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6212804f2d78e86f15dba5b46a4065cbf1403cde
'make M=/path/to/your/external/module' creates a pointless built-in.a in the top of the external module directory because KBUILD_BUILTIN is set to 1. Clear KBUILD_BUILTIN when we are building external modules so that 'make M=...' and 'make M=... modules' work equivalently. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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