Policy CMP0146 is not set: The FindCUDA module is removed

CMake Warning (dev) at CMakeLists.txt:8 (find_package):
  Policy CMP0146 is not set: The FindCUDA module is removed.  Run "cmake
  --help-policy CMP0146" for policy details.  Use the cmake_policy command to
  set the policy and suppress this warning.
 
This warning is for project developers.  Use -Wno-dev to suppress it.

如上CMakeLists.txt的警告，不影响正常编译结束，但是可以让这个警告去掉，让编译输出更干净。主要是因为cmake政策的更新导致的，可以仍使用旧版本的政策。

解决方案：

在CMakeLists.txt的 find_package(CUDA) 前面加上如下内容：

if(POLICY CMP0146)
  cmake_policy(SET CMP0146 OLD) 
endif()

如下：