| Summary: | media-libs/opencv-4.9.0 fails to build without CPU_FLAGS_ARM: neon | ||
|---|---|---|---|
| Product: | Gentoo Linux | Reporter: | James Calligeros <jcalligeros99> |
| Component: | Current packages | Assignee: | Paul Zander <negril.nx+gentoo> |
| Status: | IN_PROGRESS --- | ||
| Severity: | normal | CC: | jcalligeros99, leio, proxy-maint |
| Priority: | Normal | ||
| Version: | unspecified | ||
| Hardware: | ARM64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Package list: | Runtime testing required: | --- | |
| Attachments: |
emerge --info
build.log |
||
|
Description
James Calligeros
2024-04-13 06:16:45 UTC
Please provide emerge --info and attach a build log demonstrating the link failure. Created attachment 890747 [details]
emerge --info
Created attachment 890748 [details]
build.log
cpu_flags_arm_neon shouldn't be used on arm64 - it's really for 32-bit NEON. The problem is that this is undocumented, not even widely agreed on in more public mediums and not all packages actually unconditionally enable 64-bit NEON on arm64 arch. I am well aware of what the behaviour *should* be, hence the bug. I was discussing this with Paul on IRC and thus "documented" it here for his justification purposes to proxy maintainers or otherwise :) cpu_flags_arm_neon has been unmasked in https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=cebb6e2fdce12a8c5f81f1b19bd494469ace2786 I'll leave this bug open until the situation is cleared up so I have a reminder. |
