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FC
--
.. versionadded:: 3.10
.. include:: ENV_VAR.txt
Preferred executable for compiling ``Fortran`` language files. Will only be used
by CMake on the first configuration to determine ``Fortran`` compiler, after
which the value for ``Fortran`` is stored in the cache as
:variable:`CMAKE_Fortran_COMPILER <CMAKE_<LANG>_COMPILER>`. For any
configuration run (including the first), the environment variable will be
ignored if the :variable:`CMAKE_Fortran_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 FC="custom-compiler --arg1 --arg2"
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