java.lang.UnsatisfiedLinkError: no jniopencv_core in java.library.path

Getting following error when running mvn command given in Readme file :

Caused by: java.lang.UnsatisfiedLinkError: /tmp/javacpp165453197293165/libjniopencv_core.so: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /tmp/javacpp165453197293165/libopencv_core.so.2.4)

P.S. :: This issue is with Ubuntu 14.04.

Solution:
Need to install GCC5. Follow below link for the same:
https://askubuntu.com/questions/618474/how-to-install-the-latest-gcurrently-5-1-in-ubuntucurrently-14-04

I found this solution in below link:
https://github.com/bytedeco/javacv/issues/436