diff --git a/java/bootclasspath_fragment.go b/java/bootclasspath_fragment.go
index d8c5453..ec61e70 100644
--- a/java/bootclasspath_fragment.go
+++ b/java/bootclasspath_fragment.go
@@ -120,6 +120,15 @@
 	properties bootclasspathFragmentProperties
 }
 
+// commonBootclasspathFragment defines the methods that are implemented by both source and prebuilt
+// bootclasspath fragment modules.
+type commonBootclasspathFragment interface {
+	// produceHiddenAPIAllFlagsFile produces the all-flags.csv and intermediate files.
+	//
+	// Updates the supplied flagFileInfo with the paths to the generated files set.
+	produceHiddenAPIAllFlagsFile(ctx android.ModuleContext, contents []android.Module, stubJarsByKind map[android.SdkKind]android.Paths, flagFileInfo *hiddenAPIFlagFileInfo)
+}
+
 func bootclasspathFragmentFactory() android.Module {
 	m := &BootclasspathFragmentModule{}
 	m.AddProperties(&m.properties)
@@ -381,7 +390,7 @@
 	})
 
 	// Perform hidden API processing.
-	b.generateHiddenAPIBuildActions(ctx)
+	b.generateHiddenAPIBuildActions(ctx, contents)
 
 	// Construct the boot image info from the config.
 	info := BootclasspathFragmentApexContentInfo{
@@ -441,12 +450,7 @@
 }
 
 // generateHiddenAPIBuildActions generates all the hidden API related build rules.
-func (b *BootclasspathFragmentModule) generateHiddenAPIBuildActions(ctx android.ModuleContext) {
-	// Resolve the properties to paths.
-	flagFileInfo := b.properties.Hidden_api.hiddenAPIFlagFileInfo(ctx)
-
-	// Store the information for use by platform_bootclasspath.
-	ctx.SetProvider(hiddenAPIFlagFileInfoProvider, flagFileInfo)
+func (b *BootclasspathFragmentModule) generateHiddenAPIBuildActions(ctx android.ModuleContext, contents []android.Module) {
 
 	// Convert the kind specific lists of modules into kind specific lists of jars.
 	stubJarsByKind := hiddenAPIGatherStubLibDexJarPaths(ctx)
@@ -454,6 +458,33 @@
 	// Store the information for use by other modules.
 	bootclasspathApiInfo := bootclasspathApiInfo{stubJarsByKind: stubJarsByKind}
 	ctx.SetProvider(bootclasspathApiInfoProvider, bootclasspathApiInfo)
+
+	// Resolve the properties to paths.
+	flagFileInfo := b.properties.Hidden_api.hiddenAPIFlagFileInfo(ctx)
+
+	// Delegate the production of the hidden API all flags file to a module type specific method.
+	common := ctx.Module().(commonBootclasspathFragment)
+	common.produceHiddenAPIAllFlagsFile(ctx, contents, stubJarsByKind, &flagFileInfo)
+
+	// Store the information for use by platform_bootclasspath.
+	ctx.SetProvider(hiddenAPIFlagFileInfoProvider, flagFileInfo)
+}
+
+// produceHiddenAPIAllFlagsFile produces the hidden API all-flags.csv file (and supporting files)
+// for the fragment.
+func (b *BootclasspathFragmentModule) produceHiddenAPIAllFlagsFile(ctx android.ModuleContext, contents []android.Module, stubJarsByKind map[android.SdkKind]android.Paths, flagFileInfo *hiddenAPIFlagFileInfo) {
+	// If no stubs have been provided then don't perform hidden API processing. This is a temporary
+	// workaround to avoid existing bootclasspath_fragments that do not provide stubs breaking the
+	// build.
+	// TODO(b/179354495): Remove this workaround.
+	if len(stubJarsByKind) == 0 {
+		// Nothing to do.
+		return
+	}
+
+	// Generate the rules to create the hidden API flags and update the supplied flagFileInfo with the
+	// paths to the created files.
+	hiddenAPIGenerateAllFlagsForBootclasspathFragment(ctx, contents, stubJarsByKind, flagFileInfo)
 }
 
