2.9 KiB
Updating the Bazel prebuilts in AOSP
Instructions
First, decide which version of Bazel you need.
- A Bazel release (e.g. Bazel 3.7.0)
- A Bazel nightly
- A Bazel per-commit build
Whichever of these you use, you will need to use official nojdk x86-64 versions of Bazel, for Linux and macOS (Darwin).
Run the update.sh script in the Linux prebuilts repository to download the
and verify the binaries from the trusted Bazel CI pipeline:
./update.sh <commit>
To get the commit hash for builds, see the [Bazel releases], [Bazel nightlies] or [Bazel per-commit builds] sections below.
update.sh will also verify that the downloaded binary has the correct SHA-256
checksum as provided from Bazel CI metadata.
Once you have the binaries, you will need to create and send two CLs, to update the Linux and macOS prebuilts that live in separate Git repositories i.e.
- https://android.googlesource.com/platform/prebuilts/bazel/linux-x86_64/
- https://android.googlesource.com/platform/prebuilts/bazel/darwin-x86_64/
The update script does not automatically create CLs, so you need to create them manually. In the two CLs descriptions, mention the testing you did, which should at least include:
- For release builds only: Verifying the file signature, e.g.
gpg --import bazel-release.pub.gpg- Taken from https://bazel.build/bazel-release.pub.gpg
gpg --verify bazel_nojdk-<commit>-linux-x86_64.sig- It should say "Good signature from Bazel Developer ..."
- Verifying that Bazel starts, on Linux and on macOS, e.g.
source build/envsetup.shbazel info
- Verifying basic user journeys succeed.
build/bazel/scripts/milestone-2/demo.sh fullbuild/bazel/scripts/milestone-2/demo.sh generate && build/bazel/scripts/milestone-2/demo.sh sync && USE_BAZEL=1 USE_BAZEL_ANALYSIS=1 m libc
Ensure that the Linux and Darwin CLs are set to the same Gerrit topic so they are submitted together.
Obtaining Bazel binaries
The update.sh script automates downloading Bazel binaries. The next sections
describe how the different Bazel binaries (release, nightly, per-commit) can be
manually downloaded from the Bazel CI.
Bazel releases
The commit hash for linux and darwin nojdk x86-64 binaries are available from https://github.com/bazelbuild/bazel/releases
Bazel nightlies
The commit hash and urls for linux and macOS nojdk x86-64 binaries are available in https://storage.googleapis.com/bazel-builds/metadata/latest.json
Bazel per-commit builds
You need to know the GitHub commit that contains your change, e.g.
364a867df2
And the linux and macOS nojdk x86-64 binaries are available from:
https://storage.googleapis.com/bazel-builds/metadata/<commit>.json