diff --git a/scripts/check_generate_code.py b/scripts/check_generate_code.py
new file mode 100755
index 0000000..038dc4e
--- /dev/null
+++ b/scripts/check_generate_code.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+#
+# Copyright 2021 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.
+
+import platform
+import subprocess
+import sys
+from pathlib import Path
+
+# Get the path where this script is located so we can invoke the script from
+# any directory and have the paths work correctly.
+script_path = Path(__file__).parent.resolve()
+
+# Get the root path as an absolute path, so all derived paths are absolute.
+root_path = script_path.parent.absolute()
+
+result = subprocess.run(["git", "diff", "--quiet"], cwd=root_path)
+
+if result.returncode != 0:
+    print(
+        "\n"
+        "ERROR: *********************************************************\n"
+        "ERROR: * The following differences were found after building.  *\n"
+        "ERROR: * Perhaps there is a difference in the flags for the.   *\n"
+        "ERROR: * CMakeLists.txt vs the script/generate_code.py script? *\n"
+        "ERROR: *********************************************************\n"
+    )
+    subprocess.run(["git", "diff", "--binary", "--exit-code"], cwd=root_path)
+    sys.exit(result.returncode)
+
+# Rung the generate_code.py script, forwarding arguments
+gen_cmd = ["scripts/generate_code.py"] + sys.argv[1:]
+if platform.system() == "Windows":
+    gen_cmd = ["py"] + gen_cmd
+subprocess.run(gen_cmd, cwd=root_path)
+
+result = subprocess.run(["git", "diff", "--quiet"], cwd=root_path)
+
+if result.returncode != 0:
+    print(
+        "\n"
+        "ERROR: ********************************************************\n"
+        "ERROR: * The following differences were found after running   *\n"
+        "ERROR: * the script/generate_code.py script. Maybe you forgot *\n"
+        "ERROR: * to run it after making changes in a generator?       *\n"
+        "ERROR: ********************************************************\n"
+    )
+    subprocess.run(["git", "diff", "--binary", "--exit-code"], cwd=root_path)
+    sys.exit(result.returncode)
+
+sys.exit(0)