Bug 302580

Summary:	media-libs/libv4l-0.6.1 (Enhancement: amd64 multilib use flag)
Product:	Gentoo Linux	Reporter:	Iskren Slavov <iskren.s>
Component:	Current packages	Assignee:	Gentoo Linux bug wranglers <bug-wranglers>
Status:	RESOLVED WORKSFORME
Severity:	enhancement
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	proposed patch for the libv4l-0.6.1.ebuild

Description Iskren Slavov 2010-01-28 08:21:22 UTC

Ok, let me explain. There are a bunch of web cameras (especially gpsca2-based ones). GPSCA2 is included in video4linux2 into the kernel and the drivers are working great.


Reproducible: Always

Steps to Reproduce:
1. Let's say you'd like to use your gpsca2-based webcam with Skype.
2. You already compiled the driver into the kernel or as a module.
3. You would have to use the following line to to run Skype with v4l1compat library loaded:
LD_PRELOAD="/usr/lib32/libv4l/v4l1compat.so" skype
or your gpsca2-based camera won't work with it.
4. But there is no such file becaus libv4l isn't built with EMULTILIB_PKG="true".

Actual Results:  
When libv4l isn't built with EMULTILIB_PKG="true" there is a 64-bit library in "/usr/lib64/libv4l/v4l1compat.so" but as soon as Skype is a 32-bit application it does not work.

Expected Results:  
I propose to add a use flag for amd64 build of libv4l to enable multilib support. I've already done this in my local overlay and my camera finally works with Skype.

I'm attaching a proposed patch to the latest ebuild of libv4l in portage.

Comment 1 Iskren Slavov 2010-01-28 08:22:14 UTC

Created attachment 217702 [details, diff]
proposed patch for the libv4l-0.6.1.ebuild

Comment 2 Samuli Suominen (RETIRED) gentoo-dev

2010-01-28 09:40:09 UTC

# emerge emul-linux-x86-medialibs

app-emulation/emul-linux-x86-medialibs-20091231 (/usr/lib32/libv4l/v4l1compat.so)