java.lang.UnsatisfiedLinkError: /tmp/javacpp4839791561492098/libjniopencv_core.so

[surezsivam]

Hello,

I am trying deeplearning4j for Image Recognition, able to run the code in my local ubuntu(16.04) machine with no issues(using intelliJ). when i move the code to ubuntu(14.04) server, facing the below issue.

https://gist.github.com/surezsivam/a3557f4af6befd089d4da75f086aa34d

Using the same pom.xml without any modification from deeplearning4j examples.

[saudet]

Could you also provide the stack trace that comes with the exception?

[surezsivam]

Hi,

I have copied the stack trace in the provided gist link.

Please let me know if you have any problem accessing it.

Thanks

[saudet]

Caused by: java.lang.UnsatisfiedLinkError: /tmp/javacpp4839791561492098/libjniopencv_core.so: libgomp.so.1: cannot open shared object file: No such file or directory

That means OpenMP is missing from your system, so try to install it.

[surezsivam]

I am getting this now.

Caused by: java.lang.UnsatisfiedLinkError: /tmp/javacpp4923781916138838/libjnind4j.so: /usr/lib/x86_64-linux-gnu/libgomp.so.1: version `GOMP_4.0' not found (required by /tmp/javacpp4923781916138838/libnd4j.so)

my libraries are here
/usr/lib/gcc/x86_64-linux-gnu/4.8.4$ ls -l libgomp*
-rw-r--r-- 1 root root 121532 May 7 06:30 libgomp.a
lrwxrwxrwx 1 root root 38 May 7 06:30 libgomp.so -> ../../../x86_64-linux-gnu/libgomp.so.1
-rw-r--r-- 1 root root 165 May 7 06:29 libgomp.spec

AND

/usr/lib/gcc/x86_64-linux-gnu/4.8$ ls -l libgomp*
-rw-r--r-- 1 root root 121532 May 7 06:30 libgomp.a
lrwxrwxrwx 1 root root 38 May 7 06:30 libgomp.so -> ../../../x86_64-linux-gnu/libgomp.so.1
-rw-r--r-- 1 root root 165 May 7 06:29 libgomp.spec

[surezsivam]

Never mind, Got it fixed by installing gcc 5 version
Ref : http://askubuntu.com/questions/618474/how-to-install-the-latest-gcurrently-5-1-in-ubuntucurrently-14-04

Thanks for your support. Appreciated.

[saudet]

I see. I tried to bundle OpenMP, but since it's pretty much a system library, I think users will need to make sure to have it installed. It might not be something we can bundle after all...

[mavriksc]

I had this same issue. Was working on Windows and it would run fine locally and from jar, but not on aws, all other features of the project worked but the opencv was failing with the same error. Turns out git installed lipgomp on windows and i'm sure on my Ubuntu box where it was working too.
to fix on AWS i ran apt-get install libgomp1 and yum install libgomp on AWS-ubuntu server and AWS-redhat respectively i'm sure i may be missing something in maven to get it to include that but this works and i'm sure it doesn't hurt for the environment to have that. my project that uses JavaCv Thanks for your hard work. this may be usefull for someone getting into template matching and uses Mat instead of ImImpl and can read image from resource stream from jar.

[saudet]

I confirmed that we can bundle libgomp.so.1 to fix this, so let's do that!

[saudet]

libgomp.so.1 now gets bundled starting with version 1.3, so this error should not happen anymore. Enjoy!