Zig Makes Rust Cross-compilation Just Work

This post is a spiritual successor to Loris Cro’s Go cross-compilation.

The encounter

During a recent stage 2 meeting Jakub Konka wanted to demo his progress on WASM support, but ran into problems with screen-sharing on Linux. After switching to his Mac to run it there, he found out that Wasmtime (a WASM runtime) doesn’t ship aarch64-macos pre-built binaries.

But Wasmtime is an open-source Rust project, I should be able to clone the repoand build it for Jakub myself. The problem? I don’t have an M1 Mac on hand. I will have to cross-compile.

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