Shared Object Library not linked after compiling

Question

My program uses the libuvc-library and therefore the libuvc.so.0.

But after successful compilation, i can't run the program, because:

root@Raspi_DataHarvest:~/Schreibtisch# g++ UVCCameraHandler.cpp `pkg-config --libs --cflags opencv` `pkg-config --libs --cflags libuvc` -o UVCCameraHandler.o

./UVCCameraHandler.o: error while loading shared libraries: libuvc.so.0: cannot open shared object file: No such file or directory

The reason is:

root@Raspi_DataHarvest:~/Schreibtisch# ldd UVCCameraHandler.o
        linux-vdso.so.1 (0x7edff000)
        /usr/lib/arm-linux-gnueabihf/libarmmem.so (0x76f1a000)
        libopencv_dnn.so.3.4 => /usr/local/lib/libopencv_dnn.so.3.4 (0x76bc7000)
        libopencv_ml.so.3.4 => /usr/local/lib/libopencv_ml.so.3.4 (0x76b20000)
******  libuvc.so.0 => not found  *******
...

The file is located in: /usr/local/lib/arm-linux-gnueabihf/libuvc.so.0.0.6

But I don't know how to link the .so file ...

llllllllll · Accepted Answer · 2018-01-25 17:59:34Z

2

You need to tell the run-time loader where to find your library, because this is not a normal path.

Use this command to run:

LD_LIBRARY_PATH="/usr/local/lib/arm-linux-gnueabihf:$LD_LIBRARY_PATH" ./a.out

Or you can export this LD_LIBRARY_PATH as a environment variable, and run ./a.out directly afterwards.

answered Jan 25, 2018 at 17:59

llllllllll

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