CTEST_INTERACTIVE_DEBUG_MODE
This is a CMake Environment Variable. Its initial value is taken from the calling process environment.
Environment variable that will exist and be set to 1 when a test executed by ctest(1) is run in interactive mode.
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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.15/envvar/CTEST_INTERACTIVE_DEBUG_MODE.html