libretime/campcaster/doc/release.html

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<h1>Preface</h1>
This document is part of the <a href="http://campcaster.campware.org/">Campcaster</a>
project, Copyright © 2004 <a href="http://www.mdlf.org/">Media
Development Loan Fund</a>, under the GNU <a
href="http://www.gnu.org/licenses/gpl.html">GPL</a>.<br>
<ul>
<li>Author: $Author$</li>
<li>Version: $Revision$</li>
<li>Location: $URL$</li>
</ul>
<h1>Scope</h1>
This document describes the process of releasing a new version of
Campcaster. Obviously this document is only relevant to people who
have the rights and permissions to make such a release.<br>
<h1>Introduction</h1>
For all the releases of Campcaster to remain consistent, it is
preferable to have a repeatable release process, which will be followed
when creating releases. This ensures that no matter who creates the
releases, they will remain similar.<br>
<br>
The release process boils down to the following steps:<br>
<ul>
<li>getting Campcaster sources</li>
<li>checking the distribution script</li>
<li>updating release version and changelog<br>
</li>
<li>creating release tarballs</li>
<li>testing the tarballs</li>
<li>creating Debian packages<br>
</li>
<li>tagging the sources</li>
<li>publishing the tarballs</li>
<li>announcing the release<br>
</li>
</ul>
<h1>Getting Campcaster sources</h1>
It is assumed that the person doing the release has a read/write access
to the Campcaster version control system. As a first step of the
release process, a fresh copy of the version control repository is
exported, so as to insure that:<br>
<ul>
<li>the release contains exactly the files that are in the version
control system</li>
<li>there are no generated files in the release</li>
</ul>
To get a fresh copy of the Campcaster repository, execute the
following in an empty directory:
<pre><code>svn export svn://code.campware.org/campcaster/trunk/campcaster</code><br></pre>
<h1>Checking the distribution script</h1>
It is advisable to check the installation script <code>bin/dist.sh</code>,
to make sure it refers to up-to-date information from the development
environment.<br>
<br>
The most important aspect to check is that the specific versions of
tools mentioned in the distribution script are in sync with the tools
compiled by the master <code>Makefile</code> under the target <code>tools_setup</code>.
To check this, compare tool version variables in the two files, e.g. <code>BOOST_VERSION</code>
from <code>Makefile</code> with <code>boost_version</code> from <code>bin/dist.sh</code>.
Make sure to check the versions for all the tools mentioned in these
files. Also check that there are no tools missing from the distribution
script that are mentioned in the master <code>Makefile</code>.<br>
<h1>Updating release version and changelog</h1>
Updating the release version and maintining a changelog helps people
track the progress of the project. Also, building binary packages rely
on this information, in particular debian packages won't build if there
is a mismatch between the release version and the topmost entry in the
debian changelog file.<br>
<br>
Curently, only the debian changelog keeps track of the changes and the
version of Campcaster. To update the changelog, edit <code>etc/debian/changelog</code>,
by inserting a section onto the top of the file:<br>
<br>
<pre>campcaster (&lt;ls-version&gt;-1) unstable; urgency=low<br><br> * Changes listed here<br><br> -- <code>Package Maintainer &lt;maintainer@foo.bar&gt;</code> &lt;timestamp&gt;<br><br></pre>
The timestamp above must be preceeded by two spaces, and must be an RFC
2822 compliant date string, which is most easily produced by issuing
the <code>date -R</code> command. Please note that the debian package
manager is quite picky on the format of the changelog file. See <a
href="http://www.debian.org/doc/debian-policy/ch-source.html#s-dpkgchangelog">section
4.4</a> of the Debian Policy Manual for more details.<br>
<br>
Don't forget to commit the changes made to the changelog into Subversion
before proceeding.<br>
<h1>Creating release tarballs<br>
</h1>
To create the release tarballs, invoke the distribution script <code>bin/dist.sh</code>,
with the release version as its single parameter:<br>
<br>
<pre><code>./bin/dist.sh --version &lt;ls-version&gt;<br></code></pre>
<br>
This will create two tarballs in the current directory:<br>
<ul>
<li><code>campcaster-&lt;ls-version&gt;.tar.bz2</code></li>
<li><code>campcaster-libraries-&lt;ls-version&gt;.tar.bz2</code></li>
</ul>
<h1>Testing the tarballs</h1>
Having broken releases is very annoying, thus it is highly recommended
that the release tarballs are tested on a plain vanilla system. To test
the tarballs, follow the procedure described in the Campcaster <a
href="install.html">installation document</a>.<br>
<br>
Do not publish tarballs that have not been tested, or are known to be
broken.<br>
<h1>Creating Debian packages</h1>
After the source tarballs have been tested, Debian source and binary
packages can be created. To do so, upload the source tarballs to a
Debian system, and do the following:<br>
<br>
<pre>tar xfj campcaster-&lt;ls-version&gt;.tar.bz2
tar xfj campcaster-libraries-&lt;ls-version&gt;.tar.bz2
cd campcaster-&lt;ls-version&gt;
./bin/createDebianPackages.sh -d .. -v &lt;ls-version&gt; -m "Package Maintainer &lt;maintainer@foo.bar&gt;" -o ..
