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Nathan Chancellor 0664684e1e kbuild: Add -Werror=ignored-optimization-argument to CLANG_FLAGS Similar to commit `589834b3a0` ("kbuild: Add -Werror=unknown-warning-option to CLANG_FLAGS"). Clang ignores certain GCC flags that it has not implemented, only emitting a warning: $ echo \| clang -fsyntax-only -falign-jumps -x c - clang-14: warning: optimization flag '-falign-jumps' is not supported [-Wignored-optimization-argument] When one of these flags gets added to KBUILD_CFLAGS unconditionally, all subsequent cc-{disable-warning,option} calls fail because -Werror was added to these invocations to turn the above warning and the equivalent -W flag warning into errors. To catch the presence of these flags earlier, turn -Wignored-optimization-argument into an error so that the flags can either be implemented or ignored via cc-option and there are no more weird errors. Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>		2021-09-19 10:55:18 +09:00
arch	x86/build: Do not add -falign flags unconditionally for clang	2021-09-19 10:35:53 +09:00
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scripts	kbuild: Add -Werror=ignored-optimization-argument to CLANG_FLAGS	2021-09-19 10:55:18 +09:00
security
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tools	perf tools changes for v5.15: 2nd batch	2021-09-12 16:18:15 -07:00
usr
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Makefile	Linux 5.15-rc1	2021-09-12 16:28:37 -07:00
README

README

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.