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Filename : SWIFTC.rst

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SWIFTC
------

.. versionadded:: 3.15

.. include:: ENV_VAR.txt

Preferred executable for compiling ``Swift`` language files. Will only be used by
CMake on the first configuration to determine ``Swift`` compiler, after which the
value for ``SWIFTC`` is stored in the cache as
:variable:`CMAKE_Swift_COMPILER <CMAKE_<LANG>_COMPILER>`. For any configuration run
(including the first), the environment variable will be ignored if the
:variable:`CMAKE_Swift_COMPILER <CMAKE_<LANG>_COMPILER>` variable is defined.

.. note::
  Options that are required to make the compiler work correctly can be included;
  they can not be changed.

.. code-block:: console

  $ export SWIFTC="custom-compiler --arg1 --arg2"