CMAKE_ROLE

Tells what mode the current running script is in. Could be one of several values:

PROJECT

Running in project mode (processing a CMakeLists.txt file).

SCRIPT

Running in -P script mode.

FIND_PACKAGE

Running in --find-package mode.

CTEST

Running in CTest script mode.

CPACK

Running in CPack.

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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.15/prop_gbl/CMAKE_ROLE.html