Solving Cross-Platform CGO Builds with Zig and Dagger
Blog post from Paper Compute Company
Cross-compiling Go programs becomes complex when involving CGO, due to challenges with headers and platform-specific toolchains, but a solution was found for building binaries for Linux and macOS using Zig and Dagger. Zig simplifies the process by acting as a universal C/C++ cross-compiler that eliminates the need for multiple toolchains, allowing Go to compile seamlessly across different architectures. Dagger, a container-based CI tool, enhances build reproducibility by using Go for pipeline definitions, allowing consistent builds across environments. However, for macOS targets, osxcross is required to package the necessary macOS SDK on Linux, as Zig alone cannot solve this due to Apple's restrictions. This approach results in a streamlined and reproducible build process that consolidates what was once a complex setup into a unified solution.
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