Releasing process
- Overview
- Release schedule
- Cherry-pick and test
- Making a branchpoint
- Pre-release announcement
- Making a new release
- Announce the release
- Update the mesa3d.org website
- Update Bugzilla
Overview
This document uses the convention X.Y.Z for the release number with X.Y being
the stable branch name.
Mesa provides feature and bugfix releases. Former use zero as patch version (Z),
while the latter have a non-zero one.
For example:
Mesa 10.1.0 - 10.1 branch, feature Mesa 10.1.4 - 10.1 branch, bugfix Mesa 12.0.0 - 12.0 branch, feature Mesa 12.0.2 - 12.0 branch, bugfix
Release schedule
Releases should happen on Fridays. Delays can occur although those should be keep
to a minimum.
See our calendar for the
date and other details for individual releases.
Feature releases
- Available approximately every three months.
- Initial timeplan available 2-4 weeks before the planned branchpoint (rc1) on the mesa-announce@ mailing list.
- A pre-release announcement should be available approximately 24 hours before the final (non-rc) release.
Stable releases
- Normally available once every two weeks.
- Only the latest branch has releases. See note below.
- A pre-release announcement should be available approximately 48 hours before the actual release.
Note: There is one or two releases overlap when changing branches. For example:
The final release from the 12.0 series Mesa 12.0.5 will be out around the same
time (or shortly after) 13.0.1 is out.
Cherry-picking and testing
Commits nominated for the active branch are picked as based on the criteria as described in the same section.
Nomination happens in the mesa-stable@ mailing list. However, maintainer is resposible of checking for forgotten candidates in the master branch. This is achieved by a combination of ad-hoc scripts and a casual search for terms such as regression, fix, broken and similar.
Maintainer is also responsible for testing in various possible permutations of the autoconf and scons build.
Cherry-picking and build/check testing
Done continuously up-to the pre-release announcement.
As an exception, patches can be applied up-to the last ~1h before the actual release. This is made only with explicit permission/request, and the patch must be very well contained. Thus it cannot affect more than one driver/subsystem.
Currently Ilia Mirkin and AMD devs have requested "permanent" exception.
- make distcheck, scons and scons check must pass
- Testing with different version of system components - LLVM and others is also performed where possible.
- As a general rule, testing with various combinations of configure switches, depending on the specific patchset.
Achieved by combination of local ad-hoc scripts, mingw-w64 cross compilation and AppVeyor plus Travis-CI, the latter as part of their Github integration.
For Windows related changes, the main contact point is Brian Paul. Jose Fonseca can also help as a fallback contact.
For Android related changes, the main contact is Tapani Pälli. Mauro Rossi is collaborating with android-x86 and may provide feedback about the build status in that project.
For MacOSX related changes, Jeremy Huddleston Sequoia is currently a good contact point.
Note: If a patch in the current queue needs any additional
fix(es), then they should be squashed together.
The commit messages and the cherry picked from
tags must be preserved.
This should be noted in the pre-announce email.
git show b10859ec41d09c57663a258f43fe57c12332698e commit b10859ec41d09c57663a258f43fe57c12332698e Author: Jonas Pfeil <pfeiljonas@gmx.de> Date: Wed Mar 1 18:11:10 2017 +0100 ralloc: Make sure ralloc() allocations match malloc()'s alignment. The header of ralloc needs to be aligned, because the compiler assumes ... (cherry picked from commit cd2b55e536dc806f9358f71db438dd9c246cdb14) Squashed with commit: ralloc: don't leave out the alignment factor Experimentation shows that without alignment factor gcc and clang choose ... (cherry picked from commit ff494fe999510ea40e3ed5827e7818550b6de126)
Regression/functionality testing
Less often (once or twice), shortly before the pre-release announcement. Ensure that testing is redone if Intel devs have requested an exception, as per above.
- no regressions should be observed for Piglit/dEQP/CTS/Vulkan on Intel platforms
- no regressions should be observed for Piglit using the swrast, softpipe and llvmpipe drivers
Currently testing is performed courtesy of the Intel OTC team and their Jenkins CI setup. Check with the Intel team over IRC how to get things setup.
Installing the built driver from the pre-announced RC branch in the system and making some every day's use until the release may be a good idea too.
