# CMakeLists.txt文件内容PROJECT(policy_test)CMAKE_POLICY(GET CMP0072 var)MESSAGE("CMP0072 behavior is: ${var}")# 命令行中调用 cmake-DCMAKE_POLICY_DEFAULT_CMP0000=OLD. >输出结果:>CMP0072 behavior is:>CMake Warning:Manually-specified variables were not used by the project:>`CMAKE_POLICY...