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zig-cinterop

Use when Zig code calls C or C code calls Zig: @cImport, translate-c, C type mapping, extern and packed structs, export fn, opaque handles, or a mixed C and Zig build. Not for Rust FFI: use rust-ffi.

.devin/skills/zig-cinterop/SKILL.md

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Nov 4, 2026

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Sep 28, 2026
License
Apache-2.0

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# Zig C interop

## Contract

| Field | Bound contract |
|---|---|
| Trigger | The user calls a C function from Zig, exposes a Zig function to C, needs a struct that matches a C layout, wants to see how a C header translates, or builds a project that mixes C and Zig sources. |
| Authority | Read-only. The skill emits Zig declarations, `build.zig` lines, and `translate-c` commands to chat; the user writes them. Rollback is not needed. No remote mutation. |
| Side effect | Chat output; `translate-c` output goes where the user redirects it. |
| Done | The declarations and build lines for the request are reported, they compile against libc on the installed Zig in a scratch file, and every C type in the request has its Zig mapping. |

## Inputs

- Zig version from `zig version`: required. The samples ran on Zig 0.14.1.