java.lang.UnsatisfiedLinkError: no jniopencv_core in java.library.path on Mac OS X with IntelliJ and Gradle

[jhoffjann]

Hi,

I'm currently trying to get JavaCV running with IntelliJ. I automatically downloaded and installed it with Gradle:

dependencies {

    testCompile group: 'junit', name: 'junit', version: '4.11'

    compile group: 'org.bytedeco', name: 'javacv', version: '0.9'

}

All the dependencies are now listed under External Libraries.

Everytime I now try to start this simple thing I just get two errors.

import static org.bytedeco.javacpp.opencv_core.*;

import static org.bytedeco.javacpp.opencv_imgproc.*;

import static org.bytedeco.javacpp.opencv_highgui.*;

public class SimpleSample {

    public static void main(String[] args) {

        IplImage image = cvLoadImage("CocaCola.jpg");

        if (image != null){

            cvSmooth(image, image);

            cvSaveImage("smoothCola.jpg", image);

            cvReleaseImage(image);

        }

    }

}

Those are the erros:

Exception in thread "main" java.lang.UnsatisfiedLinkError: no jniopencv_core in java.library.path

at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1764)

at java.lang.Runtime.loadLibrary0(Runtime.java:823)

at java.lang.System.loadLibrary(System.java:1044)

at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:535)

at org.bytedeco.javacpp.Loader.load(Loader.java:410)

at org.bytedeco.javacpp.Loader.load(Loader.java:353)

at org.bytedeco.javacpp.opencv_core.<clinit>(opencv_core.java:10)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:249)

at org.bytedeco.javacpp.Loader.load(Loader.java:385)

at org.bytedeco.javacpp.Loader.load(Loader.java:353)

at org.bytedeco.javacpp.opencv_highgui.<clinit>(opencv_highgui.java:13)

at SimpleSample.main(SimpleSample.java:12)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)

Caused by: java.lang.UnsatisfiedLinkError: no opencv_core in java.library.path

at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1764)

at java.lang.Runtime.loadLibrary0(Runtime.java:823)

at java.lang.System.loadLibrary(System.java:1044)

at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:535)

at org.bytedeco.javacpp.Loader.load(Loader.java:401)

... 13 more

Any help would be appreciated.

[Samuel Audet]

On 09/15/2014 10:49 PM, jhoffjann wrote:
> Any help would be appreciated.

Try to execute gradle with the `-Dplatform.dependencies=true` option.

Samuel

[Michael Hotan]

Did we ever find out if this resolved the issue?

[Samuel Audet]

On 11/30/2014 11:26 AM, Michael Hotan wrote:
> Did we ever find out if this resolved the issue?

I don't know, I haven't tried it with Gradle myself, but these kinds of
features are supposed to be supported :) Does it work for you? Would be
good to know for sure. Thanks!

Samuel

[Jonatan Borkowski]

Samuel... I need your help. I tried include project "javacv 0.9.1-SNAPSHOT" in Android Studio 1.0 RC4. And it doesn't work... 
I am trying to use FFmpegFrameGrabber and I'm getting result 

"ailed: dlopen failed: cannot locate symbol "av_input_audio_device_next" referenced by "libjniavdevice.so"..."

or "java.lang.UnsatisfiedLinkError..."

Please Help;)

Jonathan

[Samuel Audet]

That has been fixed here:
https://github.com/bytedeco/javacv/commit/b5eacbac21cba6665e8bc25036580df4d5777e12

Anyway, just use the latest FFmpegFrameGrabber from the develop branch
and all should be fine.

Samuel