CMAKE_SYSTEM_FRAMEWORK_PATH
Search path for OS X frameworks used by the find_library(), find_package(), find_path(), and find_file() commands. By default it contains the standard directories for the current system. It is not intended to be modified by the project, use CMAKE_FRAMEWORK_PATH for this.
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https://cmake.org/cmake/help/v3.5/variable/CMAKE_SYSTEM_FRAMEWORK_PATH.html