Issue executing OpenCV native functions via JNI

Question

I'm attempting to run native OpenCV functions via the Java Native Interface on Ubuntu. Ultimately what I'm trying to accomplish is the use the bagofwords functions available in the default version of OpenCV, but for the time being I'm trying to test out running simple functions using this interface.

So, I have the following Java file with the relative native functions.

class OpenCVSample {

static {
    System.loadLibrary("Bridge1");
}

public native int BridgeFunction();

public static void main(String[] args) {
    OpenCVSample b = new OpenCVSample();
    b.BridgeFunction();
}

}

Here is my C++ Bridge file.

#include "OpenCVSample.h"
#include <string.h>
#include <cv.h>

JNIEXPORT jint JNICALL Java_OpenCVSample_BridgeFunction(JNIEnv *env, jobject obj) {                             
IplImage *img = cvCreateImage( cvSize( 640, 480 ), IPL_DEPTH_8U, 1 );                                               
    return 1;
}
int main(){}

Now as I mentioned, I'm doing this on Ubuntu, so I'm first compiling OpenCV into a shared library with the jdk with gcc with the following command.

g++ -shared -o libBridge1.so Bridge1.cpp -fPIC -I/usr/lib/jvm/java-1.7.0-openjdk-amd64/include -I/usr/lib/jvm/java-1.7.0-openjdk-amd64/include/linux -I/var/opencv/opencv/include/opencv 
-I/var/opencv/opencv/modules/core/include 
-I/var/opencv/opencv/modules/imgproc/include 
-I/var/opencv/opencv/modules/features2d/include 
-I/var/opencv/opencv/modules/flann/include 
-I/var/opencv/opencv/modules/calib3d/include 
-I/var/opencv/opencv/modules/objdetect/include 
-I/var/opencv/opencv/modules/legacy/include 
-I/var/opencv/opencv/modules/highgui/include

Which then create a shared library called libBridge1.so. Now the problem arises when I try to run the Java file itself, where I get the following error.

java: symbol lookup error: /var/tests/oc/libBridge1.so: undefined symbol: cvCreateImage

I've looked into this quite a bit and I'm nearly sure I'm creating the shared library correctly, so can't understand why I'm getting this error, could anyone explain?

----------------------------------- EDIT -----------------------------------

Thanks to users Andrew Henle and James Black for the advise. I've gone ahead and linked the respective libraries with the following command.

g++ -shared -o libBridge1.so OpenCVSample.cpp -fPIC -I/usr/lib/jvm/java-1.7.0-openjdk-amd64/include -I/usr/lib/jvm/java-1.7.0-openjdk-amd64/include/linux -I/var/opencv/opencv/include -I/var/opencv/opencv/include/opencv -I/var/opencv/opencv/modules/core/include -I/var/opencv/opencv/modules/imgproc/include -I/var/opencv/opencv/modules/photo/include -I/var/opencv/opencv/modules/objdetect/include -L/var/opencv/opencv/build/lib -lopencv_core -L/var/opencv/opencv/build/lib -lopencv_imgproc -L/var/opencv/opencv/build/lib -lopencv_highgui -L/var/opencv/opencv/build/lib -lopencv_objdetect -L/var/opencv/opencv/build/lib -lopencv_features2d -L/var/opencv/opencv/build/lib -lopencv_video -L/var/opencv/opencv/build/lib -lopencv_core249

And the library seems to compile, however the issue now seems that the that it's filled with undefined references. When running the ld command on libBridge1.so i get the following stream of errors.

