diff --git a/libdl/Android.bp b/libdl/Android.bp
index 87db4b1..205c454 100644
--- a/libdl/Android.bp
+++ b/libdl/Android.bp
@@ -60,6 +60,8 @@
     native_bridge_supported: true,
     static_ndk_lib: true,
 
+    export_include_dirs: ["include_private"],
+
     defaults: [
         "linux_bionic_supported",
         "bug_24465209_workaround",
diff --git a/libdl/include_private/android/dlext_private.h b/libdl/include_private/android/dlext_private.h
new file mode 100644
index 0000000..fda1086
--- /dev/null
+++ b/libdl/include_private/android/dlext_private.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#pragma once
+
+#include <stdbool.h>
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+// TODO: libdl has several private extensions, but they have not all moved into a standard
+// private header.
+
+/**
+ * Set whether to load libraries in app compat mode.
+ *
+ * Any library which is not 16 KB aligned on a 4 KB aligned
+ * will be loaded in a special mode, which may load some R-only
+ * code as RW, in order to increase compatibility.
+ *
+ * \param enable_app_compat whether the mode is enabled for additional
+ *     library loads.
+ */
+void android_set_16kb_appcompat_mode(bool enable_app_compat);
+
+__END_DECLS