Unable to find shared libraries after installing DeepLabel #39

absagargupta · 2023-03-03T09:18:35Z

Hi there
After the build as soo as I tried running it from the terminal with ./DeepLabel.pro, I would get an error
"/DeepLabel.pro: line 7: QT: command not found
./DeepLabel.pro: line 9: syntax error near unexpected token QT_MAJOR_VERSION,' ./DeepLabel.pro: line 9: greaterThan(QT_MAJOR_VERSION, 4): QT += widgets'
"
Also I have already installed QT and is working on Ubuntu20.04. Any help will be appreciated

The text was updated successfully, but these errors were encountered:

jveitchmichaelis · 2023-03-03T09:46:41Z

That's just a configuration file. When you build the program you'll get a binary file. Did you compile deeplabel?

absagargupta · 2023-03-03T09:48:38Z

It says "Project MESSAGE: Linux"

jveitchmichaelis · 2023-03-03T09:49:43Z

Apologies I misunderstood, see above. To run deeplabel once you've compiled it, a new executable will be created. The Pro file is for configuration, it's not the program.

Do you see a folder called release anywhere?

absagargupta · 2023-03-03T09:52:59Z

Yes there is folder called release. As I try to run ./deeplabel in it, it shows me another error of "./deeplabel: error while loading shared libraries: libopencv_core.so.4.5: cannot open shared object file: No such file or directory" even though I had installed Opencv.

jveitchmichaelis · 2023-03-03T09:58:51Z

Can you paste the output from ldd deeplabel?

But that is indeed the file. You can also try to double check by opening the Pro file in Qt Creator and trying to run it through there.

It sounds like you need to set up your PATH to include the OpenCV libraries.

absagargupta · 2023-03-03T10:04:20Z

Here is the output of the same

linux-vdso.so.1 (0x00007ffd99cd3000)
/usr/local/lib/AppProtection/libAppProtection.so (0x00007fd2b4d2f000)
libprotobuf.so.17 => /lib/x86_64-linux-gnu/libprotobuf.so.17 (0x00007fd2b4a16000)
libopencv_core.so.4.5 => not found
libopencv_imgproc.so.4.5 => not found
libopencv_imgcodecs.so.4.5 => not found
libopencv_tracking.so.4.5 => not found
libopencv_video.so.4.5 => not found
libopencv_videoio.so.4.5 => not found
libopencv_dnn.so.4.5 => not found
libQt5Widgets.so.5 => /lib/x86_64-linux-gnu/libQt5Widgets.so.5 (0x00007fd2b4379000)
libQt5Gui.so.5 => /lib/x86_64-linux-gnu/libQt5Gui.so.5 (0x00007fd2b3d8e000)
libQt5Sql.so.5 => /lib/x86_64-linux-gnu/libQt5Sql.so.5 (0x00007fd2b3d3e000)
libQt5Concurrent.so.5 => /lib/x86_64-linux-gnu/libQt5Concurrent.so.5 (0x00007fd2b3d35000)
libQt5Xml.so.5 => /lib/x86_64-linux-gnu/libQt5Xml.so.5 (0x00007fd2b3cf3000)
libQt5Core.so.5 => /lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007fd2b37aa000)
libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007fd2b35c8000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fd2b3479000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007fd2b345c000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fd2b326a000)
/lib64/ld-linux-x86-64.so.2 (0x00007fd2b5087000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fd2b3247000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fd2b3241000)
libX11.so.6 => /lib/x86_64-linux-gnu/libX11.so.6 (0x00007fd2b3104000)
libxcb.so.1 => /lib/x86_64-linux-gnu/libxcb.so.1 (0x00007fd2b30da000)
libXi.so.6 => /lib/x86_64-linux-gnu/libXi.so.6 (0x00007fd2b30c6000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007fd2b30aa000)
libGL.so.1 => /lib/x86_64-linux-gnu/libGL.so.1 (0x00007fd2b3022000)
libpng16.so.16 => /lib/x86_64-linux-gnu/libpng16.so.16 (0x00007fd2b2fea000)
libharfbuzz.so.0 => /lib/x86_64-linux-gnu/libharfbuzz.so.0 (0x00007fd2b2ee6000)
libicui18n.so.66 => /lib/x86_64-linux-gnu/libicui18n.so.66 (0x00007fd2b2be5000)
libicuuc.so.66 => /lib/x86_64-linux-gnu/libicuuc.so.66 (0x00007fd2b29ff000)
libpcre2-16.so.0 => /lib/x86_64-linux-gnu/libpcre2-16.so.0 (0x00007fd2b297b000)
libdouble-conversion.so.3 => /lib/x86_64-linux-gnu/libdouble-conversion.so.3 (0x00007fd2b2965000)
libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007fd2b283c000)
libXau.so.6 => /lib/x86_64-linux-gnu/libXau.so.6 (0x00007fd2b2834000)
libXdmcp.so.6 => /lib/x86_64-linux-gnu/libXdmcp.so.6 (0x00007fd2b282c000)
libXext.so.6 => /lib/x86_64-linux-gnu/libXext.so.6 (0x00007fd2b2817000)
libGLdispatch.so.0 => /lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007fd2b275f000)
libGLX.so.0 => /lib/x86_64-linux-gnu/libGLX.so.0 (0x00007fd2b272b000)
libfreetype.so.6 => /lib/x86_64-linux-gnu/libfreetype.so.6 (0x00007fd2b266c000)
libgraphite2.so.3 => /lib/x86_64-linux-gnu/libgraphite2.so.3 (0x00007fd2b263d000)
libicudata.so.66 => /lib/x86_64-linux-gnu/libicudata.so.66 (0x00007fd2b0b7c000)
libpcre.so.3 => /lib/x86_64-linux-gnu/libpcre.so.3 (0x00007fd2b0b09000)
libbsd.so.0 => /lib/x86_64-linux-gnu/libbsd.so.0 (0x00007fd2b0aef000)