ld: warning: cannot find entry symbol _start; not setting start address
libBridge1.so: undefined reference to `ippicviMirror_32s_C4R'
libBridge1.so: undefined reference to `ippicviTranspose_8u_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_16u_C4R'
libBridge1.so: undefined reference to `ippicviSub_8u_C1RSfs'
libBridge1.so: undefined reference to `ippicviTranspose_32s_C1IR'
libBridge1.so: undefined reference to `ippicviSum_32f_C3R'
libBridge1.so: undefined reference to `pthread_mutex_trylock'
libBridge1.so: undefined reference to `ippicviMean_16u_C1MR'
libBridge1.so: undefined reference to `ippicviTranspose_16s_C3R'
libBridge1.so: undefined reference to `ippicviNorm_L2_16s_C3R'
libBridge1.so: undefined reference to `ippicviXor_8u_C1R'
libBridge1.so: undefined reference to `ippicviMirror_8u_C4R'
libBridge1.so: undefined reference to `ippicviNorm_Inf_16u_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_16u_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_16u_C3CMR'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_32f_C3R'
libBridge1.so: undefined reference to `ippicviNorm_L2_32f_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_16s_C3R'
libBridge1.so: undefined reference to `ippicviNorm_L1_8s_C1MR'
libBridge1.so: undefined reference to `ippicviSet_16u_C3MR'
libBridge1.so: undefined reference to `gzeof'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_32f_C1MR'
libBridge1.so: undefined reference to `ippicviTranspose_16u_C3IR'
libBridge1.so: undefined reference to `ippicviSum_16u_C4R'
libBridge1.so: undefined reference to `ippicviAbsDiff_8u_C1R'
libBridge1.so: undefined reference to `ippicviNormRel_L2_8u_C1MR'
libBridge1.so: undefined reference to `ippicviAbsDiff_16u_C1R'
libBridge1.so: undefined reference to `ippicvsMinEvery_16u'
libBridge1.so: undefined reference to `ippicvMalloc'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_32f_C1MR'
libBridge1.so: undefined reference to `ippicviMirror_16u_C3IR'
libBridge1.so: undefined reference to `ippicviConvert_8s32f_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_16s_C4R'
libBridge1.so: undefined reference to `ippicvsFlip_32f_I'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_16u_C3R'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_8u_C3CMR'
libBridge1.so: undefined reference to `ippicviTranspose_16u_C1IR'
libBridge1.so: undefined reference to `ippicviSub_16u_C1RSfs'
libBridge1.so: undefined reference to `ippicviSet_16u_C4MR'
libBridge1.so: undefined reference to `ippicviTranspose_8u_C3IR'
libBridge1.so: undefined reference to `ippicviNorm_L1_16u_C3R'
libBridge1.so: undefined reference to `gzopen'
libBridge1.so: undefined reference to `ippicviTranspose_16u_C1R'
libBridge1.so: undefined reference to `ippicviMean_32f_C3CMR'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_32f_C1MR'
libBridge1.so: undefined reference to `pthread_mutexattr_settype'
libBridge1.so: undefined reference to `gzclose'
libBridge1.so: undefined reference to `ippicviNorm_L2_16u_C4R'
libBridge1.so: undefined reference to `ippicviCompare_16s_C1R'
libBridge1.so: undefined reference to `ippicviMax_8u_C1R'
libBridge1.so: undefined reference to `ippicviMean_16s_C3R'
libBridge1.so: undefined reference to `ippicviConvert_32f16u_C1RSfs'
libBridge1.so: undefined reference to `ippicviConvert_32s32f_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_8u_C1MR'
libBridge1.so: undefined reference to `ippicviMean_8u_C1R'
libBridge1.so: undefined reference to `ippicviMirror_16s_C3R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_32f_C4R'
libBridge1.so: undefined reference to `ippicviNormRel_L1_8u_C1MR'
libBridge1.so: undefined reference to `pthread_key_create'
libBridge1.so: undefined reference to `ippicviMirror_16u_C1IR'
