CMP0124ΒΆ
New in version 3.21.
The loop variables created by foreach()
command have now their scope
restricted to the loop scope.
Starting with CMake 3.21, the foreach()
command ensures that the loop
variables have their scope restricted to the loop scope.
The OLD
behavior for this policy let the loop variables to exist, with an
empty value, in the outer scope of loop scope.
This policy was introduced in CMake version 3.21. Use the
cmake_policy()
command to set it to OLD
or NEW
explicitly.
Unlike many policies, CMake version 3.21.0 does not warn when the policy
is not set and simply uses OLD
behavior.
Note
The OLD
behavior of a policy is
deprecated by definition
and may be removed in a future version of CMake.