[FTBFS] fails with cmake4

[LW-archlinux]

43faf6f

CMake Error at CMakeLists.txt:16 (CMAKE_MINIMUM_REQUIRED):
  Compatibility with CMake < 3.5 has been removed from CMake.

  Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
  to tell CMake that the project requires at least <min> but has been updated
  to work with policies introduced by <max> or earlier.

  Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.


-- Configuring incomplete, errors occurred!
==> ERROR: A failure occurred in build().

Using -DCMAKE_POLICY_VERSION_MINIMUM=3.5 does allow the build to continue.

[a17r]

#32