libBridge1.so: undefined reference to `ippicviNormRel_L2_16u_C1R'
libBridge1.so: undefined reference to `gzrewind'
libBridge1.so: undefined reference to `ippicviMirror_32s_C1R'
libBridge1.so: undefined reference to `ippicviAdd_32f_C1R'
libBridge1.so: undefined reference to `ippicviNorm_L1_8u_C1MR'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_32f_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_8u_C4R'
libBridge1.so: undefined reference to `ippicviSum_8u_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_8s_C1MR'
libBridge1.so: undefined reference to `ippicviConvert_16u32s_C1R'
libBridge1.so: undefined reference to `ippicviNorm_L1_16s_C4R'
libBridge1.so: undefined reference to `ippicviConvert_16u8s_C1RSfs'
libBridge1.so: undefined reference to `ippicviMirror_16s_C4IR'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_16u_C3CMR'
libBridge1.so: undefined reference to `ippicviNormRel_L1_16u_C1MR'
libBridge1.so: undefined reference to `ippicviCompare_8u_C1R'
libBridge1.so: undefined reference to `ippicviMinMaxIndx_32f_C1MR'
libBridge1.so: undefined reference to `ippicviMirror_32f_C4IR'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_32f_C4R'
libBridge1.so: undefined reference to `ippicviSum_16s_C3R'
libBridge1.so: undefined reference to `ippicviMin_32f_C1R'
libBridge1.so: undefined reference to `ippicviNorm_L1_16s_C3R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_16s_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_32f_C1R'
libBridge1.so: undefined reference to `dlsym'
libBridge1.so: undefined reference to `ippicviNormRel_L2_16s_C1R'
libBridge1.so: undefined reference to `ippicviCopy_32s_C3MR'
libBridge1.so: undefined reference to `ippicviConvert_16u8u_C1R'
libBridge1.so: undefined reference to `ippicviSet_16s_C4MR'
libBridge1.so: undefined reference to `ippicviMax_16s_C1R'
libBridge1.so: undefined reference to `ippicviMinMaxIndx_8u_C1MR'
libBridge1.so: undefined reference to `pthread_once'
libBridge1.so: undefined reference to `ippicviNormRel_L2_8s_C1MR'
libBridge1.so: undefined reference to `ippicviNorm_L1_32f_C1MR'
libBridge1.so: undefined reference to `ippicviTranspose_8u_C4IR'
libBridge1.so: undefined reference to `ippicviConvert_16s32s_C1R'
libBridge1.so: undefined reference to `ippicviCopy_8u_C1R'
libBridge1.so: undefined reference to `ippicvsMinEvery_8u'
libBridge1.so: undefined reference to `ippicvsFlip_64f_I'
libBridge1.so: undefined reference to `ippicvsMaxEvery_32f'
libBridge1.so: undefined reference to `ippicviMirror_32f_C1R'
libBridge1.so: undefined reference to `ippicviNormRel_L1_16u_C1R'
libBridge1.so: undefined reference to `ippicviNormRel_L2_32f_C1MR'
libBridge1.so: undefined reference to `ippicviNorm_L1_16u_C4R'
libBridge1.so: undefined reference to `ippicviAdd_16u_C1RSfs'
libBridge1.so: undefined reference to `ippicviNorm_L2_16s_C4R'
libBridge1.so: undefined reference to `ippicviMean_8u_C1MR'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_16u_C3R'
libBridge1.so: undefined reference to `ippicviMul_16u_C1RSfs'
libBridge1.so: undefined reference to `ippicvsMaxEvery_64f'
libBridge1.so: undefined reference to `ippicviMirror_16u_C3R'
libBridge1.so: undefined reference to `ippicviTranspose_32s_C4IR'
libBridge1.so: undefined reference to `ippicviMirror_8u_C3IR'
libBridge1.so: undefined reference to `ippicviConvert_32s8u_C1R'
libBridge1.so: undefined reference to `ippicviTranspose_16s_C3IR'
libBridge1.so: undefined reference to `ippicviSum_8u_C3R'
libBridge1.so: undefined reference to `ippicviNorm_Inf_32f_C4R'
libBridge1.so: undefined reference to `ippicviTranspose_8u_C3R'
libBridge1.so: undefined reference to `ippicviMinMaxIndx_8s_C1MR'
libBridge1.so: undefined reference to `ippicviConvert_32s16u_C1RSfs'
libBridge1.so: undefined reference to `ippicviConvert_8s8u_C1Rs'
