Proposed blog post: Improving the usability of C libraries in Swift #1255
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DougGregor
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a team,
davelester,
shahmishal,
timsneath and
tkremenek
as code owners
finagolfin
reviewed
Dec 7, 2025
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| There are many interesting, useful, and fun C libraries in the software ecosystem. While one could go and rewrite these libraries in Swift, usually there is no need, because Swift provides direct interoperability with C. With a little setup, you can directly use existing C libraries from your Swift code. | ||
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| When you use a C library directly from Swift, it will look and feel similar to using it from C. That can be useful if you're following sample code or a tutorial written in C, but it can also feel out-of-place. For example, here's a small amount of code using a C API: |
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| When you use a C library directly from Swift, it will look and feel similar to using it from C. That can be useful if you're following sample code or a tutorial written in C, but it can also feel out-of-place. For example, here's a small amount of code using a C API: | |
| When you use a C library directly from Swift, it will look and feel similar to using it from C. That can be useful if you're following sample code or a tutorial written in C, but it can also feel out of place. For example, here's a small amount of code using a C API: |
finagolfin
reviewed
Dec 7, 2025
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| "compilerVersion": "Apple Swift version 6.2 (swiftlang-6.2.2.15.4 clang-1700.3.15.2)", | ||
| "target": { | ||
| "triple": "arm64-apple-macosx15.0", |
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This doesn't match the triple you used above, ie arm64-apple-macos14.
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Here is a draft blog post on improving the usability of C libraries in Swift using header annotations or API notes. I use the WebGPU headers as an example.