/* Copyright (c) 2003,2005,2007 Theodore Roth All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* $Id$ */ /** \page release_method Release Numbering and Methodology \section version_info Release Version Numbering Scheme Release numbers consist of three parts, a major number, a minor number, and a revision number, each separated by a dot. The major number is currently 1 (and has always been). It will only be bumped in case a new version offers a major change in the API that is not backwards compatible. In the past (up to 1.6.x), even minor numbers have been used to indicate "stable" releases, and odd minor numbers have been reserved for development branches/versions. As the latter has never really been used, and maintaining a stable branch that eventually became effectively the same as the development version has proven to be just a cumbersome and tedious job, this scheme has given up in early 2010, so starting with 1.7.0, every minor number will be used. Minor numbers will be bumped upon judgement of the development team, whenever it seems appropriate, but at least in cases where some API was changed. Starting with version 1.4.0, a file indicates the library version of an installed library tree. \section release_info Releasing AVR Libc The information in this section is only relevant to AVR Libc developers and can be ignored by end users. \note In what follows, I assume you know how to use SVN and how to checkout multiple source trees in a single directory without having them clobber each other. If you don't know how to do this, you probably shouldn't be making releases or cutting branches. \subsection release_branch Creating an SVN branch The following steps should be taken to cut a branch in SVN (assuming $username is set to your savannah username): -# Check out a fresh source tree from SVN trunk. -# Update the NEWS file with pending release number and commit to SVN trunk:
Change Changes since avr-libc-\: to Changes in avr-libc-\. -# Set the branch-point tag (setting \ and \ accordingly):
svn copy svn+ssh://$username\@svn.savannah.nongnu.org/avr-libc/trunk svn+ssh://$username\@svn.savannah.nongnu.org/avr-libc/tags/avr-libc-\<major\>_\<minor\>-branchpoint -# Create the branch:
svn copy svn+ssh://$username\@svn.savannah.nongnu.org/avr-libc/trunk svn+ssh://$username\@svn.savannah.nongnu.org/avr-libc/branches/avr-libc-\<major\>_\<minor\>-branch -# Update the package version in configure.ac and commit configure.ac to SVN trunk:
Change minor number to next odd value. -# Update the NEWS file and commit to SVN trunk:
Add Changes since avr-libc-\: -# Check out a new tree for the branch:
svn co svn+ssh://$username\@svn.savannah.nongnu.org/avr-libc/branches/avr-libc-\<major\>_\<minor\>-branch -# Update the package version in configure.ac and commit configure.ac to SVN branch:
Change the patch number to 90 to denote that this now a branch leading up to a release. Be sure to leave the \ part of the version. -# Bring the build system up to date by running bootstrap and configure. -# Perform a 'make distcheck' and make sure it succeeds. This will create the snapshot source tarball. This should be considered the first release candidate. -# Upload the snapshot tarball to savannah. -# Update the bug tracker interface on Savannah: Bugs —> Edit field values —> Release / Fixed Release -# Announce the branch and the branch tag to the avr-libc-dev list so other developers can checkout the branch. \subsection release_rolling Making a release A stable release will only be done on a branch, not from the SVN trunk. The following steps should be taken when making a release: -# Make sure the source tree you are working from is on the correct branch:
svn switch svn+ssh://$username\@svn.savannah.nongnu.org/avr-libc/branches/avr-libc-\<major\>_\<minor\>-branch -# Update the package version in configure.ac and commit it to SVN. -# Update the gnu tool chain version requirements in the README and commit to SVN. -# Update the ChangeLog file to note the release and commit to SVN on the branch:
Add Released avr-libc-\. -# Update the NEWS file with pending release number and commit to SVN:
Change Changes since avr-libc-\: to Changes in avr-libc-\:. -# Bring the build system up to date by running bootstrap and configure. -# Perform a 'make distcheck' and make sure it succeeds. This will create the source tarball. -# Tag the release:
svn copy . svn+ssh://$username\@svn.savannah.nongnu.org/avr-libc/tags/avr-libc-\<major\>_\<minor\>_\<patch\>-release
or
svn copy svn+ssh://$username\@svn.savannah.nongnu.org/avr-libc/branches/avr-libc-\<major\>_\<minor\>-branch svn+ssh://$username\@svn.savannah.nongnu.org/avr-libc/tags/avr-libc-\<major\>_\<minor\>_\<patch\>-release -# Upload the tarball to savannah. -# Update the NEWS file, and commit to SVN:
Add Changes since avr-libc-\_\_\: -# Update the bug tracker interface on Savannah: Bugs —> Edit field values —> Release / Fixed Release -# Generate the latest documentation and upload to savannah. -# Announce the release. The following hypothetical diagram should help clarify version and branch relationships. \image html releases.png "Release tree" \image latex releases.eps "Release tree" width=5in */