libBridge1.so: undefined reference to `ippicviNormRel_Inf_32f_C1MR'
libBridge1.so: undefined reference to `ippicviTranspose_8u_C1IR'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_8s_C3CMR'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_8u_C4R'
libBridge1.so: undefined reference to `ippicvsSortAscend_8u_I'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_16u_C1MR'
libBridge1.so: undefined reference to `ippicviConvert_32f32s_C1RSfs'
libBridge1.so: undefined reference to `ippicviTranspose_16s_C1R'
libBridge1.so: undefined reference to `ippicviCopy_32s_C4MR'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_8u_C3CMR'
libBridge1.so: undefined reference to `ippicviNorm_L2_16u_C3R'
libBridge1.so: undefined reference to `pthread_getspecific'
libBridge1.so: undefined reference to `ippicviSet_32s_C4MR'
libBridge1.so: undefined reference to `ippicviNorm_Inf_16u_C3R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_32f_C3R'
libBridge1.so: undefined reference to `ippicviTranspose_32s_C1R'
libBridge1.so: undefined reference to `ippicvInit'
libBridge1.so: undefined reference to `ippicviMean_8u_C3CMR'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_8u_C3R'
libBridge1.so: undefined reference to `ippicviNorm_L1_32f_C3R'
libBridge1.so: undefined reference to `pthread_mutexattr_destroy'
libBridge1.so: undefined reference to `ippicviNorm_Inf_8u_C4R'
libBridge1.so: undefined reference to `ippicviConvert_32s16s_C1RSfs'
libBridge1.so: undefined reference to `ippicviMul_16s_C1RSfs'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_8s_C1MR'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_16u_C4R'
libBridge1.so: undefined reference to `ippicviMean_StdDev_8u_C3CMR'
libBridge1.so: undefined reference to `ippicviMirror_32s_C4IR'
libBridge1.so: undefined reference to `ippicviCopy_16u_C1MR'
libBridge1.so: undefined reference to `ippicviMean_StdDev_16u_C1MR'
libBridge1.so: undefined reference to `ippicviNormRel_L1_32f_C1MR'
libBridge1.so: undefined reference to `ippicviConvert_32f8s_C1RSfs'
libBridge1.so: undefined reference to `ippicviSum_16u_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_8u_C1R'
libBridge1.so: undefined reference to `ippicviMirror_8u_C3R'
libBridge1.so: undefined reference to `ippicviNorm_L1_16u_C1R'
libBridge1.so: undefined reference to `ippicviMirror_32s_C1IR'
libBridge1.so: undefined reference to `ippicviMul_32f_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_16s_C4R'
libBridge1.so: undefined reference to `ippicviTranspose_32s_C4R'
libBridge1.so: undefined reference to `ippicviConvert_32s8s_C1R'
libBridge1.so: undefined reference to `ippicviTranspose_16u_C4R'
libBridge1.so: undefined reference to `ippicviNorm_L2_16u_C1MR'
libBridge1.so: undefined reference to `ippicviNorm_Inf_16s_C4R'
libBridge1.so: undefined reference to `ippicviTranspose_32f_C4IR'
libBridge1.so: undefined reference to `ippicviNorm_L2_8u_C3R'
libBridge1.so: undefined reference to `ippicviMean_16u_C4R'
libBridge1.so: undefined reference to `ippicviTranspose_16s_C4R'
libBridge1.so: undefined reference to `ippicviMean_32f_C1R'
libBridge1.so: undefined reference to `ippicviNot_8u_C1R'
libBridge1.so: undefined reference to `ippicviNorm_Inf_8u_C3R'
libBridge1.so: undefined reference to `ippicviNorm_L2_16s_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_16u_C1MR'
libBridge1.so: undefined reference to `ippicviLUTPalette_8u_C4R'
libBridge1.so: undefined reference to `ippicviMirror_16u_C4R'
libBridge1.so: undefined reference to `ippicviTranspose_32f_C1IR'
libBridge1.so: undefined reference to `ippicviNormRel_Inf_16s_C1R'
libBridge1.so: undefined reference to `ippicviMean_StdDev_16u_C3CMR'
libBridge1.so: undefined reference to `ippicviSub_16s_C1RSfs'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_8u_C1R'
