CMP0045

警告

該方針的 OLD 行為已在 CMake 版本 4.0 中移除。該方針必須透過呼叫 cmake_minimum_required() 或 cmake_policy() 設定為 NEW。

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.