I was trying to control generation of install rules at a sub-directory level. But it appears that setting CMAKE_SKIP_INSTALL_RULES only works when setting in the scope of the top-level CMake file.
This was being done because some fetched projects try to install items that are not being built nor wanted to be part of the install package.
Changing this value in a sub-directory has no effect.
Is there a way control install rule generation at a directory level?