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cmake/Help/variable/CMAKE_FASTBUILD_CAPTURE_SYSTEM_ENV.rst
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CMAKE_FASTBUILD_CAPTURE_SYSTEM_ENV
----------------------------------
.. versionadded:: 4.2
Controls capturing of the system environment into ``fbuild.bff``.
Setting it to ``OFF`` makes the invocation of all tools (compilers and other external processes) hermetic.
.. note::
Setting this variable to ``OFF`` can break MSVC toolchains that rely on
environment variables such as ``INCLUDE`` or ``LIB`` unless these are
manually configured elsewhere.
Defaults to ``ON``.