 // generateBootImageBuildActions generates ninja rules to create the boot image if required for this
@@ -534,6 +565,32 @@
 
 	// Flag files by *hiddenAPIFlagFileCategory
 	Flag_files_by_category map[*hiddenAPIFlagFileCategory]android.Paths
+
+	// The path to the generated stub-flags.csv file.
+	Stub_flags_path android.OptionalPath
+
+	// The path to the generated annotation-flags.csv file.
+	Annotation_flags_path android.OptionalPath
+
+	// The path to the generated metadata.csv file.
+	Metadata_path android.OptionalPath
+
+	// The path to the generated index.csv file.
+	Index_path android.OptionalPath
+
+	// The path to the generated all-flags.csv file.
+	All_flags_path android.OptionalPath
+}
+
+func pathsToOptionalPath(paths android.Paths) android.OptionalPath {
+	switch len(paths) {
+	case 0:
+		return android.OptionalPath{}
+	case 1:
+		return android.OptionalPathForPath(paths[0])
+	default:
+		panic(fmt.Errorf("expected 0 or 1 paths, found %q", paths))
+	}
 }
 
 func (b *bootclasspathFragmentSdkMemberProperties) PopulateFromVariant(ctx android.SdkMemberContext, variant android.Module) {
@@ -547,6 +604,13 @@
 	flagFileInfo := mctx.OtherModuleProvider(module, hiddenAPIFlagFileInfoProvider).(hiddenAPIFlagFileInfo)
 	b.Flag_files_by_category = flagFileInfo.categoryToPaths
 
+	// Copy all the generated file paths.
+	b.Stub_flags_path = pathsToOptionalPath(flagFileInfo.StubFlagsPaths)
+	b.Annotation_flags_path = pathsToOptionalPath(flagFileInfo.AnnotationFlagsPaths)
+	b.Metadata_path = pathsToOptionalPath(flagFileInfo.MetadataPaths)
+	b.Index_path = pathsToOptionalPath(flagFileInfo.IndexPaths)
+	b.All_flags_path = pathsToOptionalPath(flagFileInfo.AllFlagsPaths)
+
 	// Copy stub_libs properties.
 	b.Stub_libs = module.properties.Api.Stub_libs
 	b.Core_platform_stub_libs = module.properties.Core_platform_api.Stub_libs
@@ -573,14 +637,17 @@
 		corePlatformApiPropertySet.AddPropertyWithTag("stub_libs", b.Core_platform_stub_libs, requiredMemberDependency)
 	}
 
+	hiddenAPISet := propertySet.AddPropertySet("hidden_api")
+	hiddenAPIDir := "hiddenapi"
+
+	// Copy manually curated flag files specified on the bootclasspath_fragment.
 	if b.Flag_files_by_category != nil {
-		hiddenAPISet := propertySet.AddPropertySet("hidden_api")
 		for _, category := range hiddenAPIFlagFileCategories {
 			paths := b.Flag_files_by_category[category]
 			if len(paths) > 0 {
 				dests := []string{}
 				for _, p := range paths {
-					dest := filepath.Join("hiddenapi", p.Base())
+					dest := filepath.Join(hiddenAPIDir, p.Base())
 					builder.CopyToSnapshot(p, dest)
 					dests = append(dests, dest)
 				}
@@ -588,10 +655,47 @@
 			}
 		}
 	}
+
+	copyOptionalPath := func(path android.OptionalPath, property string) {
+		if path.Valid() {
+			p := path.Path()
+			dest := filepath.Join(hiddenAPIDir, p.Base())
+			builder.CopyToSnapshot(p, dest)
+			hiddenAPISet.AddProperty(property, dest)
+		}
+	}
+
+	// Copy all the generated files, if available.
+	copyOptionalPath(b.Stub_flags_path, "stub_flags")
+	copyOptionalPath(b.Annotation_flags_path, "annotation_flags")
+	copyOptionalPath(b.Metadata_path, "metadata")
+	copyOptionalPath(b.Index_path, "index")
+	copyOptionalPath(b.All_flags_path, "all_flags")
 }
 
 var _ android.SdkMemberType = (*bootclasspathFragmentMemberType)(nil)
 
