FindBoost missing policy PUSH in 3.9.2 and 3.9.3
Since commit eddbd62d by @craig.scott the FindBoost.cmake perform a policy(POP) if the library is already found.
There is not corresponding policy(PUSH) in the file and thus the following error appears if the library is searched again:
CMake Error in C:/Program Files/CMake/share/cmake-3.9/Modules/FindBoost.cmake:
cmake_policy POP without matching PUSH
Edited by Brad King