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0e1aa629f1
Nathan reported issue with cleaning empty build directory: $ make -s O=build distclean ../../scripts/Makefile.include:4: *** \ O=/ho...build/tools/bpf/resolve_btfids does not exist. Stop. The problem that tools scripts require existing output directory, otherwise it fails. Adding check around the resolve_btfids clean target to ensure the output directory is in place. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/bpf/20210211124004.1144344-1-jolsa@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.