Ubuntu install Dlib After import appears libstdc++.so.6:version ' glibcxx_3.4.21 ' not found

1 Problem description

Install the dependency package Cmake,libboost first, then install the Dlib

sudo Install CMake sudo install libboost-python-devsudoinstall dlib

Error when import dlib after installation

Importerror:/home/liaohuqiang/anaconda2/bin/. /lib/libstdc++.so. 6: Version ' Glibcxx_3. 4.21 ' Not found (required by/usr/lib/x86_64-linux-gnu/libboost_python-py27.so.1.58.0)

2 reasons

gccwhen upgrading, the dynamic library does not replace gcc the old version of the dynamic library

3 workaround

(1) Find the corresponding dynamic library generated by GCC upgrade

sudo Find " libstdc++.so.6* "

/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21

(2) Copy to the desired place, according to the error message, put the dynamic library to/home/liaohuqiang/anaconda2/lib

CP /usr/lib/x86_64-linux-gnu/libstdc++.so. 6.0.  /home/liaohuqiang/anaconda2/lib

(3) Create a new soft link

rm -rf libstdc++.so. 6 Ln -S libstdc++.so. 6.0.  libstdc++.so. 6

(4) View the dynamic library and discover that it has been updated to the desired version

Strings/home/liaohuqiang/anaconda2/lib/libstdc++.so. 6.0. | grep Glibcxx

Ubuntu install dlib after import appears libstdc++.so.6:version ' glibcxx_3.4.21 ' not found