diff --git a/java/config/makevars.go b/java/config/makevars.go
new file mode 100644
index 0000000..6702454
--- /dev/null
+++ b/java/config/makevars.go
@@ -0,0 +1,29 @@
+// Copyright 2017 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package config
+
+import (
+	"strings"
+
+	"android/soong/android"
+)
+
+func init() {
+	android.RegisterMakeVarsProvider(pctx, makeVarsProvider)
+}
+
+func makeVarsProvider(ctx android.MakeVarsContext) {
+	ctx.Strict("TARGET_DEFAULT_JAVA_LIBRARIES", strings.Join(DefaultLibraries, " "))
+}