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CMAKE_<LANG>_COMPILER
---------------------
The full path to the compiler for ``LANG``.
This is the command that will be used as the ``<LANG>`` compiler. Once
set, you can not change this variable.
Usage
^^^^^
This variable can be set by the user during the first time a build tree is configured.
If a non-full path value is supplied then CMake will resolve the full path of
the compiler.
The variable could be set in a user supplied toolchain file or via `-D` on the command line.
.. note::
Options that are required to make the compiler work correctly can be included
as items in a list; they can not be changed.
.. code-block:: cmake
#set within user supplied toolchain file
set(CMAKE_C_COMPILER /full/path/to/qcc --arg1 --arg2)
or
.. code-block:: console
$ cmake ... -DCMAKE_C_COMPILER='qcc;--arg1;--arg2'
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