fatal error: 'media/gpu/v4l2/v4l2_stubs.h' file not found

[lilulu2018]

We used chromium_120.0.6099 patch to build chrome but received error as the title mentioned , more logs like this

clang -plugin-arg-find-bad-constructs -Xclang raw-ref-template-as-trivial-member -Xclang -plugin-arg-find-bad-constructs -Xclang check-stack-allocated -Xclang -plugin-arg-find-bad-constructs -Xclang check-raw-ptr-to-stack-allocated -Xclang -plugin-arg-find-bad-constructs -Xclang raw-ptr-fix-crbug-1449812 -Xclang -plugin-arg-find-bad-constructs -Xclang check-ipc -Wheader-hygiene -Wstring-conversion -Wtautological-overlap-compare -isystem../../build/linux/debian_bullseye_arm64-sysroot/usr/include/glib-2.0 -isystem../../build/linux/debian_bullseye_arm64-sysroot/usr/lib/aarch64-linux-gnu/glib-2.0/include -Wno-redundant-parens -Wno-redundant-parens -DPROTOBUF_ALLOW_DEPRECATED=1 -isystem../../build/linux/debian_bullseye_arm64-sysroot/usr/include/nss -isystem../../build/linux/debian_bullseye_arm64-sysroot/usr/include/nspr -std=c++20 -Wno-trigraphs -gsimple-template-names -fno-exceptions -fno-rtti -nostdinc++ -isystem../../third_party/libc++/src/include -isystem../../third_party/libc++abi/src/include --sysroot=../../build/linux/debian_bullseye_arm64-sysroot -fvisibility-inlines-hidden -c ../../media/capture/video/linux/v4l2_capture_device_impl.cc -o obj/media/capture/capture_lib/v4l2_capture_device_impl.o
../../media/capture/video/linux/v4l2_capture_device_impl.cc:14:10: fatal error: 'media/gpu/v4l2/v4l2_stubs.h' file not found
   14 | #include "media/gpu/v4l2/v4l2_stubs.h"
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
[27/1152] CXX obj/media/gpu/command_buffer_helper/command_buffer_helper.o
ninja: build stopped: subcommand failed.

Any ideas ?

[JeffyCN]

the rule to generate it is added in the patch 0003*

[JeffyCN]

maybe you didn't enable the 'use libv4l plugin' switch? please check the related bbappend for tested configuration

[lilulu2018]

@JeffyCN all patches are applied including patch 0006 not applicable so I manually modified files affected. use_v4l2_codec = true and use_vaapi = false added to args.gn, but still getting this error. Here is what exactly I have done: system ubuntu 22.04

1. git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
2. export PATH="${HOME}/depot_tools:$PATH"
3. mkdir ~/chromium && cd ~/chromium
4. fetch --nohooks chromium
5. cd src
6. git checkout -b v120 tags/120.0.6099.291
7. gclient sync
8. ./build/install-build-deps.sh
9. ./build/linux/sysroot_scripts/install-sysroot.py --arch=arm64
10. apply patches from dynamic-layers/recipes-browser/chromium/chromium_120.0.6099
11. gn gen out/Arm64
12. edit args.gn as below

    # Set build arguments here. See `gn help buildargs`.
    target_cpu = "arm64"
    enable_nacl = false
    symbol_level = 0
    blink_symbol_level = 0
    v8_symbol_level = 0
    is_official_build = true
    chrome_pgo_phase = 0
    use_v4l2_codec = true
    use_vaapi = false

    Then I run autoninja -C out/Arm64 chrome from src directory and get this error. Is there anything I've done wrong or missing anything ？

[JeffyCN]

check: https://github.com/JeffyCN/meta-rockchip/blob/master/dynamic-layers/recipes-browser/chromium/chromium-%25.bbappend#L9 use_v4lplugin=true

[lilulu2018]

added use_v4lplugin = trueresolved my problem