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CMAKE_SUPPRESS_REGENERATION
---------------------------

If CMAKE_SUPPRESS_REGENERATION is ``OFF``, which is default, then CMake adds a
special target on which all other targets depend that checks the build system
and optionally re-runs CMake to regenerate the build system when the target
specification source changes.

If this variable evaluates to ``ON`` at the end of the top-level
``CMakeLists.txt`` file, CMake will not add the regeneration target to the
build system or perform any build system checks.