Build system: handle library version updates and update u8g2 library #525
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
bradjc
force-pushed
the
make-lib-versions-u8g2
branch
from
307deed to
e5c2e1d
Compare
Add `Makefile.version` so a library can express a particular file that must exist for the library to be usable. If that file doesn't exist, the build system knows to run Makefile.setup. This supports updating a library, as even if the needed version changes the built artifacts will still exist and make will not rebuild them.
Update to a newer version that includes the fixes for include re-ordering.
alevy
force-pushed
the
make-lib-versions-u8g2
branch
from
e5c2e1d to
3cc1ed0
Compare
alevy
approved these changes
Jun 25, 2025
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR adds a feature to
AppMakefile.mdto rebuild libraries if their version updates. The issue is that if a user already has compiled output for a library, if the version changes that compiled output is still there and make doesn't know to rebuild. This change allows libraries to specify a particular file as a dependency that make can track, and if the version updates that file will not exist and the library gets rebuilt.This isn't necessary for completely new libraries as the pre-built files won't exist. This also doesn't affect libraries that only ever have one version.
As an example, I updated u8g2 to use this new feature.