Bug 927813

Summary:	dev-qt/qtmultimedia-5.15.12 does not emerge in profile default/linux/amd64/23.0/split-usr/desktop/plasma
Product:	Gentoo Linux	Reporter:	Stefan Trenker <strenker>
Component:	Current packages	Assignee:	Qt Bug Alias <qt>
Status:	UNCONFIRMED ---
Severity:	normal	CC:	ionen, strenker
Priority:	Normal
Version:	unspecified
Hardware:	AMD64
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	emerge log emerge --info cpu flags

Description Stefan Trenker 2024-03-25 14:13:27 UTC

emerge -1 =dev-qt/qtmultimedia-5.15.12 fails after profile change from 17.1 (default/linux/amd64/17.1/desktop/plasma) to 23.0 (default/linux/amd64/23.0/split-usr/desktop/plasma)

Under 17.1 it emerges w/o any problems, under 23.0 it bails out. Please see attached logs.

Problem seems to be Intel AVX related in combination with embedded assembler code.

Reproducible: Always

Comment 1 Stefan Trenker 2024-03-25 14:14:13 UTC

Created attachment 888542 [details]
emerge log

Comment 2 Stefan Trenker 2024-03-25 14:15:07 UTC

Created attachment 888543 [details]
emerge --info

Comment 3 Stefan Trenker 2024-03-25 14:15:51 UTC

Created attachment 888544 [details]
cpu flags

Comment 4 Stefan Trenker 2024-03-25 14:16:25 UTC

Changed Platform to amd64

Comment 5 Ionen Wolkens gentoo-dev

2024-03-25 14:24:58 UTC

>CXXFLAGS="-O2 -pipe"
Have you tried with -march=native added?

Not that things should normally fail if omitted (haven't tried), unless.. you *used* to have it set and Qt (that has a tendency to remember things that were used to build qtcore/qtbase) is now confused.

Comment 6 Stefan Trenker 2024-03-25 14:53:47 UTC

Good hint!

Creating a file /etc/portage/env/dev-qt/qtmultimedia-5.15.12 containing:

CFLAGS="-march=native -O2 -pipe"       
CXXFLAGS="-march=native -O2 -pipe"       


works as workaround.

But it should somehow be fixed in the ebuild itself.