How to create an Objective C Library Wrapper

General Usage
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I want to write a wrapper for an Objective C library (Syphon Framework). I am not sure how to proceed and which packages to use.
I did build the library in my directory for testing. But I am not sure how to proceed, as I think Clang only works properly with C. And it demands to include .Frameworks, which is too big and makes everything fail.
I am happy for any tips how I could proceed. Thanks!

PS: I rephrased my question from a few days ago, to make it more general.

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Julia can only directly call C functions, so you will first need to wrap C wrapper functions (written and compiled using Objective C) around the API you want to access, like what Apple did with the CoreFoundation library. Once you have a C API, compiled into a shared library, it is straightforward to call from Julia.

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Shouldn’t you use ObjectiveC.jl?

While technically true, isn’t that other package not to avoid that or automate?

It works on macOS including version 26 seemingly (Normalize macOS version by christiangnrd · Pull Request #61 · JuliaInterop/ObjectiveC.jl · GitHub), tested on macOS; [not iOS, since if you want to support iOS/iPadOS then not possible currently to support…]

I neither think you expect this to work on Windows or Linux…

[Another thing this is a (real-time) framework as in “don’t call us, we call you”. I’m not sure a problem. You call it as a library, and it will work by still calling you? I’m not to worried about the real-time part of it. Likely will just work (and is soft-realtime).

Do you know if anything similar works on Linux or could be cross-platform to all (relevant/desktop) platforms, including macOS? At least if you run into any trouble with (with the package and) Syphon/frameworks.]

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Oh, right, I forgot about this package. It looks like it works by calling the Objective-C Runtime library directly, which is possible since that low-level API is apparently written in C.

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yes i only need macos (as it is a macos only library).

so i am not sure now how one would call compiled objc code. how do i include this in my file?

if you are aware of a simple wrapper package, where i could check how this works, this would be great.
Metal.jl is a bit big as a first easy example.

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You can look up dependents for packages e.g. JuliaHub

I see only one other (registered) dependent package (plus three indirect, click above in case it may help, to see them) in case it helps MacOSIOReport.jl but I haven’t used ObjectiveC.jl myself (nor do I use a mac).

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