Rust cdylib/statliclib support for vendor snapshot.
Adds support for platform vendor_available Rust FFI libraries and
binaries to be included in the vendor snapshot.
Because rlib and dylibs are not yet in snapshots, libstd cannot be
included in a vendor snapshot. As a result, vendor-specific Rust code
can't be guaranteed to work with the platform-provided vendor_available
modules built with a newer toolchain. For now, a check is added
indicating vendor-specific Rust code is unsupported.
This changes the linkage for vendor variants of these modules to default
to rlib linkage since dylibs cannot be included in the snapshot yet.
Bug: 184042776
Test: m nothing # new Soong tests pass
Change-Id: I502eaa4bb962eb87ff868fcf49b435f0d2f982e6
diff --git a/rust/snapshot_utils.go b/rust/snapshot_utils.go
index 943c790..9d5154c 100644
--- a/rust/snapshot_utils.go
+++ b/rust/snapshot_utils.go
@@ -18,18 +18,34 @@
"android/soong/android"
)
+// snapshotLibraryInterface is an interface for libraries captured to VNDK / vendor snapshots.
+type snapshotLibraryInterface interface {
+ libraryInterface
+
+ // collectHeadersForSnapshot is called in GenerateAndroidBuildActions for snapshot aware
+ // modules (See isSnapshotAware below).
+ // This function should gather all headers needed for snapshot.
+ collectHeadersForSnapshot(ctx android.ModuleContext, deps PathDeps)
+
+ // snapshotHeaders should return collected headers by collectHeadersForSnapshot.
+ // Calling snapshotHeaders before collectHeadersForSnapshot is an error.
+ snapshotHeaders() android.Paths
+}
+
func (mod *Module) ExcludeFromVendorSnapshot() bool {
- // TODO Rust does not yet support snapshotting
- return false
+ return Bool(mod.Properties.Exclude_from_vendor_snapshot)
}
func (mod *Module) ExcludeFromRecoverySnapshot() bool {
- // TODO Rust does not yet support snapshotting
- return false
+ return Bool(mod.Properties.Exclude_from_recovery_snapshot)
}
func (mod *Module) IsSnapshotLibrary() bool {
- // TODO Rust does not yet support snapshotting
+ if lib, ok := mod.compiler.(libraryInterface); ok {
+ // Rust-native dylibs and rlibs are not snapshot supported yet, so only
+ // return true if this module produces a C shared or static library.
+ return lib.shared() || lib.static()
+ }
return false
}
@@ -39,8 +55,7 @@
}
func (mod *Module) SnapshotSharedLibs() []string {
- // TODO Rust does not yet support snapshotting
- return []string{}
+ return mod.Properties.SnapshotSharedLibs
}
func (mod *Module) Symlinks() []string {
@@ -49,6 +64,8 @@
}
func (m *Module) SnapshotHeaders() android.Paths {
- // TODO Rust does not yet support snapshotting
+ if l, ok := m.compiler.(snapshotLibraryInterface); ok {
+ return l.snapshotHeaders()
+ }
return android.Paths{}
}