Re: [yocto-builds] Please Help me: v4l2loopback recipe

Re: [yocto-builds] Please Help me: v4l2loopback recipe

[Randy MacLeod]

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On 2020-07-24 12:21 p.m., profecie@gmail.com wrote:
>
> Hi,
>
> I'm begginer on Yocto and I try to add v4l2loopback to my image.Idon't 
> find any recipe to do that so i try to do myself but it's not a success :)
>
Hi,

Welcome to Yocto development.

I'm moving this email to the yocto general list.

the yocto-builds list is mainly about automated build reports.


> I download current source on github 
> (https://github.com/umlaeute/v4l2loopback) and i try to compile with 
> with recipe
>
> |SUMMARY = "V4L2Loopback" DESCRIPTION = "v4l2loopback module" LICENSE 
> = "GPLv2" LIC_FILES_CHKSUM = 
> "file://${COMMON_LICENSE_DIR}/GPL-2.0;md5=801f80980d171dd6425610833a22dbe6" 
> # Use local tarball SRC_URI = "file://v4l2loopback-master.tar.gz" # 
> Make sure our source directory (for the build) matches the directory 
> structure in the tarball S = "${WORKDIR}/v4l2loopback-master" inherit 
> module KERNEL_MODULE_AUTOLOAD = "v4l2loopback" |
>
> bitbake give me :
>
> || NOTE: make -j 4 
> KERNEL_SRC=/media/yocto-irts/distro/build/tmp/work-shared/genericx86-64/kernel-source 
> DEPMOD=echo 
> MODLIB=/media/yocto-irts/distro/build/tmp/work/genericx86_64-poky-linux/v4l2loopbackd/1.0-r0/image/lib/modules/4.18.22-yocto-standard 
> CC=x86_64-poky-linux-gcc -fuse-ld=bfd 
> -fdebug-prefix-map=/media/yocto-irts/distro/build/tmp/work/genericx86_64-poky-linux/v4l2loopbackd/1.0-r0=/usr/src/debug/v4l2loopbackd/1.0-r0 
> -fdebug-prefix-map=/media/yocto-irts/distro/build/tmp/work/genericx86_64-poky-linux/v4l2loopbackd/1.0-r0/recipe-sysroot= 
> -fdebug-prefix-map=/media/yocto-irts/distro/build/tmp/work/genericx86_64-poky-linux/v4l2loopbackd/1.0-r0/recipe-sysroot-native= 
> -fdebug-prefix-map=/media/yocto-irts/distro/build/tmp/work-shared/genericx86-64/kernel-source=/usr/src/kernel 
> LD=x86_64-poky-linux-ld.bfd 
> O=/media/yocto-irts/distro/build/tmp/work-shared/genericx86-64/kernel-build-artifacts 
> modules_install | make: *** No rule to make target 'modules_install'. 
> Stop. | ERROR: oe_runmake failed | WARNING: exit code 1 from a shell 
> command.|

||This seems to be an out of tree kernel module so you should take a 
look at:||||


      2.10.2. Incorporating Out-of-Tree Modules

In:

https://www.yoctoproject.org/docs/current/kernel-dev/kernel-dev.html

Try the example here:

http://git.yoctoproject.org/cgit/cgit.cgi/poky/tree/meta-skeleton/recipes-kernel/hello-mod/hello-mod_0.1.bb

Will you please send the recipe to the 
*openembedded-devel@lists.openembedded.org*
list following these instructions:
https://www.openembedded.org/wiki/How_to_submit_a_patch_to_OpenEmbedded
once it works?

Good luck,

../Randy


> ||
>
> I think i have to patch Makefile but i don't know how
>
> Please help me to get v4l2loopback on my yocto project ;)
>
> Thanks
>
>
> 


-- 
# Randy MacLeod
# Wind River Linux


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