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Releasing Ogre from Open Robotics fork

The ogre-2.1-release repository follows the guidelines of Packaging with Git. There are different permanent branches useful for packaging:

  • upstream: the branch host the code coming from the Ogre project. It also has the modifications made by Open Robotics on top of the Ogre code.
  • pristine-tar: compressed version of upstream branch.
  • master: upstream branch with debian/ metadata directory.

Note that the fork is not configured to be able to host changes to source code directly in repository files. Any modification should happen through patches in debian/patches.

Launch a new release

Prerequisites

To manage Debian release repositories using git the git-buildpackage tool is required in the local system together with a checkout of this repository:

sudo apt-get install git-buildpackage
git clone https://github.com/ignition-forks/ogre-2.1-release

Update Changelog

The Debian version of the package uses the form: 2.0.9999~20180616~06a386f:

  • First 2.0.9999 means that a snapshot just before 2.1 was used from ogre repository.
  • 20180616 date when the source snapshot was taken
  • 06a386f commit hash from the source snapshot from Ogre repository

The repository uses the same changelog for all distributions (a non canonical way of using this kind of gbp repositories). Since the upstream source code it is not designed to be modified, new versions usually implies: a new supported platform or new patches in Debian building system in the master branch.

To bump revision:

# distro can be any release name of Ubuntu or Debian
gbp dch --force-distribution <distro> --auto

From there are two options: if a changes in Debian packaging need to be released or a new platform needs to be released:

Option 1) modify revision with changes in packaging

The command should open an editor with the reversion set to something like -Xubuntu1 while keeping the version still the same. Edit Xubuntu1 to just use X +1.

# example of debian/changelog modification
ogre-2.1 (2.0.9999~20180616~06a386f-3ubuntu1) bionic; urgency=medium
<manual edition>
ogre-2.1 (2.0.9999~20180616~06a386f-4) bionic; urgency=medium

Option 2) modify revision with changes in distribution

The command should open an editor with the reversion set to something like -Xubuntu1 while keeping the version still the same. Edit Xubuntu1 to leave the version as it was before:

# example of debian/changelog modification
ogre-2.1 (2.0.9999~20180616~06a386f-3ubuntu1) buster; urgency=medium
<manual edition>
ogre-2.1 (2.0.9999~20180616~06a386f-3) focal; urgency=medium

Triggering the release in Jenkins

After preparing the repository in a local system clone all is ready to launch a new release directly in the Jenkins server job:

Login in the server and press Build with Parameters. The following parameters needs to be set correctly:

  • LINUX_DISTRO (Ubuntu or Debian) and DISTRO (distribution name) needs to match what is currently in the Changelog.
  • ARCH can be set to any particular architecture supported by Ubuntu/Debian being amd64, arm64 or armfh the main ones.

The build should generate packages and upload the to the stable repository.