Flag to control if generated SDK prebuilts are preferred.

This is needed because:
- the SDK prebuilt drop is being automated, including the Android.bp
- We want to control the prefer flag on a per-module level

It augments the existing SOONG_SDK_SNAPSHOT_PREFER which now overrides
this new flag when set to true.

Bug: 188427719
Test: m nothing
Change-Id: Ieb5ab9fab53a34c615345b7a9d19cadf713eec26

1 files changed, 8 insertions, 0 deletions

diff --git a/sdk/sdk.go b/sdk/sdk.go
index b1c8aebf9..afc6aa400 100644
--- a/sdk/sdk.go
+++ b/sdk/sdk.go
@@ -93,6 +93,10 @@ type sdkProperties struct {
 	//   dropped. Adding a rule to members that have //visibility:private will
 	//   cause the //visibility:private to be discarded.
 	Prebuilt_visibility []string
+
+	// Specifying whether the generated prebuilt SDK build rule should have the
+	// prefer flag set or not.
+	Prebuilts_prefer *bool // default: false
 }
 
 // Contains information about the sdk properties that list sdk members, e.g.
@@ -292,6 +296,10 @@ func (s *sdk) snapshot() bool {
 	return s.properties.Snapshot
 }
 
+func (s *sdk) PreferPrebuilts() bool {
+	return proptools.BoolDefault(s.properties.Prebuilts_prefer, false)
+}
+
 func (s *sdk) GenerateAndroidBuildActions(ctx android.ModuleContext) {
 	if s.snapshot() {
 		// We don't need to create a snapshot out of sdk_snapshot.