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Andrii Nakryiko
cc6fa77102
Add detection of out-of-tree built vmlinux image for the purpose of VMLINUX_BTF detection. According to Documentation/kbuild/kbuild.rst, O takes precedence over KBUILD_OUTPUT. Also ensure ~/path/to/build/dir also works by relying on wildcard's resolution first, but then applying $(abspath) at the end to also handle O=../../whatever cases. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200304184336.165766-1-andriin@fb.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.