cd ..
</pre>
<br>
The above command will create the Debain source package files next to
the original source tarballs. The script will generate the following
files, making up the Debian source package:<br>
<br>
<pre>campcaster_&lt;ls-version&gt;-1.dsc
campcaster_&lt;ls-version&gt;-1.diff.gz
campcaster_&lt;ls-version&gt;.orig.tar.gz
</pre>
Based on the source packages, the Debian package management system can
build the binaries for the current target platform, provided all the
necessary packages required to build are installed on the system. For a
list of the necessary packages, please consult the debian/control file
in extracted debianized source tree generated below.<br>
Building is best done
in an empty directory as follows:<br>
<br>
<pre>rm -rf /opt/campcaster
rm -rf debian_build
mkdir debian_build
cd debian_build
dpkg-source -x ../campcaster_&lt;ls_version&gt;-1.dsc
cd campcaster-&lt;ls-version&gt;
sudo dpkg-buildpackage
cd ../..
</pre>
<!-- "dpkg-buildpackage -rfakeroot" would be better instead of
"sudo dpkg-buildpackage", but it does not work because of the strange
-libraries package -->
The above commands will result in the following debian packages:<br>
<br>
<pre>campcaster-libs_&lt;ls-version&gt;-1_&lt;arch&gt;.deb
campcaster-station_&lt;ls-version&gt;-1_&lt;arch&gt;.deb
campcaster-studio_&lt;ls-version&gt;-1_&lt;arch&gt;.deb
</pre>
<h1>Tagging the sources</h1>
After the tarballs have been tested, the release can be finalized. As a
first step, the current state of the Campcaster version control
repository has to be tagged, so that the the very versions in the
release can be retrieved at any later date. To tag the repository,
issue the following command:<br>
<br>
<pre><code>svn copy svn://code.campware.org/campcaster/trunk \
svn://code.campware.org/campcaster/tags/campcaster-&lt;ls-version&gt;
</code></pre>
<br>
This will tag the current state of the repository with the tag <code>campcaster-&lt;ls-version&gt;</code>,
enabling later retrieval of this specific state.<br>
<h1>Updating Trac</h1>
Add the new version number to the Version pull-down menu in Trac by
executing
<pre><code>trac-admin /usr/local/trac-projects/campcaster version add &lt;ls-version&gt;</code></pre>
on <code>code.campware.org</code>.
<h1>Publishing the tarballs</h1>
To make the release available to the public, the created tarballs have
to be published. This is done by making the files accessible under the
Campcaster project page on SourceForge: <code>http://sourceforge.net/projects/campcaster</code><span
style="font-family: monospace;"></span><code></code>. Currently, only
MDLF support staff have access to publish into this
space, so after creating the tarballs, one should contact them
personally to publish the files.<br>
<h1>Announcing the release</h1>
For the public to be aware of the new release, it has to be announced.
This is primarily done on the Campware site, but also on other
meta-sites, like freshmeat. In particular, the following announcements
are made:<br>
<ul>
<li>Campware.org site.</li>
<li>Freshmeat.net.</li>
<li>Press releases/announcements go to:</li>
<ul>
<li>NewsForge (<a class="moz-txt-link-freetext"
href="http://www.newsforge.com/">http://www.newsforge.com</a>)</li>
<li> PRweb (<a class="moz-txt-link-freetext"
href="http://www.prweb.com/">http://www.prweb.com</a>)</li>
<li>MDLF's press person</li>
<li> Campcaster developers' list, urging everyone to send it to
friends and contacts</li>
<li>Other Campware developers' lists on major releases</li>
<li> Other mailing lists and friendly/relevant organizations</li>
</ul>
</ul>
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