Document environment variables used by find_package in cmake-env-variables manual
The documentation of find_package at https://cmake.org/cmake/help/latest/command/find_package.html#search-procedure specifically in step 3, mentions that CMake will consider looking at the following environment variables when looking for a package:
<PackageName>_DIR
CMAKE_PREFIX_PATH
CMAKE_FRAMEWORK_PATH
CMAKE_APPBUNDLE_PATH
Yet those variables are not described at https://cmake.org/cmake/help/latest/manual/cmake-env-variables.7.html
I think for better discoverability, it would make sense to document those variables.
Edited by Brad King