jveitchmichaelis · 2023-03-03T10:11:44Z

Ok, couple of follow ups:

Where is OpenCV installed? Did you install it from source, or via a package manager?
What does your PATH variable contain (the problem seems to be that OpenCV is not on your path)

absagargupta · 2023-03-03T10:30:09Z

Sure:

I used the code given from the repo itself:
`git clone https://github.com/opencv/opencv
git clone https://github.com/opencv/opencv_contrib
cd opencv && git checkout 4.5.3 && cd ../
cd opencv_contrib && git checkout 4.5.3 && cd ../

cd opencv
mkdir build && cd build
cmake .. -DBUILD_TESTS=OFF -DBUILD_PERF_TESTS=OFF -DOPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules
make -j8
sudo make install`
2. I am unable to find the PATH variable. I had installed it inside the deeplabel.

jveitchmichaelis · 2023-03-03T10:33:17Z

PATH is a system variable - it doesn't have anything to do with deelabel. It's where Linux will look for libraries when a program runs. http://www.linfo.org/path_env_var.html

Can you confirm where the OpenCV library is installed to? (something like /usr/local) and what your PATH variable contains? (echo $PATH)

absagargupta · 2023-03-03T10:43:47Z

Ohh okay.
My PATH variable does not contain any opencv related variable. Here is the output to echo $PATH "/home/sagar/.pyenv/plugins/pyenv-virtualenv/shims:/home/sagar/.pyenv/bin:/home/sagar/miniconda3/condabin:/home/sagar/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
"

While searching online I found a way:
I search using sudo find / -name "libopencv_core.so.4.5*"
It gave me back the response as "/media/auto-annotation/deeplabel/opencv/build/lib/libopencv_core.so.4.5.3"

jveitchmichaelis · 2023-03-03T10:52:22Z

Oops, I haven't had coffee yet. PATH is used for binaries on Linux, but you can also try setting LD_LIBRARY_PATH to the folder where your opencv libraries are installed to. https://www.tecmint.com/understanding-shared-libraries-in-linux/

…

On Fri, 3 Mar 2023 at 11:43, absagargupta ***@***.***> wrote: Ohh okay. My PATH variable does not contain any opencv related variable. Here is the output to echo $PATH "/home/sagar/.pyenv/plugins/pyenv-virtualenv/shims:/home/sagar/.pyenv/bin:/home/sagar/miniconda3/condabin:/home/sagar/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin " — Reply to this email directly, view it on GitHub <#39 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAYDMJ7YKYSPNBE6GMJP5YTW2HDO5ANCNFSM6AAAAAAVOLTREE> . You are receiving this because you commented.Message ID: ***@***.***>

absagargupta · 2023-03-03T10:57:10Z

Thanks so much it got resolved. I set the path using the LD_LIBRARY_PATH. But Now I am getting another error of "./deeplabel: symbol lookup error: ./deeplabel: undefined symbol: _ZN2cv3dnn14dnn4_v202106083Net20setPreferableBackendEi" on running it. Should I open another issue or continue here ?

jveitchmichaelis · 2023-03-03T11:02:02Z

We can still continue here, that looks like we can't find some function in opencv (part of the DNN module). Can you run the build script for opencv and paste the output of cmake? It should list which modules were built.

It's possible that you're missing some dependency for opencv that caused it to skip some module. See here for the options that are used on GitHub actions:

https://github.com/jveitchmichaelis/deeplabel/blob/master/.github/workflows/build_ubuntu.yml

absagargupta · 2023-03-03T11:09:31Z

Sorry My bad. Actually I had earlier same version of openCV installed in another path and that was in my LD_LIBRARY. I unset the variables and gave the path of the openCV that you gave along with it. It started working after that. Thank you so much. You are a saviour. Coffee is on me if and when we meet.

jveitchmichaelis · 2023-03-03T11:10:17Z

Fantastic. Please feel free to post another issue if you run into trouble :)

jveitchmichaelis added the question label Mar 3, 2023

jveitchmichaelis changed the title ~~Issue in running the DeepLabel.pro~~ Unable to find shared libraries after installing DeepLabel Mar 3, 2023

jveitchmichaelis closed this as completed Mar 3, 2023

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Unable to find shared libraries after installing DeepLabel #39

Unable to find shared libraries after installing DeepLabel #39

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Unable to find shared libraries after installing DeepLabel #39

Unable to find shared libraries after installing DeepLabel #39

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