marrec пишет:
> > Hello,
> >
> > We have a C++ project, and are exporting ruby and python bindings.
> >
> > We wish to create a C++ CLI that embeds these bindings, so we can talk
> > to both python and ruby from C++. The goal is that users could write
> > small scripts in either ruby or python and they would be evaluated by
> > the C++ driver.
> >
> > The problem we are facing is that SWIG exports the same names for both
> > Ruby and Python, and when calling a *python* script at some point it
> > ends up calling the method from the *ruby* library instead.
> > The TYPES TABLES looks exactly the same on the ruby wrapper and the
> > python wrapper.
> > (I originally got another name clash with the `SwigDirector_T` but I'm
> > using a `#ifdef SWIGPYTHON; %rename("Python%s") "";` directive for the
> > time being)
> >
> > Is there a way to avoid this conflict? Perhaps adding a top-level
> > namespace, or renaming the mangled types?
> > I tried overriding the `%define mangle(Type)` macro, which worked for
> > stl types but not for my types since it's actually not using it (seems
> > like `typesys.c` harcodes it to `SWIGTYPE%s`).
> >
> > Has someone got an example of embedding SWIG bindings for two different
> > languages in the same executable? I realize this may not be your usual
> > use case scenario, but it's worth a shot :)
>
> ZNC embeds perl and python, so didn't have this specific issue. Those
> names don't clash.
> But the code is under modperl/ and modpython/ at
> https://github.com/znc/znc/tree/master/modules
>
> Can I suggest replacing ruby bindings with perl? :)
>
> >
> > Thank you,
> > Julien
> >
> >
> > PS: I asked a similar question in February
> > (https://sourceforge.net/p/swig/mailman/swig-user/?viewmonth=202102
> > <https://sourceforge.net/p/swig/mailman/swig-user/?viewmonth=202102>),
> > which was trying to use ruby to call python, but failing to do so I'm
> > exploring a C++ driver now
> > --
> > Julien Marrec, EBCP, BPI MFBA
> > Owner at EffiBEM <http://www.effibem.com>
> > T: +33 6 95 14 42 13
> >
> > LinkedIn (en <https://www.linkedin.com/in/julienmarrec>)/| /(fr
> > <https://fr.linkedin.com/in/julienmarrec/fr>) :
> > <http://www.linkedin.com/in/julienmarrec>
> >
> >
> > _______________________________________________
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> > [email protected]
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> >
>
>
> --
> Best regards,
> Alexey "DarthGandalf" Sokolov
>
>
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