Merge "Disable dexpreopt if optional_uses_libs does not have an impl" into main

java/app.go

@@ -778,6 +778,9 @@ func (a *AndroidApp) generateAndroidBuildActions(ctx android.ModuleContext) {
 	a.onDeviceDir = android.InstallPathToOnDevicePath(ctx, a.installDir)
 
 	a.classLoaderContexts = a.usesLibrary.classLoaderContextForUsesLibDeps(ctx)
+	if a.usesLibrary.shouldDisableDexpreopt {
+		a.dexpreopter.disableDexpreopt()
+	}
 
 	var noticeAssetPath android.WritablePath
 	if Bool(a.appProperties.Embed_notices) || ctx.Config().IsEnvTrue("ALWAYS_EMBED_NOTICES") {
@@ -1566,6 +1569,9 @@ type usesLibrary struct {
 
 	// Whether to enforce verify_uses_library check.
 	enforce bool
+
+	// Whether dexpreopt should be disabled
+	shouldDisableDexpreopt bool
 }
 
 func (u *usesLibrary) addLib(lib string, optional bool) {
@@ -1647,6 +1653,15 @@ func (u *usesLibrary) classLoaderContextForUsesLibDeps(ctx android.ModuleContext
 			}
 		}
 
+		// Skip java_sdk_library dependencies that provide stubs, but not an implementation.
+		// This will be restricted to optional_uses_libs
+		if sdklib, ok := m.(SdkLibraryDependency); ok {
+			if tag == usesLibOptTag && sdklib.DexJarBuildPath(ctx).PathOrNil() == nil {
+				u.shouldDisableDexpreopt = true
+				return
+			}
+		}
+
 		if lib, ok := m.(UsesLibraryDependency); ok {
 			libName := dep
 			if ulib, ok := m.(ProvidesUsesLib); ok && ulib.ProvidesUsesLib() != nil {