Bug 934582

Summary:	dev-qt/qtmultimedia-6.7.2[gstreamer,-v4l]: undefined references to QGstreamerCustomCamera
Product:	Gentoo Linux	Reporter:	Aliaksei Urbanski <aliaksei.urbanski>
Component:	Current packages	Assignee:	Qt Bug Alias <qt>
Status:	RESOLVED FIXED
Severity:	normal	CC:	ionen
Priority:	Normal	Keywords:	PullRequest
Version:	unspecified
Hardware:	All
OS:	Linux
See Also:	https://github.com/gentoo/gentoo/pull/37221
Whiteboard:	workaround applied
Package list:		Runtime testing required:	---
Attachments:	build log

Description Aliaksei Urbanski 2024-06-20 02:07:02 UTC

Hello everyone,

It's not possible to build Qt Multimedia 6.7.2 with GStreamer but with no V4L.

Reproducible: Always

Steps to Reproduce:
USE="gstreamer -v4l" emerge =dev-qt/qtmultimedia-6.7.2
Actual Results:  
Build fails due to undefined references to QGstreamerCustomCamera.

Expected Results:  
dev-qt/qtmultimedia-6.7.2 has been built and installed.

The bug was introduced in https://code.qt.io/cgit/qt/qtmultimedia.git/commit/?id=19dad4ec5
(cherry picked from https://code.qt.io/cgit/qt/qtmultimedia.git/commit/?id=f865bbd6)

Comment 1 Ionen Wolkens gentoo-dev

2024-06-20 02:13:39 UTC

Please emerge --sync, v4l already been forced as a workaround in [1].

I'll leave this open until properly resolved though.

[1] https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=ea66dd695e44

Comment 2 Ionen Wolkens gentoo-dev

2024-06-20 02:18:48 UTC

Also been debating whether it's worth being optional at all given this has no extra dependencies beside linux-headers and is trivial to build (doesn't use libv4l). Albeit non-linux prefixes could be a concern.

Comment 3 Aliaksei Urbanski 2024-06-20 02:20:22 UTC

Created attachment 896123 [details]
build log

Comment 4 Larry the Git Cow gentoo-dev

2024-06-20 07:59:33 UTC

The bug has been closed via the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=a531b45362dc7f478d5d449307df33c32ba4a41c

commit a531b45362dc7f478d5d449307df33c32ba4a41c
Author:     Aliaksei Urbanski <aliaksei.urbanski@gmail.com>
AuthorDate: 2024-06-20 02:33:54 +0000
Commit:     Ionen Wolkens <ionen@gentoo.org>
CommitDate: 2024-06-20 07:58:46 +0000

    dev-qt/qtmultimedia: fix build with [gstreamer,-v4l]
    
    Closes: https://bugs.gentoo.org/934582
    Signed-off-by: Aliaksei Urbanski <aliaksei.urbanski@gmail.com>
    Closes: https://github.com/gentoo/gentoo/pull/37221
    Signed-off-by: Ionen Wolkens <ionen@gentoo.org>

 .../files/qtmultimedia-6.7.2-gstreamer-no-v4l.patch  | 20 ++++++++++++++++++++
 dev-qt/qtmultimedia/qtmultimedia-6.7.2.ebuild        |  4 ++++
 profiles/base/package.use.force                      |  5 -----
 3 files changed, 24 insertions(+), 5 deletions(-)