Every module belonging to a single mainline module family will be
hidden from make, except the one which has been flagged using
apex_contributions
Details
- Introduce a new `source_apex_name` property to prebuilt_apex and
override_apex. This property will be used to identify the source
equivalent of a prebuilt soong apex module.
- Create an N-ary tree from source to prebuilt(s). The tree wil be
rooted at the source module.
- In a subsequent mutator, visit every node in the tree(s). Query
apex_contributions and store the handle of the node which is "active"
(if any)
- In the same mutator, do another pass over the tree. Invoke
`HideFromMake` on every node which is not "active". The two-pass
approach is needed PrebuiltSelectionInfoProvider does not know about
the inter source-prebuilt dependency, this dependency can only be
known by doing a graph walk of the N-ary tree.
Some tangential implementation details
- Each prebuilt apex has an internal deapxer module that is responsible
for generating the deapex ninja rules. The name of this internal
module uses the BaseModuleName (without the prebuilt_ prefix). Since
we can have multiple prebuilt soong modules in trunk stable, change
this to follow the name of the prebuilt module in order to avoid name
collisions. Update existing unit tests accordingly
Bug: 316179314
Test: go test ./apex -run TestInstallationRulesForMultipleApexPrebuilts
Test: m nothing --no-skip-soong-tests
Test: presubmits
Change-Id: I58aa99d5e6a9859954614e6db9a8e9e2e581642d
3576e769a4