Avoid circular dependency for the aconfig usage in libcore

Bug: 316554963
Test: m droid
Change-Id: I6f45e585b8b656ef7ce1d51bbde0a44898198907
diff --git a/aconfig/codegen/java_aconfig_library.go b/aconfig/codegen/java_aconfig_library.go
index 202e358..9c6cfd0 100644
--- a/aconfig/codegen/java_aconfig_library.go
+++ b/aconfig/codegen/java_aconfig_library.go
@@ -62,10 +62,18 @@
 		ctx.AddDependency(ctx.Module(), declarationsTag, declarations)
 	}
 
-	// Add aconfig-annotations-lib as a dependency for the optimization / code stripping annotations
-	module.AddSharedLibrary("aconfig-annotations-lib")
-	// TODO(b/303773055): Remove the annotation after access issue is resolved.
-	module.AddSharedLibrary("unsupportedappusage")
+	// "libcore_aconfig_flags_lib" module has a circular dependency because the shared libraries
+	// are built on core_current and the module is used to flag the APIs in the core_current.
+	// http://b/316554963#comment2 has the details of the circular dependency chain.
+	// If a java_aconfig_library uses "none" sdk_version, it should include and build these
+	// annotation files as the shared library themselves.
+	var addLibraries bool = module.Library.Module.SdkVersion(ctx).Kind != android.SdkNone
+	if addLibraries {
+		// Add aconfig-annotations-lib as a dependency for the optimization / code stripping annotations
+		module.AddSharedLibrary("aconfig-annotations-lib")
+		// TODO(b/303773055): Remove the annotation after access issue is resolved.
+		module.AddSharedLibrary("unsupportedappusage")
+	}
 }
 
 func (callbacks *JavaAconfigDeclarationsLibraryCallbacks) GenerateSourceJarBuildActions(module *java.GeneratedJavaLibraryModule, ctx android.ModuleContext) android.Path {