Re: [Buildroot] [PATCH v2] package/opencv: fix a webp dependency

[Thomas Petazzoni via buildroot <buildroot@buildroot.org>]

On Fri, Aug 28, 2026 at 10:02:28PM +0200, Alessandro Rubini wrote:
> When BR2_PACKAGE_OPENCV4_WITH_WEBP=y we need to enable mux and demux
> too, otherwise build fails as follows:
> 
>     CMake Error: The following variables are used in this project,
>          but they are set to NOTFOUND.
>     Please set them or make sure they are set and tested correctly
>          in the CMake files:
>     WEBP_DEMUX_LIBRARY
>     linked by target "opencv_imgcodecs"
>          in directory [...]/build/opencv4-4.13.0/modules/imgcodecs
>     WEBP_MUX_LIBRARY
>     linked by target "opencv_imgcodecs"
>          in directory [...]/build/opencv4-4.13.0/modules/imgcodecs
> 
> The issue already exists in 2025.02.x (thanks Thomas for checking),
> but not in 2023.08.x whence my defconfig originated.
> 
> Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Applied to master after slightly tweaking the commit message,
especially to add a reference to the autobuilder failure being fixed,
thanks!

Best regards,

Thomas Petazzoni
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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