libBridge1.so: undefined reference to `ippicviNorm_Inf_32f_C3R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_16u_C1MR'
libBridge1.so: undefined reference to `ippicviCopy_8u_C3MR'
libBridge1.so: undefined reference to `ippicviNorm_L1_32f_C1R'
libBridge1.so: undefined reference to `ippicviMirror_32s_C3R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_16u_C3R'
libBridge1.so: undefined reference to `ippicviMean_8u_C3R'
libBridge1.so: undefined reference to `pthread_mutexattr_init'
libBridge1.so: undefined reference to `ippicviNorm_Inf_16s_C1R'
libBridge1.so: undefined reference to `ippicviConvert_16s8s_C1RSfs'
libBridge1.so: undefined reference to `ippicviNormRel_Inf_32f_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_8s_C3CMR'
libBridge1.so: undefined reference to `ippicviNormRel_L2_16u_C1MR'
libBridge1.so: undefined reference to `ippicviMinMaxIndx_8s_C1R'
libBridge1.so: undefined reference to `ippicviNorm_L1_16s_C1R'
libBridge1.so: undefined reference to `ippicviMean_StdDev_8u_C3CR'
libBridge1.so: undefined reference to `ippicviSet_32f_C3MR'
libBridge1.so: undefined reference to `ippicviConvert_8s16s_C1R'
libBridge1.so: undefined reference to `ippicviAdd_8u_C1RSfs'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_32f_C3R'
libBridge1.so: undefined reference to `ippicviConvert_16u16s_C1RSfs'
libBridge1.so: undefined reference to `ippicviSet_16s_C3MR'
libBridge1.so: undefined reference to `ippicviTranspose_32f_C1R'
libBridge1.so: undefined reference to `ippicviSum_16u_C3R'
libBridge1.so: undefined reference to `ippicviMirror_16s_C3IR'
libBridge1.so: undefined reference to `ippicviNorm_Inf_8s_C1MR'
libBridge1.so: undefined reference to `ippicviConvert_8s16u_C1Rs'
libBridge1.so: undefined reference to `ippicviNorm_L2_32f_C3R'
libBridge1.so: undefined reference to `ippicviMean_16u_C1R'
libBridge1.so: undefined reference to `ippicviNorm_L1_8u_C3R'
libBridge1.so: undefined reference to `ippicviCopy_8u_C3P3R'
libBridge1.so: undefined reference to `ippicviCopy_16u_C3MR'
libBridge1.so: undefined reference to `ippicviNorm_L2_16u_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_8u_C3R'
libBridge1.so: undefined reference to `ippicviSum_8u_C4R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_16u_C1R'
libBridge1.so: undefined reference to `ippicviMean_32f_C1MR'
libBridge1.so: undefined reference to `ippicviTranspose_16s_C4IR'
libBridge1.so: undefined reference to `ippicviMirror_8u_C1IR'
libBridge1.so: undefined reference to `ippicviTranspose_32f_C4R'
libBridge1.so: undefined reference to `ippicviMean_StdDev_32f_C1MR'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_16s_C4R'
libBridge1.so: undefined reference to `ippicviNormRel_Inf_16u_C1R'
libBridge1.so: undefined reference to `ippicviSum_16s_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_16s_C3R'
libBridge1.so: undefined reference to `ippicviMean_16u_C3R'
libBridge1.so: undefined reference to `ippicviDotProd_16u64f_C1R'
libBridge1.so: undefined reference to `ippicviCompare_16u_C1R'
libBridge1.so: undefined reference to `ippicviMean_StdDev_16u_C3CR'
libBridge1.so: undefined reference to `ippicviNorm_L2_8u_C4R'
libBridge1.so: undefined reference to `ippicviMirror_8u_C4IR'
libBridge1.so: undefined reference to `ippicvsDotProd_64f'
libBridge1.so: undefined reference to `ippicviSet_32f_C4MR'
libBridge1.so: undefined reference to `ippicvsMinEvery_32f'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_32f_C3CMR'
libBridge1.so: undefined reference to `ippicviNorm_L2_8u_C1MR'
libBridge1.so: undefined reference to `ippicviNorm_Inf_16s_C3R'
libBridge1.so: undefined reference to `ippicviSum_32f_C4R'
libBridge1.so: undefined reference to `ippicviNormRel_L1_32f_C1R'
libBridge1.so: undefined reference to `ippicviTranspose_16u_C4IR'
