# M3 static Rust tooling validation

Development reference and historical context. For current operating instructions, use the [user manual](../README.md). Acceptance applies only to the source and artifacts identified in each record.


Validated on 2026-09-21 (Asia/Shanghai), x86_64 Arch Linux with pinned Rust 1.98.0.
This records the M3 diagnostic foundation before M4 adds the real boot handoff.
See [tooling usage](tooling.md) and the [through-M12 ledger](implementation-status.md).

Commands completed successfully:

```sh
make tooling
make tooling-test
make bootstrap
make smoke-test
make check
```

Both exported binaries were AArch64 static ELF executables without a dynamic
interpreter, shared-library requirements or GLIBC symbol requirements. Supplemental
`ldd` printed `not a dynamic executable`. At this milestone:

| Artifact | Bytes | SHA-256 |
| --- | --- | --- |
| `out/fds` | 537424 | `04052554eef3c592230aa912d6dbcaec9bc37c168c0e240b924a4fb215a68815` |
| `out/fds-stage0` | 375824 | `930afd537aaf8e90715e5ec73d70480b44fbe9dfe3c0615014ed78b36239bd7c` |

Six shared-library tests passed. Actual ARM execution then verified tool identity,
JSON output, the master-plan manifest example, strict/bounded manifest rejection,
missing/unique/ambiguous SYSTEM selection, device-path rejection, explicit recovery
selection, and duplicate boot-option rejection. All filesystem fixtures were
temporary; no physical block device or monitor was accessed.

Build/source hashes are in `out/manifests/fds-tools*.sha256`; logs are in
`out/logs/m3-tooling.log`, `m3-tooling-test.log`, `m3-bootstrap.log`,
`m3-smoke-test.log`, and `m3-check.log`. Later milestones will replace these tool
artifacts; the hashes above describe the validated M3 version.

The M0 smoke script's optional host-PATH QEMU execution was skipped, as before;
the M3 integration script explicitly ran both ARM tools using container QEMU.
No physical Pi result or boot-speed claim is made. M3's stage0 refused normal
boot invocation rather than claiming its diagnostic skeleton could switch roots.