How to install opencv aarch64 (cross-compiled) on target

[zachatttack]

I'm having trouble compiling with sh build-opencv-linux.sh on a raspberry pi 4 running bookworm 64-bit. So I'm cross compiling with bash build-opencv-linux-aarch64-cross-compile.sh --build-only

I've added the following lines to the bash script

export CC=/usr/bin/aarch64-linux-gnu-gcc
export CXX=/usr/bin/aarch64-linux-gnu-g++

The build completes and I see a bin and lib directory in opencv/build_opencv.

But is unclear to me how to now install my build to my target.

Instructions found here https://docs.opencv.org/4.x/d3/dd9/tutorial_crosscompile_with_multiarch.html led me to think there will be an install folder that I transfer to my raspberry pi, but the script doesn't seem to generate that .

[AIWintermuteAI]

@rajames I see you added that fairly recently - can you weigh in?

[rajames]

@zachatttack I've updated the script to prepare the output files better when --build-only is passed. See the README for more information.

You can copy the directories in <path-to-script>/opencv/build_opencv/install to your target. You can place them anywhere. If for example you'd want to install them system-wide then you can do as follows:

cd <path-to-script>/opencv/build_opencv/
sudo cp -R install/bin/* /usr/local/bin/
sudo cp -R install/share/* /usr/local/share/
sudo cp -R install/lib/* /usr/local/lib/
sudo cp -R install/include/* /usr/local/include/