continuwuity/docker
Morgan 7e979882bd
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ci: Compile arm64 natively on the ubuntu-arm64 runner
The arm64 build cross-compiled with the Rust target triple inside an
amd64 container and copied the binary out, deliberately avoiding Docker
emulation because arm64 emulation is unreliable on some BuildKit
instances.

A dedicated Ubuntu VM on an M4 Mac Mini is now available under the
ubuntu-arm64 label. Each matrix entry carries its own runner label and a
native flag, so builds can be moved between runners or between build
modes without changing the workflow structure.

Where native is set, the build-native action compiles on the host and
assembles the artefact tree, leaving Docker to package it. It builds
into a target directory outside the per-run workspace so cargo can reuse
artefacts between runs. The Dockerfile's ARTIFACTS argument selects
whether artefacts come from the builder stage or from out/ in the build
context; prepper and the final image are unchanged. Libraries are
resolved where the binary was linked, so arm64 images carry Ubuntu's
rather than Debian's.

Architecture flags are split into TARGET_MARCH, which feeds -march for
the C and C++ compilers, and TARGET_RUSTFLAGS, which is appended to
RUSTFLAGS. amd64 passes haswell to both as before; arm64 passes +crc,
which rustc does not enable by default. TARGET_CPU still drives the tag
and artefact suffix.
2026-08-20 15:58:34 +00:00
..
complement.Dockerfile fix: Complement runner 2026-02-12 17:23:39 +00:00
Dockerfile ci: Compile arm64 natively on the ubuntu-arm64 runner 2026-08-20 15:58:34 +00:00
musl.Dockerfile chore(deps): update dependency cargo-bins/cargo-binstall to v1.21.1 2026-07-26 22:55:18 +00:00