CMAKE_MODULE_PATH
;-list of directories specifying a search path for CMake modules to be loaded by the the include()
or find_package()
commands before checking the default modules that come with CMake. By default it is empty, it is intended to be set by the project.
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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.5/variable/CMAKE_MODULE_PATH.html