CMP0045ΒΆ
Warning
The OLD behavior of this policy was removed
in CMake version 4.0.
This policy must be set to NEW by a call to
cmake_minimum_required() or cmake_policy().
Error on non-existent target in get_target_property.
In CMake 2.8.12 and lower, the get_target_property() command accepted
a non-existent target argument without issuing any error or warning. The
result variable is set to a -NOTFOUND value.
The OLD behavior for this policy is to issue no warning and set the result
variable to a -NOTFOUND value. The NEW behavior
for this policy is to issue a FATAL_ERROR if the command is called with a
non-existent target.
This policy was introduced in CMake version 3.0.
Prior to removal in CMake version 4.0, it could be
set by cmake_policy() or cmake_minimum_required().
If it was not set, CMake warned, and used OLD behavior.