Is there a way to detect whether cmake is being run as a sudo or root user?

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I would like to detect whether the CMakeLists.txt file is run with sudo priveleges, so that an application for example on macOS can be installed to the /Application directory while if it is not, it installed into CMAKE_INSTALL_PREFIX/bin.

Can this be done somehow?

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A better approach would be to always install to ${CMAKE_INSTALL_PREFIX}/bin, configure with -DCMAKE_INSTALL_PREFIX=/Applications/MyApp, and then install with sudo cmake --install .

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Or even better, use CPack’s productbuild or DragNDrop generator.

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