Date: Fri, 27 May 2022 11:52:27 -0400
From: Roger <rogerx.oss@gmail.com>
To: ~alpine/users@lists.alpinelinux.org
Subject: Re: Can't start neovim
Message-ID: <YpDzu6H7hxccLZ24@4void.local>
References: <CADH9QNoHup814iMEzuALEOb2RzjoPun0FpJ86Aoyf+254yMHfg@mail.gmail.com>
 <CKABOUO79C9A.2GI24CI6UJ6TJ@sumire>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;
	protocol="application/pgp-signature"; boundary="Fiwr2+GTlqocrtHe"
Content-Disposition: inline
In-Reply-To: <CKABOUO79C9A.2GI24CI6UJ6TJ@sumire>


--Fiwr2+GTlqocrtHe
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

Quite funny and odd neovim would pull in SSE2 (...) opts!

=46rom my recent experience with a recent laptop (Dell Inspiron 8100) lapto=
p=20
install of Alpine 3.15.4, everything seems to be compiled just fine for=20
non-SSE2 CPUs.

Sounds like SSE2 CPU opts are now creeping into Alpine Linux 3.16, like so =
many=20
other packages.  (From reading many forum posts for the past years, seems s=
ome=20
are having fun with this issue, anything to cause a problem for others!)

I started a forum thread on Linux Questions recently, due to the amount of=
=20
Linux distributions stating support for older CPUs.

Distributions Falsely Advertising <=3D i686/Pentium3 support, or CPUs witho=
ut SSE2!
https://www.linuxquestions.org/questions/slackware-14/distributions-falsely=
-advertising-=3D-i686-pentium3-support-or-cpus-without-sse2-4175712442/

At the time of the posting, I was agnostically suggesting other Linux=20
distributions.  I've been monitoring CPU SSE2 opt (eg. CFLAG, CXXFLAGS, ...=
)=20
inclusion for the recent few years now, as I have two well maintained x86=
=20
Pentium 3 non-SSE2 platforms.

Roger

> On Fri, May 27, 2022 at 08:16:34AM +0200, alice wrote:
>On Fri May 27, 2022 at 6:42 AM CEST, Samarul Meu wrote:
>> I am on Alpine 3.16 (upgraded on Wednesday) and yesterday I installed
>> neovim. When I try to launch it I only get this `Illegal instruction`
>>
>> Some more information
>>
>> $ uname -a
>> Linux alpine.cfd 5.15.41-0-lts #1-Alpine SMP Fri, 20 May 2022 21:42:55
>> +0000 x86_64 GNU/Linux
>>
>> $ nvim -v
>> NVIM v0.7.0
>> Illegal instruction
>this is probably because the luajit apkbuild has -msse4.2 for x86_64.
>there is already an issue for it[0], not sure i remember why it was set
>that way (aside from being recommended).
>
>you can see by crashing it in gdb: =20
>
>gdb nvim
>run
>(see it crash)
>x/3i $pc (last 3 instructions)
>
>(last instructions will have names, look up the one marked with >,
>probably an sse4/3 one)
>
>> $ cat /etc/apk/repositories
>> http://ftp.halifax.rwth-aachen.de/alpine/latest-stable/main
>> http://ftp.halifax.rwth-aachen.de/alpine/latest-stable/community
>> @edge http://ftp.halifax.rwth-aachen.de/alpine/edge/main
>> @edge http://ftp.halifax.rwth-aachen.de/alpine/edge/community
>> @testing http://ftp.halifax.rwth-aachen.de/alpine/edge/testing
>(as an aside, you should not mix edge with stable)
>
>> $ doas dmesg | grep nvim
>> [  818.148617] traps: nvim[3261] trap invalid opcode ip:7f61f0d819d3
>> sp:7fffaad810e0 error:0 in libluajit-5.1.so.2.1.0[7f61f0d6f000+4c000]
>> [ 1081.218916] traps: nvim[3461] trap invalid opcode ip:7f8742fa79d3
>> sp:7fffcecf42c0 error:0 in libluajit-5.1.so.2.1.0[7f8742f95000+4c000]
>> [ 1160.212726] traps: nvim[3522] trap invalid opcode ip:7f65de9b29d3
>> sp:7fff3de8ed60 error:0 in libluajit-5.1.so.2.1.0[7f65de9a0000+4c000]
>> [ 1163.965717] traps: nvim[3527] trap invalid opcode ip:7f67763929d3
>> sp:7ffcc468ead0 error:0 in libluajit-5.1.so.2.1.0[7f6776380000+4c000]
>>
>>
>> Thanks for your help!
>
>[0]: https://gitlab.alpinelinux.org/alpine/aports/-/issues/13688

--Fiwr2+GTlqocrtHe
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iQEzBAABCAAdFiEE9RWsHyMf/E7wvN52Bs6g7OKIfHUFAmKQ87gACgkQBs6g7OKI
fHUVhQf/QgTZxwU5T+tzFyek22bm0BBTLxU3AOhIVFH9iHCSiaCZduxNZ7FWzg0H
h09/O4tO5h5EO+eqbY46cmMMGu3BoK1zwU11gQUNm0vpMySlDoOGq3VnL8XulsRB
/y5M4qXhs/IH+Gv1TfSRtIbS9QaBFTfvtBHRVTg4M4KNx2SYaQw9417CPMEoC0W8
4lWk15ql5YOiiGjVuhDcKv0Bbo3qIhwPFJybu5AoPnax/JG4D4f3vbeNm19zj0ci
d3gpqxUWWBYA5Wzn5Q5S6eEsqkyqyGLlvG+faSduIIvSFy4/lakYuGGp1f+nHBIl
cWIXQBDl1F6qS2o1JhUy92lQewXbNQ==
=6Kju
-----END PGP SIGNATURE-----

--Fiwr2+GTlqocrtHe--