CMP0107ΒΆ
It is not allowed to create an ALIAS target with the same name as an
another target.
In CMake 3.17 and below, an ALIAS target can overwrite silently an existing
target with the same name.
The OLD behavior for this policy is to allow target overwrite.
The NEW behavior of this policy is to prevent target overwriting.
This policy was introduced in CMake version 3.17. Use the
cmake_policy() command to set it to OLD or NEW explicitly.
Unlike many policies, CMake version 3.18.6 does not warn
when this 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.