linux-kernel - Re: [PATCH 2/3] kbuild: prepare to remove C files pre-generated by flex and bison

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Date:   Sat, 9 Dec 2017 08:47:34 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kbuild@...r.kernel.org
Cc:     Ulf Magnusson <ulfalizer@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Nicholas Piggin <npiggin@...il.com>, linux-doc@...r.kernel.org,
        Markus Heiser <markus.heiser@...marit.de>,
        Jonathan Corbet <corbet@....net>, linux-kernel@...r.kernel.org,
        Michal Marek <michal.lkml@...kovi.net>,
        SeongJae Park <sj38.park@...il.com>,
        Max Filippov <jcmvbkbc@...il.com>
Subject: Re: [PATCH 2/3] kbuild: prepare to remove C files pre-generated by
 flex and bison

On 12/09/2017 08:02 AM, Masahiro Yamada wrote:
> 
> Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
> ---
> 
>  Documentation/process/changes.rst | 25 +++++++++++++++++++++++++
>  scripts/Makefile.lib              | 20 +++++++++++++++++---
>  2 files changed, 42 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/process/changes.rst b/Documentation/process/changes.rst
> index 560beae..fc9c7c3 100644
> --- a/Documentation/process/changes.rst
> +++ b/Documentation/process/changes.rst
> @@ -32,6 +32,8 @@ you probably needn't concern yourself with isdn4k-utils.
>  GNU C                  3.2              gcc --version
>  GNU make               3.81             make --version
>  binutils               2.20             ld -v
> +flex                   2.5.35           flex --version
> +bison                  2.0              bison --version
>  util-linux             2.10o            fdformat --version
>  module-init-tools      0.9.10           depmod -V
>  e2fsprogs              1.41.4           e2fsck -V
> @@ -79,6 +81,19 @@ The build system has, as of 4.13, switched to using thin archives (`ar T`)
>  rather than incremental linking (`ld -r`) for built-in.o intermediate steps.
>  This requires binutils 2.20 or newer.
>  
> +Flex
> +----
> +
> +Since Linux 4.16, the build system generates lexical analisers

                                                        analyzers
or                                                      analysers

> +during build.  This requires flex 2.5.35 or later.


thanks.
-- 
~Randy