When trying to import a python library built on another system (using gcc 11) I am getting the error:
ImportError: /lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.29' not found
Using strings the latest version is 3.4.28 and gcc-9 is installed.
$ strings /usr/lib/x86_64-linux-gnu/libstdc++.so.6 | grep GLIB
GLIBCXX_3.4
GLIBCXX_3.4.1
GLIBCXX_3.4.2
GLIBCXX_3.4.3
GLIBCXX_3.4.4
GLIBCXX_3.4.5
GLIBCXX_3.4.6
GLIBCXX_3.4.7
GLIBCXX_3.4.8
GLIBCXX_3.4.9
GLIBCXX_3.4.10
GLIBCXX_3.4.11
GLIBCXX_3.4.12
GLIBCXX_3.4.13
GLIBCXX_3.4.14
GLIBCXX_3.4.15
GLIBCXX_3.4.16
GLIBCXX_3.4.17
GLIBCXX_3.4.18
GLIBCXX_3.4.19
GLIBCXX_3.4.20
GLIBCXX_3.4.21
GLIBCXX_3.4.22
GLIBCXX_3.4.23
GLIBCXX_3.4.24
GLIBCXX_3.4.25
GLIBCXX_3.4.26
GLIBCXX_3.4.27
GLIBCXX_3.4.28
The solution? Simply install gcc-11 and update libstc++-6
sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
sudo apt update
sudo apt install gcc-11 libstdc++6
It will then pull the latest libstdcc and the error is gone.
Hope it helps!