linux-kernel - Re: [PATCH 04/12] kbuild: userprogs: add nolibc support

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Message-ID: <20250222094440.GB13258@1wt.eu>
Date: Sat, 22 Feb 2025 10:44:40 +0100
From: Willy Tarreau <w@....eu>
To: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Cc: Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nicolas Schier <nicolas@...sle.eu>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Thomas Weißschuh <linux@...ssschuh.net>,
        Brendan Higgins <brendan.higgins@...ux.dev>,
        David Gow <davidgow@...gle.com>, Rae Moar <rmoar@...gle.com>,
        Shuah Khan <shuah@...nel.org>, Jonathan Corbet <corbet@....net>,
        linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
        linux-doc@...r.kernel.org
Subject: Re: [PATCH 04/12] kbuild: userprogs: add nolibc support

On Mon, Feb 17, 2025 at 11:59:24AM +0100, Thomas Weißschuh wrote:
> Userprogs are built with the regular kernel compiler $CC.
> A kernel compiler does not necessarily contain a libc which is required
> for a normal userspace application.
> However the kernel tree does contain a minimal libc implementation
> "nolibc" which can be used to build userspace applications.
> 
> Introduce support to build userprogs against nolibc instead of the
> default C of the compiler, which may not exist.
          ^^^
"C library" or maybe "libc" I guess here.

Willy