diff --git a/CMakeLists.txt b/CMakeLists.txt
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--- /dev/null
+++ b/CMakeLists.txt
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+# Copyright (c) 2022, Arm Limited and Contributors. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+# This CMakeLists.txt in the root of the repository ensures that, when another
+# project fetches CMSIS-DSP by calling FetchContent_MakeAvailable(), the call
+# automatically adds CMSIS-DSP as a subdirectory. To maintain compatibility with
+# existing projects that assume CMSIS-DSP's entry point to be Source/, we only
+# add a redirection in the root CMakeLists.txt.
+add_subdirectory(Source)