[linux-yocto] Difference in sysroots and work linux include file

[Sathish Kumar Balasubramaniam -ERS, HCL Tech]

I am using Dora version of Yocto with my BSP.
There is a compilation issue and the cause is certain values (V4L2_MBUS_FMT_ARGB8888_1X32  and V4L2_MBUS_FMT_AYUV8_1X32) not defined in the following file

build/tmp/sysroots/<machine>/usr/include/linux/v4l2-mediabus.h

which is needed by media-ctl's v4l2subdev.c file.

There are 3 different versions of this file

1. build/tmp/sysroots/<machine>/usr/include/linux/v4l2-mediabus.h                                                                                                                   - needed values not present. Include path set to this for compilation of media-ctl
2. build/tmp/sysroots/<machine>/usr/src/kernel/include/linux/v4l2-mediabus.h                                                                                            - needed values present. Same as (3) file
3. build/tmp/work/<machine>-poky-linux-gnueabi/linux-yocto/3.4+git<srcrev>/git/include/linux/v4l2-mediabus.h                        - needed values present. Same as (2) file

My doubt is why the above files are different ? why the (1) file is not the same (2) or (3) ? which yocto config is creating this ?

I though the (3) file should have been copied to (1) and (2). Looks its different.
For my problem, either I need to change the compilation include path (where I need to change ?) or fix this difference issue (how ?)

Anyone has any faced this issue before ?


Regards,
B.Sathish Kumar


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