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RELEASING
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RELEASING
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Here are the steps to follow to create a new cairo release:
1) Ensure that there are no local, uncommitted/unpushed
modifications. You're probably in a good state if both "git diff
HEAD" and "git log master..origin/master" give no output. Also make
sure you have libglib2.0-doc installed (else you'll get excessive
gtk-doc cross reference warnings in the next step).
2) Verify that the code passes "make distcheck"
First, make sure you have 'nm' and 'readelf' commands in PATH.
this should be OK with any Linux distro.
Running "make distcheck" should result in no warnings or
errors and end with a message of the form:
=============================================
cairo-X.Y.Z archives ready for distribution:
cairo-X.Y.Z.tar.gz
=============================================
(But the tar file isn't actually ready yet, as we still have
some more steps to follow).
Note that it's allowed (and perhaps recommended) to run the
"make distcheck" step against an all-software X server such as
Xvfb to avoid getting tripped up by any X-server-driver-specific
bugs. See test/README for details
If you get errors about local PLT entries, you get the list of
cairo entries with the error. For each of these, a call to
slim_hidden_def and slim_hidden_proto is needed in the cairo
implementation in the style of other similar calls.
In the unfortunate case that you have to push a snapshot out
(note, I said snapshot, not release) without the entire test
suite passing, here's the magic env vars to set when doing
'make distcheck' and 'make release-publish' that will let you
get away with it. At any cost, never ever release without
(implied) distchecking. Every time we got around it, it turned
out to be a disaster. Anyway, here's the pass code:
DISPLAY= CAIRO_TEST_TARGET=" "
3) Fill out an entry in the NEWS file
Sift through the logs since the last release. This is most
easily done with a command such as:
git log --stat X.Y.Z..
where X.Y.Z is the previous release version.
Summarize major changes briefly in a style similar to other
entries in NEWS. Take special care to note any additions in
the API. These should be easy to find by noting modifications
to .h files in the log command above. And more specifically,
the following command will show each patch that has changed a
public header file since the given version:
find src/ -name '*.h' ! -name '*-private.h' ! -name 'cairoint.h' ! -name 'cairo-*features*.h' | \
xargs git diff X.Y.Z.. --
4) Increment cairo_version_{minor|micro} in cairo-version.h:
If there are backward-incompatible changes in the API, stop
now and don't release. Go back and fix the API instead. Cairo
is intended to remain backwards-compatible as far as API.
So cairo_version_major will not be incremented unless we come
up with a new versioning scheme to take advantage of it.
If there are API additions, then increment cairo_version_minor
and reset cairo_version_micro to 0. NOTE: The minor version is
only incremented for releases, not for snapshots.
Otherwise, (i.e. there are only bug fixes), increment
cairo_version_micro to the next larger (even) number.
5) Commit the changes to NEWS and cairo-version.h
It's especially important to mention the new version number in your
commit log.
6) Run "make release-publish" which will perform the following steps
for you:
* Generate ChangeLog files out of git repository
* Check that ChangeLog files were generated properly
* Check that the version number ends with an even micro component
* Check that no release exists with the current version
* Verify that make distcheck completes successfully
* Generate the final tar file
* Generate an sha1sum file
* Sign the sha1sum using your GPG setup (asks for your GPG password)
* scp the three files to appear on http://cairographics.org/releases
* Generate a versioned manual and upload it to appear as both:
http://cairographics.org/manual-X.Y.Z
http://cairographics.org/manual
* Place local copies of the three files in the releases directory
* Create a LATEST-package-version file (after deleting any old one)
* Tag the entire source tree with a tag of the form X.Y.Z, and sign
the tag with your GPG key (asks for your GPG password, and you
may need to set GIT_COMMITTER_NAME and GIT_COMMITTER_EMAIL to match
your public-key's setting or this fails.)
* Provide some text for the release announcement (see below).
If for some reason you lost this message, "make release-publish-message"
prints it for you.
7) Increment cairo_version_micro to the next larger (odd) number in
cairo-version.h, commit, and push.
8) Push the newly created tag out to the central tree with a command
something like:
git push origin master X.Y.Z
9) Edit the cairo bugzilla product and add the new version numbers. Note
that you need to add two versions. One for the release/snapshot (with
an even micro version), another with the post-release version (with an
odd micro version).
10) Send a message to cairo-announce@cairographics.org and CC
cairo@cairographics.org, gnome-announce-list@gnome.org and
ftp-release@lists.freedesktop.org (pr@lwn.net as well for major
releases) to announce the new release using the text provided from
"make release-publish", adding the excerpt from NEWS, your
signature, followed by the standard "What is cairo" and "Where to
get more information about cairo" blurbs from README, and finally
the shortlog of all changes since last release, generated by:
git shortlog X.Y.Z...
where X.Y.Z is the last released version.
11) Edit the cairo wiki to add the announcement to the NEWS page and
the front page. (just the parts before your signature).