JDK version used for compiling should be same as bundled jre version.

Ubuntu compile guide

Dependencies

• Java (Recommend Azul Java)
• OpenCV
• apt install

sudo apt update
sudo apt install -y cmake build-essential ant

Compile OpenCV

Set environment variables

export JAVA_HOME={java_path}
export ANT_DIR=/usr

Go to opencv directory

mkdir build
cd build
cmake -DBUILD_LIST=core,imgproc,imgcodecs,java,java_binding_generator ..
make -j8
sudo make install

Compile code

export JAVA_HOME={java_path}

./gradlew installDist

Test data

https://github.com/edoli/edolview/tree/data