meson/docs/markdown/snippets/find_program_version.md

Version check in find_program()

A new version keyword argument has been added to find_program to specify the required version. See dependency() for argument format. The version of the program is determined by running program_name --version command. If stdout is empty it fallbacks to stderr. If the output contains more text than simply a version number, only the first occurence of numbers separated by dots is kept. If the output is more complicated than that, the version checking will have to be done manually using run_command().