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Consuming D libraries from other languages
Jun 15, 2022
Templated Person
Jun 15, 2022
Guillaume Piolat
Jun 15, 2022
Guillaume Piolat
Jun 15, 2022
Ali Çehreli
Jun 16, 2022
mw
June 15, 2022
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It there any resources on how to build D static (.lib / .a) and dynamic libraries (.dll / .so), and then use them from C?

Do I need to link and initialize phobos somehow? What if I don't want to use the D runtime? What happens with module level this() and ~this()? Is there a comprehensive guide on how to do this stuff?

June 15, 2022
Gravatar of Guillaume PiolatPosted by Guillaume Piolat
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On Wednesday, 15 June 2022 at 17:37:32 UTC, Templated Person wrote:

>

It there any resources on how to build D static (.lib / .a) and dynamic libraries (.dll / .so), and then use them from C?

Do I need to link and initialize phobos somehow? What if I don't want to use the D runtime? What happens with module level this() and ~this()? Is there a comprehensive guide on how to do this stuff?

What I would suggest is to look at a few of the BindBC libraries and mimic them.
https://code.dlang.org/search?q=bindbc

BindBC bindings are multi-platform and can be both static and dynamic linking.
They can also work without a D runtime.

June 15, 2022
Gravatar of Guillaume PiolatPosted by Guillaume Piolat
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On Wednesday, 15 June 2022 at 19:36:34 UTC, Guillaume Piolat wrote:

>

BindBC bindings are multi-platform and can be both static and dynamic linking.

My bad I understood the reverse, consuming C libraries from D.
I think what you are seeking is described in the D blog.

June 15, 2022
Gravatar of Ali ÇehreliPosted by Ali Çehreli
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On 6/15/22 10:37, Templated Person wrote:
> It there any resources on how to build D static (`.lib` / `.a`) and
> dynamic libraries (`.dll` / `.so`), and then use them from C?
>
> Do I need to link and initialize phobos somehow?

Not Phobos but the D runtime.

> What if I don't want to
> use the D runtime? What happens with module level `this()` and
> `~this()`?

I had difficulty figuring out how everything fit together in a complicated scenario. (Different language runtimes calling each other and starting the D library.) However the following worked.

> Is there a comprehensive guide on how to do this stuff?

I gave a DConf presentation that answers some of your questions:

  https://dconf.org/2020/online/

Please click the 'November 22' tab on that page to expand "Exposing a D Library to Python Through a C API". But here are the links:

Slides: https://dconf.org/2020/online/slides/ali-2.pdf

Video: https://youtu.be/FNL-CPX4EuM

Q&A: https://youtu.be/M5wtRgfAoAA

Ali
June 16, 2022
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On Wednesday, 15 June 2022 at 17:37:32 UTC, Templated Person wrote:

>

It there any resources on how to build D static (.lib / .a) and dynamic libraries (.dll / .so), and then use them from C?

Do I need to link and initialize phobos somehow? What if I don't want to use the D runtime? What happens with module level this() and ~this()? Is there a comprehensive guide on how to do this stuff?

Check:

https://code.dlang.org/packages/autowrap

And examples such as c#, Python here:

https://github.com/symmetryinvestments/autowrap/tree/master/examples