CMP0064ΒΆ
Added in version 3.4.
Recognize TEST as a operator for the if() command.
The TEST operator was added to the if() command to determine if a
given test name was created by the add_test() command.
The OLD behavior for this policy is to ignore the TEST operator.
The NEW behavior is to interpret the TEST operator.
This policy was introduced in CMake version 3.4.
It may be set by cmake_policy() or cmake_minimum_required().
If it is not set, CMake warns, and uses OLD behavior.
Note
The OLD behavior of a policy is
deprecated by definition
and may be removed in a future version of CMake.