Making a branchpoint
A branchpoint is made such that new development can continue in parallel to stabilisation and bugfixing.
Note: Before doing a branch ensure that basic build and make check
testing is done and there are little to-no issues.
Ideally all of those should be tackled already.
Check if the version number is going to remain as, alternatively
git mv docs/relnotes/{current,new}.html
as appropriate.
To setup the branchpoint:
git checkout master # make sure we're in master first git tag -s X.Y-branchpoint -m "Mesa X.Y branchpoint" git checkout -b X.Y git checkout master $EDITOR VERSION # bump the version number git commit -as cp docs/relnotes/{X.Y,X.Y+1}.html # copy/create relnotes template git commit -as git push origin X.Y-branchpoint X.Y
Now go to Bugzilla and add the new Mesa version X.Y.
Check that there are no distribution breaking changes and revert them if needed. For example: files being overwritten on install, etc. Happens extremely rarely - we had only one case so far (see commit 2ced8eb136528914e1bf4e000dea06a9d53c7e04).
Proceed to release -rc1.
Pre-release announcement
It comes shortly after outstanding patches in the respective branch are pushed.
Developers can check, in brief, what's the status of their patches. They,
alongside very early testers, are strongly encouraged to test the branch and
report any regressions.
It is followed by a brief period (normally 24 or 48 hours) before the actual
release is made.
Terminology used
- Nominated
Patch that is nominated but yet to to merged in the patch queue/branch.
- Queued
Patch is in the queue/branch and will feature in the next release. Barring reported regressions or objections from developers.
- Rejected
Patch does not fit the
criteria and
is followed by a brief information.
The release maintainer is human so if you believe you've spotted a mistake do
let them know.
Format/template
Subject: [ANNOUNCE] Mesa X.Y.Z release candidate To: mesa-announce@... Cc: mesa-dev@... Hello list, The candidate for the Mesa X.Y.Z is now available. Currently we have: - NUMBER queued - NUMBER nominated (outstanding) - and NUMBER rejected patches BRIEF SUMMARY OF CHANGES Take a look at section "Mesa stable queue" for more information. Testing reports/general approval -------------------------------- Any testing reports (or general approval of the state of the branch) will be greatly appreciated. The plan is to have X.Y.Z this DAY (DATE), around or shortly after TIME. If you have any questions or suggestions - be that about the current patch queue or otherwise, please go ahead. Trivial merge conflicts ----------------------- List of commits where manual intervention was required. Keep the authors in the CC list. commit SHA Author: AUTHOR COMMIT SUMMARY CHERRY PICKED FROM For example: commit 990f395e007c3204639daa34efc3049f350ee819 Author: Emil Velikov <emil.velikov@collabora.com> anv: automake: cleanup the generated json file during make clean (cherry picked from commit 8df581520a823564be0ab5af7dbb7d501b1c9670) Cheers, Emil Mesa stable queue ----------------- Nominated (NUMBER) ================== AUTHOR (NUMBER): SHA COMMIT SUMMARY For example: Dave Airlie (1): 2de85eb radv: fix texturesamples to handle single sample case Queued (NUMBER) =============== AUTHOR (NUMBER): COMMIT SUMMARY For example: Jonas Pfeil (1): ralloc: Make sure ralloc() allocations match malloc()'s alignment. Squashed with ralloc: don't leave out the alignment factor Rejected (NUMBER) ================= Rejected (11) ============= AUTHOR (NUMBER): SHA COMMIT SUMMARY Reason: ...
Making a new release
These are the instructions for making a new Mesa release.
Get latest source files
Ensure the latest code is available - both in your local master and the relevant branch.
Perform basic testing
Most of the testing should already be done during the cherry-pick and pre-announce stages. So we do a quick 'touch test'
- make distcheck (you can omit this if you're not using --dist below)
- scons (from release tarball)
- the produced binaries work
Here is one solution that I've been using.
