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+# Build tool dependency policy
+
+We follow the [Foundational C++ support policy](https://opensource.google/documentation/policies/cplusplus-support) for our build tools. In
+particular the ["Build Systems" section](https://opensource.google/documentation/policies/cplusplus-support#build-systems).
+
+## CMake
+
+The current supported version is CMake 3.10 as of 2023-08-10. Most modern
+distributions include newer versions, for example:
+
+* Ubuntu 20.04 provides CMake 3.16.3
+* Debian 11.4 provides CMake 3.18.4
+* Ubuntu 22.04 provides CMake 3.22.1