cmake (3.31) `CMP0177` warning

details https://cmake.org/cmake/help/latest/policy/CMP0177.html

when configuring i ran into the following warning

```
[cmake] CMake Warning (dev) at CMakeLists.txt:184 (install):
[cmake] Policy CMP0177 is not set: install() DESTINATION paths are normalized. Run
[cmake] "cmake --help-policy CMP0177" for policy details. Use the cmake_policy
[cmake] command to set the policy and suppress this warning.
[cmake] This warning is for project developers. Use -Wno-dev to suppress it.
```

running `cmake --help-policy CMP0177` shows the same info from the link above