[Minor] Add derive notice to contrib/google-ced

diff --git a/contrib/google-ced/CMakeLists.txt b/contrib/google-ced/CMakeLists.txt
index e1c1c3edbeb469b01207f76286f85c481deb2db3..7fa698da93277411940357a8ace2dd58db02739c 100644 (file)
--- a/contrib/google-ced/CMakeLists.txt
+++ b/contrib/google-ced/CMakeLists.txt
@@ -1,6 +1,9 @@
 # Copyright 2016 Google Inc.  All Rights Reserved.
 # Use of this source code is governed by a BSD-style
 # license that can be found in the LICENSE file.
+#
+# This library is derived from https://github.com/google/compact_enc_det
+# git id: 37529e628fbac2e4c0d4d8520be9db789f316c9e
 
 project(CED CXX)
 set(CMAKE_SUPPRESS_DEVELOPER_WARNINGS 1 CACHE INTERNAL "No dev warnings")