libstdc++.so.6: version `GLIBCXX_3.4.29' not found

[shizuku]

I run this in pybind11

mkdir build
cd build
cmake ..
make check -j 4

got ERROR:

......
Traceback (most recent call last):
  File "/home/shizuku/code/python/pybind11/tests/test_cmake_build/subdirectory_function/../test.py", line 4, in <module>
    import test_cmake_build
ImportError: /home/shizuku/.conda/envs/py3.9/bin/../lib/libstdc++.so.6: version `GLIBCXX_3.4.29' not found (required by /home/shizuku/code/python/pybind11/build/tests/test_cmake_build/subdirectory_function/test_cmake_build.cpython-39-x86_64-linux-gnu.so)
......

I run cmake_example got ERROR:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: /home/shizuku/.conda/envs/py3.9/bin/../lib/libstdc++.so.6: version `GLIBCXX_3.4.29' not found (required by /home/shizuku/.conda/envs/py3.9/lib/python3.9/site-packages/cmake_example.cpython-39-x86_64-linux-gnu.so)

my OS: Arch Linux
python: 3.9.7 (Miniconda)

[lucasjinreal]

@shizuku For anyone might got this error, a simple way to fix it is by copy or system libstdc++ to conda according folder.

in my case:

rm /home/xx/anaconda3/bin/../lib/libstdc++.so.6
cp /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.29 /home/xx/anaconda3/bin/../lib
ln -s /home/xx/anaconda3/bin/../lib/libstdc++.so.6.0.29 /home/xx/anaconda3/bin/../lib/libstdc++.so.6

then

 strings /home/xx/anaconda3/bin/../lib/libstdc++.so.6 | grep GLIBCXX_3.4.29                                     1 main!?
GLIBCXX_3.4.29

[kenfehling]

Thanks, I actually made a symbolic link instead of copying. Worked well!

[loriayu]

我的服务器中没有6.0.29版本，从网上下载后拷贝进去进行ln也可以使用，谢谢。

[Ssakura-go]

I met the same problem and successfully fixed it by installing the opencv / scikit-image in the right version. In addition, maybe the version of pip should be taken into account.

[modu001]

My ERROR was
/lib/x86_64-linux-gnu/libstdc++.so.6: version 'GLIBCXX_3.4.29' not found
In this case, I was able to solve the problem by copying the anaconda lib.

1. strings /home/xx/anaconda3/envs/xx/lib/libstdc++.so.6 | grep GLIBCXX to confirm that GLIBCXX_3.4.29 exists in one of your environments.
2. rm /lib/x86_64-linux-gnu/libstdc++.so.6
3. cp /home/xx/anaconda3/envs/xx/lib/libstdc++.so.6 /lib/x86_64-linux-gnu

[chfritz]

This undoes exactly what a virtual environment like anaconda is meant to achieve: not having to replace system libraries in order to satisfy dependencies.

[robofar]

@chfritz I have same issue as @modu001 . I git cloned repo and install it as package in my conda environment. But why does package .so file looks for this libstdc++.so.6 system-wide, why it does not look at the same file but in conda directory? I grep it and it contains GLIBCXX_3.4.29, but system-wide .so file does not contain it.

[yash051]

I simply delete 'libstdc++.so.6' symbolic link file from 'miniconda3/envs/env_name/lib/' and thats it program run perfectly.

[Ruhrozz]

really helped!

[Ruhrozz]

I also had an error with Jupyter after that:
ImportError: cannot import name 'AstRenderer' from 'mistune.renderers'

but it was solved with:
pip install mistune --upgrade

I hope it will help somebody

[1037861070]

good

[ZenMoore]

I have a suggestion for all who encountered this issue:
Please first check the message after required by.
In my case, this version of GLIBCXX_3.4.29 is required by xxx/miniconda3/envs/internlp/lib/python3.10/site-packages/pandas/_libs/window/aggregations.cpython-310-x86_64-linux-gnu.so, which is not the same case as the one the blogger encountered.
As a result, I don't need to change the soft links.
All I need to do is just pip install --upgrade pandas.

[hibaozhong]

It works.

[mickelliu]

It works.

[aymuos15]

This worked for me.

[anki-code]

Solved by pip install -U --force-reinstall scipy in my case. Thanks!

[Imatgay]

@anki-code's solution worked for me too!