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From: Vagrant Cascadian <vagrant@reproducible-builds.org>
To: 48591@debbugs.gnu.org
Cc: kiasoc5 <kiasoc5@disroot.org>,
	Christopher Howard <christopher@librehacker.com>,
	zimoun <zimon.toutoune@gmail.com>,
	raingloom <raingloom@riseup.net>,
	Leo Famulari <leo@famulari.name>
Subject: bug#48591: ugrep: reproducibility issues
Date: Thu, 24 Oct 2024 12:04:45 -0700	[thread overview]
Message-ID: <87y12d8gqa.fsf@wireframe> (raw)
In-Reply-To: <f88e8548-3555-372a-9043-2c03484b64be@disroot.org>

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On 2023-01-16, kiasoc5 wrote:
> Is this bug fixed yet?
>
> If not, seeing that this issue was motivated by an illegal instruction, 
> we can use compile flags to disable SSE and other platform-dependent 
> optimizations and investigate further.
>
> WDYT?
>
> https://github.com/Genivia/ugrep#other-platforms-step-3-build

--disable-sse2 disable SSE2 and AVX optimizations
--disable-avx2 disable AVX2 and AVX512BW optimizations, but compile with SSE2 when supported
--disable-neon disable ARM NEON/AArch64 optimizations

Seems like --disable-sse2 on x86_64 and x86 (32-bit) and --disable-neon
(armhf, maybe aarch64) would be needed to make the build independent of
which cpu it runs on.


FWIW, debian disables several of these (--disable-sse2 and
--disable-neon), although also passes --disable-avx which is not mentioned in
the upstream documentation, although is present in configure.ac...

  https://salsa.debian.org/debian/ugrep/-/blob/7e2383dfaec23d58587f53c31ce46ef884513975/debian/rules#L5-13


live well,
  vagrant

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      reply	other threads:[~2024-10-24 19:06 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-22 20:19 bug#48591: ugrep: illegal instruction Christopher Howard
2021-05-22 22:46 ` Christopher Howard
2021-05-24 17:22 ` Leo Famulari
2021-06-30 21:41   ` raingloom
2021-07-02  2:23     ` Leo Famulari
2021-07-02 11:24 ` zimoun
2023-01-17  1:37 ` bug#48591: ugrep: reproducibility issues kiasoc5 via Bug reports for GNU Guix
2024-10-24 19:04   ` Vagrant Cascadian [this message]

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