libBridge1.so: undefined reference to `ippicviNorm_Inf_8u_C1MR'
libBridge1.so: undefined reference to `ippicviSub_32f_C1R'
libBridge1.so: undefined reference to `ippicviMax_16u_C1R'
libBridge1.so: undefined reference to `ippicviMean_StdDev_8u_C1MR'
libBridge1.so: undefined reference to `ippicviTranspose_32f_C3R'
libBridge1.so: undefined reference to `ippicviSum_32f_C1R'
libBridge1.so: undefined reference to `ippicviMinMaxIndx_8u_C1R'
libBridge1.so: undefined reference to `ippicviMin_16u_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_8s_C1MR'
libBridge1.so: undefined reference to `ippicviSet_32s_C3MR'
libBridge1.so: undefined reference to `ippicviNorm_L2_8s_C1MR'
libBridge1.so: undefined reference to `ippicviMax_32f_C1R'
libBridge1.so: undefined reference to `ippicviNorm_L2_32f_C1MR'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_16u_C4R'
libBridge1.so: undefined reference to `ippicviNorm_L1_16u_C1MR'
libBridge1.so: undefined reference to `ippicviNorm_L1_32f_C4R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_32f_C3CMR'
libBridge1.so: undefined reference to `ippicviCopy_8u_C4P4R'
libBridge1.so: undefined reference to `ippicvsMaxEvery_16u'
libBridge1.so: undefined reference to `ippicviNormRel_Inf_8s_C1MR'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_8u_C1R'
libBridge1.so: undefined reference to `ippicviTranspose_16s_C1IR'
libBridge1.so: undefined reference to `ippicviCopy_8u_C1MR'
libBridge1.so: undefined reference to `ippicviSet_32s_C1MR'
libBridge1.so: undefined reference to `ippicvsFlip_8u_I'
libBridge1.so: undefined reference to `ippicviConvert_8u32s_C1R'
libBridge1.so: undefined reference to `ippicviNormRel_Inf_8u_C1MR'
libBridge1.so: undefined reference to `ippicviTranspose_32s_C3R'
libBridge1.so: undefined reference to `ippicvsMinEvery_64f'
libBridge1.so: undefined reference to `ippicviTranspose_16u_C3R'
libBridge1.so: undefined reference to `ippicviConvert_8u16s_C1R'
libBridge1.so: undefined reference to `ippicviCopy_32s_C1MR'
libBridge1.so: undefined reference to `ippicviConvert_8u8s_C1RSfs'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_16s_C1R'
libBridge1.so: undefined reference to `ippicviDotProd_16s64f_C1R'
libBridge1.so: undefined reference to `ippicviSet_16s_C1MR'
libBridge1.so: undefined reference to `ippicviNorm_L1_8u_C1R'
libBridge1.so: undefined reference to `ippicviNorm_L2_32f_C4R'
libBridge1.so: undefined reference to `ippicviOr_8u_C1R'
libBridge1.so: undefined reference to `ippicviMirror_8u_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_8u_C3R'
libBridge1.so: undefined reference to `ippicviTranspose_32s_C3IR'
libBridge1.so: undefined reference to `ippicviMirror_16s_C1R'
libBridge1.so: undefined reference to `ippicviMean_16s_C4R'
libBridge1.so: undefined reference to `ippicviMean_16s_C1R'
libBridge1.so: undefined reference to `ippicviConvert_32f8u_C1RSfs'
libBridge1.so: undefined reference to `ippicviConvert_16s32f_C1R'
libBridge1.so: undefined reference to `ippicviMin_8u_C1R'
libBridge1.so: undefined reference to `ippicviNorm_L2_8u_C1R'
libBridge1.so: undefined reference to `ippicviLUTPalette_8u_C3R'
libBridge1.so: undefined reference to `gzgets'
libBridge1.so: undefined reference to `ippicviMirror_32f_C1IR'
libBridge1.so: undefined reference to `ippicviAdd_16s_C1RSfs'
libBridge1.so: undefined reference to `ippicviMean_StdDev_32f_C3CR'
libBridge1.so: undefined reference to `ippicviConvert_8u16u_C1R'
libBridge1.so: undefined reference to `ippicviMean_StdDev_32f_C3CMR'
libBridge1.so: undefined reference to `ippicviMirror_32f_C4R'
libBridge1.so: undefined reference to `ippicviNorm_Inf_8u_C1R'
libBridge1.so: undefined reference to `ippicviMul_8u_C1RSfs'
libBridge1.so: undefined reference to `ippicviTranspose_32f_C3IR'
libBridge1.so: undefined reference to `ippicviMin_16s_C1R'
