Release procedure for HPX¶
Below is a step by step procedure for making an HPX release. We aim to produce two releases per year: one in March-April, and one in September-October.
This is a living document and may not be totally current or accurate. It is an attempt to capture current practices in making an HPX release. Please update it as appropriate.
One way to use this procedure is to print a copy and check off the lines as they are completed to avoid confusion.
Notify developers that a release is imminent.
Write release notes in
docs/sphinx/releases/whats_new_$VERSION.rst. Keep adding merged PRs and closed issues to this until just before the release is made. Use
tools/generate_pr_issue_list.shto generate the lists.
Add the new release notes to the table of contents in
Build the docs, and proof-read them. Update any documentation that may have changed, and correct any typos. Pay special attention to:
Update grant information
Update grant information
This step does not apply to patch releases. For both APEX and libCDS:
If there have been any commits to the release branch since the last release, create a tag from the old release branch before deleting the old release branch in the next step.
Unprotect the release branch in the github repository settings so that it can be deleted and recreated (tick “Allow force pushes” in the release branch settings of the repository).
Reset the release branch to the latest stable state on master and force push to origin/release. If you are creating a patch release, branch from the release tag for which you want to create a patch release.
git checkout -b release(or just
checkoutin case the it exists)
git reset --hard stable
git push --force origin release
Protect the release branch again to disable force pushes.
Check out the release branch.
CMakeLists.txtcontain the correct values. Change them if needed.
This step does not apply to patch releases. Remove features which have been deprecated for at least 2 releases. This involves removing build options which enable those features from the main CMakeLists.txt and also deleting all related code and tests from the main source tree.
The general deprecation policy involves a three-step process we have to go through in order to introduce a breaking change:
First release cycle: add a build option that allows for explicitly disabling any old (now deprecated) code.
Second release cycle: turn this build option OFF by default.
Third release cycle: completely remove the old code.
The main CMakeLists.txt contains a comment indicating for which version the breaking change was introduced first. In the case of deprecated features which don’t have a replacement yet, we keep them around in case (like Vc for example).
Update the minimum required versions if necessary (compilers, dependencies, etc.) in
Verify that the jenkins setup for the release branch on rostam is running and does not display any errors.
Repeat the following steps until satisfied with the release.
Nis the current iteration of this step. Start with
Create a pre-release on GitHub using the script
tools/roll_release.sh. This script automatically tag with the corresponding release number. The script requires that you have the STE||AR Group signing key.
This step is not necessary for patch releases. Notify
firstname.lastname@example.org the availability of the release candidate. Ask users to test the candidate by checking out the release candidate tag.
Allow at least a week for testing of the release candidate.
git mergewhen possible, and fall back to
git cherry-pickwhen needed. For patch releases
git cherry-pickis most likely your only choice if there have been significant unrelated changes on master since the previous release.
Go back to the first step when enough patches have been added.
If there are no more patches, continue to make the final release.
Update any occurrences of the latest stable release to refer to the version about to be released. For example,
quickstart.rstcontains instructions to check out the latest stable tag. Make sure that refers to the new version.
Add a new entry to the RPM changelog (
cmake/packaging/rpm/Changelog.txt) with the new version number and a link to the corresponding changelog.
CMakeLists.txtto an empty string.
Add the release date to the caption of the current “What’s New” section in the docs, and change the value of
Create a release on GitHub using the script
tools/roll_release.sh. This script automatically tag the with the corresponding release number. The script requires that you have the STE||AR Group signing key.
Download links on the downloads pages. Link to the release on GitHub.
Documentation links on the docs page (link to generated documentation on GitHub Pages). Follow the style of previous releases.
A new blog post announcing the release, which links to downloads and the “What’s New” section in the documentation (see previous releases for examples).
Merge release branch into master.
Post-release cleanup. Create a new pull request against master with the following changes:
Modify the release procedure if necessary.
Update Vcpkg (
https://github.com/Microsoft/vcpkg) to pull from latest release.
Update version number in CONTROL
Update tag and SHA512 to that of the new release
Announce the release on email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, the HPX Slack channel, the IRC channel, Sonia Sachs, our list of external collaborators, isocpp.org, reddit.com, HPC Wire, Inside HPC, Heise Online, and a CCT press release.
Beer and pizza.