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Update the macOS bootstrap bundles for macOS 27 and ship separate Apple Silicon and Intel archives.
macOS changes
- Darwin
dash,toolchain, andutilsnow use<component>_aarch64_darwin.tar.zstand<component>_x86_64_darwin.tar.zst. Select the archive for the machine running the tools and update download URLs and checksums. - Update the Apple Silicon toolchain from Xcode 27. Both architectures' bootstrap utilities are built with SDK 27.0 and require macOS 14.0 or later.
- Add SDK 27.0 and remove SDK 15.4. The available SDKs are 12.1, 14.5, 15.2, 26.5, and 27.0; their
macos_sdk_<version>.tar.zstarchives remain architecture-independent.
Package updates
- coreutils: 9.11 → 9.12.
- Linux sandbox libgcc: 16.1.0 → 16.2.0.
- CA certificates: 2026-07-16 → 2026-08-13.
- Gawk remains at 5.4.0.
Build improvements
- Add
make all_darwinto build both architectures' utilities and package the native toolchain and SDKs. Docker is required only for Linux builds. - Support overrides for the macOS toolchain, build SDK, deployment target, and build parallelism.
- Archive only supported, completed components, remove failed archive outputs, fix source-cleaning targets, and isolate parallel Linux Docker builds.
The attached SHASUMS256.txt contains checksums for all 21 archives.
Full changelog: v2026.07.29...v2026.09.16