linux-kernel - Re: [PATCH v3 11/12] selftests/nolibc: add new gettimeofday test cases

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Date:   Sun, 4 Jun 2023 13:46:06 +0200
From:   Willy Tarreau <w@....eu>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Zhangjin Wu <falcon@...ylab.org>,
        Thomas Weißschuh <thomas@...ch.de>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-kselftest <linux-kselftest@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>
Subject: Re: [PATCH v3 11/12] selftests/nolibc: add new gettimeofday test
 cases

On Sun, Jun 04, 2023 at 01:38:39PM +0200, Arnd Bergmann wrote:
> > Over time we managed
> > to make simple code compile with both glibc and nolibc, but when it
> > comes at the cost of adding size and burden for the developers, such
> > as forcing them to add libgcc, I prefer that we slightly limit the
> > domain of application instead.
> 
> Good point. This also reminds me that the compilers I build for
> https://mirrors.edge.kernel.org/pub/tools/crosstool/ don't always
> have every version of libgcc that may be needed, for instance
> the mips compilers only provide a big-endian libgcc and the
> arm compilers only provide a little-endian one, even though
> the compilers can build code both ways with the right flags.

That reminds me something indeed, I know that MIPS is a great platform
for testing portability due to libgcc and/or atomics not always being
complete depending how it's built. At work when I double-check that
haproxy still builds and starts on my EdgeRouter-X, then it will build
everywhere ;-)

Willy