mirror of
https://github.com/wpilibsuite/allwpilib
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67 lines
1.7 KiB
Markdown
67 lines
1.7 KiB
Markdown
# Upstream utils
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## Layout
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Each thirdparty library has a Python script for updating it. They generally:
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1. Check out a thirdparty Git repository to a specific commit or tag
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2. Apply patch files to the thirdparty repo to fix things specific to our build
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3. Copy a subset of the thirdparty files into our repo
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4. Comment out any header includes that were invalidated, if needed
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`upstream_utils.py` contains utilities common to these update scripts.
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Patches are generated in the thirdparty repo with git's format-patch command so
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they can be applied as individual commits and easily rebased onto newer
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versions. Each library has its own patch directory (e.g., `lib_patches`).
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## Updating thirdparty library version
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The example below will update a hypothetical library called `lib` to the tag
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`2.0`.
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Start in the `upstream_utils` folder. Restore the original repo.
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```bash
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./update_lib.py
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```
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Navigate to the repo.
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```bash
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cd /tmp/lib
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```
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Fetch the desired version using one of the following methods.
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```bash
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# Fetch a full branch or tag
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git fetch origin 2.0
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# Fetch just a tag (useful for expensive-to-clone repos)
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git fetch --depth 1 origin tag 2.0
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```
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Rebase any patches onto the new version.
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```bash
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git rebase 2.0
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```
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Generate patch files for the new version.
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```bash
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git format-patch 2.0..HEAD --zero-commit --abbrev=40 --no-signature
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```
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Move the patch files to `upstream_utils`.
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```
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mv *.patch allwpilib/upstream_utils/lib_patches
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```
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Navigate back to `upstream_utils`
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```bash
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cd allwpilib/upstream_utils
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```
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Modify the version number in the call to `setup_upstream_repo()` in
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`update_lib.py`, then rerun `update_lib.py` to reimport the thirdparty files.
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```bash
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./update_lib.py
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```
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