Morgan ea269d2761 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.

2026-10-04 22:31:28 +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

2026-10-04 22:31:28 +00:00

musl.Dockerfile

chore(deps): update dependency cargo-bins/cargo-binstall to v1.24.0

2026-10-01 16:07:21 +00:00