autotools install-strip (#4211)

Author: memsharded

reference/tools/gnu/autotools.rst

@@ -38,6 +38,18 @@ Reference
     :members:
 
 
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+conf
+----
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+The ``Autotools`` build helper is affected by these ``[conf]`` variables:
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+- ``tools.gnu:make_program`` allows to define which ``make`` executable is being used. This will default for ``mingw32-make`` for MinGW builds or to ``make`` for any other build.
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+- ``tools.build:install_strip`` (Since Conan 2.20.0) will define in the ``Autotools.install()`` method the ``make install-strip`` target if set to ``True``, otherwise it will use the ``make install`` target.
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+
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 A note about relocatable shared libraries in macOS built the  Autotools build helper
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