New in CMake 3.20

CMake Deprecation Warning at CMakeLists.txt:17 (CMAKE_MINIMUM_REQUIRED):

  Compatibility with CMake < 2.8.12 will be removed from a future version of

  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell

  CMake that the project does not need compatibility with older versions.

CMake Deprecation Warning at libmariadb/CMakeLists.txt:5 (CMAKE_MINIMUM_REQUIRED):
Compatibility with CMake < 2.8.12 will be removed from a future version of
CMake.
...
CMake Deprecation Warning at storage/mroonga/CMakeLists.txt:20 (cmake_minimum_required):
Compatibility with CMake < 2.8.12 will be removed from a future version of
CMake.