+// prebuiltBootclasspathFragmentProperties contains additional prebuilt_bootclasspath_fragment
+// specific properties.
+type prebuiltBootclasspathFragmentProperties struct {
+	Hidden_api struct {
+		// The path to the stub-flags.csv file created by the bootclasspath_fragment.
+		Stub_flags *string `android:"path"`
+
+		// The path to the annotation-flags.csv file created by the bootclasspath_fragment.
+		Annotation_flags *string `android:"path"`
+
+		// The path to the metadata.csv file created by the bootclasspath_fragment.
+		Metadata *string `android:"path"`
+
+		// The path to the index.csv file created by the bootclasspath_fragment.
+		Index *string `android:"path"`
+
+		// The path to the all-flags.csv file created by the bootclasspath_fragment.
+		All_flags *string `android:"path"`
+	}
+}
+
 // A prebuilt version of the bootclasspath_fragment module.
 //
 // At the moment this is basically just a bootclasspath_fragment module that can be used as a
@@ -600,6 +704,9 @@
 type prebuiltBootclasspathFragmentModule struct {
 	BootclasspathFragmentModule
 	prebuilt android.Prebuilt
+
+	// Additional prebuilt specific properties.
+	prebuiltProperties prebuiltBootclasspathFragmentProperties
 }
 
 func (module *prebuiltBootclasspathFragmentModule) Prebuilt() *android.Prebuilt {
@@ -610,9 +717,29 @@
 	return module.prebuilt.Name(module.ModuleBase.Name())
 }
 
+// produceHiddenAPIAllFlagsFile returns a path to the prebuilt all-flags.csv or nil if none is
+// specified.
+func (module *prebuiltBootclasspathFragmentModule) produceHiddenAPIAllFlagsFile(ctx android.ModuleContext, _ []android.Module, _ map[android.SdkKind]android.Paths, flagFileInfo *hiddenAPIFlagFileInfo) {
+	pathsForOptionalSrc := func(src *string) android.Paths {
+		if src == nil {
+			// TODO(b/179354495): Fail if this is not provided once prebuilts have been updated.
+			return nil
+		}
+		return android.Paths{android.PathForModuleSrc(ctx, *src)}
+	}
+
+	flagFileInfo.StubFlagsPaths = pathsForOptionalSrc(module.prebuiltProperties.Hidden_api.Stub_flags)
+	flagFileInfo.AnnotationFlagsPaths = pathsForOptionalSrc(module.prebuiltProperties.Hidden_api.Annotation_flags)
+	flagFileInfo.MetadataPaths = pathsForOptionalSrc(module.prebuiltProperties.Hidden_api.Metadata)
+	flagFileInfo.IndexPaths = pathsForOptionalSrc(module.prebuiltProperties.Hidden_api.Index)
+	flagFileInfo.AllFlagsPaths = pathsForOptionalSrc(module.prebuiltProperties.Hidden_api.All_flags)
+}
+
+var _ commonBootclasspathFragment = (*prebuiltBootclasspathFragmentModule)(nil)
+
 func prebuiltBootclasspathFragmentFactory() android.Module {
 	m := &prebuiltBootclasspathFragmentModule{}
-	m.AddProperties(&m.properties)
+	m.AddProperties(&m.properties, &m.prebuiltProperties)
 	// This doesn't actually have any prebuilt files of its own so pass a placeholder for the srcs
 	// array.
 	android.InitPrebuiltModule(m, &[]string{"placeholder"})