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POBuilding opencv libraries doesn't generate "libopencv_java244.so"
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copied!<p>I have been trying to get opencv to work in eclipse and I've been following <a href="http://docs.opencv.org/doc/tutorials/introduction/desktop_java/java_dev_intro.html" rel="nofollow">this tutorial</a> to try and get it to work in eclipse. I've gotten to the part where I create my .so libraries which is running <code>make -j8</code>. This works fine when I run it on a 32 bit linux system. I get all the necessary files I need but I get an exception in Eclipse when I try to run my program.</p> <blockquote> <p>Exception in thread "main" java.lang.UnsatisfiedLinkError: /home/joris/opencv/build/lib/libopencv_java246.so: /home/user/opencv/build/lib/libopencv_java246.so: wrong ELF class: ELFCLASS32 (Possible cause: architecture word width mismatch)</p> </blockquote> <p>After looking up what this means, I discovered that the library is 32 bit but my jvm is 64 bit. I can't change the jvm that I'm using, so I need to build my native libraries in 64 bit.</p> <p>I tried building the opencv libraries on a 64 bit system now, but I am unable to find the libopencv_java246.so file that I got from building it on a 32 bit system.</p> <blockquote> <p>user@BEL-8WF4XW1:~$ find /home/user/opencv/ -name *.so</p> <p>/home/user/opencv/3rdparty/lib/mips/libnative_camera_r4.0.3.so</p> <p>/home/user/opencv/3rdparty/lib/mips/libnative_camera_r4.2.0.so</p> <p>/home/user/opencv/3rdparty/lib/mips/libnative_camera_r4.1.1.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi-v7a/libnative_camera_r2.3.3.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi-v7a/libnative_camera_r4.0.3.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi-v7a/libnative_camera_r3.0.1.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi-v7a/libnative_camera_r4.0.0.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi-v7a/libnative_camera_r4.2.0.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi-v7a/libnative_camera_r4.1.1.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi-v7a/libnative_camera_r2.2.0.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi/libnative_camera_r2.3.3.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi/libnative_camera_r4.0.3.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi/libnative_camera_r3.0.1.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi/libnative_camera_r4.0.0.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi/libnative_camera_r4.2.0.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi/libnative_camera_r4.1.1.so</p> <p>/home/user/opencv/3rdparty/lib/armeabi/libnative_camera_r2.2.0.so</p> <p>/home/user/opencv/3rdparty/lib/x86/libnative_camera_r2.3.3.so</p> <p>/home/user/opencv/3rdparty/lib/x86/libnative_camera_r4.0.3.so</p> <p>/home/user/opencv/3rdparty/lib/x86/libnative_camera_r3.0.1.so</p> <p>/home/user/opencv/3rdparty/lib/x86/libnative_camera_r4.2.0.so</p> <p>/home/user/opencv/3rdparty/lib/x86/libnative_camera_r4.1.1.so</p> <p>user@BEL-8WF4XW1:~$ </p> </blockquote> <p>I don't understand why it does work on the 32 bit system but not on the 64 bit system. Can anyone help me understand?</p>

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