mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-10 04:29:11 -04:00
4a423645bc
The mte selftest Makefile contains a check for GCC, to add the memtag -march flag to the compiler options. This check fails if the compiler is not explicitly specified, so reverts to the standard "cc", in which case --version doesn't mention the "gcc" string we match against: $ cc --version | head -n 1 cc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0 This will not add the -march switch to the command line, so compilation fails: mte_helper.S: Assembler messages: mte_helper.S:25: Error: selected processor does not support `irg x0,x0,xzr' mte_helper.S:38: Error: selected processor does not support `gmi x1,x0,xzr' ... Actually clang accepts the same -march option as well, so we can just drop this check and add this unconditionally to the command line, to avoid any future issues with this check altogether (gcc actually prints basename(argv[0]) when called with --version). Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Mark Brown <broone@kernel.org> Link: https://lore.kernel.org/r/20210319165334.29213-2-andre.przywara@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.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.