Installing Open CV method

[alexxony]

https://qengineering.eu/install%20opencv%20on%20raspberry%20pi%205.html

I tried to follow this, but it is different.

sudo nano /sbin/dphys-swapfile

There were no script , only vacant.

If there is opencv installation for orange pi rk3588.

please give a link

[Qengineering]

That's clear.
Please read the Enlarge memory swap section. It is written for the Jetson Nano, but it is applicable for every Linux system without dphys-swap installed.

If you have enough memory on board, ignore the dphys-swap. Just start.
If not, you can install it or build your OpenCV with less cores simultaneously. For instance, make -j2.

You can use this script.
At line 82, you see the make -j4 command.
If needed, reduce the number. (Only if you have not enough memory).

[alexxony]

That's clear. Please read the Enlarge memory swap section. It is written for the Jetson Nano, but it is applicable for every Linux system without dphys-swap installed.

If you have enough memory on board, ignore the dphys-swap. Just start. If not, you can install it or build your OpenCV with less cores simultaneously. For instance, make -j2.

You can use this script. At line 82, you see the make -j4 command. If needed, reduce the number. (Only if you have not enough memory).

I use orange pi 5 plus 4gb

[Qengineering]

With make -j2 you're safe.