libBridge1.so: undefined reference to `ippicviNormRel_L2_8u_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_32f_C4R'
libBridge1.so: undefined reference to `ippicviMirror_32s_C3IR'
libBridge1.so: undefined reference to `ippicviMirror_16s_C1IR'
libBridge1.so: undefined reference to `ippicviMean_8u_C4R'
libBridge1.so: undefined reference to `ippicviNormRel_Inf_8u_C1R'
libBridge1.so: undefined reference to `ippicviNorm_L1_8u_C4R'
libBridge1.so: undefined reference to `ippicviNormRel_Inf_16u_C1MR'
libBridge1.so: undefined reference to `ippicviNormRel_L1_8s_C1MR'
libBridge1.so: undefined reference to `ippicviMean_32f_C3R'
libBridge1.so: undefined reference to `ippicviMean_32f_C4R'
libBridge1.so: undefined reference to `ippicviMirror_32f_C3R'
libBridge1.so: undefined reference to `gzputs'
libBridge1.so: undefined reference to `ippicviMirror_32f_C3IR'
libBridge1.so: undefined reference to `ippicviAbsDiff_32f_C1R'
libBridge1.so: undefined reference to `ippicvsFlip_16u_I'
libBridge1.so: undefined reference to `ippicviNormRel_L1_16s_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_32f_C1R'
libBridge1.so: undefined reference to `ippicviConvert_16s16u_C1Rs'
libBridge1.so: undefined reference to `ippicvsDotProd_32f64f'
libBridge1.so: undefined reference to `ippicviMean_StdDev_8u_C1R'
libBridge1.so: undefined reference to `ippicviMirror_16u_C1R'
libBridge1.so: undefined reference to `ippicviMinMaxIndx_16u_C1MR'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_32f_C3CMR'
libBridge1.so: undefined reference to `ippicviConvert_16u32f_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_8u_C1MR'
libBridge1.so: undefined reference to `ippicvFree'
libBridge1.so: undefined reference to `ippicviNorm_Inf_32f_C1R'
libBridge1.so: undefined reference to `ippicviSet_32f_C1MR'
libBridge1.so: undefined reference to `ippicviMinMaxIndx_16u_C1R'
libBridge1.so: undefined reference to `ippicvsMaxEvery_8u'
libBridge1.so: undefined reference to `ippicviTranspose_8u_C4R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_16s_C3R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_8s_C3CMR'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_8u_C1MR'
libBridge1.so: undefined reference to `ippicviMinMaxIndx_32f_C1R'
libBridge1.so: undefined reference to `dlopen'
libBridge1.so: undefined reference to `ippicviMirror_16s_C4R'
libBridge1.so: undefined reference to `ippicviNormDiff_L2_8u_C4R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_8u_C3CMR'
libBridge1.so: undefined reference to `ippicviSum_16s_C4R'
libBridge1.so: undefined reference to `pthread_setspecific'
libBridge1.so: undefined reference to `ippicviMean_StdDev_16u_C1R'
libBridge1.so: undefined reference to `ippicviNormRel_L1_8u_C1R'
libBridge1.so: undefined reference to `ippicviMean_16u_C3CMR'
libBridge1.so: undefined reference to `ippicviCompare_32f_C1R'
libBridge1.so: undefined reference to `ippicviNorm_Inf_16u_C4R'
libBridge1.so: undefined reference to `ippicviNormRel_L2_32f_C1R'
libBridge1.so: undefined reference to `ippicviNorm_Inf_32f_C1MR'
libBridge1.so: undefined reference to `ippicviConvert_16s8u_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_Inf_16u_C1R'
libBridge1.so: undefined reference to `ippicviAnd_8u_C1R'
libBridge1.so: undefined reference to `ippicviConvert_8s32s_C1R'
libBridge1.so: undefined reference to `ippicviNormDiff_L1_16u_C3CMR'
libBridge1.so: undefined reference to `ippicviMean_StdDev_32f_C1R'
libBridge1.so: undefined reference to `ippicviConvert_8u32f_C1R'
libBridge1.so: undefined reference to `ippicviSet_16u_C1MR'
libBridge1.so: undefined reference to `ippicviDotProd_32s64f_C1R'
libBridge1.so: undefined reference to `ippicviMirror_16u_C4IR'
libBridge1.so: undefined reference to `ippicvsSortDescend_8u_I'

