Build tool dependency policy

To ensure the broadest compatibility when building the benchmark library, but still allow forward progress, we require any build tooling to be available for:

• Debian stable and
• The last two Ubuntu LTS releases

Currently, this means using build tool versions that are available for Ubuntu Ubuntu 20.04 (Focal Fossa), Ubuntu 22.04 (Jammy Jellyfish) and Debian 11.4 (bullseye).

Note, CI also runs ubuntu-18.04 to attempt best effort support for older versions.

cmake

The current supported version is cmake 3.16.3 as of 2022-08-10.

• 3.10.2 (ubuntu 18.04)
• 3.16.3 (ubuntu 20.04)
• 3.18.4 (debian 11.4)
• 3.22.1 (ubuntu 22.04)