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Tasklist

FS#74097 - [non-sequencer] Native CPU optimization mistakenly enabled

Attached to Project: Community Packages
Opened by rvalue (rvalue) - Friday, 11 March 2022, 18:56 GMT
Last edited by David Runge (dvzrv) - Sunday, 13 March 2022, 11:13 GMT
Task Type Bug Report
Category Packages
Status Closed
Assigned To David Runge (dvzrv)
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

Native CPU optimization is enabled by default during configuration since
upstream commit#7c071c74, but not disabled in PKGBUILD file.
This may cause problems if built with new CPUs with advanced ISA extensions
like AVX-512.

Additional info:

Upstream commit: https://github.com/linuxaudio/non/commit/7c071c742211c3915d06176e41f1b1936abcc9be
PKGBUILD code: https://github.com/archlinux/svntogit-community/blob/3912000f8c54baa9068c325310cb883245eda93d/trunk/PKGBUILD#L23

Suggested change:

--- PKGBUILD
+++ PKGBUILD
@@ -20,7 +20,7 @@ build() {

export LINKFLAGS="$LDFLAGS"
CXXFLAGS+=" -std=c++14"
- waf configure --prefix=/usr --project=sequencer
+ waf configure --prefix=/usr --project=sequencer --disable-native-cpu-optimization
waf
}

This task depends upon

Closed by  David Runge (dvzrv)
Sunday, 13 March 2022, 11:13 GMT
Reason for closing:  Fixed
Additional comments about closing:  Fixed with non-sequencer 1.10.0-2, non-{mixer,timeline} 1.3.0-4
Comment by rvalue (rvalue) - Friday, 11 March 2022, 19:12 GMT
Patch in gist:

https://gist.github.com/r-value/daa67d57c2a21123f45e0c8926cdab26
Comment by David Runge (dvzrv) - Sunday, 13 March 2022, 11:05 GMT
@rvalue: Thanks for the ticket and the suggested fix (the other non-* packages also suffer from this)!

I noticed this after packaging already, but am currently on the road and didn't have much time to investigate further.
The packages have indeed been built on our build server, which supports AVX512.

I will rebuild and disable the optmizations.

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