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。

[Jet-Shawn]

This is the only way for me to solve the problem. Thanks a lot!!!

[HardikJain02]

i have 6.0.30 version, its not working. do i have to get 6.0.29 as suggested by @loriayu ?

[HardikJain02]

main solution worked for me. in my case, strings command says no file but it worked.

[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.

[Lan0508]

reinstalling scikit-image works👍

[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.

[rezajahadi]

Thank you! my problem was extacly same as you and it solved.

[HKAFITGlitter]

what if I do not have permission to copy file to /lib/x86_64-linux-gnu?

[rezajahadi]

I used sudo in order to have permission.

[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

[ZZQ987]

Thank you!

[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.

[coconut0713]

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

Perfect!!! Thanks!!!!!

[shizhediao]

You saved my day!

[maiducbinh]

This worked for me!!! Tks <3.

[MyhooSalsa]

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

[SagiPolaczek]

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

Solved mine too. Thanks :)

[nungsorb]

In my case, solved by
export LD_LIBRARY_PATH=/home/user/miniconda3/lib:$LD_LIBRARY_PATH
But ensure that LD_LIBRARY_PATH includes this lib directory so that the system uses the correct version of the libstdc++ library.

[yqkqknct]

This works, if you are running mujoco_py this may be relevant! (I installed osmesa to conda like ethz-asl/reinmav-gym#35 (comment))

[jinghaoliu]

step1: echo 'export LD_LIBRARY_PATH=/home/conda/envs/XXX/lib:$LD_LIBRARY_PATH' >> ~/.bashrc

step2: source ~/.bashrc

[Petrichor361]

Great! This works, because i have no admin permission.

[Cupcc]

1. find the higher version of libstdc++.so.*

• find / libstdc++.so.*

2. check whether there is a saftisfied GLIBCXX version

• strings /to/path/libstdc++.so.6.0.29 | grep GLIBCXX

2. copy the higher viersion file to the position where program cann't find
3. remove current softlink

• rm /to/path/libcstdc++.so.6

5. add the new softlink with the higher version

• ln -s /to/path/libstdc++.so.6.0.29 /to/path/libstdc++.so.6