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CMAKE_<LANG>_COMPILER_LAUNCHER
------------------------------

.. versionadded:: 3.4

Default value for :prop_tgt:`<LANG>_COMPILER_LAUNCHER` target property.
This variable is used to initialize the property on each target as it is
created.  This is done only when ``<LANG>`` is ``C``, ``CXX``, ``Fortran``,
``HIP``, ``ISPC``, ``OBJC``, ``OBJCXX``, or ``CUDA``.

This variable is initialized to the :envvar:`CMAKE_<LANG>_COMPILER_LAUNCHER`
environment variable if it is set.