HOWTO build:
you need this HOWTO in case if you got errors like
/usr/lib/x86_64-linux-gnu/libstdc++.so.6 version glibcxx_3.4.22' not found
with libopencv_javaXXX.so that in maven dist, and you don't have possibility to use latest libc6 in your linux system (i.e. fixed version of Debian)
- install dependencies
apt-get install git python python3 ant cmake build-essential libgtk2.0-dev pkg-config python-dev python-numpy libtbb2 libtbb-dev libdc1394-22-dev -y
- prepare:
git clone git://github.com/opencv/opencv.git
cd opencv
git checkout 3.2.0
mkdir build
cd build
- set java home
export JAVA_HOME=/usr/lib/jvm/java-8-oracle
- prepare build, add 3dparty modules (like support of PNG images)
cmake -D BUILD_SHARED_LIBS=OFF -D WITH_ZLIB=ON -D BUILD_ZLIB=ON -D WITH_OPENEXR=ON -D BUILD_OPENEXR=ON -D WITH_TBB=ON -D WITH_JASPER=ON -D BUILD_JASPER=ON -D WITH_PNG=ON -D BUILD_PNG=ON -D WITH_JPEG=ON -D BUILD_JPEG=ON -D WITH_TIFF=ON -D BUILD_TIFF=ON -D BUILD_IPP_IW=ON -D WITH_ITT=ON -D BUILD_ITT=ON -D WITH_1394=ON ..
where
BUILD_XXX - build using dependency from opencv/3dparty/XXX folder
WITH_XXX - include dependency into build
- make sure that output (at the end) has following:
-- Java:
-- ant: /usr/bin/ant (ver 1.9.4)
-- JNI: /usr/lib/jvm/java-8-oracle/include /usr/include /usr/lib/jvm/java-8-oracle/include
-- Java wrappers: YES
-- Java tests: YES
- start build (using 8 threads)
make -j8
- on success check following folders:
bin/opencv-320.jar
lib/libopencv_java320.so
useful links: https://advancedweb.hu/2016/03/01/opencv_ubuntu/ https://docs.opencv.org/trunk/d9/d52/tutorial_java_dev_intro.html