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From: Thomas Petazzoni via buildroot <buildroot@buildroot.org>
To: Yegor Yefremov <yegorslists@googlemail.com>
Cc: buildroot@buildroot.org, Pierre-Jean Texier <texier.pj2@gmail.com>
Subject: Re: [Buildroot] [PATCH v2] package/stunnel: fix build on ARM Thumb-1
Date: Sun, 20 Sep 2026 15:45:15 +0200	[thread overview]
Message-ID: <aq_jZkrdAW8uhOCa@windsurf> (raw)
In-Reply-To: <20260917125242.1307618-1-yegorslists@gmail.com>

On Thu, Sep 17, 2026 at 02:52:42PM +0200, Yegor Yefremov via buildroot wrote:
> From: Yegor Yefremov <yegorslists@googlemail.com>
> 
> stunnel's configure unconditionally probes -fstack-clash-protection
> using AX_APPEND_COMPILE_FLAGS. The probe compiles a trivial conftest.c,
> which succeeds, so the flag ends up in CFLAGS. However, on ARM Thumb-1
> gcc implements stack clash protection through -fstack-check=specific,
> which it refuses for any real function body, so every source file fails
> to build:
> 
>   stunnel.c:1003:1: sorry, unimplemented: '-fstack-check=specific' for Thumb-1
> 
> Force the corresponding autoconf cache variable to "no" on Thumb-1, in
> the same way cmocka already works around this gcc limitation, and
> consistently with the existing -fstack-protector-strong override.
> 
> Fixes:
> https://autobuild.buildroot.org/results/3d691184ba83ba4d881632f2b2bb4da5aa50f491/
> 
> Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
> Assisted-by: Claude:claude-opus-5

Applied to master, thanks!

Best regards,

Thomas Petazzoni
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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  reply	other threads:[~2026-09-20 13:45 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-17 12:52 [Buildroot] [PATCH v2] package/stunnel: fix build on ARM Thumb-1 Yegor Yefremov via buildroot
2026-09-20 13:45 ` Thomas Petazzoni via buildroot [this message]
2026-09-25 14:46 ` Raphaël Mélotte via buildroot

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