1# Build tool dependency policy 2 3To ensure the broadest compatibility when building the benchmark library, but 4still allow forward progress, we require any build tooling to be available for: 5 6* Debian stable _and_ 7* The last two Ubuntu LTS releases 8 9Currently, this means using build tool versions that are available for Ubuntu 1018.04 (Bionic Beaver), Ubuntu 20.04 (Focal Fossa), and Debian 11 (bullseye). 11 12_Note, CI also runs ubuntu-16.04 and ubuntu-14.04 to ensure best effort support 13for older versions._ 14 15## cmake 16The current supported version is cmake 3.5.1 as of 2018-06-06. 17 18_Note, this version is also available for Ubuntu 14.04, an older Ubuntu LTS 19release, as `cmake3`._ 20