git clean -fXd; git clean -nxd read # quick cross check any outstanding files export __version=`cat VERSION` export __mesa_root=../ export __build_root=./foo chmod 755 -fR $__build_root; rm -rf $__build_root mkdir -p $__build_root && cd $__build_root $__mesa_root/autogen.sh && make -j2 distcheck # Build check the tarballs (scons, linux) tar -xaf mesa-$__version.tar.xz && cd mesa-$__version scons cd .. && rm -rf mesa-$__version # Build check the tarballs (scons, windows/mingw) tar -xaf mesa-$__version.tar.xz && cd mesa-$__version scons platform=windows toolchain=crossmingw cd .. && rm -rf mesa-$__version # Test the automake binaries tar -xaf mesa-$__version.tar.xz && cd mesa-$__version ./configure \ --with-dri-drivers=i965,swrast \ --with-gallium-drivers=swrast \ --with-vulkan-drivers=intel \ --enable-llvm-shared-libs \ --enable-llvm \ --enable-glx-tls \ --enable-gbm \ --enable-egl \ --with-egl-platforms=x11,drm,wayland make -j2 && DESTDIR=`pwd`/test make -j6 install __glxinfo_cmd='glxinfo 2>&1 | egrep -o "Mesa.*|Gallium.*|.*dri\.so"' __glxgears_cmd='glxgears 2>&1 | grep -v "configuration file"' __es2info_cmd='es2_info 2>&1 | egrep "GL_VERSION|GL_RENDERER|.*dri\.so"' __es2gears_cmd='es2gears_x11 2>&1 | grep -v "configuration file"' export LD_LIBRARY_PATH=`pwd`/test/usr/local/lib/ export LIBGL_DRIVERS_PATH=`pwd`/test/usr/local/lib/dri/ export LIBGL_DEBUG=verbose eval $__glxinfo_cmd eval $__glxgears_cmd eval $__es2info_cmd eval $__es2gears_cmd export LIBGL_ALWAYS_SOFTWARE=1 eval $__glxinfo_cmd eval $__glxgears_cmd eval $__es2info_cmd eval $__es2gears_cmd export LIBGL_ALWAYS_SOFTWARE=1 export GALLIUM_DRIVER=softpipe eval $__glxinfo_cmd eval $__glxgears_cmd eval $__es2info_cmd eval $__es2gears_cmd # Smoke test DOTA2 unset LD_LIBRARY_PATH unset LIBGL_DRIVERS_PATH unset LIBGL_DEBUG unset LIBGL_ALWAYS_SOFTWARE export VK_ICD_FILENAMES=`pwd`/src/intel/vulkan/dev_icd.json steam steam://rungameid/570 -vconsole -vulkan
Update version in file VERSION
Increment the version contained in the file VERSION at Mesa's top-level, then commit this change.
Create release notes for the new release
Create a new file docs/relnotes/X.Y.Z.html, (follow the style of the previous release notes). Note that the sha256sums section of the release notes should be empty (TBD) at this point.
Two scripts are available to help generate portions of the release notes:
./bin/bugzilla_mesa.sh ./bin/shortlog_mesa.sh
The first script identifies commits that reference bugzilla bugs and obtains the descriptions of those bugs from bugzilla. The second script generates a log of all commits. In both cases, HTML-formatted lists are printed to stdout to be included in the release notes.
Commit these changes and push the branch.
git push origin HEAD
Use the release.sh script from xorg util-modular
Start the release process.
../relative/path/to/release.sh . # append --dist if you've already done distcheck above
Pay close attention to the prompts as you might be required to enter your GPG and SSH passphrase(s) to sign and upload the files, respectively.
Add the sha256sums to the release notes
Edit docs/relnotes/X.Y.Z.html to add the sha256sums as available in the mesa-X.Y.Z.announce template. Commit this change.
Back on mesa master, add the new release notes into the tree
Something like the following steps will do the trick:
git cherry-pick -x X.Y~1 git cherry-pick -x X.Y
Also, edit docs/relnotes.html to add a link to the new release notes, and edit docs/index.html to add a news entry. Then commit and push:
git commit -as -m "docs: add news item and link release notes for X.Y.Z" git push origin master X.Y
Announce the release
Use the generated template during the releasing process.
Update the mesa3d.org website
As the hosting was moved to freedesktop, git hooks are deployed to update the
website. Manually check that it is updated 5-10 minutes after the final git push
Update Bugzilla
Parse through the bugreports as listed in the docs/relnotes/X.Y.Z.html
document.
If there's outstanding action, close the bug referencing the commit ID which
addresses the bug and mention the Mesa version that has the fix.
Note: the above is not applicable to all the reports, so use common sense.