When running the java file itself, I now get this issue:

Exception in thread "main" java.lang.UnsatisfiedLinkError: /var/tests/oc/libBridge1.so: /var/tests/oc/libBridge1.so: undefined symbol: ippicviMinMaxIndx_16u_C1R
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1937)
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1855)
    at java.lang.Runtime.loadLibrary0(Runtime.java:870)
    at java.lang.System.loadLibrary(System.java:1122)
    at Bridge1.<clinit>(OpenCVSample.java:4)

--------------------------------- EDIT 2 ---------------------------------

After some further tinkering I've found the issue with getting undefined references. I was linking to the wrong core file. However the issue still persists, only on a smaller scale. Here is the following command I'm using:

 g++ -Wall -shared-libgcc -Im -o libBridge1.so Bridge1.cpp -fPIC -I/usr/lib/jvm/java-1.7.0-openjdk-amd64/include -I/usr/lib/jvm/java-1.7.0-openjdk-amd64/include/linux -I/var/opencv/opencv/include -I/var/opencv/opencv/include/opencv -I/var/opencv/opencv/modules/core/include -I/var/opencv/opencv/modules/imgproc/include -I/var/opencv/opencv/modules/photo/include -I/var/opencv/opencv/modules/objdetect/include -I/var/opencv/opencv/modules/imgcodecs/include -I/var/opencv/opencv/modules/videoio/include -I/var/opencv/opencv/modules/highgui/include  -L/var/opencv/opencv/build/lib -lopencv_core249 -L/var/opencv/opencv/build/lib -lopencv_features2d -L/var/opencv/opencv/build/lib -lopencv_imgproc -I/var/opencv/opencv/build/lib

During the compile process I now get this error:

Bridge1.cpp: In function ‘jint Java_Bridge1_BridgeFunction(JNIEnv*, jobject)’:
Bridge1.cpp:8:12: warning: unused variable ‘img’ [-Wunused-variable]
  IplImage *img = cvCreateImage( cvSize( 640, 480 ), IPL_DEPTH_8U, 1 );
            ^
/tmp/ccqbVddx.o: In function `Java_Bridge1_BridgeFunction':
Bridge1.cpp:(.text+0x63): undefined reference to `cvCreateImage'
collect2: error: ld returned 1 exit status

Answer 1

I agree with Andrew Henie about the -l flag, as I am curious how your library compiles.

But in your java class call System.loadLibrary(..) to load your library in the first place.

Then I expect it will fail, and using the ld command will be helpful to point out what you are missing.

Answer 2

You need to link your shared object with the required "-l..." options, just as if you were compiling a normal C/C++ executable to run that same function.

You should see the libraries needed if you do an "ldd libBridge1.so". If you don't see the needed libraries, you need to add them to the link step.