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Prefix: add stabilisation TODOs, changelog entry

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Signed-off-by: Thilo Fromm <thilofromm@microsoft.com>
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Thilo Fromm 2023-09-20 15:19:28 +02:00
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PREFIX.md
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**!!! NOTE: Prefix support in the Flatcar SDK is EXPERIMENTAL at this time !!!**
## Path to stabilisation TODO list
Before prefix build support are considered stable, the below must be implemented:
1. Integrate `cb-bootstrap` with the Flatcar SDK.
Currently, `setup_prefix` uses cross-boss' `cb-bootstrap` to set up the prefix environment.
Bootstrapping must be fully integrated with the Flatcar SDK before prefix builds are considered stable.
2. Integrate prefix builds with `/build/<board>` environment and use board cross toolchain.
Prefix builds currently use the SDK cross toolchains (`/usr/<arch>-gnu/`) instead of board toolchains in `/build/<board>`.
Prefix builds must be integrated with the board toolchains and stop using `cb-emerge` before considered stable.
3. Add prefix wrappers for all portage tools (similar to board wrappers), not just `emerge`.
4. Add test cases for prefix builds to [mantle/kola](https://github.com/flatcar/mantle/tree/flatcar-master/kola).
## About
Prefix builds let you build and ship applications and all their dependencies in a custom directory.

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changelog/changes/2023-09-20-experimental-prefix-builds.md Normal file
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- SDK: Experimental support for [prefix builds](https://github.com/flatcar/scripts/blob/main/PREFIX.md) to create distro independent, portable, self-contained applications w/ all dependencies included. With contributions from [chewi](https://github.com/chewi) and [HappyTobi](https://github.com/HappyTobi).