This tooling is designed to automate 2 main tasks that are part of
the package maintenance workflow of Clear Linux LTS. These tasks are:
- Back-porting of a patch (e.g. security fix) to older branches.
- (Not implemented yet) Building RPMs with the intent of sharing binaries of
older LTS branches to newer branches whenever possible.
2 new targets are defined in Makefile.common.lts:
- lts-show: Show a summary of active LTS branches
- lts-backport: Attempt to fast-forward the previous active branch to the current branch
"Active" branches correspond to LTS releases that currently have support.
They are listed in a flat file "active-branches" in "lts" directory, from
oldest to newest. New entries are added by Clear Linux LTS developers as
new releases become available, and entries removed as releases become
obsolete.
Note: For CVE patching, the tool is not aware of CVE severity levels or
the minimum supported severity level of each LTS branch. For now it is
the user's responsibility to know when a CVE does not apply to older
branches and stop calling "make lts-backport".
Signed-off-by: Tan, Yew Wayne <yew.wayne.tan@intel.com>
