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[3.14] gh-142020: ctypes docs: Note that find_library relies on the programs it runs (GH-142134) (GH-142748)

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Co-authored-by: Petr Viktorin <encukou@gmail.com>
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Doc/library/ctypes.rst
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@ -1388,6 +1388,9 @@ On Linux, :func:`~ctypes.util.find_library` tries to run external programs
(``/sbin/ldconfig``, ``gcc``, ``objdump`` and ``ld``) to find the library file.
It returns the filename of the library file.
Note that if the output of these programs does not correspond to the dynamic
linker used by Python, the result of this function may be misleading.
.. versionchanged:: 3.6
On Linux, the value of the environment variable ``LD_LIBRARY_PATH`` is used
when searching for libraries, if a library cannot be found by any other means.
@ -2132,6 +2135,8 @@ Utility functions
The exact functionality is system dependent.
See :ref:`ctypes-finding-shared-libraries` for complete documentation.
.. function:: find_msvcrt()
:module: ctypes.util