diff --git a/java/hiddenapi_singleton.go b/java/hiddenapi_singleton.go
index 9826baf..43d54bf 100644
--- a/java/hiddenapi_singleton.go
+++ b/java/hiddenapi_singleton.go
@@ -149,15 +149,6 @@
 	}
 }
 
-// Export paths to Make.  INTERNAL_PLATFORM_HIDDENAPI_FLAGS is used by Make rules in art/ and cts/.
-func (h *hiddenAPISingleton) MakeVars(ctx android.MakeVarsContext) {
-	if ctx.Config().IsEnvTrue("UNSAFE_DISABLE_HIDDENAPI_FLAGS") {
-		return
-	}
-
-	ctx.Strict("INTERNAL_PLATFORM_HIDDENAPI_FLAGS", h.flags.String())
-}
-
 // Checks to see whether the supplied module variant is in the list of boot jars.
 //
 // This is similar to logic in getBootImageJar() so any changes needed here are likely to be needed
diff --git a/java/platform_bootclasspath.go b/java/platform_bootclasspath.go
index d341591..9f16294 100644
--- a/java/platform_bootclasspath.go
+++ b/java/platform_bootclasspath.go
@@ -163,7 +163,7 @@
 }
 
 func (d *platformBootclasspathModule) MakeVars(ctx android.MakeVarsContext) {
-	// Placeholder for now.
+	d.generateHiddenApiMakeVars(ctx)
 }
 
 func (b *platformBootclasspathModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
@@ -319,6 +319,16 @@
 	rule.Build("platform-bootclasspath-monolithic-hiddenapi-metadata", "monolithic hidden API metadata")
 }
 
+// generateHiddenApiMakeVars generates make variables needed by hidden API related make rules, e.g.
+// veridex and run-appcompat.
+func (b *platformBootclasspathModule) generateHiddenApiMakeVars(ctx android.MakeVarsContext) {
+	if ctx.Config().IsEnvTrue("UNSAFE_DISABLE_HIDDENAPI_FLAGS") {
+		return
+	}
+	// INTERNAL_PLATFORM_HIDDENAPI_FLAGS is used by Make rules in art/ and cts/.
+	ctx.Strict("INTERNAL_PLATFORM_HIDDENAPI_FLAGS", b.hiddenAPIFlagsCSV.String())
+}
+
 // generateBootImageBuildActions generates ninja rules related to the boot image creation.
 func (b *platformBootclasspathModule) generateBootImageBuildActions(ctx android.ModuleContext, updatableModules []android.Module) {
 	// Force the GlobalSoongConfig to be created and cached for use by the dex_bootjars