Build
QEMU emulation
Quick answer
QEMU emulation runs binaries compiled for one CPU architecture on a machine with a different one, by interpreting instructions in software.
QEMU emulation runs binaries compiled for one CPU architecture on a machine with a different one, by interpreting instructions in software.
Why it matters
It makes multi-arch builds possible on a single runner and makes them extremely slow. Anything that compiles will run 5–40× slower under emulation.
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Related
Cross-compilationCross-compilation is building a binary on one architecture that is intended to run on a different one.Incremental buildAn incremental build recompiles only the parts of a project affected by a change, reusing previously built outputs for everything else.MonorepoA monorepo is a single repository containing multiple projects or packages that are versioned and built together.Remote executionRemote execution distributes individual build actions across a fleet of workers rather than running them all on one machine.