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1747269ab0
When building external modules, $(objtree)/Module.symvers is scanned for symbol information of vmlinux and in-tree modules. Additionally, vmlinux is parsed if it exists in $(objtree)/. This is totally redundant since all the necessary information is contained in $(objtree)/Module.symvers. Do not parse vmlinux at all for external module builds. This makes sense because vmlinux is deleted by 'make clean'. 'make clean' leaves all the build artifacts for building external modules. vmlinux is unneeded for that. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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.